| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2018 Technexion Ltd. |
| * |
| * Author: Richard Hu <richard.hu@technexion.com> |
| */ |
| |
| #include <config.h> |
| #include <cpu_func.h> |
| #include <init.h> |
| #include <asm/arch/clock.h> |
| #include <asm/arch/imx-regs.h> |
| #include <asm/arch/crm_regs.h> |
| #include <asm/arch/mx7-pins.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/arch-mx7/mx7-ddr.h> |
| #include <asm/mach-imx/iomux-v3.h> |
| #include <asm/mach-imx/boot_mode.h> |
| #include <asm/gpio.h> |
| #include <asm/sections.h> |
| #include <fsl_esdhc_imx.h> |
| #include <spl.h> |
| |
| #if defined(CONFIG_XPL_BUILD) |
| |
| #ifdef CONFIG_SPL_OS_BOOT |
| int spl_start_uboot(void) |
| { |
| /* Break into full U-Boot on 'c' */ |
| if (serial_tstc() && serial_getc() == 'c') |
| return 1; |
| |
| return 0; |
| } |
| #endif |
| |
| static struct ddrc ddrc_regs_val = { |
| .mstr = 0x01040001, |
| .rfshtmg = 0x00400046, |
| .init1 = 0x00690000, |
| .init0 = 0x00020083, |
| .init3 = 0x09300004, |
| .init4 = 0x04080000, |
| .init5 = 0x00100004, |
| .rankctl = 0x0000033F, |
| .dramtmg0 = 0x09081109, |
| .dramtmg1 = 0x0007020d, |
| .dramtmg2 = 0x03040407, |
| .dramtmg3 = 0x00002006, |
| .dramtmg4 = 0x04020205, |
| .dramtmg5 = 0x03030202, |
| .dramtmg8 = 0x00000803, |
| .zqctl0 = 0x00800020, |
| .dfitmg0 = 0x02098204, |
| .dfitmg1 = 0x00030303, |
| .dfiupd0 = 0x80400003, |
| .dfiupd1 = 0x00100020, |
| .dfiupd2 = 0x80100004, |
| .addrmap4 = 0x00000F0F, |
| .odtcfg = 0x06000604, |
| .odtmap = 0x00000001, |
| .rfshtmg = 0x00400046, |
| .dramtmg0 = 0x09081109, |
| .addrmap0 = 0x0000001f, |
| .addrmap1 = 0x00080808, |
| .addrmap2 = 0x00000000, |
| .addrmap3 = 0x00000000, |
| .addrmap4 = 0x00000f0f, |
| .addrmap5 = 0x07070707, |
| .addrmap6 = 0x0f0f0707, |
| }; |
| |
| static struct ddrc_mp ddrc_mp_val = { |
| .pctrl_0 = 0x00000001, |
| }; |
| |
| static struct ddr_phy ddr_phy_regs_val = { |
| .phy_con0 = 0x17420f40, |
| .phy_con1 = 0x10210100, |
| .phy_con4 = 0x00060807, |
| .mdll_con0 = 0x1010007e, |
| .drvds_con0 = 0x00000d6e, |
| .cmd_sdll_con0 = 0x00000010, |
| .offset_lp_con0 = 0x0000000f, |
| .offset_rd_con0 = 0x08080808, |
| .offset_wr_con0 = 0x08080808, |
| }; |
| |
| static struct mx7_calibration calib_param = { |
| .num_val = 5, |
| .values = { |
| 0x0E207304, |
| 0x0E247304, |
| 0x0E247306, |
| 0x0E247304, |
| 0x0E207304, |
| }, |
| }; |
| |
| static void gpr_init(void) |
| { |
| struct iomuxc_gpr_base_regs *gpr_regs = |
| (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR; |
| writel(0x4F400005, &gpr_regs->gpr[1]); |
| } |
| |
| /* |
| * Revision Detection |
| * |
| * GPIO1_12 GPIO1_13 |
| * 0 0 1GB DDR3 |
| * 0 1 2GB DDR3 |
| * 1 0 512MB DDR3 |
| */ |
| |
| static int imx7d_pico_detect_board(void) |
| { |
| gpio_direction_input(IMX_GPIO_NR(1, 12)); |
| gpio_direction_input(IMX_GPIO_NR(1, 13)); |
| |
| return gpio_get_value(IMX_GPIO_NR(1, 12)) << 1 | |
| gpio_get_value(IMX_GPIO_NR(1, 13)); |
| } |
| |
| static void ddr_init(void) |
| { |
| switch (imx7d_pico_detect_board()) { |
| case 0: |
| ddrc_regs_val.addrmap6 = 0x0f070707; |
| break; |
| case 1: |
| ddrc_regs_val.addrmap0 = 0x0000001f; |
| ddrc_regs_val.addrmap1 = 0x00181818; |
| ddrc_regs_val.addrmap4 = 0x00000f0f; |
| ddrc_regs_val.addrmap5 = 0x04040404; |
| ddrc_regs_val.addrmap6 = 0x04040404; |
| break; |
| } |
| |
| mx7_dram_cfg(&ddrc_regs_val, &ddrc_mp_val, &ddr_phy_regs_val, |
| &calib_param); |
| } |
| |
| void board_init_f(ulong dummy) |
| { |
| arch_cpu_init(); |
| gpr_init(); |
| board_early_init_f(); |
| timer_init(); |
| preloader_console_init(); |
| ddr_init(); |
| memset(__bss_start, 0, __bss_end - __bss_start); |
| board_init_r(NULL, 0); |
| } |
| |
| void reset_cpu(void) |
| { |
| } |
| |
| #define USDHC_PAD_CTRL (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \ |
| PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU47KOHM) |
| |
| #define USDHC1_CD_GPIO IMX_GPIO_NR(5, 0) |
| /* EMMC/SD */ |
| static const iomux_v3_cfg_t usdhc1_pads[] = { |
| MX7D_PAD_SD1_CLK__SD1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD1_CMD__SD1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD1_DATA0__SD1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD1_DATA1__SD1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD1_DATA2__SD1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD1_DATA3__SD1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD1_CD_B__GPIO5_IO0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| }; |
| |
| #define USDHC3_CD_GPIO IMX_GPIO_NR(1, 14) |
| static const iomux_v3_cfg_t usdhc3_emmc_pads[] = { |
| MX7D_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_SD3_DATA7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| MX7D_PAD_GPIO1_IO14__GPIO1_IO14 | MUX_PAD_CTRL(USDHC_PAD_CTRL), |
| }; |
| |
| static struct fsl_esdhc_cfg usdhc_cfg[2] = { |
| {USDHC3_BASE_ADDR}, |
| {USDHC1_BASE_ADDR}, |
| }; |
| |
| int board_mmc_getcd(struct mmc *mmc) |
| { |
| struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; |
| int ret = 0; |
| |
| switch (cfg->esdhc_base) { |
| case USDHC1_BASE_ADDR: |
| ret = !gpio_get_value(USDHC1_CD_GPIO); |
| break; |
| case USDHC3_BASE_ADDR: |
| ret = !gpio_get_value(USDHC3_CD_GPIO); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| int board_mmc_init(struct bd_info *bis) |
| { |
| int ret; |
| u32 index; |
| |
| /* |
| * Following map is done: |
| * (USDHC) (Physical Port) |
| * usdhc3 SOM MicroSD/MMC |
| * usdhc1 Carrier board MicroSD |
| * Always set boot USDHC as mmc0 |
| */ |
| |
| imx_iomux_v3_setup_multiple_pads(usdhc3_emmc_pads, |
| ARRAY_SIZE(usdhc3_emmc_pads)); |
| gpio_direction_input(USDHC3_CD_GPIO); |
| |
| imx_iomux_v3_setup_multiple_pads(usdhc1_pads, |
| ARRAY_SIZE(usdhc1_pads)); |
| gpio_direction_input(USDHC1_CD_GPIO); |
| |
| switch (get_boot_device()) { |
| case SD1_BOOT: |
| usdhc_cfg[0].esdhc_base = USDHC1_BASE_ADDR; |
| usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); |
| usdhc_cfg[0].max_bus_width = 4; |
| usdhc_cfg[1].esdhc_base = USDHC3_BASE_ADDR; |
| usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); |
| usdhc_cfg[1].max_bus_width = 4; |
| break; |
| case MMC3_BOOT: |
| usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR; |
| usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); |
| usdhc_cfg[0].max_bus_width = 8; |
| usdhc_cfg[1].esdhc_base = USDHC1_BASE_ADDR; |
| usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); |
| usdhc_cfg[1].max_bus_width = 4; |
| break; |
| case SD3_BOOT: |
| default: |
| usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR; |
| usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); |
| usdhc_cfg[0].max_bus_width = 4; |
| usdhc_cfg[1].esdhc_base = USDHC1_BASE_ADDR; |
| usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); |
| usdhc_cfg[1].max_bus_width = 4; |
| break; |
| } |
| |
| for (index = 0; index < CFG_SYS_FSL_USDHC_NUM; ++index) { |
| ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| #endif |