From 3e93b4e6001104152fec850d4724ea9ffad03e05 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 20 Feb 2015 17:04:09 +0900 Subject: ARM: orion5x: move SoC sources to mach-orion5x Move arch/arm/cpu/arm926ejs/orion5x/* -> arch/arm/mach-orion5x/* Signed-off-by: Masahiro Yamada Cc: Albert ARIBAUD --- arch/arm/mach-orion5x/Kconfig | 16 ++ arch/arm/mach-orion5x/Makefile | 18 +++ arch/arm/mach-orion5x/cpu.c | 294 ++++++++++++++++++++++++++++++++++ arch/arm/mach-orion5x/dram.c | 55 +++++++ arch/arm/mach-orion5x/lowlevel_init.S | 277 ++++++++++++++++++++++++++++++++ arch/arm/mach-orion5x/timer.c | 171 ++++++++++++++++++++ 6 files changed, 831 insertions(+) create mode 100644 arch/arm/mach-orion5x/Kconfig create mode 100644 arch/arm/mach-orion5x/Makefile create mode 100644 arch/arm/mach-orion5x/cpu.c create mode 100644 arch/arm/mach-orion5x/dram.c create mode 100644 arch/arm/mach-orion5x/lowlevel_init.S create mode 100644 arch/arm/mach-orion5x/timer.c (limited to 'arch/arm/mach-orion5x') diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig new file mode 100644 index 0000000000..5a542629c7 --- /dev/null +++ b/arch/arm/mach-orion5x/Kconfig @@ -0,0 +1,16 @@ +if ORION5X + +choice + prompt "Marvell Orion board select" + +config TARGET_EDMINIV2 + bool "LaCie Ethernet Disk mini V2" + +endchoice + +config SYS_SOC + default "orion5x" + +source "board/LaCie/edminiv2/Kconfig" + +endif diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile new file mode 100644 index 0000000000..546ebcb52e --- /dev/null +++ b/arch/arm/mach-orion5x/Makefile @@ -0,0 +1,18 @@ +# +# Copyright (C) 2010 Albert ARIBAUD +# +# Based on original Kirkwood support which is +# (C) Copyright 2009 +# Marvell Semiconductor +# Written-by: Prafulla Wadaskar +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y = cpu.o +obj-y += dram.o +obj-y += timer.o + +ifndef CONFIG_SKIP_LOWLEVEL_INIT +obj-y += lowlevel_init.o +endif diff --git a/arch/arm/mach-orion5x/cpu.c b/arch/arm/mach-orion5x/cpu.c new file mode 100644 index 0000000000..f88db3b1f9 --- /dev/null +++ b/arch/arm/mach-orion5x/cpu.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) 2010 Albert ARIBAUD + * + * Based on original Kirkwood support which is + * (C) Copyright 2009 + * Marvell Semiconductor + * Written-by: Prafulla Wadaskar + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +#define BUFLEN 16 + +void reset_cpu(unsigned long ignored) +{ + struct orion5x_cpu_registers *cpureg = + (struct orion5x_cpu_registers *)ORION5X_CPU_REG_BASE; + + writel(readl(&cpureg->rstoutn_mask) | (1 << 2), + &cpureg->rstoutn_mask); + writel(readl(&cpureg->sys_soft_rst) | 1, + &cpureg->sys_soft_rst); + while (1) + ; +} + +/* + * Compute Window Size field value from size expressed in bytes + * Used with the Base register to set the address window size and location. + * Must be programmed from LSB to MSB as sequence of ones followed by + * sequence of zeros. The number of ones specifies the size of the window in + * 64 KiB granularity (e.g., a value of 0x00FF specifies 256 = 16 MiB). + * NOTES: + * 1) A sizeval equal to 0x0 specifies 4 GiB. + * 2) A return value of 0x0 specifies 64 KiB. + */ +unsigned int orion5x_winctrl_calcsize(unsigned int sizeval) +{ + /* + * Calculate the number of 64 KiB blocks needed minus one (rounding up). + * For sizeval > 0 this is equivalent to: + * sizeval = (u32) ceil((double) sizeval / 65536.0) - 1 + */ + sizeval = (sizeval - 1) >> 16; + + /* + * Propagate 'one' bits to the right by 'oring' them. + * We need only treat bits 15-0. + */ + sizeval |= sizeval >> 1; /* 'Or' bit 15 onto bit 14 */ + sizeval |= sizeval >> 2; /* 'Or' bits 15-14 onto bits 13-12 */ + sizeval |= sizeval >> 4; /* 'Or' bits 15-12 onto bits 11-8 */ + sizeval |= sizeval >> 8; /* 'Or' bits 15-8 onto bits 7-0*/ + + return sizeval; +} + +/* + * orion5x_config_adr_windows - Configure address Windows + * + * There are 8 address windows supported by Orion5x Soc to addess different + * devices. Each window can be configured for size, BAR and remap addr + * Below configuration is standard for most of the cases + * + * If remap function not used, remap_lo must be set as base + * + * NOTES: + * + * 1) in order to avoid windows with inconsistent control and base values + * (which could prevent access to BOOTCS and hence execution from FLASH) + * always disable window before writing the base value then reenable it + * by writing the control value. + * + * 2) in order to avoid losing access to BOOTCS when disabling window 7, + * first configure window 6 for BOOTCS, then configure window 7 for BOOTCS, + * then configure windows 6 for its own target. + * + * Reference Documentation: + * Mbus-L to Mbus Bridge Registers Configuration. + * (Sec 25.1 and 25.3 of Datasheet) + */ +int orion5x_config_adr_windows(void) +{ + struct orion5x_win_registers *winregs = + (struct orion5x_win_registers *)ORION5X_CPU_WIN_BASE; + +/* Disable window 0, configure it for its intended target, enable it. */ + writel(0, &winregs[0].ctrl); + writel(ORION5X_ADR_PCIE_MEM, &winregs[0].base); + writel(ORION5X_ADR_PCIE_MEM_REMAP_LO, &winregs[0].remap_lo); + writel(ORION5X_ADR_PCIE_MEM_REMAP_HI, &winregs[0].remap_hi); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCIE_MEM, + ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_MEM, + ORION5X_WIN_ENABLE), &winregs[0].ctrl); +/* Disable window 1, configure it for its intended target, enable it. */ + writel(0, &winregs[1].ctrl); + writel(ORION5X_ADR_PCIE_IO, &winregs[1].base); + writel(ORION5X_ADR_PCIE_IO_REMAP_LO, &winregs[1].remap_lo); + writel(ORION5X_ADR_PCIE_IO_REMAP_HI, &winregs[1].remap_hi); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCIE_IO, + ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_IO, + ORION5X_WIN_ENABLE), &winregs[1].ctrl); +/* Disable window 2, configure it for its intended target, enable it. */ + writel(0, &winregs[2].ctrl); + writel(ORION5X_ADR_PCI_MEM, &winregs[2].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCI_MEM, + ORION5X_TARGET_PCI, ORION5X_ATTR_PCI_MEM, + ORION5X_WIN_ENABLE), &winregs[2].ctrl); +/* Disable window 3, configure it for its intended target, enable it. */ + writel(0, &winregs[3].ctrl); + writel(ORION5X_ADR_PCI_IO, &winregs[3].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCI_IO, + ORION5X_TARGET_PCI, ORION5X_ATTR_PCI_IO, + ORION5X_WIN_ENABLE), &winregs[3].ctrl); +/* Disable window 4, configure it for its intended target, enable it. */ + writel(0, &winregs[4].ctrl); + writel(ORION5X_ADR_DEV_CS0, &winregs[4].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS0, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS0, + ORION5X_WIN_ENABLE), &winregs[4].ctrl); +/* Disable window 5, configure it for its intended target, enable it. */ + writel(0, &winregs[5].ctrl); + writel(ORION5X_ADR_DEV_CS1, &winregs[5].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS1, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS1, + ORION5X_WIN_ENABLE), &winregs[5].ctrl); +/* Disable window 6, configure it for FLASH, enable it. */ + writel(0, &winregs[6].ctrl); + writel(ORION5X_ADR_BOOTROM, &winregs[6].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_BOOTROM, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_BOOTROM, + ORION5X_WIN_ENABLE), &winregs[6].ctrl); +/* Disable window 7, configure it for FLASH, enable it. */ + writel(0, &winregs[7].ctrl); + writel(ORION5X_ADR_BOOTROM, &winregs[7].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_BOOTROM, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_BOOTROM, + ORION5X_WIN_ENABLE), &winregs[7].ctrl); +/* Disable window 6, configure it for its intended target, enable it. */ + writel(0, &winregs[6].ctrl); + writel(ORION5X_ADR_DEV_CS2, &winregs[6].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS2, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS2, + ORION5X_WIN_ENABLE), &winregs[6].ctrl); + + return 0; +} + +/* + * Orion5x identification is done through PCIE space. + */ + +u32 orion5x_device_id(void) +{ + return readl(PCIE_DEV_ID_OFF) >> 16; +} + +u32 orion5x_device_rev(void) +{ + return readl(PCIE_DEV_REV_OFF) & 0xff; +} + +#if defined(CONFIG_DISPLAY_CPUINFO) + +/* Display device and revision IDs. + * This function must cover all known device/revision + * combinations, not only the one for which u-boot is + * compiled; this way, one can identify actual HW in + * case of a mismatch. + */ +int print_cpuinfo(void) +{ + char dev_str[7]; /* room enough for 0x0000 plus null byte */ + char rev_str[5]; /* room enough for 0x00 plus null byte */ + char *dev_name = NULL; + char *rev_name = NULL; + + u32 dev = orion5x_device_id(); + u32 rev = orion5x_device_rev(); + + if (dev == MV88F5181_DEV_ID) { + dev_name = "MV88F5181"; + if (rev == MV88F5181_REV_B1) + rev_name = "B1"; + else if (rev == MV88F5181L_REV_A1) { + dev_name = "MV88F5181L"; + rev_name = "A1"; + } else if (rev == MV88F5181L_REV_A0) { + dev_name = "MV88F5181L"; + rev_name = "A0"; + } + } else if (dev == MV88F5182_DEV_ID) { + dev_name = "MV88F5182"; + if (rev == MV88F5182_REV_A2) + rev_name = "A2"; + } else if (dev == MV88F5281_DEV_ID) { + dev_name = "MV88F5281"; + if (rev == MV88F5281_REV_D2) + rev_name = "D2"; + else if (rev == MV88F5281_REV_D1) + rev_name = "D1"; + else if (rev == MV88F5281_REV_D0) + rev_name = "D0"; + } else if (dev == MV88F6183_DEV_ID) { + dev_name = "MV88F6183"; + if (rev == MV88F6183_REV_B0) + rev_name = "B0"; + } + if (dev_name == NULL) { + sprintf(dev_str, "0x%04x", dev); + dev_name = dev_str; + } + if (rev_name == NULL) { + sprintf(rev_str, "0x%02x", rev); + rev_name = rev_str; + } + + printf("SoC: Orion5x %s-%s\n", dev_name, rev_name); + + return 0; +} +#endif /* CONFIG_DISPLAY_CPUINFO */ + +#ifdef CONFIG_ARCH_CPU_INIT +int arch_cpu_init(void) +{ + /* Enable and invalidate L2 cache in write through mode */ + invalidate_l2_cache(); + + orion5x_config_adr_windows(); + + return 0; +} +#endif /* CONFIG_ARCH_CPU_INIT */ + +/* + * SOC specific misc init + */ +#if defined(CONFIG_ARCH_MISC_INIT) +int arch_misc_init(void) +{ + u32 temp; + + /*CPU streaming & write allocate */ + temp = readfr_extra_feature_reg(); + temp &= ~(1 << 28); /* disable wr alloc */ + writefr_extra_feature_reg(temp); + + temp = readfr_extra_feature_reg(); + temp &= ~(1 << 29); /* streaming disabled */ + writefr_extra_feature_reg(temp); + + /* L2Cache settings */ + temp = readfr_extra_feature_reg(); + /* Disable L2C pre fetch - Set bit 24 */ + temp |= (1 << 24); + /* enable L2C - Set bit 22 */ + temp |= (1 << 22); + writefr_extra_feature_reg(temp); + + icache_enable(); + /* Change reset vector to address 0x0 */ + temp = get_cr(); + set_cr(temp & ~CR_V); + + /* Set CPIOs and MPPs - values provided by board + include file */ + writel(ORION5X_MPP0_7, ORION5X_MPP_BASE+0x00); + writel(ORION5X_MPP8_15, ORION5X_MPP_BASE+0x04); + writel(ORION5X_MPP16_23, ORION5X_MPP_BASE+0x50); + writel(ORION5X_GPIO_OUT_VALUE, ORION5X_GPIO_BASE+0x00); + writel(ORION5X_GPIO_OUT_ENABLE, ORION5X_GPIO_BASE+0x04); + writel(ORION5X_GPIO_IN_POLARITY, ORION5X_GPIO_BASE+0x0c); + + /* initialize timer */ + timer_init_r(); + return 0; +} +#endif /* CONFIG_ARCH_MISC_INIT */ + +#ifdef CONFIG_MVGBE +int cpu_eth_init(bd_t *bis) +{ + mvgbe_initialize(bis); + return 0; +} +#endif diff --git a/arch/arm/mach-orion5x/dram.c b/arch/arm/mach-orion5x/dram.c new file mode 100644 index 0000000000..9ed93d25bc --- /dev/null +++ b/arch/arm/mach-orion5x/dram.c @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2010 Albert ARIBAUD + * + * Based on original Kirkwood support which is + * (C) Copyright 2009 + * Marvell Semiconductor + * Written-by: Prafulla Wadaskar + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* + * orion5x_sdram_bar - reads SDRAM Base Address Register + */ +u32 orion5x_sdram_bar(enum memory_bank bank) +{ + struct orion5x_ddr_addr_decode_registers *winregs = + (struct orion5x_ddr_addr_decode_registers *) + ORION5X_DRAM_BASE; + + u32 result = 0; + u32 enable = 0x01 & winregs[bank].size; + + if ((!enable) || (bank > BANK3)) + return 0; + + result = winregs[bank].base; + return result; +} +int dram_init (void) +{ + /* dram_init must store complete ramsize in gd->ram_size */ + gd->ram_size = get_ram_size( + (long *) orion5x_sdram_bar(0), + CONFIG_MAX_RAM_BANK_SIZE); + return 0; +} + +void dram_init_banksize (void) +{ + int i; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + gd->bd->bi_dram[i].start = orion5x_sdram_bar(i); + gd->bd->bi_dram[i].size = get_ram_size( + (long *) (gd->bd->bi_dram[i].start), + CONFIG_MAX_RAM_BANK_SIZE); + } +} diff --git a/arch/arm/mach-orion5x/lowlevel_init.S b/arch/arm/mach-orion5x/lowlevel_init.S new file mode 100644 index 0000000000..4dacc296e4 --- /dev/null +++ b/arch/arm/mach-orion5x/lowlevel_init.S @@ -0,0 +1,277 @@ +/* + * Copyright (C) 2010 Albert ARIBAUD + * + * (C) Copyright 2009 + * Marvell Semiconductor + * Written-by: Prafulla Wadaskar + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include "asm/arch/orion5x.h" + +/* + * Configuration values for SDRAM access setup + */ + +#define SDRAM_CONFIG 0x3148400 +#define SDRAM_MODE 0x62 +#define SDRAM_CONTROL 0x4041000 +#define SDRAM_TIME_CTRL_LOW 0x11602220 +#define SDRAM_TIME_CTRL_HI 0x40c +#define SDRAM_OPEN_PAGE_EN 0x0 +/* DDR 1 2x 32M NANYA NT5DS16M16CS-6K ==> 64MB */ +#define SDRAM_BANK0_SIZE 0x3ff0001 +#define SDRAM_ADDR_CTRL 0x10 + +#define SDRAM_OP_NOP 0x05 +#define SDRAM_OP_SETMODE 0x03 + +#define SDRAM_PAD_CTRL_WR_EN 0x80000000 +#define SDRAM_PAD_CTRL_TUNE_EN 0x00010000 +#define SDRAM_PAD_CTRL_DRVN_MASK 0x0000003f +#define SDRAM_PAD_CTRL_DRVP_MASK 0x00000fc0 + +/* + * For Guideline MEM-3 - Drive Strength value + */ + +#define DDR1_PAD_STRENGTH_DEFAULT 0x00001000 +#define SDRAM_PAD_CTRL_DRV_STR_MASK 0x00003000 + +/* + * For Guideline MEM-4 - DQS Reference Delay Tuning + */ + +#define MSAR_ARMDDRCLCK_MASK 0x000000f0 +#define MSAR_ARMDDRCLCK_H_MASK 0x00000100 + +#define MSAR_ARMDDRCLCK_333_167 0x00000000 +#define MSAR_ARMDDRCLCK_500_167 0x00000030 +#define MSAR_ARMDDRCLCK_667_167 0x00000060 +#define MSAR_ARMDDRCLCK_400_200_1 0x000001E0 +#define MSAR_ARMDDRCLCK_400_200 0x00000010 +#define MSAR_ARMDDRCLCK_600_200 0x00000050 +#define MSAR_ARMDDRCLCK_800_200 0x00000070 + +#define FTDLL_DDR1_166MHZ 0x0047F001 + +#define FTDLL_DDR1_200MHZ 0x0044D001 + +/* + * Low-level init happens right after start.S has switched to SVC32, + * flushed and disabled caches and disabled MMU. We're still running + * from the boot chip select, so the first thing we should do is set + * up RAM for us to relocate into. + */ + +.globl lowlevel_init + +lowlevel_init: + + /* Use 'r4 as the base for internal register accesses */ + ldr r4, =ORION5X_REGS_PHY_BASE + + /* move internal registers from the default 0xD0000000 + * to their intended location, defined by SoC */ + ldr r3, =0xD0000000 + add r3, r3, #0x20000 + str r4, [r3, #0x80] + + /* Use R3 as the base for DRAM registers */ + add r3, r4, #0x01000 + + /*DDR SDRAM Initialization Control */ + ldr r6, =0x00000001 + str r6, [r3, #0x480] + + /* Use R3 as the base for PCI registers */ + add r3, r4, #0x31000 + + /* Disable arbiter */ + ldr r6, =0x00000030 + str r6, [r3, #0xd00] + + /* Use R3 as the base for DRAM registers */ + add r3, r4, #0x01000 + + /* set all dram windows to 0 */ + mov r6, #0 + str r6, [r3, #0x504] + str r6, [r3, #0x50C] + str r6, [r3, #0x514] + str r6, [r3, #0x51C] + + /* 1) Configure SDRAM */ + ldr r6, =SDRAM_CONFIG + str r6, [r3, #0x400] + + /* 2) Set SDRAM Control reg */ + ldr r6, =SDRAM_CONTROL + str r6, [r3, #0x404] + + /* 3) Write SDRAM address control register */ + ldr r6, =SDRAM_ADDR_CTRL + str r6, [r3, #0x410] + + /* 4) Write SDRAM bank 0 size register */ + ldr r6, =SDRAM_BANK0_SIZE + str r6, [r3, #0x504] + /* keep other banks disabled */ + + /* 5) Write SDRAM open pages control register */ + ldr r6, =SDRAM_OPEN_PAGE_EN + str r6, [r3, #0x414] + + /* 6) Write SDRAM timing Low register */ + ldr r6, =SDRAM_TIME_CTRL_LOW + str r6, [r3, #0x408] + + /* 7) Write SDRAM timing High register */ + ldr r6, =SDRAM_TIME_CTRL_HI + str r6, [r3, #0x40C] + + /* 8) Write SDRAM mode register */ + /* The CPU must not attempt to change the SDRAM Mode register setting */ + /* prior to DRAM controller completion of the DRAM initialization */ + /* sequence. To guarantee this restriction, it is recommended that */ + /* the CPU sets the SDRAM Operation register to NOP command, performs */ + /* read polling until the register is back in Normal operation value, */ + /* and then sets SDRAM Mode register to its new value. */ + + /* 8.1 write 'nop' to SDRAM operation */ + ldr r6, =SDRAM_OP_NOP + str r6, [r3, #0x418] + + /* 8.2 poll SDRAM operation until back in 'normal' mode. */ +1: + ldr r6, [r3, #0x418] + cmp r6, #0 + bne 1b + + /* 8.3 Now its safe to write new value to SDRAM Mode register */ + ldr r6, =SDRAM_MODE + str r6, [r3, #0x41C] + + /* 8.4 Set new mode */ + ldr r6, =SDRAM_OP_SETMODE + str r6, [r3, #0x418] + + /* 8.5 poll SDRAM operation until back in 'normal' mode. */ +2: + ldr r6, [r3, #0x418] + cmp r6, #0 + bne 2b + + /* DDR SDRAM Address/Control Pads Calibration */ + ldr r6, [r3, #0x4C0] + + /* Set Bit [31] to make the register writable */ + orr r6, r6, #SDRAM_PAD_CTRL_WR_EN + str r6, [r3, #0x4C0] + + bic r6, r6, #SDRAM_PAD_CTRL_WR_EN + bic r6, r6, #SDRAM_PAD_CTRL_TUNE_EN + bic r6, r6, #SDRAM_PAD_CTRL_DRVN_MASK + bic r6, r6, #SDRAM_PAD_CTRL_DRVP_MASK + + /* Get the final N locked value of driving strength [22:17] */ + mov r1, r6 + mov r1, r1, LSL #9 + mov r1, r1, LSR #26 /* r1[5:0] = r3[22:17] */ + orr r1, r1, r1, LSL #6 /* r1[11:6] = r1[5:0] */ + + /* Write to both bits [5:0] and bits [11:6] */ + orr r6, r6, r1 + str r6, [r3, #0x4C0] + + /* DDR SDRAM Data Pads Calibration */ + ldr r6, [r3, #0x4C4] + + /* Set Bit [31] to make the register writable */ + orr r6, r6, #SDRAM_PAD_CTRL_WR_EN + str r6, [r3, #0x4C4] + + bic r6, r6, #SDRAM_PAD_CTRL_WR_EN + bic r6, r6, #SDRAM_PAD_CTRL_TUNE_EN + bic r6, r6, #SDRAM_PAD_CTRL_DRVN_MASK + bic r6, r6, #SDRAM_PAD_CTRL_DRVP_MASK + + /* Get the final N locked value of driving strength [22:17] */ + mov r1, r6 + mov r1, r1, LSL #9 + mov r1, r1, LSR #26 + orr r1, r1, r1, LSL #6 /* r1[5:0] = r3[22:17] */ + + /* Write to both bits [5:0] and bits [11:6] */ + orr r6, r6, r1 + + str r6, [r3, #0x4C4] + + /* Implement Guideline (GL# MEM-3) Drive Strength Value */ + /* Relevant for: 88F5181-A1/B0/B1 and 88F5281-A0/B0 */ + + ldr r1, =DDR1_PAD_STRENGTH_DEFAULT + + /* Enable writes to DDR SDRAM Addr/Ctrl Pads Calibration register */ + ldr r6, [r3, #0x4C0] + orr r6, r6, #SDRAM_PAD_CTRL_WR_EN + str r6, [r3, #0x4C0] + + /* Correct strength and disable writes again */ + bic r6, r6, #SDRAM_PAD_CTRL_WR_EN + bic r6, r6, #SDRAM_PAD_CTRL_DRV_STR_MASK + orr r6, r6, r1 + str r6, [r3, #0x4C0] + + /* Enable writes to DDR SDRAM Data Pads Calibration register */ + ldr r6, [r3, #0x4C4] + orr r6, r6, #SDRAM_PAD_CTRL_WR_EN + str r6, [r3, #0x4C4] + + /* Correct strength and disable writes again */ + bic r6, r6, #SDRAM_PAD_CTRL_DRV_STR_MASK + bic r6, r6, #SDRAM_PAD_CTRL_WR_EN + orr r6, r6, r1 + str r6, [r3, #0x4C4] + + /* Implement Guideline (GL# MEM-4) DQS Reference Delay Tuning */ + /* Relevant for: 88F5181-A1/B0/B1 and 88F5281-A0/B0 */ + + /* Get the "sample on reset" register for the DDR frequancy */ + ldr r3, =0x10000 + ldr r6, [r3, #0x010] + ldr r1, =MSAR_ARMDDRCLCK_MASK + and r1, r6, r1 + + ldr r6, =FTDLL_DDR1_166MHZ + cmp r1, #MSAR_ARMDDRCLCK_333_167 + beq 3f + cmp r1, #MSAR_ARMDDRCLCK_500_167 + beq 3f + cmp r1, #MSAR_ARMDDRCLCK_667_167 + beq 3f + + ldr r6, =FTDLL_DDR1_200MHZ + cmp r1, #MSAR_ARMDDRCLCK_400_200_1 + beq 3f + cmp r1, #MSAR_ARMDDRCLCK_400_200 + beq 3f + cmp r1, #MSAR_ARMDDRCLCK_600_200 + beq 3f + cmp r1, #MSAR_ARMDDRCLCK_800_200 + beq 3f + + ldr r6, =0 + +3: + /* Use R3 as the base for DRAM registers */ + add r3, r4, #0x01000 + + ldr r2, [r3, #0x484] + orr r2, r2, r6 + str r2, [r3, #0x484] + + /* Return to U-boot via saved link register */ + mov pc, lr diff --git a/arch/arm/mach-orion5x/timer.c b/arch/arm/mach-orion5x/timer.c new file mode 100644 index 0000000000..ec4f6bee8e --- /dev/null +++ b/arch/arm/mach-orion5x/timer.c @@ -0,0 +1,171 @@ +/* + * Copyright (C) 2010 Albert ARIBAUD + * + * Based on original Kirkwood support which is + * Copyright (C) Marvell International Ltd. and its affiliates + * Written-by: Prafulla Wadaskar + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include + +#define UBOOT_CNTR 0 /* counter to use for uboot timer */ + +/* Timer reload and current value registers */ +struct orion5x_tmr_val { + u32 reload; /* Timer reload reg */ + u32 val; /* Timer value reg */ +}; + +/* Timer registers */ +struct orion5x_tmr_registers { + u32 ctrl; /* Timer control reg */ + u32 pad[3]; + struct orion5x_tmr_val tmr[2]; + u32 wdt_reload; + u32 wdt_val; +}; + +struct orion5x_tmr_registers *orion5x_tmr_regs = + (struct orion5x_tmr_registers *)ORION5X_TIMER_BASE; + +/* + * ARM Timers Registers Map + */ +#define CNTMR_CTRL_REG (&orion5x_tmr_regs->ctrl) +#define CNTMR_RELOAD_REG(tmrnum) (&orion5x_tmr_regs->tmr[tmrnum].reload) +#define CNTMR_VAL_REG(tmrnum) (&orion5x_tmr_regs->tmr[tmrnum].val) + +/* + * ARM Timers Control Register + * CPU_TIMERS_CTRL_REG (CTCR) + */ +#define CTCR_ARM_TIMER_EN_OFFS(cntr) (cntr * 2) +#define CTCR_ARM_TIMER_EN_MASK(cntr) (1 << CTCR_ARM_TIMER_EN_OFFS) +#define CTCR_ARM_TIMER_EN(cntr) (1 << CTCR_ARM_TIMER_EN_OFFS(cntr)) +#define CTCR_ARM_TIMER_DIS(cntr) (0 << CTCR_ARM_TIMER_EN_OFFS(cntr)) + +#define CTCR_ARM_TIMER_AUTO_OFFS(cntr) ((cntr * 2) + 1) +#define CTCR_ARM_TIMER_AUTO_MASK(cntr) (1 << 1) +#define CTCR_ARM_TIMER_AUTO_EN(cntr) (1 << CTCR_ARM_TIMER_AUTO_OFFS(cntr)) +#define CTCR_ARM_TIMER_AUTO_DIS(cntr) (0 << CTCR_ARM_TIMER_AUTO_OFFS(cntr)) + +/* + * ARM Timer\Watchdog Reload Register + * CNTMR_RELOAD_REG (TRR) + */ +#define TRG_ARM_TIMER_REL_OFFS 0 +#define TRG_ARM_TIMER_REL_MASK 0xffffffff + +/* + * ARM Timer\Watchdog Register + * CNTMR_VAL_REG (TVRG) + */ +#define TVR_ARM_TIMER_OFFS 0 +#define TVR_ARM_TIMER_MASK 0xffffffff +#define TVR_ARM_TIMER_MAX 0xffffffff +#define TIMER_LOAD_VAL 0xffffffff + +static inline ulong read_timer(void) +{ + return readl(CNTMR_VAL_REG(UBOOT_CNTR)) + / (CONFIG_SYS_TCLK / 1000); +} + +DECLARE_GLOBAL_DATA_PTR; + +#define timestamp gd->arch.tbl +#define lastdec gd->arch.lastinc + +ulong get_timer_masked(void) +{ + ulong now = read_timer(); + + if (lastdec >= now) { + /* normal mode */ + timestamp += lastdec - now; + } else { + /* we have an overflow ... */ + timestamp += lastdec + + (TIMER_LOAD_VAL / (CONFIG_SYS_TCLK / 1000)) - now; + } + lastdec = now; + + return timestamp; +} + +ulong get_timer(ulong base) +{ + return get_timer_masked() - base; +} + +static inline ulong uboot_cntr_val(void) +{ + return readl(CNTMR_VAL_REG(UBOOT_CNTR)); +} + +void __udelay(unsigned long usec) +{ + uint current; + ulong delayticks; + + current = uboot_cntr_val(); + delayticks = (usec * (CONFIG_SYS_TCLK / 1000000)); + + if (current < delayticks) { + delayticks -= current; + while (uboot_cntr_val() < current) + ; + while ((TIMER_LOAD_VAL - delayticks) < uboot_cntr_val()) + ; + } else { + while (uboot_cntr_val() > (current - delayticks)) + ; + } +} + +/* + * init the counter + */ +int timer_init(void) +{ + unsigned int cntmrctrl; + + /* load value into timer */ + writel(TIMER_LOAD_VAL, CNTMR_RELOAD_REG(UBOOT_CNTR)); + writel(TIMER_LOAD_VAL, CNTMR_VAL_REG(UBOOT_CNTR)); + + /* enable timer in auto reload mode */ + cntmrctrl = readl(CNTMR_CTRL_REG); + cntmrctrl |= CTCR_ARM_TIMER_EN(UBOOT_CNTR); + cntmrctrl |= CTCR_ARM_TIMER_AUTO_EN(UBOOT_CNTR); + writel(cntmrctrl, CNTMR_CTRL_REG); + return 0; +} + +void timer_init_r(void) +{ + /* init the timestamp and lastdec value */ + lastdec = read_timer(); + timestamp = 0; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On ARM it returns the number of timer ticks per second. + */ +ulong get_tbclk (void) +{ + return (ulong)CONFIG_SYS_HZ; +} -- cgit v1.2.1