uboot/board/compulab/cl-som-imx7/spl.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * SPL board functions for CompuLab CL-SOM-iMX7 module
   4 *
   5 * (C) Copyright 2017 CompuLab, Ltd. http://www.compulab.com
   6 *
   7 * Author: Uri Mashiach <uri.mashiach@compulab.co.il>
   8 */
   9
  10#include <common.h>
  11#include <spl.h>
  12#include <fsl_esdhc.h>
  13#include <asm/mach-imx/iomux-v3.h>
  14#include <asm/arch-mx7/mx7-pins.h>
  15#include <asm/arch-mx7/clock.h>
  16#include <asm/arch-mx7/mx7-ddr.h>
  17#include "common.h"
  18
  19#ifdef CONFIG_FSL_ESDHC
  20
  21static struct fsl_esdhc_cfg cl_som_imx7_spl_usdhc_cfg = {
  22        USDHC1_BASE_ADDR, 0, 4};
  23
  24int board_mmc_init(bd_t *bis)
  25{
  26        cl_som_imx7_usdhc1_pads_set();
  27        cl_som_imx7_spl_usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
  28        return fsl_esdhc_initialize(bis, &cl_som_imx7_spl_usdhc_cfg);
  29}
  30#endif /* CONFIG_FSL_ESDHC */
  31
  32static iomux_v3_cfg_t const led_pads[] = {
  33        MX7D_PAD_SAI1_TX_SYNC__GPIO6_IO14 | MUX_PAD_CTRL(PAD_CTL_PUS_PU5KOHM |
  34                PAD_CTL_PUE | PAD_CTL_SRE_SLOW)
  35};
  36
  37static struct ddrc cl_som_imx7_spl_ddrc_regs_val = {
  38        .init1          = 0x00690000,
  39        .init0          = 0x00020083,
  40        .init3          = 0x09300004,
  41        .init4          = 0x04080000,
  42        .init5          = 0x00100004,
  43        .rankctl        = 0x0000033F,
  44        .dramtmg1       = 0x0007020E,
  45        .dramtmg2       = 0x03040407,
  46        .dramtmg3       = 0x00002006,
  47        .dramtmg4       = 0x04020305,
  48        .dramtmg5       = 0x03030202,
  49        .dramtmg8       = 0x00000803,
  50        .zqctl0         = 0x00810021,
  51        .dfitmg0        = 0x02098204,
  52        .dfitmg1        = 0x00030303,
  53        .dfiupd0        = 0x80400003,
  54        .dfiupd1        = 0x00100020,
  55        .dfiupd2        = 0x80100004,
  56        .addrmap4       = 0x00000F0F,
  57        .odtcfg         = 0x06000604,
  58        .odtmap         = 0x00000001,
  59};
  60
  61static struct ddrc_mp cl_som_imx7_spl_ddrc_mp_val = {
  62        .pctrl_0        = 0x00000001,
  63};
  64
  65static struct ddr_phy cl_som_imx7_spl_ddr_phy_regs_val = {
  66        .phy_con0       = 0x17420F40,
  67        .phy_con1       = 0x10210100,
  68        .phy_con4       = 0x00060807,
  69        .mdll_con0      = 0x1010007E,
  70        .drvds_con0     = 0x00000D6E,
  71        .cmd_sdll_con0  = 0x00000010,
  72        .offset_lp_con0 = 0x0000000F,
  73};
  74
  75struct mx7_calibration cl_som_imx7_spl_calib_param = {
  76        .num_val        = 5,
  77        .values         = {
  78                0x0E407304,
  79                0x0E447304,
  80                0x0E447306,
  81                0x0E447304,
  82                0x0E407304,
  83        },
  84};
  85
  86static void cl_som_imx7_spl_dram_cfg_size(u32 ram_size)
  87{
  88        switch (ram_size) {
  89        case SZ_256M:
  90                cl_som_imx7_spl_ddrc_regs_val.mstr              = 0x01041001;
  91                cl_som_imx7_spl_ddrc_regs_val.rfshtmg           = 0x00400046;
  92                cl_som_imx7_spl_ddrc_regs_val.dramtmg0          = 0x090E1109;
  93                cl_som_imx7_spl_ddrc_regs_val.addrmap0          = 0x00000014;
  94                cl_som_imx7_spl_ddrc_regs_val.addrmap1          = 0x00151515;
  95                cl_som_imx7_spl_ddrc_regs_val.addrmap5          = 0x03030303;
  96                cl_som_imx7_spl_ddrc_regs_val.addrmap6          = 0x0F0F0303;
  97                cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0C0C0C0C;
  98                cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x04040404;
  99                break;
 100        case SZ_512M:
 101                cl_som_imx7_spl_ddrc_regs_val.mstr              = 0x01040001;
 102                cl_som_imx7_spl_ddrc_regs_val.rfshtmg           = 0x00400046;
 103                cl_som_imx7_spl_ddrc_regs_val.dramtmg0          = 0x090E1109;
 104                cl_som_imx7_spl_ddrc_regs_val.addrmap0          = 0x00000015;
 105                cl_som_imx7_spl_ddrc_regs_val.addrmap1          = 0x00161616;
 106                cl_som_imx7_spl_ddrc_regs_val.addrmap5          = 0x04040404;
 107                cl_som_imx7_spl_ddrc_regs_val.addrmap6          = 0x0F0F0404;
 108                cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0C0C0C0C;
 109                cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x04040404;
 110                break;
 111        case SZ_1G:
 112                cl_som_imx7_spl_ddrc_regs_val.mstr              = 0x01040001;
 113                cl_som_imx7_spl_ddrc_regs_val.rfshtmg           = 0x00400046;
 114                cl_som_imx7_spl_ddrc_regs_val.dramtmg0          = 0x090E1109;
 115                cl_som_imx7_spl_ddrc_regs_val.addrmap0          = 0x00000016;
 116                cl_som_imx7_spl_ddrc_regs_val.addrmap1          = 0x00171717;
 117                cl_som_imx7_spl_ddrc_regs_val.addrmap5          = 0x04040404;
 118                cl_som_imx7_spl_ddrc_regs_val.addrmap6          = 0x0F040404;
 119                cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0A0A0A0A;
 120                cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x02020202;
 121                break;
 122        case SZ_2G:
 123                cl_som_imx7_spl_ddrc_regs_val.mstr              = 0x01040001;
 124                cl_som_imx7_spl_ddrc_regs_val.rfshtmg           = 0x0040005E;
 125                cl_som_imx7_spl_ddrc_regs_val.dramtmg0          = 0x090E110A;
 126                cl_som_imx7_spl_ddrc_regs_val.addrmap0          = 0x00000018;
 127                cl_som_imx7_spl_ddrc_regs_val.addrmap1          = 0x00181818;
 128                cl_som_imx7_spl_ddrc_regs_val.addrmap5          = 0x04040404;
 129                cl_som_imx7_spl_ddrc_regs_val.addrmap6          = 0x04040404;
 130                cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0A0A0A0A;
 131                cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x04040404;
 132                break;
 133        }
 134
 135        mx7_dram_cfg(&cl_som_imx7_spl_ddrc_regs_val,
 136                     &cl_som_imx7_spl_ddrc_mp_val,
 137                     &cl_som_imx7_spl_ddr_phy_regs_val,
 138                     &cl_som_imx7_spl_calib_param);
 139}
 140
 141static void cl_som_imx7_spl_dram_cfg(void)
 142{
 143        ulong ram_size_test, ram_size = 0;
 144
 145        for (ram_size = SZ_2G; ram_size >= SZ_256M; ram_size >>= 1) {
 146                cl_som_imx7_spl_dram_cfg_size(ram_size);
 147                ram_size_test = get_ram_size((long int *)PHYS_SDRAM, ram_size);
 148                if (ram_size_test == ram_size)
 149                        break;
 150        }
 151
 152        if (ram_size < SZ_256M) {
 153                puts("!!!ERROR!!! DRAM detection failed!!!\n");
 154                hang();
 155        }
 156}
 157
 158#ifdef CONFIG_SPL_SPI_SUPPORT
 159
 160static void cl_som_imx7_spl_spi_init(void)
 161{
 162        cl_som_imx7_espi1_pads_set();
 163}
 164#else /* !CONFIG_SPL_SPI_SUPPORT */
 165static void cl_som_imx7_spl_spi_init(void) {}
 166#endif /* CONFIG_SPL_SPI_SUPPORT */
 167
 168void board_init_f(ulong dummy)
 169{
 170        imx_iomux_v3_setup_multiple_pads(led_pads, 1);
 171        /* setup AIPS and disable watchdog */
 172        arch_cpu_init();
 173        /* setup GP timer */
 174        timer_init();
 175        cl_som_imx7_spl_spi_init();
 176        cl_som_imx7_uart1_pads_set();
 177        /* UART clocks enabled and gd valid - init serial console */
 178        preloader_console_init();
 179        /* DRAM detection  */
 180        cl_som_imx7_spl_dram_cfg();
 181        /* Clear the BSS. */
 182        memset(__bss_start, 0, __bss_end - __bss_start);
 183        /* load/boot image from boot device */
 184        board_init_r(NULL, 0);
 185}
 186
 187void spl_board_init(void)
 188{
 189        u32 boot_device = spl_boot_device();
 190
 191        if (boot_device == BOOT_DEVICE_SPI)
 192                puts("Booting from SPI flash\n");
 193        else if (boot_device == BOOT_DEVICE_MMC1)
 194                puts("Booting from SD card\n");
 195        else
 196                puts("Unknown boot device\n");
 197}
 198
 199void board_boot_order(u32 *spl_boot_list)
 200{
 201        spl_boot_list[0] = spl_boot_device();
 202        switch (spl_boot_list[0]) {
 203        case BOOT_DEVICE_SPI:
 204                spl_boot_list[1] = BOOT_DEVICE_MMC1;
 205                break;
 206        case BOOT_DEVICE_MMC1:
 207                spl_boot_list[1] = BOOT_DEVICE_SPI;
 208                break;
 209        }
 210}
 211