diff options
Diffstat (limited to 'board/udoo/udoo_spl.c')
| -rw-r--r-- | board/udoo/udoo_spl.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/board/udoo/udoo_spl.c b/board/udoo/udoo_spl.c new file mode 100644 index 0000000000..a1154edf69 --- /dev/null +++ b/board/udoo/udoo_spl.c @@ -0,0 +1,271 @@ +/* + * Copyright (C) 2015 Udoo + * Author: Tungyi Lin <tungyilin1127@gmail.com> + * Richard Hu <hakahu@gmail.com> + * Based on board/wandboard/spl.c + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm/arch/clock.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux.h> +#include <asm/arch/mx6-pins.h> +#include <asm/errno.h> +#include <asm/gpio.h> +#include <asm/imx-common/iomux-v3.h> +#include <asm/imx-common/video.h> +#include <mmc.h> +#include <fsl_esdhc.h> +#include <asm/arch/crm_regs.h> +#include <asm/io.h> +#include <asm/arch/sys_proto.h> +#include <spl.h> + +DECLARE_GLOBAL_DATA_PTR; + +#if defined(CONFIG_SPL_BUILD) +#include <asm/arch/mx6-ddr.h> + +/* + * Driving strength: + * 0x30 == 40 Ohm + * 0x28 == 48 Ohm + */ +#define IMX6DQ_DRIVE_STRENGTH 0x30 +#define IMX6SDL_DRIVE_STRENGTH 0x28 + +/* configure MX6Q/DUAL mmdc DDR io registers */ +static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = { + .dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH, + .dram_cas = IMX6DQ_DRIVE_STRENGTH, + .dram_ras = IMX6DQ_DRIVE_STRENGTH, + .dram_reset = IMX6DQ_DRIVE_STRENGTH, + .dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdba2 = 0x00000000, + .dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH, + .dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm0 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm1 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm2 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm3 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm4 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm5 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm6 = IMX6DQ_DRIVE_STRENGTH, + .dram_dqm7 = IMX6DQ_DRIVE_STRENGTH, +}; + +/* configure MX6Q/DUAL mmdc GRP io registers */ +static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = { + .grp_ddr_type = 0x000c0000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_addds = IMX6DQ_DRIVE_STRENGTH, + .grp_ctlds = IMX6DQ_DRIVE_STRENGTH, + .grp_ddrmode = 0x00020000, + .grp_b0ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b1ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b2ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b3ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b4ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b5ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b6ds = IMX6DQ_DRIVE_STRENGTH, + .grp_b7ds = IMX6DQ_DRIVE_STRENGTH, +}; + +/* configure MX6SOLO/DUALLITE mmdc DDR io registers */ +struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = { + .dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH, + .dram_cas = IMX6SDL_DRIVE_STRENGTH, + .dram_ras = IMX6SDL_DRIVE_STRENGTH, + .dram_reset = IMX6SDL_DRIVE_STRENGTH, + .dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdba2 = 0x00000000, + .dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH, + .dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm0 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm1 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm2 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm3 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm4 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm5 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm6 = IMX6SDL_DRIVE_STRENGTH, + .dram_dqm7 = IMX6SDL_DRIVE_STRENGTH, +}; + +/* configure MX6SOLO/DUALLITE mmdc GRP io registers */ +struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = { + .grp_ddr_type = 0x000c0000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_addds = IMX6SDL_DRIVE_STRENGTH, + .grp_ctlds = IMX6SDL_DRIVE_STRENGTH, + .grp_ddrmode = 0x00020000, + .grp_b0ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b1ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b2ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b3ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b4ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b5ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b6ds = IMX6SDL_DRIVE_STRENGTH, + .grp_b7ds = IMX6SDL_DRIVE_STRENGTH, +}; + +/* MT41K128M16JT-125 */ +static struct mx6_ddr3_cfg mt41k128m16jt_125 = { + /* quad = 1066, duallite = 800 */ + .mem_speed = 1066, + .density = 2, + .width = 16, + .banks = 8, + .rowaddr = 14, + .coladdr = 10, + .pagesz = 2, + .trcd = 1375, + .trcmin = 4875, + .trasmin = 3500, + .SRT = 0, +}; + +static struct mx6_mmdc_calibration mx6q_1g_mmdc_calib = { + .p0_mpwldectrl0 = 0x00350035, + .p0_mpwldectrl1 = 0x001F001F, + .p1_mpwldectrl0 = 0x00010001, + .p1_mpwldectrl1 = 0x00010001, + .p0_mpdgctrl0 = 0x43510360, + .p0_mpdgctrl1 = 0x0342033F, + .p1_mpdgctrl0 = 0x033F033F, + .p1_mpdgctrl1 = 0x03290266, + .p0_mprddlctl = 0x4B3E4141, + .p1_mprddlctl = 0x47413B4A, + .p0_mpwrdlctl = 0x42404843, + .p1_mpwrdlctl = 0x4C3F4C45, +}; + +static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = { + .p0_mpwldectrl0 = 0x002F0038, + .p0_mpwldectrl1 = 0x001F001F, + .p1_mpwldectrl0 = 0x001F001F, + .p1_mpwldectrl1 = 0x001F001F, + .p0_mpdgctrl0 = 0x425C0251, + .p0_mpdgctrl1 = 0x021B021E, + .p1_mpdgctrl0 = 0x021B021E, + .p1_mpdgctrl1 = 0x01730200, + .p0_mprddlctl = 0x45474C45, + .p1_mprddlctl = 0x44464744, + .p0_mpwrdlctl = 0x3F3F3336, + .p1_mpwrdlctl = 0x32383630, +}; + +/* DDR 64bit 1GB */ +static struct mx6_ddr_sysinfo mem_qdl = { + .dsize = 2, + .cs1_mirror = 0, + /* config for full 4GB range so that get_mem_size() works */ + .cs_density = 32, + .ncs = 1, + .bi_on = 1, + /* quad = 2, duallite = 1 */ + .rtt_nom = 2, + /* quad = 2, duallite = 1 */ + .rtt_wr = 2, + .ralat = 5, + .walat = 0, + .mif3_mode = 3, + .rst_to_cke = 0x23, + .sde_to_rst = 0x10, +}; + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + /* set the default clock gate to save power */ + writel(0x00C03F3F, &ccm->CCGR0); + writel(0x0030FC03, &ccm->CCGR1); + writel(0x0FFFC000, &ccm->CCGR2); + writel(0x3FF00000, &ccm->CCGR3); + writel(0x00FFF300, &ccm->CCGR4); + writel(0x0F0000C3, &ccm->CCGR5); + writel(0x000003FF, &ccm->CCGR6); +} + +static void gpr_init(void) +{ + struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR; + + /* enable AXI cache for VDOA/VPU/IPU */ + writel(0xF00000FF, &iomux->gpr[4]); + /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */ + writel(0x007F007F, &iomux->gpr[6]); + writel(0x007F007F, &iomux->gpr[7]); +} + +static void spl_dram_init(void) +{ + if (is_cpu_type(MXC_CPU_MX6DL)) { + mt41k128m16jt_125.mem_speed = 800; + mem_qdl.rtt_nom = 1; + mem_qdl.rtt_wr = 1; + + mx6sdl_dram_iocfg(64, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs); + mx6_dram_cfg(&mem_qdl, &mx6dl_1g_mmdc_calib, &mt41k128m16jt_125); + } else if (is_cpu_type(MXC_CPU_MX6Q)) { + mt41k128m16jt_125.mem_speed = 1066; + mem_qdl.rtt_nom = 2; + mem_qdl.rtt_wr = 2; + + mx6dq_dram_iocfg(64, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs); + mx6_dram_cfg(&mem_qdl, &mx6q_1g_mmdc_calib, &mt41k128m16jt_125); + } + + udelay(100); +} + +void board_init_f(ulong dummy) +{ + ccgr_init(); + + /* setup AIPS and disable watchdog */ + arch_cpu_init(); + + gpr_init(); + + /* iomux */ + board_early_init_f(); + + /* setup GP timer */ + timer_init(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); + + /* DDR initialization */ + spl_dram_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + /* load/boot image from boot device */ + board_init_r(NULL, 0); +} +#endif |
