diff options
Diffstat (limited to 'arch/arm/cpu')
31 files changed, 2486 insertions, 119 deletions
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 3ebdfddc80..2f8fd6acc2 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -82,6 +82,7 @@ cpu_init_crit: orr r0, r0, #0x00001000 @ set bit 12 (I) I-Cache mcr p15, 0, r0, c1, c0, 0 +#ifndef CONFIG_SKIP_LOWLEVEL_INIT_ONLY /* * Jump to board specific initialization... The Mask ROM will have already initialized * basic memory. Go here to bump up clock rate and handle wake up conditions. @@ -89,5 +90,6 @@ cpu_init_crit: mov ip, lr /* persevere link reg across call */ bl lowlevel_init /* go setup pll,mux,memory */ mov lr, ip /* restore link */ +#endif mov pc, lr /* back to my caller */ #endif /* CONFIG_SKIP_LOWLEVEL_INIT */ diff --git a/arch/arm/cpu/arm920t/start.S b/arch/arm/cpu/arm920t/start.S index 69cabebed9..3ada6d026f 100644 --- a/arch/arm/cpu/arm920t/start.S +++ b/arch/arm/cpu/arm920t/start.S @@ -135,6 +135,7 @@ cpu_init_crit: orr r0, r0, #0x00001000 @ set bit 12 (I) I-Cache mcr p15, 0, r0, c1, c0, 0 +#ifndef CONFIG_SKIP_LOWLEVEL_INIT_ONLY /* * before relocating, we have to setup RAM timing * because memory timing is board-dependend, you will @@ -143,7 +144,7 @@ cpu_init_crit: mov ip, lr bl lowlevel_init - mov lr, ip +#endif mov pc, lr #endif /* CONFIG_SKIP_LOWLEVEL_INIT */ diff --git a/arch/arm/cpu/arm926ejs/mxs/mxs.c b/arch/arm/cpu/arm926ejs/mxs/mxs.c index a6af0fcb36..229862079a 100644 --- a/arch/arm/cpu/arm926ejs/mxs/mxs.c +++ b/arch/arm/cpu/arm926ejs/mxs/mxs.c @@ -167,9 +167,9 @@ const char *get_imx_type(u32 imxtype) { switch (imxtype) { case MXC_CPU_MX23: - return "23"; /* Quad-Plus version of the mx6 */ + return "23"; case MXC_CPU_MX28: - return "28"; /* Dual-Plus version of the mx6 */ + return "28"; default: return "??"; } diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S index f05113da9d..959d1ed86d 100644 --- a/arch/arm/cpu/arm926ejs/start.S +++ b/arch/arm/cpu/arm926ejs/start.S @@ -101,11 +101,13 @@ flush_dcache: #endif mcr p15, 0, r0, c1, c0, 0 +#ifndef CONFIG_SKIP_LOWLEVEL_INIT_ONLY /* * Go setup Memory and board specific bits prior to relocation. */ mov ip, lr /* perserve link reg across call */ bl lowlevel_init /* go setup pll,mux,memory */ mov lr, ip /* restore link */ +#endif mov pc, lr /* back to my caller */ #endif /* CONFIG_SKIP_LOWLEVEL_INIT */ diff --git a/arch/arm/cpu/arm946es/start.S b/arch/arm/cpu/arm946es/start.S index 214cd8cbd9..51053c32dc 100644 --- a/arch/arm/cpu/arm946es/start.S +++ b/arch/arm/cpu/arm946es/start.S @@ -90,11 +90,13 @@ cpu_init_crit: orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */ mcr p15, 0, r0, c1, c0, 0 +#ifndef CONFIG_SKIP_LOWLEVEL_INIT_ONLY /* * Go setup Memory and board specific bits prior to relocation. */ mov ip, lr /* perserve link reg across call */ bl lowlevel_init /* go setup memory */ mov lr, ip /* restore link */ +#endif mov pc, lr /* back to my caller */ #endif diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile index 328c4b10e9..0a5ac97df0 100644 --- a/arch/arm/cpu/armv7/Makefile +++ b/arch/arm/cpu/armv7/Makefile @@ -38,6 +38,7 @@ obj-y += s5p-common/ endif obj-$(if $(filter am33xx,$(SOC)),y) += am33xx/ +obj-$(if $(filter bcm235xx,$(SOC)),y) += bcm235xx/ obj-$(if $(filter bcm281xx,$(SOC)),y) += bcm281xx/ obj-$(if $(filter bcmcygnus,$(SOC)),y) += bcmcygnus/ obj-$(if $(filter bcmnsp,$(SOC)),y) += bcmnsp/ diff --git a/arch/arm/cpu/armv7/bcm235xx/Makefile b/arch/arm/cpu/armv7/bcm235xx/Makefile new file mode 100644 index 0000000000..7fdb263f2f --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/Makefile @@ -0,0 +1,12 @@ +# +# Copyright 2013 Broadcom Corporation. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += clk-core.o +obj-y += clk-bcm235xx.o +obj-y += clk-sdio.o +obj-y += clk-bsc.o +obj-$(CONFIG_BCM_SF2_ETH) += clk-eth.o +obj-y += clk-usb-otg.o diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-bcm235xx.c b/arch/arm/cpu/armv7/bcm235xx/clk-bcm235xx.c new file mode 100644 index 0000000000..ce3d019125 --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-bcm235xx.c @@ -0,0 +1,573 @@ +/* + * Copyright 2013 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * + * bcm235xx-specific clock tables + * + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/errno.h> +#include <asm/arch/sysmap.h> +#include <asm/kona-common/clk.h> +#include "clk-core.h" + +#define CLOCK_1K 1000 +#define CLOCK_1M (CLOCK_1K * 1000) + +/* declare a reference clock */ +#define DECLARE_REF_CLK(clk_name, clk_parent, clk_rate, clk_div) \ +static struct refclk clk_name = { \ + .clk = { \ + .name = #clk_name, \ + .parent = clk_parent, \ + .rate = clk_rate, \ + .div = clk_div, \ + .ops = &ref_clk_ops, \ + }, \ +} + +/* + * Reference clocks + */ + +/* Declare a list of reference clocks */ +DECLARE_REF_CLK(ref_crystal, 0, 26 * CLOCK_1M, 1); +DECLARE_REF_CLK(var_96m, 0, 96 * CLOCK_1M, 1); +DECLARE_REF_CLK(ref_96m, 0, 96 * CLOCK_1M, 1); +DECLARE_REF_CLK(ref_312m, 0, 312 * CLOCK_1M, 0); +DECLARE_REF_CLK(ref_104m, &ref_312m.clk, 104 * CLOCK_1M, 3); +DECLARE_REF_CLK(ref_52m, &ref_104m.clk, 52 * CLOCK_1M, 2); +DECLARE_REF_CLK(ref_13m, &ref_52m.clk, 13 * CLOCK_1M, 4); +DECLARE_REF_CLK(var_312m, 0, 312 * CLOCK_1M, 0); +DECLARE_REF_CLK(var_104m, &var_312m.clk, 104 * CLOCK_1M, 3); +DECLARE_REF_CLK(var_52m, &var_104m.clk, 52 * CLOCK_1M, 2); +DECLARE_REF_CLK(var_13m, &var_52m.clk, 13 * CLOCK_1M, 4); + +struct refclk_lkup { + struct refclk *procclk; + const char *name; +}; + +/* Lookup table for string to clk tranlation */ +#define MKSTR(x) {&x, #x} +static struct refclk_lkup refclk_str_tbl[] = { + MKSTR(ref_crystal), MKSTR(var_96m), MKSTR(ref_96m), + MKSTR(ref_312m), MKSTR(ref_104m), MKSTR(ref_52m), + MKSTR(ref_13m), MKSTR(var_312m), MKSTR(var_104m), + MKSTR(var_52m), MKSTR(var_13m), +}; + +int refclk_entries = sizeof(refclk_str_tbl)/sizeof(refclk_str_tbl[0]); + +/* convert ref clock string to clock structure pointer */ +struct refclk *refclk_str_to_clk(const char *name) +{ + int i; + struct refclk_lkup *tblp = refclk_str_tbl; + for (i = 0; i < refclk_entries; i++, tblp++) { + if (!(strcmp(name, tblp->name))) + return tblp->procclk; + } + return NULL; +} + +/* frequency tables indexed by freq_id */ +unsigned long master_axi_freq_tbl[8] = { + 26 * CLOCK_1M, + 52 * CLOCK_1M, + 104 * CLOCK_1M, + 156 * CLOCK_1M, + 156 * CLOCK_1M, + 208 * CLOCK_1M, + 312 * CLOCK_1M, + 312 * CLOCK_1M +}; + +unsigned long master_ahb_freq_tbl[8] = { + 26 * CLOCK_1M, + 52 * CLOCK_1M, + 52 * CLOCK_1M, + 52 * CLOCK_1M, + 78 * CLOCK_1M, + 104 * CLOCK_1M, + 104 * CLOCK_1M, + 156 * CLOCK_1M +}; + +unsigned long slave_axi_freq_tbl[8] = { + 26 * CLOCK_1M, + 52 * CLOCK_1M, + 78 * CLOCK_1M, + 104 * CLOCK_1M, + 156 * CLOCK_1M, + 156 * CLOCK_1M +}; + +unsigned long slave_apb_freq_tbl[8] = { + 26 * CLOCK_1M, + 26 * CLOCK_1M, + 39 * CLOCK_1M, + 52 * CLOCK_1M, + 52 * CLOCK_1M, + 78 * CLOCK_1M +}; + +unsigned long esub_freq_tbl[8] = { + 78 * CLOCK_1M, + 156 * CLOCK_1M, + 156 * CLOCK_1M, + 156 * CLOCK_1M, + 208 * CLOCK_1M, + 208 * CLOCK_1M, + 208 * CLOCK_1M +}; + +static struct bus_clk_data bsc1_apb_data = { + .gate = HW_SW_GATE_AUTO(0x0458, 16, 0, 1), +}; + +static struct bus_clk_data bsc2_apb_data = { + .gate = HW_SW_GATE_AUTO(0x045c, 16, 0, 1), +}; + +static struct bus_clk_data bsc3_apb_data = { + .gate = HW_SW_GATE_AUTO(0x0484, 16, 0, 1), +}; + +/* * Master CCU clocks */ +static struct peri_clk_data sdio1_data = { + .gate = HW_SW_GATE(0x0358, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_52m", + "ref_52m", + "var_96m", + "ref_96m"), + .sel = SELECTOR(0x0a28, 0, 3), + .div = DIVIDER(0x0a28, 4, 14), + .trig = TRIGGER(0x0afc, 9), +}; + +static struct peri_clk_data sdio2_data = { + .gate = HW_SW_GATE(0x035c, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_52m", + "ref_52m", + "var_96m", + "ref_96m"), + .sel = SELECTOR(0x0a2c, 0, 3), + .div = DIVIDER(0x0a2c, 4, 14), + .trig = TRIGGER(0x0afc, 10), +}; + +static struct peri_clk_data sdio3_data = { + .gate = HW_SW_GATE(0x0364, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_52m", + "ref_52m", + "var_96m", + "ref_96m"), + .sel = SELECTOR(0x0a34, 0, 3), + .div = DIVIDER(0x0a34, 4, 14), + .trig = TRIGGER(0x0afc, 12), +}; + +static struct peri_clk_data sdio4_data = { + .gate = HW_SW_GATE(0x0360, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_52m", + "ref_52m", + "var_96m", + "ref_96m"), + .sel = SELECTOR(0x0a30, 0, 3), + .div = DIVIDER(0x0a30, 4, 14), + .trig = TRIGGER(0x0afc, 11), +}; + +static struct peri_clk_data sdio1_sleep_data = { + .clocks = CLOCKS("ref_32k"), + .gate = SW_ONLY_GATE(0x0358, 20, 4), +}; + +static struct peri_clk_data sdio2_sleep_data = { + .clocks = CLOCKS("ref_32k"), + .gate = SW_ONLY_GATE(0x035c, 20, 4), +}; + +static struct peri_clk_data sdio3_sleep_data = { + .clocks = CLOCKS("ref_32k"), + .gate = SW_ONLY_GATE(0x0364, 20, 4), +}; + +static struct peri_clk_data sdio4_sleep_data = { + .clocks = CLOCKS("ref_32k"), + .gate = SW_ONLY_GATE(0x0360, 20, 4), +}; + +static struct bus_clk_data usb_otg_ahb_data = { + .gate = HW_SW_GATE_AUTO(0x0348, 16, 0, 1), +}; + +static struct bus_clk_data sdio1_ahb_data = { + .gate = HW_SW_GATE_AUTO(0x0358, 16, 0, 1), +}; + +static struct bus_clk_data sdio2_ahb_data = { + .gate = HW_SW_GATE_AUTO(0x035c, 16, 0, 1), +}; + +static struct bus_clk_data sdio3_ahb_data = { + .gate = HW_SW_GATE_AUTO(0x0364, 16, 0, 1), +}; + +static struct bus_clk_data sdio4_ahb_data = { + .gate = HW_SW_GATE_AUTO(0x0360, 16, 0, 1), +}; + +/* * Slave CCU clocks */ +static struct peri_clk_data bsc1_data = { + .gate = HW_SW_GATE(0x0458, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_104m", + "ref_104m", + "var_13m", + "ref_13m"), + .sel = SELECTOR(0x0a64, 0, 3), + .trig = TRIGGER(0x0afc, 23), +}; + +static struct peri_clk_data bsc2_data = { + .gate = HW_SW_GATE(0x045c, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_104m", + "ref_104m", + "var_13m", + "ref_13m"), + .sel = SELECTOR(0x0a68, 0, 3), + .trig = TRIGGER(0x0afc, 24), +}; + +static struct peri_clk_data bsc3_data = { + .gate = HW_SW_GATE(0x0484, 18, 2, 3), + .clocks = CLOCKS("ref_crystal", + "var_104m", + "ref_104m", + "var_13m", + "ref_13m"), + .sel = SELECTOR(0x0a84, 0, 3), + .trig = TRIGGER(0x0b00, 2), +}; + +/* + * CCU clocks + */ + +static struct ccu_clock kpm_ccu_clk = { + .clk = { + .name = "kpm_ccu_clk", + .ops = &ccu_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .num_policy_masks = 1, + .policy_freq_offset = 0x00000008, + .freq_bit_shift = 8, + .policy_ctl_offset = 0x0000000c, + .policy0_mask_offset = 0x00000010, + .policy1_mask_offset = 0x00000014, + .policy2_mask_offset = 0x00000018, + .policy3_mask_offset = 0x0000001c, + .lvm_en_offset = 0x00000034, + .freq_id = 2, + .freq_tbl = master_axi_freq_tbl, +}; + +static struct ccu_clock kps_ccu_clk = { + .clk = { + .name = "kps_ccu_clk", + .ops = &ccu_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .num_policy_masks = 2, + .policy_freq_offset = 0x00000008, + .freq_bit_shift = 8, + .policy_ctl_offset = 0x0000000c, + .policy0_mask_offset = 0x00000010, + .policy1_mask_offset = 0x00000014, + .policy2_mask_offset = 0x00000018, + .policy3_mask_offset = 0x0000001c, + .policy0_mask2_offset = 0x00000048, + .policy1_mask2_offset = 0x0000004c, + .policy2_mask2_offset = 0x00000050, + .policy3_mask2_offset = 0x00000054, + .lvm_en_offset = 0x00000034, + .freq_id = 2, + .freq_tbl = slave_axi_freq_tbl, +}; + +#ifdef CONFIG_BCM_SF2_ETH +static struct ccu_clock esub_ccu_clk = { + .clk = { + .name = "esub_ccu_clk", + .ops = &ccu_clk_ops, + .ccu_clk_mgr_base = ESUB_CLK_BASE_ADDR, + }, + .num_policy_masks = 1, + .policy_freq_offset = 0x00000008, + .freq_bit_shift = 8, + .policy_ctl_offset = 0x0000000c, + .policy0_mask_offset = 0x00000010, + .policy1_mask_offset = 0x00000014, + .policy2_mask_offset = 0x00000018, + .policy3_mask_offset = 0x0000001c, + .lvm_en_offset = 0x00000034, + .freq_id = 2, + .freq_tbl = esub_freq_tbl, +}; +#endif + +/* + * Bus clocks + */ + +/* KPM bus clocks */ +static struct bus_clock usb_otg_ahb_clk = { + .clk = { + .name = "usb_otg_ahb_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .freq_tbl = master_ahb_freq_tbl, + .data = &usb_otg_ahb_data, +}; + +static struct bus_clock sdio1_ahb_clk = { + .clk = { + .name = "sdio1_ahb_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .freq_tbl = master_ahb_freq_tbl, + .data = &sdio1_ahb_data, +}; + +static struct bus_clock sdio2_ahb_clk = { + .clk = { + .name = "sdio2_ahb_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .freq_tbl = master_ahb_freq_tbl, + .data = &sdio2_ahb_data, +}; + +static struct bus_clock sdio3_ahb_clk = { + .clk = { + .name = "sdio3_ahb_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .freq_tbl = master_ahb_freq_tbl, + .data = &sdio3_ahb_data, +}; + +static struct bus_clock sdio4_ahb_clk = { + .clk = { + .name = "sdio4_ahb_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .freq_tbl = master_ahb_freq_tbl, + .data = &sdio4_ahb_data, +}; + +static struct bus_clock bsc1_apb_clk = { + .clk = { + .name = "bsc1_apb_clk", + .parent = &kps_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .freq_tbl = slave_apb_freq_tbl, + .data = &bsc1_apb_data, +}; + +static struct bus_clock bsc2_apb_clk = { + .clk = { + .name = "bsc2_apb_clk", + .parent = &kps_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .freq_tbl = slave_apb_freq_tbl, + .data = &bsc2_apb_data, +}; + +static struct bus_clock bsc3_apb_clk = { + .clk = { + .name = "bsc3_apb_clk", + .parent = &kps_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .freq_tbl = slave_apb_freq_tbl, + .data = &bsc3_apb_data, +}; + +/* KPM peripheral */ +static struct peri_clock sdio1_clk = { + .clk = { + .name = "sdio1_clk", + .parent = &ref_52m.clk, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio1_data, +}; + +static struct peri_clock sdio2_clk = { + .clk = { + .name = "sdio2_clk", + .parent = &ref_52m.clk, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio2_data, +}; + +static struct peri_clock sdio3_clk = { + .clk = { + .name = "sdio3_clk", + .parent = &ref_52m.clk, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio3_data, +}; + +static struct peri_clock sdio4_clk = { + .clk = { + .name = "sdio4_clk", + .parent = &ref_52m.clk, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio4_data, +}; + +static struct peri_clock sdio1_sleep_clk = { + .clk = { + .name = "sdio1_sleep_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio1_sleep_data, +}; + +static struct peri_clock sdio2_sleep_clk = { + .clk = { + .name = "sdio2_sleep_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio2_sleep_data, +}; + +static struct peri_clock sdio3_sleep_clk = { + .clk = { + .name = "sdio3_sleep_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio3_sleep_data, +}; + +static struct peri_clock sdio4_sleep_clk = { + .clk = { + .name = "sdio4_sleep_clk", + .parent = &kpm_ccu_clk.clk, + .ops = &bus_clk_ops, + .ccu_clk_mgr_base = KONA_MST_CLK_BASE_ADDR, + }, + .data = &sdio4_sleep_data, +}; + +/* KPS peripheral clock */ +static struct peri_clock bsc1_clk = { + .clk = { + .name = "bsc1_clk", + .parent = &ref_13m.clk, + .rate = 13 * CLOCK_1M, + .div = 1, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .data = &bsc1_data, +}; + +static struct peri_clock bsc2_clk = { + .clk = { + .name = "bsc2_clk", + .parent = &ref_13m.clk, + .rate = 13 * CLOCK_1M, + .div = 1, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .data = &bsc2_data, +}; + +static struct peri_clock bsc3_clk = { + .clk = { + .name = "bsc3_clk", + .parent = &ref_13m.clk, + .rate = 13 * CLOCK_1M, + .div = 1, + .ops = &peri_clk_ops, + .ccu_clk_mgr_base = KONA_SLV_CLK_BASE_ADDR, + }, + .data = &bsc3_data, +}; + +/* public table for registering clocks */ +struct clk_lookup arch_clk_tbl[] = { + /* Peripheral clocks */ + CLK_LK(sdio1), + CLK_LK(sdio2), + CLK_LK(sdio3), + CLK_LK(sdio4), + CLK_LK(sdio1_sleep), + CLK_LK(sdio2_sleep), + CLK_LK(sdio3_sleep), + CLK_LK(sdio4_sleep), + CLK_LK(bsc1), + CLK_LK(bsc2), + CLK_LK(bsc3), + /* Bus clocks */ + CLK_LK(usb_otg_ahb), + CLK_LK(sdio1_ahb), + CLK_LK(sdio2_ahb), + CLK_LK(sdio3_ahb), + CLK_LK(sdio4_ahb), + CLK_LK(bsc1_apb), + CLK_LK(bsc2_apb), + CLK_LK(bsc3_apb), +#ifdef CONFIG_BCM_SF2_ETH + CLK_LK(esub_ccu), +#endif +}; + +/* public array size */ +unsigned int arch_clk_tbl_array_size = ARRAY_SIZE(arch_clk_tbl); diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-bsc.c b/arch/arm/cpu/armv7/bcm235xx/clk-bsc.c new file mode 100644 index 0000000000..d263068b48 --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-bsc.c @@ -0,0 +1,52 @@ +/* + * Copyright 2013 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/errno.h> +#include <asm/arch/sysmap.h> +#include <asm/kona-common/clk.h> +#include "clk-core.h" + +/* Enable appropriate clocks for a BSC/I2C port */ +int clk_bsc_enable(void *base) +{ + int ret; + char *bscstr, *apbstr; + + switch ((u32) base) { + case PMU_BSC_BASE_ADDR: + /* PMU clock is always enabled */ + return 0; + case BSC1_BASE_ADDR: + bscstr = "bsc1_clk"; + apbstr = "bsc1_apb_clk"; + break; + case BSC2_BASE_ADDR: + bscstr = "bsc2_clk"; + apbstr = "bsc2_apb_clk"; + break; + case BSC3_BASE_ADDR: + bscstr = "bsc3_clk"; + apbstr = "bsc3_apb_clk"; + break; + default: + printf("%s: base 0x%p not found\n", __func__, base); + return -EINVAL; + } + + /* Note that the bus clock must be enabled first */ + + ret = clk_get_and_enable(apbstr); + if (ret) + return ret; + + ret = clk_get_and_enable(bscstr); + if (ret) + return ret; + + return 0; +} diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-core.c b/arch/arm/cpu/armv7/bcm235xx/clk-core.c new file mode 100644 index 0000000000..2b5da6bb6b --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-core.c @@ -0,0 +1,513 @@ +/* + * Copyright 2013 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * + * bcm235xx architecture clock framework + * + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/errno.h> +#include <bitfield.h> +#include <asm/arch/sysmap.h> +#include <asm/kona-common/clk.h> +#include "clk-core.h" + +#define CLK_WR_ACCESS_PASSWORD 0x00a5a501 +#define WR_ACCESS_OFFSET 0 /* common to all clock blocks */ +#define POLICY_CTL_GO 1 /* Load and refresh policy masks */ +#define POLICY_CTL_GO_ATL 4 /* Active Load */ + +/* Helper function */ +int clk_get_and_enable(char *clkstr) +{ + int ret = 0; + struct clk *c; + + debug("%s: %s\n", __func__, clkstr); + + c = clk_get(clkstr); + if (c) { + ret = clk_enable(c); + if (ret) + return ret; + } else { + printf("%s: Couldn't find %s\n", __func__, clkstr); + return -EINVAL; + } + return ret; +} + +/* + * Poll a register in a CCU's address space, returning when the + * specified bit in that register's value is set (or clear). Delay + * a microsecond after each read of the register. Returns true if + * successful, or false if we gave up trying. + * + * Caller must ensure the CCU lock is held. + */ +#define CLK_GATE_DELAY_USEC 2000 +static inline int wait_bit(void *base, u32 offset, u32 bit, bool want) +{ + unsigned int tries; + u32 bit_mask = 1 << bit; + + for (tries = 0; tries < CLK_GATE_DELAY_USEC; tries++) { + u32 val; + bool bit_val; + + val = readl(base + offset); + bit_val = (val & bit_mask) ? 1 : 0; + if (bit_val == want) + return 0; /* success */ + udelay(1); + } + + debug("%s: timeout on addr 0x%p, waiting for bit %d to go to %d\n", + __func__, base + offset, bit, want); + + return -ETIMEDOUT; +} + +/* Enable a peripheral clock */ +static int peri_clk_enable(struct clk *c, int enable) +{ + int ret = 0; + u32 reg; + struct peri_clock *peri_clk = to_peri_clk(c); + struct peri_clk_data *cd = peri_clk->data; + struct bcm_clk_gate *gate = &cd->gate; + void *base = (void *)c->ccu_clk_mgr_base; + + + debug("%s: %s\n", __func__, c->name); + + clk_get_rate(c); /* Make sure rate and sel are filled in */ + + /* enable access */ + writel(CLK_WR_ACCESS_PASSWORD, base + WR_ACCESS_OFFSET); + + if (enable) { + debug("%s %s set rate %lu div %lu sel %d parent %lu\n", + __func__, c->name, c->rate, c->div, c->sel, + c->parent->rate); + + /* + * clkgate - only software controllable gates are + * supported by u-boot which includes all clocks + * that matter. This avoids bringing in a lot of extra + * complexity as done in the kernel framework. + */ + if (gate_exists(gate)) { + reg = readl(base + cd->gate.offset); + reg |= (1 << cd->gate.en_bit); + writel(reg, base + cd->gate.offset); + } + + /* div and pll select */ + if (divider_exists(&cd->div)) { + reg = readl(base + cd->div.offset); + bitfield_replace(reg, cd->div.shift, cd->div.width, + c->div - 1); + writel(reg, base + cd->div.offset); + } + + /* frequency selector */ + if (selector_exists(&cd->sel)) { + reg = readl(base + cd->sel.offset); + bitfield_replace(reg, cd->sel.shift, cd->sel.width, + c->sel); + writel(reg, base + cd->sel.offset); + } + + /* trigger */ + if (trigger_exists(&cd->trig)) { + writel((1 << cd->trig.bit), base + cd->trig.offset); + + /* wait for trigger status bit to go to 0 */ + ret = wait_bit(base, cd->trig.offset, cd->trig.bit, 0); + if (ret) + return ret; + } + + /* wait for running (status_bit = 1) */ + ret = wait_bit(base, cd->gate.offset, cd->gate.status_bit, 1); + if (ret) + return ret; + } else { + debug("%s disable clock %s\n", __func__, c->name); + + /* clkgate */ + reg = readl(base + cd->gate.offset); + reg &= ~(1 << cd->gate.en_bit); + writel(reg, base + cd->gate.offset); + + /* wait for stop (status_bit = 0) */ + ret = wait_bit(base, cd->gate.offset, cd->gate.status_bit, 0); + } + + /* disable access */ + writel(0, base + WR_ACCESS_OFFSET); + + return ret; +} + +/* Set the rate of a peripheral clock */ +static int peri_clk_set_rate(struct clk *c, unsigned long rate) +{ + int ret = 0; + int i; + unsigned long diff; + unsigned long new_rate = 0, div = 1; + struct peri_clock *peri_clk = to_peri_clk(c); + struct peri_clk_data *cd = peri_clk->data; + const char **clock; + + debug("%s: %s\n", __func__, c->name); + diff = rate; + + i = 0; + for (clock = cd->clocks; *clock; clock++, i++) { + struct refclk *ref = refclk_str_to_clk(*clock); + if (!ref) { + printf("%s: Lookup of %s failed\n", __func__, *clock); + return -EINVAL; + } + + /* round to the new rate */ + div = ref->clk.rate / rate; + if (div == 0) + div = 1; + + new_rate = ref->clk.rate / div; + + /* get the min diff */ + if (abs(new_rate - rate) < diff) { + diff = abs(new_rate - rate); + c->sel = i; + c->parent = &ref->clk; + c->rate = new_rate; + c->div = div; + } + } + + debug("%s %s set rate %lu div %lu sel %d parent %lu\n", __func__, + c->name, c->rate, c->div, c->sel, c->parent->rate); + return ret; +} + +/* Get the rate of a peripheral clock */ +static unsigned long peri_clk_get_rate(struct clk *c) +{ + struct peri_clock *peri_clk = to_peri_clk(c); + struct peri_clk_data *cd = peri_clk->data; + void *base = (void *)c->ccu_clk_mgr_base; + int div = 1; + const char **clock; + struct refclk *ref; + u32 reg; + + debug("%s: %s\n", __func__, c->name); + if (selector_exists(&cd->sel)) { + reg = readl(base + cd->sel.offset); + c->sel = bitfield_extract(reg, cd->sel.shift, cd->sel.width); + } else { + /* + * For peri clocks that don't have a selector, the single + * reference clock will always exist at index 0. + */ + c->sel = 0; + } + + if (divider_exists(&cd->div)) { + reg = readl(base + cd->div.offset); + div = bitfield_extract(reg, cd->div.shift, cd->div.width); + div += 1; + } + + clock = cd->clocks; + ref = refclk_str_to_clk(clock[c->sel]); + if (!ref) { + printf("%s: Can't lookup %s\n", __func__, clock[c->sel]); + return 0; + } + + c->parent = &ref->clk; + c->div = div; + c->rate = c->parent->rate / c->div; + debug("%s parent rate %lu div %d sel %d rate %lu\n", __func__, + c->parent->rate, div, c->sel, c->rate); + + return c->rate; +} + +/* Peripheral clock operations */ +struct clk_ops peri_clk_ops = { + .enable = peri_clk_enable, + .set_rate = peri_clk_set_rate, + .get_rate = peri_clk_get_rate, +}; + +/* Enable a CCU clock */ +static int ccu_clk_enable(struct clk *c, int enable) +{ + struct ccu_clock *ccu_clk = to_ccu_clk(c); + void *base = (void *)c->ccu_clk_mgr_base; + int ret = 0; + u32 reg; + + debug("%s: %s\n", __func__, c->name); + if (!enable) + return -EINVAL; /* CCU clock cannot shutdown */ + + /* enable access */ + writel(CLK_WR_ACCESS_PASSWORD, base + WR_ACCESS_OFFSET); + + /* config enable for policy engine */ + writel(1, base + ccu_clk->lvm_en_offset); + + /* wait for bit to go to 0 */ + ret = wait_bit(base, ccu_clk->lvm_en_offset, 0, 0); + if (ret) + return ret; + + /* freq ID */ + if (!ccu_clk->freq_bit_shift) + ccu_clk->freq_bit_shift = 8; + + /* Set frequency id for each of the 4 policies */ + reg = ccu_clk->freq_id | + (ccu_clk->freq_id << (ccu_clk->freq_bit_shift)) | + (ccu_clk->freq_id << (ccu_clk->freq_bit_shift * 2)) | + (ccu_clk->freq_id << (ccu_clk->freq_bit_shift * 3)); + writel(reg, base + ccu_clk->policy_freq_offset); + + /* enable all clock mask */ + writel(0x7fffffff, base + ccu_clk->policy0_mask_offset); + writel(0x7fffffff, base + ccu_clk->policy1_mask_offset); + writel(0x7fffffff, base + ccu_clk->policy2_mask_offset); + writel(0x7fffffff, base + ccu_clk->policy3_mask_offset); + + if (ccu_clk->num_policy_masks == 2) { + writel(0x7fffffff, base + ccu_clk->policy0_mask2_offset); + writel(0x7fffffff, base + ccu_clk->policy1_mask2_offset); + writel(0x7fffffff, base + ccu_clk->policy2_mask2_offset); + writel(0x7fffffff, base + ccu_clk->policy3_mask2_offset); + } + + /* start policy engine */ + reg = readl(base + ccu_clk->policy_ctl_offset); + reg |= (POLICY_CTL_GO + POLICY_CTL_GO_ATL); + writel(reg, base + ccu_clk->policy_ctl_offset); + + /* wait till started */ + ret = wait_bit(base, ccu_clk->policy_ctl_offset, 0, 0); + if (ret) + return ret; + + /* disable access */ + writel(0, base + WR_ACCESS_OFFSET); + + return ret; +} + +/* Get the CCU clock rate */ +static unsigned long ccu_clk_get_rate(struct clk *c) +{ + struct ccu_clock *ccu_clk = to_ccu_clk(c); + debug("%s: %s\n", __func__, c->name); + c->rate = ccu_clk->freq_tbl[ccu_clk->freq_id]; + return c->rate; +} + +/* CCU clock operations */ +struct clk_ops ccu_clk_ops = { + .enable = ccu_clk_enable, + .get_rate = ccu_clk_get_rate, +}; + +/* Enable a bus clock */ +static int bus_clk_enable(struct clk *c, int enable) +{ + struct bus_clock *bus_clk = to_bus_clk(c); + struct bus_clk_data *cd = bus_clk->data; + void *base = (void *)c->ccu_clk_mgr_base; + int ret = 0; + u32 reg; + + debug("%s: %s\n", __func__, c->name); + /* enable access */ + writel(CLK_WR_ACCESS_PASSWORD, base + WR_ACCESS_OFFSET); + + /* enable gating */ + reg = readl(base + cd->gate.offset); + if (!!(reg & (1 << cd->gate.status_bit)) == !!enable) + debug("%s already %s\n", c->name, + enable ? "enabled" : "disabled"); + else { + int want = (enable) ? 1 : 0; + reg |= (1 << cd->gate.hw_sw_sel_bit); + + if (enable) + reg |= (1 << cd->gate.en_bit); + else + reg &= ~(1 << cd->gate.en_bit); + + writel(reg, base + cd->gate.offset); + ret = wait_bit(base, cd->gate.offset, cd->gate.status_bit, + want); + if (ret) + return ret; + } + + /* disable access */ + writel(0, base + WR_ACCESS_OFFSET); + + return ret; +} + +/* Get the rate of a bus clock */ +static unsigned long bus_clk_get_rate(struct clk *c) +{ + struct bus_clock *bus_clk = to_bus_clk(c); + struct ccu_clock *ccu_clk; + + debug("%s: %s\n", __func__, c->name); + ccu_clk = to_ccu_clk(c->parent); + + c->rate = bus_clk->freq_tbl[ccu_clk->freq_id]; + c->div = ccu_clk->freq_tbl[ccu_clk->freq_id] / c->rate; + return c->rate; +} + +/* Bus clock operations */ +struct clk_ops bus_clk_ops = { + .enable = bus_clk_enable, + .get_rate = bus_clk_get_rate, +}; + +/* Enable a reference clock */ +static int ref_clk_enable(struct clk *c, int enable) +{ + debug("%s: %s\n", __func__, c->name); + return 0; +} + +/* Reference clock operations */ +struct clk_ops ref_clk_ops = { + .enable = ref_clk_enable, +}; + +/* + * clk.h implementation follows + */ + +/* Initialize the clock framework */ +int clk_init(void) +{ + debug("%s:\n", __func__); + return 0; +} + +/* Get a clock handle, give a name string */ +struct clk *clk_get(const char *con_id) +{ + int i; + struct clk_lookup *clk_tblp; + + debug("%s: %s\n", __func__, con_id); + + clk_tblp = arch_clk_tbl; + for (i = 0; i < arch_clk_tbl_array_size; i++, clk_tblp++) { + if (clk_tblp->con_id) { + if (!con_id || strcmp(clk_tblp->con_id, con_id)) + continue; + return clk_tblp->clk; + } + } + return NULL; +} + +/* Enable a clock */ +int clk_enable(struct clk *c) +{ + int ret = 0; + + debug("%s: %s\n", __func__, c->name); + if (!c->ops || !c->ops->enable) + return -1; + + /* enable parent clock first */ + if (c->parent) + ret = clk_enable(c->parent); + + if (ret) + return ret; + + if (!c->use_cnt) { + c->use_cnt++; + ret = c->ops->enable(c, 1); + } + + return ret; +} + +/* Disable a clock */ +void clk_disable(struct clk *c) +{ + debug("%s: %s\n", __func__, c->name); + if (!c->ops || !c->ops->enable) + return; + + if (c->use_cnt) { + c->use_cnt--; + c->ops->enable(c, 0); + } + + /* disable parent */ + if (c->parent) + clk_disable(c->parent); +} + +/* Get the clock rate */ +unsigned long clk_get_rate(struct clk *c) +{ + unsigned long rate; + + debug("%s: %s\n", __func__, c->name); + if (!c || !c->ops || !c->ops->get_rate) + return 0; + + rate = c->ops->get_rate(c); + debug("%s: rate = %ld\n", __func__, rate); + return rate; +} + +/* Set the clock rate */ +int clk_set_rate(struct clk *c, unsigned long rate) +{ + int ret; + + debug("%s: %s rate=%ld\n", __func__, c->name, rate); + if (!c || !c->ops || !c->ops->set_rate) + return -EINVAL; + + if (c->use_cnt) + return -EINVAL; + + ret = c->ops->set_rate(c, rate); + + return ret; +} + +/* Not required for this arch */ +/* +long clk_round_rate(struct clk *clk, unsigned long rate); +int clk_set_parent(struct clk *clk, struct clk *parent); +struct clk *clk_get_parent(struct clk *clk); +*/ diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-core.h b/arch/arm/cpu/armv7/bcm235xx/clk-core.h new file mode 100644 index 0000000000..de9a1efdd5 --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-core.h @@ -0,0 +1,491 @@ +/* + * Copyright 2013 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/stddef.h> + +#ifdef CONFIG_CLK_DEBUG +#undef writel +#undef readl +static inline void writel(u32 val, void *addr) +{ + printf("Write [0x%p] = 0x%08x\n", addr, val); + *(u32 *)addr = val; +} + +static inline u32 readl(void *addr) +{ + u32 val = *(u32 *)addr; + printf("Read [0x%p] = 0x%08x\n", addr, val); + return val; +} +#endif + +struct clk; + +struct clk_lookup { + const char *dev_id; + const char *con_id; + struct clk *clk; +}; + +extern struct clk_lookup arch_clk_tbl[]; +extern unsigned int arch_clk_tbl_array_size; + +/** + * struct clk_ops - standard clock operations + * @enable: enable/disable clock, see clk_enable() and clk_disable() + * @set_rate: set the clock rate, see clk_set_rate(). + * @get_rate: get the clock rate, see clk_get_rate(). + * @round_rate: round a given clock rate, see clk_round_rate(). + * @set_parent: set the clock's parent, see clk_set_parent(). + * + * Group the common clock implementations together so that we + * don't have to keep setting the same fiels again. We leave + * enable in struct clk. + * + */ +struct clk_ops { + int (*enable)(struct clk *c, int enable); + int (*set_rate)(struct clk *c, unsigned long rate); + unsigned long (*get_rate)(struct clk *c); + unsigned long (*round_rate)(struct clk *c, unsigned long rate); + int (*set_parent)(struct clk *c, struct clk *parent); +}; + +struct clk { + struct clk *parent; + const char *name; + int use_cnt; + unsigned long rate; /* in HZ */ + + /* programmable divider. 0 means fixed ratio to parent clock */ + unsigned long div; + + struct clk_src *src; + struct clk_ops *ops; + + unsigned long ccu_clk_mgr_base; + int sel; +}; + +struct refclk *refclk_str_to_clk(const char *name); + +/* The common clock framework uses u8 to represent a parent index */ +#define PARENT_COUNT_MAX ((u32)U8_MAX) + +#define BAD_CLK_INDEX U8_MAX /* Can't ever be valid */ +#define BAD_CLK_NAME ((const char *)-1) + +#define BAD_SCALED_DIV_VALUE U64_MAX + +/* + * Utility macros for object flag management. If possible, flags + * should be defined such that 0 is the desired default value. + */ +#define FLAG(type, flag) BCM_CLK_ ## type ## _FLAGS_ ## flag +#define FLAG_SET(obj, type, flag) ((obj)->flags |= FLAG(type, flag)) +#define FLAG_CLEAR(obj, type, flag) ((obj)->flags &= ~(FLAG(type, flag))) +#define FLAG_FLIP(obj, type, flag) ((obj)->flags ^= FLAG(type, flag)) +#define FLAG_TEST(obj, type, flag) (!!((obj)->flags & FLAG(type, flag))) + +/* Clock field state tests */ + +#define gate_exists(gate) FLAG_TEST(gate, GATE, EXISTS) +#define gate_is_enabled(gate) FLAG_TEST(gate, GATE, ENABLED) +#define gate_is_hw_controllable(gate) FLAG_TEST(gate, GATE, HW) +#define gate_is_sw_controllable(gate) FLAG_TEST(gate, GATE, SW) +#define gate_is_sw_managed(gate) FLAG_TEST(gate, GATE, SW_MANAGED) +#define gate_is_no_disable(gate) FLAG_TEST(gate, GATE, NO_DISABLE) + +#define gate_flip_enabled(gate) FLAG_FLIP(gate, GATE, ENABLED) + +#define divider_exists(div) FLAG_TEST(div, DIV, EXISTS) +#define divider_is_fixed(div) FLAG_TEST(div, DIV, FIXED) +#define divider_has_fraction(div) (!divider_is_fixed(div) && \ + (div)->frac_width > 0) + +#define selector_exists(sel) ((sel)->width != 0) +#define trigger_exists(trig) FLAG_TEST(trig, TRIG, EXISTS) + +/* Clock type, used to tell common block what it's part of */ +enum bcm_clk_type { + bcm_clk_none, /* undefined clock type */ + bcm_clk_bus, + bcm_clk_core, + bcm_clk_peri +}; + +/* + * Gating control and status is managed by a 32-bit gate register. + * + * There are several types of gating available: + * - (no gate) + * A clock with no gate is assumed to be always enabled. + * - hardware-only gating (auto-gating) + * Enabling or disabling clocks with this type of gate is + * managed automatically by the hardware. Such clocks can be + * considered by the software to be enabled. The current status + * of auto-gated clocks can be read from the gate status bit. + * - software-only gating + * Auto-gating is not available for this type of clock. + * Instead, software manages whether it's enabled by setting or + * clearing the enable bit. The current gate status of a gate + * under software control can be read from the gate status bit. + * To ensure a change to the gating status is complete, the + * status bit can be polled to verify that the gate has entered + * the desired state. + * - selectable hardware or software gating + * Gating for this type of clock can be configured to be either + * under software or hardware control. Which type is in use is + * determined by the hw_sw_sel bit of the gate register. + */ +struct bcm_clk_gate { + u32 offset; /* gate register offset */ + u32 status_bit; /* 0: gate is disabled; 0: gatge is enabled */ + u32 en_bit; /* 0: disable; 1: enable */ + u32 hw_sw_sel_bit; /* 0: hardware gating; 1: software gating */ + u32 flags; /* BCM_CLK_GATE_FLAGS_* below */ +}; + +/* + * Gate flags: + * HW means this gate can be auto-gated + * SW means the state of this gate can be software controlled + * NO_DISABLE means this gate is (only) enabled if under software control + * SW_MANAGED means the status of this gate is under software control + * ENABLED means this software-managed gate is *supposed* to be enabled + */ +#define BCM_CLK_GATE_FLAGS_EXISTS ((u32)1 << 0) /* Gate is valid */ +#define BCM_CLK_GATE_FLAGS_HW ((u32)1 << 1) /* Can auto-gate */ +#define BCM_CLK_GATE_FLAGS_SW ((u32)1 << 2) /* Software control */ +#define BCM_CLK_GATE_FLAGS_NO_DISABLE ((u32)1 << 3) /* HW or enabled */ +#define BCM_CLK_GATE_FLAGS_SW_MANAGED ((u32)1 << 4) /* SW now in control */ +#define BCM_CLK_GATE_FLAGS_ENABLED ((u32)1 << 5) /* If SW_MANAGED */ + +/* + * Gate initialization macros. + * + * Any gate initially under software control will be enabled. + */ + +/* A hardware/software gate initially under software control */ +#define HW_SW_GATE(_offset, _status_bit, _en_bit, _hw_sw_sel_bit) \ + { \ + .offset = (_offset), \ + .status_bit = (_status_bit), \ + .en_bit = (_en_bit), \ + .hw_sw_sel_bit = (_hw_sw_sel_bit), \ + .flags = FLAG(GATE, HW)|FLAG(GATE, SW)| \ + FLAG(GATE, SW_MANAGED)|FLAG(GATE, ENABLED)| \ + FLAG(GATE, EXISTS), \ + } + +/* A hardware/software gate initially under hardware control */ +#define HW_SW_GATE_AUTO(_offset, _status_bit, _en_bit, _hw_sw_sel_bit) \ + { \ + .offset = (_offset), \ + .status_bit = (_status_bit), \ + .en_bit = (_en_bit), \ + .hw_sw_sel_bit = (_hw_sw_sel_bit), \ + .flags = FLAG(GATE, HW)|FLAG(GATE, SW)| \ + FLAG(GATE, EXISTS), \ + } + +/* A hardware-or-enabled gate (enabled if not under hardware control) */ +#define HW_ENABLE_GATE(_offset, _status_bit, _en_bit, _hw_sw_sel_bit) \ + { \ + .offset = (_offset), \ + .status_bit = (_status_bit), \ + .en_bit = (_en_bit), \ + .hw_sw_sel_bit = (_hw_sw_sel_bit), \ + .flags = FLAG(GATE, HW)|FLAG(GATE, SW)| \ + FLAG(GATE, NO_DISABLE)|FLAG(GATE, EXISTS), \ + } + +/* A software-only gate */ +#define SW_ONLY_GATE(_offset, _status_bit, _en_bit) \ + { \ + .offset = (_offset), \ + .status_bit = (_status_bit), \ + .en_bit = (_en_bit), \ + .flags = FLAG(GATE, SW)|FLAG(GATE, SW_MANAGED)| \ + FLAG(GATE, ENABLED)|FLAG(GATE, EXISTS), \ + } + +/* A hardware-only gate */ +#define HW_ONLY_GATE(_offset, _status_bit) \ + { \ + .offset = (_offset), \ + .status_bit = (_status_bit), \ + .flags = FLAG(GATE, HW)|FLAG(GATE, EXISTS), \ + } + +/* + * Each clock can have zero, one, or two dividers which change the + * output rate of the clock. Each divider can be either fixed or + * variable. If there are two dividers, they are the "pre-divider" + * and the "regular" or "downstream" divider. If there is only one, + * there is no pre-divider. + * + * A fixed divider is any non-zero (positive) value, and it + * indicates how the input rate is affected by the divider. + * + * The value of a variable divider is maintained in a sub-field of a + * 32-bit divider register. The position of the field in the + * register is defined by its offset and width. The value recorded + * in this field is always 1 less than the value it represents. + * + * In addition, a variable divider can indicate that some subset + * of its bits represent a "fractional" part of the divider. Such + * bits comprise the low-order portion of the divider field, and can + * be viewed as representing the portion of the divider that lies to + * the right of the decimal point. Most variable dividers have zero + * fractional bits. Variable dividers with non-zero fraction width + * still record a value 1 less than the value they represent; the + * added 1 does *not* affect the low-order bit in this case, it + * affects the bits above the fractional part only. (Often in this + * code a divider field value is distinguished from the value it + * represents by referring to the latter as a "divisor".) + * + * In order to avoid dealing with fractions, divider arithmetic is + * performed using "scaled" values. A scaled value is one that's + * been left-shifted by the fractional width of a divider. Dividing + * a scaled value by a scaled divisor produces the desired quotient + * without loss of precision and without any other special handling + * for fractions. + * + * The recorded value of a variable divider can be modified. To + * modify either divider (or both), a clock must be enabled (i.e., + * using its gate). In addition, a trigger register (described + * below) must be used to commit the change, and polled to verify + * the change is complete. + */ +struct bcm_clk_div { + union { + struct { /* variable divider */ + u32 offset; /* divider register offset */ + u32 shift; /* field shift */ + u32 width; /* field width */ + u32 frac_width; /* field fraction width */ + + u64 scaled_div; /* scaled divider value */ + }; + u32 fixed; /* non-zero fixed divider value */ + }; + u32 flags; /* BCM_CLK_DIV_FLAGS_* below */ +}; + +/* + * Divider flags: + * EXISTS means this divider exists + * FIXED means it is a fixed-rate divider + */ +#define BCM_CLK_DIV_FLAGS_EXISTS ((u32)1 << 0) /* Divider is valid */ +#define BCM_CLK_DIV_FLAGS_FIXED ((u32)1 << 1) /* Fixed-value */ + +/* Divider initialization macros */ + +/* A fixed (non-zero) divider */ +#define FIXED_DIVIDER(_value) \ + { \ + .fixed = (_value), \ + .flags = FLAG(DIV, EXISTS)|FLAG(DIV, FIXED), \ + } + +/* A divider with an integral divisor */ +#define DIVIDER(_offset, _shift, _width) \ + { \ + .offset = (_offset), \ + .shift = (_shift), \ + .width = (_width), \ + .scaled_div = BAD_SCALED_DIV_VALUE, \ + .flags = FLAG(DIV, EXISTS), \ + } + +/* A divider whose divisor has an integer and fractional part */ +#define FRAC_DIVIDER(_offset, _shift, _width, _frac_width) \ + { \ + .offset = (_offset), \ + .shift = (_shift), \ + .width = (_width), \ + .frac_width = (_frac_width), \ + .scaled_div = BAD_SCALED_DIV_VALUE, \ + .flags = FLAG(DIV, EXISTS), \ + } + +/* + * Clocks may have multiple "parent" clocks. If there is more than + * one, a selector must be specified to define which of the parent + * clocks is currently in use. The selected clock is indicated in a + * sub-field of a 32-bit selector register. The range of + * representable selector values typically exceeds the number of + * available parent clocks. Occasionally the reset value of a + * selector field is explicitly set to a (specific) value that does + * not correspond to a defined input clock. + * + * We register all known parent clocks with the common clock code + * using a packed array (i.e., no empty slots) of (parent) clock + * names, and refer to them later using indexes into that array. + * We maintain an array of selector values indexed by common clock + * index values in order to map between these common clock indexes + * and the selector values used by the hardware. + * + * Like dividers, a selector can be modified, but to do so a clock + * must be enabled, and a trigger must be used to commit the change. + */ +struct bcm_clk_sel { + u32 offset; /* selector register offset */ + u32 shift; /* field shift */ + u32 width; /* field width */ + + u32 parent_count; /* number of entries in parent_sel[] */ + u32 *parent_sel; /* array of parent selector values */ + u8 clk_index; /* current selected index in parent_sel[] */ +}; + +/* Selector initialization macro */ +#define SELECTOR(_offset, _shift, _width) \ + { \ + .offset = (_offset), \ + .shift = (_shift), \ + .width = (_width), \ + .clk_index = BAD_CLK_INDEX, \ + } + +/* + * Making changes to a variable divider or a selector for a clock + * requires the use of a trigger. A trigger is defined by a single + * bit within a register. To signal a change, a 1 is written into + * that bit. To determine when the change has been completed, that + * trigger bit is polled; the read value will be 1 while the change + * is in progress, and 0 when it is complete. + * + * Occasionally a clock will have more than one trigger. In this + * case, the "pre-trigger" will be used when changing a clock's + * selector and/or its pre-divider. + */ +struct bcm_clk_trig { + u32 offset; /* trigger register offset */ + u32 bit; /* trigger bit */ + u32 flags; /* BCM_CLK_TRIG_FLAGS_* below */ +}; + +/* + * Trigger flags: + * EXISTS means this trigger exists + */ +#define BCM_CLK_TRIG_FLAGS_EXISTS ((u32)1 << 0) /* Trigger is valid */ + +/* Trigger initialization macro */ +#define TRIGGER(_offset, _bit) \ + { \ + .offset = (_offset), \ + .bit = (_bit), \ + .flags = FLAG(TRIG, EXISTS), \ + } + +struct bus_clk_data { + struct bcm_clk_gate gate; +}; + +struct core_clk_data { + struct bcm_clk_gate gate; +}; + +struct peri_clk_data { + struct bcm_clk_gate gate; + struct bcm_clk_trig pre_trig; + struct bcm_clk_div pre_div; + struct bcm_clk_trig trig; + struct bcm_clk_div div; + struct bcm_clk_sel sel; + const char *clocks[]; /* must be last; use CLOCKS() to declare */ +}; +#define CLOCKS(...) { __VA_ARGS__, NULL, } +#define NO_CLOCKS { NULL, } /* Must use of no parent clocks */ + +struct refclk { + struct clk clk; +}; + +struct peri_clock { + struct clk clk; + struct peri_clk_data *data; +}; + +struct ccu_clock { + struct clk clk; + + int num_policy_masks; + unsigned long policy_freq_offset; + int freq_bit_shift; /* 8 for most CCUs */ + unsigned long policy_ctl_offset; + unsigned long policy0_mask_offset; + unsigned long policy1_mask_offset; + unsigned long policy2_mask_offset; + unsigned long policy3_mask_offset; + unsigned long policy0_mask2_offset; + unsigned long policy1_mask2_offset; + unsigned long policy2_mask2_offset; + unsigned long policy3_mask2_offset; + unsigned long lvm_en_offset; + + int freq_id; + unsigned long *freq_tbl; +}; + +struct bus_clock { + struct clk clk; + struct bus_clk_data *data; + unsigned long *freq_tbl; +}; + +struct ref_clock { + struct clk clk; +}; + +static inline int is_same_clock(struct clk *a, struct clk *b) +{ + return a == b; +} + +#define to_clk(p) (&((p)->clk)) +#define name_to_clk(name) (&((name##_clk).clk)) +/* declare a struct clk_lookup */ +#define CLK_LK(name) \ +{.con_id = __stringify(name##_clk), .clk = name_to_clk(name),} + +static inline struct refclk *to_refclk(struct clk *clock) +{ + return container_of(clock, struct refclk, clk); +} + +static inline struct peri_clock *to_peri_clk(struct clk *clock) +{ + return container_of(clock, struct peri_clock, clk); +} + +static inline struct ccu_clock *to_ccu_clk(struct clk *clock) +{ + return container_of(clock, struct ccu_clock, clk); +} + +static inline struct bus_clock *to_bus_clk(struct clk *clock) +{ + return container_of(clock, struct bus_clock, clk); +} + +static inline struct ref_clock *to_ref_clk(struct clk *clock) +{ + return container_of(clock, struct ref_clock, clk); +} + +extern struct clk_ops peri_clk_ops; +extern struct clk_ops ccu_clk_ops; +extern struct clk_ops bus_clk_ops; +extern struct clk_ops ref_clk_ops; + +int clk_get_and_enable(char *clkstr); diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-eth.c b/arch/arm/cpu/armv7/bcm235xx/clk-eth.c new file mode 100644 index 0000000000..b0b92b9df7 --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-eth.c @@ -0,0 +1,143 @@ +/* + * Copyright 2014 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/errno.h> +#include <asm/arch/sysmap.h> +#include <asm/kona-common/clk.h> +#include "clk-core.h" + +#define WR_ACCESS_ADDR ESUB_CLK_BASE_ADDR +#define WR_ACCESS_PASSWORD 0xA5A500 + +#define PLLE_POST_RESETB_ADDR (ESUB_CLK_BASE_ADDR + 0x00000C00) + +#define PLLE_RESETB_ADDR (ESUB_CLK_BASE_ADDR + 0x00000C58) +#define PLLE_RESETB_I_PLL_RESETB_PLLE_MASK 0x00010000 +#define PLLE_POST_RESETB_I_POST_RESETB_PLLE_MASK 0x00000001 + +#define PLL_LOCK_ADDR (ESUB_CLK_BASE_ADDR + 0x00000C38) +#define PLL_LOCK_PLL_LOCK_PLLE_MASK 0x00000001 + +#define ESW_SYS_DIV_ADDR (ESUB_CLK_BASE_ADDR + 0x00000A04) +#define ESW_SYS_DIV_PLL_SELECT_MASK 0x00000300 +#define ESW_SYS_DIV_DIV_MASK 0x0000001C +#define ESW_SYS_DIV_PLL_VAR_208M_CLK_SELECT 0x00000100 +#define ESW_SYS_DIV_DIV_SELECT 0x4 +#define ESW_SYS_DIV_TRIGGER_MASK 0x00000001 + +#define ESUB_AXI_DIV_DEBUG_ADDR (ESUB_CLK_BASE_ADDR + 0x00000E04) +#define ESUB_AXI_DIV_DEBUG_PLL_SELECT_MASK 0x0000001C +#define ESUB_AXI_DIV_DEBUG_PLL_SELECT_OVERRIDE_MASK 0x00000040 +#define ESUB_AXI_DIV_DEBUG_PLL_VAR_208M_CLK_SELECT 0x0 +#define ESUB_AXI_DIV_DEBUG_TRIGGER_MASK 0x00000001 + +#define PLL_MAX_RETRY 100 + +/* Enable appropriate clocks for Ethernet */ +int clk_eth_enable(void) +{ + int rc = -1; + int retry_count = 0; + rc = clk_get_and_enable("esub_ccu_clk"); + + /* Enable Access to CCU registers */ + writel((1 | WR_ACCESS_PASSWORD), WR_ACCESS_ADDR); + + writel(readl(PLLE_POST_RESETB_ADDR) & + ~PLLE_POST_RESETB_I_POST_RESETB_PLLE_MASK, + PLLE_POST_RESETB_ADDR); + + /* Take PLL out of reset and put into normal mode */ + writel(readl(PLLE_RESETB_ADDR) | PLLE_RESETB_I_PLL_RESETB_PLLE_MASK, + PLLE_RESETB_ADDR); + + /* Wait for PLL lock */ + rc = -1; + while (retry_count < PLL_MAX_RETRY) { + udelay(100); + if (readl(PLL_LOCK_ADDR) & PLL_LOCK_PLL_LOCK_PLLE_MASK) { + rc = 0; + break; + } + retry_count++; + } + + if (rc == -1) { + printf("%s: ETH-PLL lock timeout, Ethernet is not enabled!\n", + __func__); + return -1; + } + + writel(readl(PLLE_POST_RESETB_ADDR) | + PLLE_POST_RESETB_I_POST_RESETB_PLLE_MASK, + PLLE_POST_RESETB_ADDR); + + /* Switch esw_sys_clk to use 104MHz(208MHz/2) clock */ + writel((readl(ESW_SYS_DIV_ADDR) & + ~(ESW_SYS_DIV_PLL_SELECT_MASK | ESW_SYS_DIV_DIV_MASK)) | + ESW_SYS_DIV_PLL_VAR_208M_CLK_SELECT | ESW_SYS_DIV_DIV_SELECT, + ESW_SYS_DIV_ADDR); + + writel(readl(ESW_SYS_DIV_ADDR) | ESW_SYS_DIV_TRIGGER_MASK, + ESW_SYS_DIV_ADDR); + + /* Wait for trigger complete */ + rc = -1; + retry_count = 0; + while (retry_count < PLL_MAX_RETRY) { + udelay(100); + if (!(readl(ESW_SYS_DIV_ADDR) & ESW_SYS_DIV_TRIGGER_MASK)) { + rc = 0; + break; + } + retry_count++; + } + + if (rc == -1) { + printf("%s: SYS CLK Trigger timeout, Ethernet is not enabled!\n", + __func__); + return -1; + } + + /* switch Esub AXI clock to 208MHz */ + writel((readl(ESUB_AXI_DIV_DEBUG_ADDR) & + ~(ESUB_AXI_DIV_DEBUG_PLL_SELECT_MASK | + ESUB_AXI_DIV_DEBUG_PLL_SELECT_OVERRIDE_MASK | + ESUB_AXI_DIV_DEBUG_TRIGGER_MASK)) | + ESUB_AXI_DIV_DEBUG_PLL_VAR_208M_CLK_SELECT | + ESUB_AXI_DIV_DEBUG_PLL_SELECT_OVERRIDE_MASK, + ESUB_AXI_DIV_DEBUG_ADDR); + + writel(readl(ESUB_AXI_DIV_DEBUG_ADDR) | + ESUB_AXI_DIV_DEBUG_TRIGGER_MASK, + ESUB_AXI_DIV_DEBUG_ADDR); + + /* Wait for trigger complete */ + rc = -1; + retry_count = 0; + while (retry_count < PLL_MAX_RETRY) { + udelay(100); + if (!(readl(ESUB_AXI_DIV_DEBUG_ADDR) & + ESUB_AXI_DIV_DEBUG_TRIGGER_MASK)) { + rc = 0; + break; + } + retry_count++; + } + + if (rc == -1) { + printf("%s: AXI CLK Trigger timeout, Ethernet is not enabled!\n", + __func__); + return -1; + } + + /* Disable Access to CCU registers */ + writel(WR_ACCESS_PASSWORD, WR_ACCESS_ADDR); + + return rc; +} diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-sdio.c b/arch/arm/cpu/armv7/bcm235xx/clk-sdio.c new file mode 100644 index 0000000000..b2ce6d6783 --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-sdio.c @@ -0,0 +1,73 @@ +/* + * Copyright 2013 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/errno.h> +#include <asm/arch/sysmap.h> +#include <asm/kona-common/clk.h> +#include "clk-core.h" + +/* Enable appropriate clocks for an SDIO port */ +int clk_sdio_enable(void *base, u32 rate, u32 *actual_ratep) +{ + int ret; + struct clk *c; + + char *clkstr; + char *slpstr; + char *ahbstr; + + switch ((u32) base) { + case CONFIG_SYS_SDIO_BASE0: + clkstr = CONFIG_SYS_SDIO0 "_clk"; + ahbstr = CONFIG_SYS_SDIO0 "_ahb_clk"; + slpstr = CONFIG_SYS_SDIO0 "_sleep_clk"; + break; + case CONFIG_SYS_SDIO_BASE1: + clkstr = CONFIG_SYS_SDIO1 "_clk"; + ahbstr = CONFIG_SYS_SDIO1 "_ahb_clk"; + slpstr = CONFIG_SYS_SDIO1 "_sleep_clk"; + break; + case CONFIG_SYS_SDIO_BASE2: + clkstr = CONFIG_SYS_SDIO2 "_clk"; + ahbstr = CONFIG_SYS_SDIO2 "_ahb_clk"; + slpstr = CONFIG_SYS_SDIO2 "_sleep_clk"; + break; + case CONFIG_SYS_SDIO_BASE3: + clkstr = CONFIG_SYS_SDIO3 "_clk"; + ahbstr = CONFIG_SYS_SDIO3 "_ahb_clk"; + slpstr = CONFIG_SYS_SDIO3 "_sleep_clk"; + break; + default: + printf("%s: base 0x%p not found\n", __func__, base); + return -EINVAL; + } + + ret = clk_get_and_enable(ahbstr); + if (ret) + return ret; + + ret = clk_get_and_enable(slpstr); + if (ret) + return ret; + + c = clk_get(clkstr); + if (c) { + ret = clk_set_rate(c, rate); + if (ret) + return ret; + + ret = clk_enable(c); + if (ret) + return ret; + } else { + printf("%s: Couldn't find %s\n", __func__, clkstr); + return -EINVAL; + } + *actual_ratep = rate; + return 0; +} diff --git a/arch/arm/cpu/armv7/bcm235xx/clk-usb-otg.c b/arch/arm/cpu/armv7/bcm235xx/clk-usb-otg.c new file mode 100644 index 0000000000..1d7c5af76d --- /dev/null +++ b/arch/arm/cpu/armv7/bcm235xx/clk-usb-otg.c @@ -0,0 +1,27 @@ +/* + * Copyright 2014 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/errno.h> +#include <asm/arch/sysmap.h> +#include "clk-core.h" + +/* Enable appropriate clocks for the USB OTG port */ +int clk_usb_otg_enable(void *base) +{ + char *ahbstr; + + switch ((u32) base) { + case HSOTG_BASE_ADDR: + ahbstr = "usb_otg_ahb_clk"; + break; + default: + printf("%s: base 0x%p not found\n", __func__, base); + return -EINVAL; + } + + return clk_get_and_enable(ahbstr); +} diff --git a/arch/arm/cpu/armv7/kona-common/Makefile b/arch/arm/cpu/armv7/kona-common/Makefile index da225cb4f7..5167ebbef9 100644 --- a/arch/arm/cpu/armv7/kona-common/Makefile +++ b/arch/arm/cpu/armv7/kona-common/Makefile @@ -7,3 +7,4 @@ obj-y += s_init.o obj-y += hwinit-common.o obj-y += clk-stubs.o +obj-${CONFIG_KONA_RESET_S} += reset.o diff --git a/arch/arm/cpu/armv7/kona-common/reset.S b/arch/arm/cpu/armv7/kona-common/reset.S new file mode 100644 index 0000000000..220a1ecfc1 --- /dev/null +++ b/arch/arm/cpu/armv7/kona-common/reset.S @@ -0,0 +1,26 @@ +/* + * Copyright 2013 Broadcom Corporation. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +.globl reset_cpu +reset_cpu: + ldr r1, =0x35001f00 + ldr r2, [r1] + ldr r4, =0x80000000 + and r4, r2, r4 + ldr r3, =0xA5A500 + orr r4, r4, r3 + orr r4, r4, #0x1 + + str r4, [r1] + + ldr r1, =0x35001f04 + ldr r2, [r1] + ldr r4, =0x80000000 + and r4, r2, r4 + str r4, [r1] + +_loop_forever: + b _loop_forever diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index e6f227548a..ff932aa7ed 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -97,7 +97,7 @@ void enable_enet_clk(unsigned char enable) { u32 mask, *addr; - if (is_cpu_type(MXC_CPU_MX6UL)) { + if (is_mx6ul()) { mask = MXC_CCM_CCGR3_ENET_MASK; addr = &imx_ccm->CCGR3; } else { @@ -117,7 +117,7 @@ void enable_uart_clk(unsigned char enable) { u32 mask; - if (is_cpu_type(MXC_CPU_MX6UL)) + if (is_mx6ul()) mask = MXC_CCM_CCGR5_UART_MASK; else mask = MXC_CCM_CCGR5_UART_MASK | MXC_CCM_CCGR5_UART_SERIAL_MASK; @@ -168,7 +168,7 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num) reg &= ~mask; __raw_writel(reg, &imx_ccm->CCGR2); } else { - if (is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL)) { + if (is_mx6sx() || is_mx6ul()) { mask = MXC_CCM_CCGR6_I2C4_MASK; addr = &imx_ccm->CCGR6; } else { @@ -279,7 +279,7 @@ static u32 mxc_get_pll_pfd(enum pll_clocks pll, int pfd_num) switch (pll) { case PLL_BUS: - if (!is_cpu_type(MXC_CPU_MX6UL)) { + if (!is_mx6ul()) { if (pfd_num == 3) { /* No PFD3 on PPL2 */ return 0; @@ -379,8 +379,8 @@ static u32 get_ipg_per_clk(void) u32 reg, perclk_podf; reg = __raw_readl(&imx_ccm->cscmr1); - if (is_cpu_type(MXC_CPU_MX6SL) || is_cpu_type(MXC_CPU_MX6SX) || - is_mx6dqp() || is_cpu_type(MXC_CPU_MX6UL)) { + if (is_mx6sl() || is_mx6sx() || + is_mx6dqp() || is_mx6ul()) { if (reg & MXC_CCM_CSCMR1_PER_CLK_SEL_MASK) return MXC_HCLK; /* OSC 24Mhz */ } @@ -396,8 +396,7 @@ static u32 get_uart_clk(void) u32 freq = decode_pll(PLL_USBOTG, MXC_HCLK) / 6; /* static divider */ reg = __raw_readl(&imx_ccm->cscdr1); - if (is_cpu_type(MXC_CPU_MX6SL) || is_cpu_type(MXC_CPU_MX6SX) || - is_mx6dqp() || is_cpu_type(MXC_CPU_MX6UL)) { + if (is_mx6sl() || is_mx6sx() || is_mx6dqp() || is_mx6ul()) { if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL) freq = MXC_HCLK; } @@ -416,8 +415,7 @@ static u32 get_cspi_clk(void) cspi_podf = (reg & MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK) >> MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET; - if (is_mx6dqp() || is_cpu_type(MXC_CPU_MX6SL) || - is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL)) { + if (is_mx6dqp() || is_mx6sl() || is_mx6sx() || is_mx6ul()) { if (reg & MXC_CCM_CSCDR2_ECSPI_CLK_SEL_MASK) return MXC_HCLK / (cspi_podf + 1); } @@ -479,14 +477,13 @@ static u32 get_mmdc_ch0_clk(void) u32 freq, podf, per2_clk2_podf, pmu_misc2_audio_div; - if (is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL) || - is_cpu_type(MXC_CPU_MX6SL)) { + if (is_mx6sx() || is_mx6ul() || is_mx6sl()) { podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH1_PODF_MASK) >> MXC_CCM_CBCDR_MMDC_CH1_PODF_OFFSET; if (cbcdr & MXC_CCM_CBCDR_PERIPH2_CLK_SEL) { per2_clk2_podf = (cbcdr & MXC_CCM_CBCDR_PERIPH2_CLK2_PODF_MASK) >> MXC_CCM_CBCDR_PERIPH2_CLK2_PODF_OFFSET; - if (is_cpu_type(MXC_CPU_MX6SL)) { + if (is_mx6sl()) { if (cbcmr & MXC_CCM_CBCMR_PERIPH2_CLK2_SEL) freq = MXC_HCLK; else @@ -618,7 +615,7 @@ void mxs_set_lcdclk(u32 base_addr, u32 freq) debug("mxs_set_lcdclk, freq = %dKHz\n", freq); - if ((!is_cpu_type(MXC_CPU_MX6SX)) && !is_cpu_type(MXC_CPU_MX6UL)) { + if (!is_mx6sx() && !is_mx6ul()) { debug("This chip not support lcd!\n"); return; } @@ -630,7 +627,7 @@ void mxs_set_lcdclk(u32 base_addr, u32 freq) return; } - if (is_cpu_type(MXC_CPU_MX6SX)) { + if (is_mx6sx()) { reg = readl(&imx_ccm->cscdr2); /* Can't change clocks when clock not from pre-mux */ if ((reg & MXC_CCM_CSCDR2_LCDIF2_CLK_SEL_MASK) != 0) @@ -711,7 +708,7 @@ void mxs_set_lcdclk(u32 base_addr, u32 freq) MXC_CCM_CBCMR_LCDIF1_PODF_MASK, ((postd - 1) << MXC_CCM_CBCMR_LCDIF1_PODF_OFFSET)); - } else if (is_cpu_type(MXC_CPU_MX6SX)) { + } else if (is_mx6sx()) { /* Setting LCDIF2 for i.MX6SX */ if (enable_pll_video(pll_div, pll_num, pll_denom, post_div)) return; @@ -737,7 +734,7 @@ int enable_lcdif_clock(u32 base_addr) u32 reg = 0; u32 lcdif_clk_sel_mask, lcdif_ccgr3_mask; - if (is_cpu_type(MXC_CPU_MX6SX)) { + if (is_mx6sx()) { if ((base_addr != LCDIF1_BASE_ADDR) && (base_addr != LCDIF2_BASE_ADDR)) { puts("Wrong LCD interface!\n"); @@ -752,7 +749,7 @@ int enable_lcdif_clock(u32 base_addr) MXC_CCM_CCGR3_DISP_AXI_MASK) : (MXC_CCM_CCGR3_LCDIF1_PIX_MASK | MXC_CCM_CCGR3_DISP_AXI_MASK); - } else if (is_cpu_type(MXC_CPU_MX6UL)) { + } else if (is_mx6ul()) { if (base_addr != LCDIF1_BASE_ADDR) { puts("Wrong LCD interface!\n"); return -EINVAL; @@ -850,8 +847,7 @@ int enable_fec_anatop_clock(int fec_id, enum enet_freq freq) reg |= BF_ANADIG_PLL_ENET_DIV_SELECT(freq); } else if (fec_id == 1) { /* Only i.MX6SX/UL support ENET2 */ - if (!(is_cpu_type(MXC_CPU_MX6SX) || - is_cpu_type(MXC_CPU_MX6UL))) + if (!(is_mx6sx() || is_mx6ul())) return -EINVAL; reg &= ~BM_ANADIG_PLL_ENET2_DIV_SELECT; reg |= BF_ANADIG_PLL_ENET2_DIV_SELECT(freq); @@ -1044,7 +1040,7 @@ int enable_pcie_clock(void) #define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_PCIE_REF 0xa #define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_SATA_REF 0xb - if (is_cpu_type(MXC_CPU_MX6SX)) + if (is_mx6sx()) lvds1_clk_sel = ANADIG_ANA_MISC1_LVDS1_CLK_SEL_PCIE_REF; else lvds1_clk_sel = ANADIG_ANA_MISC1_LVDS1_CLK_SEL_SATA_REF; @@ -1228,7 +1224,7 @@ static void disable_ldb_di_clock_sources(void) /* Make sure PFDs are disabled at boot. */ reg = readl(&mxc_ccm->analog_pfd_528); /* Cannot disable pll2_pfd2_396M, as it is the MMDC clock in iMX6DL */ - if (is_cpu_type(MXC_CPU_MX6DL)) + if (is_mx6sdl()) reg |= 0x80008080; else reg |= 0x80808080; @@ -1251,7 +1247,7 @@ static void enable_ldb_di_clock_sources(void) int reg; reg = readl(&mxc_ccm->analog_pfd_528); - if (is_cpu_type(MXC_CPU_MX6DL)) + if (is_mx6sdl()) reg &= ~(0x80008080); else reg &= ~(0x80808080); diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c index 1e7ae28933..f151eec545 100644 --- a/arch/arm/cpu/armv7/mx6/ddr.c +++ b/arch/arm/cpu/armv7/mx6/ddr.c @@ -888,8 +888,7 @@ void mx6sdl_dram_iocfg(unsigned width, #define MR(val, ba, cmd, cs1) \ ((val << 16) | (1 << 15) | (cmd << 4) | (cs1 << 3) | ba) #define MMDC1(entry, value) do { \ - if (!is_cpu_type(MXC_CPU_MX6SX) && !is_cpu_type(MXC_CPU_MX6UL) && \ - !is_cpu_type(MXC_CPU_MX6SL)) \ + if (!is_mx6sx() && !is_mx6ul() && !is_mx6sl()) \ mmdc1->entry = value; \ } while (0) @@ -1197,12 +1196,11 @@ void mx6_ddr3_cfg(const struct mx6_ddr_sysinfo *sysinfo, u16 mem_speed = ddr3_cfg->mem_speed; mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR; - if (!is_cpu_type(MXC_CPU_MX6SX) && !is_cpu_type(MXC_CPU_MX6UL) && - !is_cpu_type(MXC_CPU_MX6SL)) + if (!is_mx6sx() && !is_mx6ul() && !is_mx6sl()) mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR; /* Limit mem_speed for MX6D/MX6Q */ - if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) { + if (is_mx6dq() || is_mx6dqp()) { if (mem_speed > 1066) mem_speed = 1066; /* 1066 MT/s */ @@ -1221,7 +1219,7 @@ void mx6_ddr3_cfg(const struct mx6_ddr_sysinfo *sysinfo, * Data rate of 1066 MT/s requires 533 MHz DDR3 clock, but MX6D/Q supports * up to 528 MHz, so reduce the clock to fit chip specs */ - if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) { + if (is_mx6dq() || is_mx6dqp()) { if (clock > 528) clock = 528; /* 528 MHz */ } diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index d4b22ad7f3..88fcfdc2aa 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -108,6 +108,12 @@ u32 get_cpu_rev(void) #define OCOTP_CFG3_SPEED_1GHZ 2 #define OCOTP_CFG3_SPEED_1P2GHZ 3 +/* + * For i.MX6UL + */ +#define OCOTP_CFG3_SPEED_528MHZ 1 +#define OCOTP_CFG3_SPEED_696MHZ 2 + u32 get_cpu_speed_grade_hz(void) { struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR; @@ -120,17 +126,26 @@ u32 get_cpu_speed_grade_hz(void) val >>= OCOTP_CFG3_SPEED_SHIFT; val &= 0x3; + if (is_mx6ul()) { + if (val == OCOTP_CFG3_SPEED_528MHZ) + return 528000000; + else if (val == OCOTP_CFG3_SPEED_696MHZ) + return 69600000; + else + return 0; + } + switch (val) { /* Valid for IMX6DQ */ case OCOTP_CFG3_SPEED_1P2GHZ: - if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) + if (is_mx6dq() || is_mx6dqp()) return 1200000000; /* Valid for IMX6SX/IMX6SDL/IMX6DQ */ case OCOTP_CFG3_SPEED_1GHZ: return 996000000; /* Valid for IMX6DQ */ case OCOTP_CFG3_SPEED_850MHZ: - if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) + if (is_mx6dq() || is_mx6dqp()) return 852000000; /* Valid for IMX6SX/IMX6SDL/IMX6DQ */ case OCOTP_CFG3_SPEED_800MHZ: @@ -278,7 +293,7 @@ static void clear_mmdc_ch_mask(void) reg = readl(&mxc_ccm->ccdr); /* Clear MMDC channel mask */ - if (is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL) || is_cpu_type(MXC_CPU_MX6SL)) + if (is_mx6sx() || is_mx6ul() || is_mx6sl()) reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK); else reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK | MXC_CCM_CCDR_MMDC_CH0_HS_MASK); @@ -444,8 +459,7 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac) struct fuse_bank4_regs *fuse = (struct fuse_bank4_regs *)bank->fuse_regs; - if ((is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL)) && - dev_id == 1) { + if ((is_mx6sx() || is_mx6ul()) && dev_id == 1) { u32 value = readl(&fuse->mac_addr2); mac[0] = value >> 24 ; mac[1] = value >> 16 ; @@ -509,7 +523,7 @@ void s_init(void) u32 mask528; u32 reg, periph1, periph2; - if (is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL)) + if (is_mx6sx() || is_mx6ul()) return; /* Due to hardware limitation, on MX6Q we need to gate/ungate all PFDs diff --git a/arch/arm/cpu/armv7/mx7/soc.c b/arch/arm/cpu/armv7/mx7/soc.c index 073bbc6d01..ef46c92b09 100644 --- a/arch/arm/cpu/armv7/mx7/soc.c +++ b/arch/arm/cpu/armv7/mx7/soc.c @@ -441,3 +441,11 @@ void s_init(void) return; } + +void reset_misc(void) +{ +#ifdef CONFIG_VIDEO_MXS + lcdif_power_down(); +#endif +} + diff --git a/arch/arm/cpu/armv7/omap5/Kconfig b/arch/arm/cpu/armv7/omap5/Kconfig index 026bf24ddc..4fb5ef95cb 100644 --- a/arch/arm/cpu/armv7/omap5/Kconfig +++ b/arch/arm/cpu/armv7/omap5/Kconfig @@ -14,8 +14,8 @@ config TARGET_DRA7XX_EVM bool "TI DRA7XX" select TI_I2C_BOARD_DETECT -config TARGET_BEAGLE_X15 - bool "BeagleBoard X15" +config TARGET_AM57XX_EVM + bool "AM57XX" select TI_I2C_BOARD_DETECT endchoice diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c index 5b91446a8d..62dd275f7e 100644 --- a/arch/arm/cpu/armv7/omap5/hw_data.c +++ b/arch/arm/cpu/armv7/omap5/hw_data.c @@ -364,82 +364,6 @@ struct vcores_data omap5430_volts_es2 = { .mm.abb_tx_done_mask = OMAP_ABB_MM_TXDONE_MASK, }; -struct vcores_data dra752_volts = { - .mpu.value = VDD_MPU_DRA7, - .mpu.efuse.reg = STD_FUSE_OPP_VMIN_MPU, - .mpu.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .mpu.addr = TPS659038_REG_ADDR_SMPS12, - .mpu.pmic = &tps659038, - .mpu.abb_tx_done_mask = OMAP_ABB_MPU_TXDONE_MASK, - - .eve.value = VDD_EVE_DRA7, - .eve.efuse.reg = STD_FUSE_OPP_VMIN_DSPEVE, - .eve.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .eve.addr = TPS659038_REG_ADDR_SMPS45, - .eve.pmic = &tps659038, - .eve.abb_tx_done_mask = OMAP_ABB_EVE_TXDONE_MASK, - - .gpu.value = VDD_GPU_DRA7, - .gpu.efuse.reg = STD_FUSE_OPP_VMIN_GPU, - .gpu.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .gpu.addr = TPS659038_REG_ADDR_SMPS6, - .gpu.pmic = &tps659038, - .gpu.abb_tx_done_mask = OMAP_ABB_GPU_TXDONE_MASK, - - .core.value = VDD_CORE_DRA7, - .core.efuse.reg = STD_FUSE_OPP_VMIN_CORE, - .core.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .core.addr = TPS659038_REG_ADDR_SMPS7, - .core.pmic = &tps659038, - - .iva.value = VDD_IVA_DRA7, - .iva.efuse.reg = STD_FUSE_OPP_VMIN_IVA, - .iva.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .iva.addr = TPS659038_REG_ADDR_SMPS8, - .iva.pmic = &tps659038, - .iva.abb_tx_done_mask = OMAP_ABB_IVA_TXDONE_MASK, -}; - -struct vcores_data dra722_volts = { - .mpu.value = VDD_MPU_DRA7, - .mpu.efuse.reg = STD_FUSE_OPP_VMIN_MPU, - .mpu.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .mpu.addr = TPS65917_REG_ADDR_SMPS1, - .mpu.pmic = &tps659038, - .mpu.abb_tx_done_mask = OMAP_ABB_MPU_TXDONE_MASK, - - .core.value = VDD_CORE_DRA7, - .core.efuse.reg = STD_FUSE_OPP_VMIN_CORE, - .core.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .core.addr = TPS65917_REG_ADDR_SMPS2, - .core.pmic = &tps659038, - - /* - * The DSPEVE, GPU and IVA rails are usually grouped on DRA72x - * designs and powered by TPS65917 SMPS3, as on the J6Eco EVM. - */ - .gpu.value = VDD_GPU_DRA7, - .gpu.efuse.reg = STD_FUSE_OPP_VMIN_GPU, - .gpu.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .gpu.addr = TPS65917_REG_ADDR_SMPS3, - .gpu.pmic = &tps659038, - .gpu.abb_tx_done_mask = OMAP_ABB_GPU_TXDONE_MASK, - - .eve.value = VDD_EVE_DRA7, - .eve.efuse.reg = STD_FUSE_OPP_VMIN_DSPEVE, - .eve.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .eve.addr = TPS65917_REG_ADDR_SMPS3, - .eve.pmic = &tps659038, - .eve.abb_tx_done_mask = OMAP_ABB_EVE_TXDONE_MASK, - - .iva.value = VDD_IVA_DRA7, - .iva.efuse.reg = STD_FUSE_OPP_VMIN_IVA, - .iva.efuse.reg_bits = DRA752_EFUSE_REGBITS, - .iva.addr = TPS65917_REG_ADDR_SMPS3, - .iva.pmic = &tps659038, - .iva.abb_tx_done_mask = OMAP_ABB_IVA_TXDONE_MASK, -}; - /* * Enable essential clock domains, modules and * do some additional special settings needed @@ -802,7 +726,6 @@ void __weak hw_data_init(void) case DRA752_ES2_0: *prcm = &dra7xx_prcm; *dplls_data = &dra7xx_dplls; - *omap_vcores = &dra752_volts; *ctrl = &dra7xx_ctrl; break; @@ -810,7 +733,6 @@ void __weak hw_data_init(void) case DRA722_ES2_0: *prcm = &dra7xx_prcm; *dplls_data = &dra72x_dplls; - *omap_vcores = &dra722_volts; *ctrl = &dra7xx_ctrl; break; diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index b18094447b..691e5d3fe1 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -66,8 +66,10 @@ save_boot_params_ret: /* the mask ROM code should have PLL and others stable */ #ifndef CONFIG_SKIP_LOWLEVEL_INIT bl cpu_init_cp15 +#ifndef CONFIG_SKIP_LOWLEVEL_INIT_ONLY bl cpu_init_crit #endif +#endif bl _main @@ -250,7 +252,8 @@ skip_errata_621766: mov pc, r5 @ back to my caller ENDPROC(cpu_init_cp15) -#ifndef CONFIG_SKIP_LOWLEVEL_INIT +#if !defined(CONFIG_SKIP_LOWLEVEL_INIT) && \ + !defined(CONFIG_SKIP_LOWLEVEL_INIT_ONLY) /************************************************************************* * * CPU_init_critical registers diff --git a/arch/arm/cpu/armv8/Makefile b/arch/arm/cpu/armv8/Makefile index 1c85aa924d..bf8644ccd2 100644 --- a/arch/arm/cpu/armv8/Makefile +++ b/arch/arm/cpu/armv8/Makefile @@ -17,5 +17,6 @@ obj-y += transition.o obj-y += fwcall.o obj-$(CONFIG_FSL_LAYERSCAPE) += fsl-layerscape/ +obj-$(CONFIG_S32V234) += s32v234/ obj-$(CONFIG_ARCH_ZYNQMP) += zynqmp/ obj-$(CONFIG_TARGET_HIKEY) += hisilicon/ diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c index 9c575c14d7..8062106e3e 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c @@ -643,6 +643,9 @@ int timer_init(void) #ifdef CONFIG_FSL_LSCH3 u32 __iomem *cltbenr = (u32 *)CONFIG_SYS_FSL_PMU_CLTBENR; #endif +#ifdef CONFIG_LS2080A + u32 __iomem *pctbenr = (u32 *)FSL_PMU_PCTBENR_OFFSET; +#endif #ifdef COUNTER_FREQUENCY_REAL unsigned long cntfrq = COUNTER_FREQUENCY_REAL; @@ -657,6 +660,15 @@ int timer_init(void) out_le32(cltbenr, 0xf); #endif +#ifdef CONFIG_LS2080A + /* + * In certain Layerscape SoCs, the clock for each core's + * has an enable bit in the PMU Physical Core Time Base Enable + * Register (PCTBENR), which allows the watchdog to operate. + */ + setbits_le32(pctbenr, 0xff); +#endif + /* Enable clock for timer * This is a global setting. */ diff --git a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch3 b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch3 index f9323c1d28..da5e052569 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch3 +++ b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch3 @@ -121,6 +121,35 @@ mcboottimeout: MC boot timeout in milliseconds. If this variable is not defined mcmemsize: MC DRAM block size. If this variable is not defined, the value CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE will be assumed. +mcinitcmd: This environment variable is defined to initiate MC and DPL deployment + from the location where it is stored(NOR, NAND, SD, SATA, USB)during + u-boot booting.If this variable is not defined then MC_BOOT_ENV_VAR + will be null and MC will not be booted and DPL will not be applied + during U-boot booting.However the MC, DPC and DPL can be applied from + console independently. + The variable needs to be set from the console once and then on + rebooting the parameters set in the varible will automatically be + executed. The commmand is demostrated taking an example of mc boot + using NOR Flash i.e. MC, DPL, and DPC is stored in the NOR flash: + + cp.b 0xa0000000 0x580300000 $filesize + cp.b 0x80000000 0x580800000 $filesize + cp.b 0x90000000 0x580700000 $filesize + + setenv mcinitcmd 'fsl_mc start mc 0x580300000 0x580800000' + + If only linux is to be booted then the mcinitcmd environment should be set as + + setenv mcinitcmd 'fsl_mc start mc 0x580300000 0x580800000;fsl_mc apply DPL 0x580700000' + + Here the addresses 0xa0000000, 0x80000000, 0x80000000 are of DDR to where + MC binary, DPC binary and DPL binary are stored and 0x580300000, 0x580800000 + and 0x580700000 are addresses in NOR where these are copied. It is to be + noted that these addresses in 'fsl_mc start mc 0x580300000 0x580800000;fsl_mc apply DPL 0x580700000' + can be replaced with the addresses of DDR to + which these will be copied in case of these binaries being stored in other + devices like SATA, USB, NAND, SD etc. + Booting from NAND ------------------- Booting from NAND requires two images, RCW and u-boot-with-spl.bin. diff --git a/arch/arm/cpu/armv8/s32v234/Makefile b/arch/arm/cpu/armv8/s32v234/Makefile new file mode 100644 index 0000000000..49774f6170 --- /dev/null +++ b/arch/arm/cpu/armv8/s32v234/Makefile @@ -0,0 +1,8 @@ +# +# (C) Copyright 2013-2016, Freescale Semiconductor, Inc. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += generic.o +obj-y += cpu.o diff --git a/arch/arm/cpu/armv8/s32v234/cpu.c b/arch/arm/cpu/armv8/s32v234/cpu.c new file mode 100644 index 0000000000..dac12a2552 --- /dev/null +++ b/arch/arm/cpu/armv8/s32v234/cpu.c @@ -0,0 +1,97 @@ +/* + * (C) Copyright 2014-2016, Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/armv8/mmu.h> +#include <asm/io.h> +#include <asm/arch/mc_me_regs.h> +#include "cpu.h" + +DECLARE_GLOBAL_DATA_PTR; + +u32 cpu_mask(void) +{ + return readl(MC_ME_CS); +} + +#ifndef CONFIG_SYS_DCACHE_OFF + +#define S32V234_IRAM_BASE 0x3e800000UL +#define S32V234_IRAM_SIZE 0x800000UL +#define S32V234_DRAM_BASE1 0x80000000UL +#define S32V234_DRAM_SIZE1 0x40000000UL +#define S32V234_DRAM_BASE2 0xC0000000UL +#define S32V234_DRAM_SIZE2 0x20000000UL +#define S32V234_PERIPH_BASE 0x40000000UL +#define S32V234_PERIPH_SIZE 0x40000000UL + +static struct mm_region s32v234_mem_map[] = { + { + .base = S32V234_IRAM_BASE, + .size = S32V234_IRAM_SIZE, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_OUTER_SHARE + }, { + .base = S32V234_DRAM_BASE1, + .size = S32V234_DRAM_SIZE1, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_OUTER_SHARE + }, { + .base = S32V234_PERIPH_BASE, + .size = S32V234_PERIPH_SIZE, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE + /* TODO: Do we need these? */ + /* | PTE_BLOCK_PXN | PTE_BLOCK_UXN */ + }, { + .base = S32V234_DRAM_BASE2, + .size = S32V234_DRAM_SIZE2, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) | + PTE_BLOCK_OUTER_SHARE + }, { + /* List terminator */ + 0, + } +}; + +struct mm_region *mem_map = s32v234_mem_map; + +#endif + +/* + * Return the number of cores on this SOC. + */ +int cpu_numcores(void) +{ + int numcores; + u32 mask; + + mask = cpu_mask(); + numcores = hweight32(cpu_mask()); + + /* Verify if M4 is deactivated */ + if (mask & 0x1) + numcores--; + + return numcores; +} + +#if defined(CONFIG_ARCH_EARLY_INIT_R) +int arch_early_init_r(void) +{ + int rv; + asm volatile ("dsb sy"); + rv = fsl_s32v234_wake_seconday_cores(); + + if (rv) + printf("Did not wake secondary cores\n"); + + asm volatile ("sev"); + return 0; +} +#endif /* CONFIG_ARCH_EARLY_INIT_R */ diff --git a/arch/arm/cpu/armv8/s32v234/cpu.h b/arch/arm/cpu/armv8/s32v234/cpu.h new file mode 100644 index 0000000000..402ac2956c --- /dev/null +++ b/arch/arm/cpu/armv8/s32v234/cpu.h @@ -0,0 +1,8 @@ +/* + * (C) Copyright 2014-2016, Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +u32 cpu_mask(void); +int cpu_numcores(void); diff --git a/arch/arm/cpu/armv8/s32v234/generic.c b/arch/arm/cpu/armv8/s32v234/generic.c new file mode 100644 index 0000000000..7bb894ecb7 --- /dev/null +++ b/arch/arm/cpu/armv8/s32v234/generic.c @@ -0,0 +1,350 @@ +/* + * (C) Copyright 2013-2016, Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/clock.h> +#include <asm/arch/mc_cgm_regs.h> +#include <asm/arch/mc_me_regs.h> +#include <asm/arch/mc_rgm_regs.h> +#include <netdev.h> +#include <div64.h> +#include <errno.h> + +u32 get_cpu_rev(void) +{ + struct mscm_ir *mscmir = (struct mscm_ir *)MSCM_BASE_ADDR; + u32 cpu = readl(&mscmir->cpxtype); + + return cpu; +} + +DECLARE_GLOBAL_DATA_PTR; + +static uintptr_t get_pllfreq(u32 pll, u32 refclk_freq, u32 plldv, + u32 pllfd, u32 selected_output) +{ + u32 vco = 0, plldv_prediv = 0, plldv_mfd = 0, pllfd_mfn = 0; + u32 plldv_rfdphi_div = 0, fout = 0; + u32 dfs_portn = 0, dfs_mfn = 0, dfs_mfi = 0; + + if (selected_output > DFS_MAXNUMBER) { + return -1; + } + + plldv_prediv = + (plldv & PLLDIG_PLLDV_PREDIV_MASK) >> PLLDIG_PLLDV_PREDIV_OFFSET; + plldv_mfd = (plldv & PLLDIG_PLLDV_MFD_MASK); + + pllfd_mfn = (pllfd & PLLDIG_PLLFD_MFN_MASK); + + plldv_prediv = plldv_prediv == 0 ? 1 : plldv_prediv; + + /* The formula for VCO is from TR manual, rev. D */ + vco = refclk_freq / plldv_prediv * (plldv_mfd + pllfd_mfn / 20481); + + if (selected_output != 0) { + /* Determine the RFDPHI for PHI1 */ + plldv_rfdphi_div = + (plldv & PLLDIG_PLLDV_RFDPHI1_MASK) >> + PLLDIG_PLLDV_RFDPHI1_OFFSET; + plldv_rfdphi_div = plldv_rfdphi_div == 0 ? 1 : plldv_rfdphi_div; + if (pll == ARM_PLL || pll == ENET_PLL || pll == DDR_PLL) { + dfs_portn = + readl(DFS_DVPORTn(pll, selected_output - 1)); + dfs_mfi = + (dfs_portn & DFS_DVPORTn_MFI_MASK) >> + DFS_DVPORTn_MFI_OFFSET; + dfs_mfn = + (dfs_portn & DFS_DVPORTn_MFI_MASK) >> + DFS_DVPORTn_MFI_OFFSET; + fout = vco / (dfs_mfi + (dfs_mfn / 256)); + } else { + fout = vco / plldv_rfdphi_div; + } + + } else { + /* Determine the RFDPHI for PHI0 */ + plldv_rfdphi_div = + (plldv & PLLDIG_PLLDV_RFDPHI_MASK) >> + PLLDIG_PLLDV_RFDPHI_OFFSET; + fout = vco / plldv_rfdphi_div; + } + + return fout; + +} + +/* Implemented for ARMPLL, PERIPH_PLL, ENET_PLL, DDR_PLL, VIDEO_LL */ +static uintptr_t decode_pll(enum pll_type pll, u32 refclk_freq, + u32 selected_output) +{ + u32 plldv, pllfd; + + plldv = readl(PLLDIG_PLLDV(pll)); + pllfd = readl(PLLDIG_PLLFD(pll)); + + return get_pllfreq(pll, refclk_freq, plldv, pllfd, selected_output); +} + +static u32 get_mcu_main_clk(void) +{ + u32 coreclk_div; + u32 sysclk_sel; + u32 freq = 0; + + sysclk_sel = readl(CGM_SC_SS(MC_CGM1_BASE_ADDR)) & MC_CGM_SC_SEL_MASK; + sysclk_sel >>= MC_CGM_SC_SEL_OFFSET; + + coreclk_div = + readl(CGM_SC_DCn(MC_CGM1_BASE_ADDR, 0)) & MC_CGM_SC_DCn_PREDIV_MASK; + coreclk_div >>= MC_CGM_SC_DCn_PREDIV_OFFSET; + coreclk_div += 1; + + switch (sysclk_sel) { + case MC_CGM_SC_SEL_FIRC: + freq = FIRC_CLK_FREQ; + break; + case MC_CGM_SC_SEL_XOSC: + freq = XOSC_CLK_FREQ; + break; + case MC_CGM_SC_SEL_ARMPLL: + /* ARMPLL has as source XOSC and CORE_CLK has as input PHI0 */ + freq = decode_pll(ARM_PLL, XOSC_CLK_FREQ, 0); + break; + case MC_CGM_SC_SEL_CLKDISABLE: + printf("Sysclk is disabled\n"); + break; + default: + printf("unsupported system clock select\n"); + } + + return freq / coreclk_div; +} + +static u32 get_sys_clk(u32 number) +{ + u32 sysclk_div, sysclk_div_number; + u32 sysclk_sel; + u32 freq = 0; + + switch (number) { + case 3: + sysclk_div_number = 0; + break; + case 6: + sysclk_div_number = 1; + break; + default: + printf("unsupported system clock \n"); + return -1; + } + sysclk_sel = readl(CGM_SC_SS(MC_CGM0_BASE_ADDR)) & MC_CGM_SC_SEL_MASK; + sysclk_sel >>= MC_CGM_SC_SEL_OFFSET; + + sysclk_div = + readl(CGM_SC_DCn(MC_CGM1_BASE_ADDR, sysclk_div_number)) & + MC_CGM_SC_DCn_PREDIV_MASK; + sysclk_div >>= MC_CGM_SC_DCn_PREDIV_OFFSET; + sysclk_div += 1; + + switch (sysclk_sel) { + case MC_CGM_SC_SEL_FIRC: + freq = FIRC_CLK_FREQ; + break; + case MC_CGM_SC_SEL_XOSC: + freq = XOSC_CLK_FREQ; + break; + case MC_CGM_SC_SEL_ARMPLL: + /* ARMPLL has as source XOSC and SYSn_CLK has as input DFS1 */ + freq = decode_pll(ARM_PLL, XOSC_CLK_FREQ, 1); + break; + case MC_CGM_SC_SEL_CLKDISABLE: + printf("Sysclk is disabled\n"); + break; + default: + printf("unsupported system clock select\n"); + } + + return freq / sysclk_div; +} + +static u32 get_peripherals_clk(void) +{ + u32 aux5clk_div; + u32 freq = 0; + + aux5clk_div = + readl(CGM_ACn_DCm(MC_CGM0_BASE_ADDR, 5, 0)) & + MC_CGM_ACn_DCm_PREDIV_MASK; + aux5clk_div >>= MC_CGM_ACn_DCm_PREDIV_OFFSET; + aux5clk_div += 1; + + freq = decode_pll(PERIPH_PLL, XOSC_CLK_FREQ, 0); + + return freq / aux5clk_div; + +} + +static u32 get_uart_clk(void) +{ + u32 auxclk3_div, auxclk3_sel, freq = 0; + + auxclk3_sel = + readl(CGM_ACn_SS(MC_CGM0_BASE_ADDR, 3)) & MC_CGM_ACn_SEL_MASK; + auxclk3_sel >>= MC_CGM_ACn_SEL_OFFSET; + + auxclk3_div = + readl(CGM_ACn_DCm(MC_CGM0_BASE_ADDR, 3, 0)) & + MC_CGM_ACn_DCm_PREDIV_MASK; + auxclk3_div >>= MC_CGM_ACn_DCm_PREDIV_OFFSET; + auxclk3_div += 1; + + switch (auxclk3_sel) { + case MC_CGM_ACn_SEL_FIRC: + freq = FIRC_CLK_FREQ; + break; + case MC_CGM_ACn_SEL_XOSC: + freq = XOSC_CLK_FREQ; + break; + case MC_CGM_ACn_SEL_PERPLLDIVX: + freq = get_peripherals_clk() / 3; + break; + case MC_CGM_ACn_SEL_SYSCLK: + freq = get_sys_clk(6); + break; + default: + printf("unsupported system clock select\n"); + } + + return freq / auxclk3_div; +} + +static u32 get_fec_clk(void) +{ + u32 aux2clk_div; + u32 freq = 0; + + aux2clk_div = + readl(CGM_ACn_DCm(MC_CGM0_BASE_ADDR, 2, 0)) & + MC_CGM_ACn_DCm_PREDIV_MASK; + aux2clk_div >>= MC_CGM_ACn_DCm_PREDIV_OFFSET; + aux2clk_div += 1; + + freq = decode_pll(ENET_PLL, XOSC_CLK_FREQ, 0); + + return freq / aux2clk_div; +} + +static u32 get_usdhc_clk(void) +{ + u32 aux15clk_div; + u32 freq = 0; + + aux15clk_div = + readl(CGM_ACn_DCm(MC_CGM0_BASE_ADDR, 15, 0)) & + MC_CGM_ACn_DCm_PREDIV_MASK; + aux15clk_div >>= MC_CGM_ACn_DCm_PREDIV_OFFSET; + aux15clk_div += 1; + + freq = decode_pll(ENET_PLL, XOSC_CLK_FREQ, 4); + + return freq / aux15clk_div; +} + +static u32 get_i2c_clk(void) +{ + return get_peripherals_clk(); +} + +/* return clocks in Hz */ +unsigned int mxc_get_clock(enum mxc_clock clk) +{ + switch (clk) { + case MXC_ARM_CLK: + return get_mcu_main_clk(); + case MXC_PERIPHERALS_CLK: + return get_peripherals_clk(); + case MXC_UART_CLK: + return get_uart_clk(); + case MXC_FEC_CLK: + return get_fec_clk(); + case MXC_I2C_CLK: + return get_i2c_clk(); + case MXC_USDHC_CLK: + return get_usdhc_clk(); + default: + break; + } + printf("Error: Unsupported function to read the frequency! \ + Please define it correctly!"); + return -1; +} + +/* Not yet implemented - int soc_clk_dump(); */ + +#if defined(CONFIG_DISPLAY_CPUINFO) +static char *get_reset_cause(void) +{ + u32 cause = readl(MC_RGM_BASE_ADDR + 0x300); + + switch (cause) { + case F_SWT4: + return "WDOG"; + case F_JTAG: + return "JTAG"; + case F_FCCU_SOFT: + return "FCCU soft reaction"; + case F_FCCU_HARD: + return "FCCU hard reaction"; + case F_SOFT_FUNC: + return "Software Functional reset"; + case F_ST_DONE: + return "Self Test done reset"; + case F_EXT_RST: + return "External reset"; + default: + return "unknown reset"; + } + +} + +#define SRC_SCR_SW_RST (1<<12) + +void reset_cpu(ulong addr) +{ + printf("Feature not supported.\n"); +}; + +int print_cpuinfo(void) +{ + printf("CPU: Freescale Treerunner S32V234 at %d MHz\n", + mxc_get_clock(MXC_ARM_CLK) / 1000000); + printf("Reset cause: %s\n", get_reset_cause()); + + return 0; +} +#endif + +int cpu_eth_init(bd_t * bis) +{ + int rc = -ENODEV; + +#if defined(CONFIG_FEC_MXC) + rc = fecmxc_initialize(bis); +#endif + + return rc; +} + +int get_clocks(void) +{ +#ifdef CONFIG_FSL_ESDHC + gd->arch.sdhc_clk = mxc_get_clock(MXC_USDHC_CLK); +#endif + return 0; +} diff --git a/arch/arm/cpu/sa1100/start.S b/arch/arm/cpu/sa1100/start.S index 408b70dbc1..f5318c90d1 100644 --- a/arch/arm/cpu/sa1100/start.S +++ b/arch/arm/cpu/sa1100/start.S @@ -96,6 +96,7 @@ cpu_init_crit: ldr r1, cpuspeed str r1, [r0, #PPCR] +#ifndef CONFIG_SKIP_LOWLEVEL_INIT_ONLY /* * before relocating, we have to setup RAM timing * because memory timing is board-dependend, you will @@ -104,6 +105,7 @@ cpu_init_crit: mov ip, lr bl lowlevel_init mov lr, ip +#endif /* * disable MMU stuff and enable I-cache |
