arch/arm/cpu/armv7/omap-common/boot-common.c

   1 /*
   2  * boot-common.c
   3  *
   4  * Common bootmode functions for omap based boards
   5  *
   6  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <common.h>
  12 #include <spl.h>
  13 #include <asm/omap_common.h>
  14 #include <asm/arch/omap.h>
  15 #include <asm/arch/mmc_host_def.h>
  16 #include <asm/arch/sys_proto.h>
  17 #include <watchdog.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 void save_omap_boot_params(void)
  22 {
  23         u32 rom_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
  24         u8 boot_device;
  25         u32 dev_desc, dev_data;
  26
  27         if ((rom_params <  NON_SECURE_SRAM_START) ||
  28             (rom_params > NON_SECURE_SRAM_END))
  29                 return;
  30
  31         /*
  32          * rom_params can be type casted to omap_boot_parameters and
  33          * used. But it not correct to assume that romcode structure
  34          * encoding would be same as u-boot. So use the defined offsets.
  35          */
  36         boot_device = *((u8 *)(rom_params + BOOT_DEVICE_OFFSET));
  37
  38 #if defined(BOOT_DEVICE_NAND_I2C)
  39         /*
  40          * Re-map NAND&I2C boot-device to the "normal" NAND boot-device.
  41          * Otherwise the SPL boot IF can't handle this device correctly.
  42          * Somehow booting with Hynix 4GBit NAND H27U4G8 on Siemens
  43          * Draco leads to this boot-device passed to SPL from the BootROM.
  44          */
  45         if (boot_device == BOOT_DEVICE_NAND_I2C)
  46                 boot_device = BOOT_DEVICE_NAND;
  47 #endif
  48         gd->arch.omap_boot_params.omap_bootdevice = boot_device;
  49
  50         gd->arch.omap_boot_params.ch_flags =
  51                                 *((u8 *)(rom_params + CH_FLAGS_OFFSET));
  52
  53         if ((boot_device >= MMC_BOOT_DEVICES_START) &&
  54             (boot_device <= MMC_BOOT_DEVICES_END)) {
  55 #if !defined(CONFIG_AM33XX) && !defined(CONFIG_TI81XX) && \
  56         !defined(CONFIG_AM43XX)
  57                 if ((omap_hw_init_context() ==
  58                                       OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)) {
  59                         gd->arch.omap_boot_params.omap_bootmode =
  60                         *((u8 *)(rom_params + BOOT_MODE_OFFSET));
  61                 } else
  62 #endif
  63                 {
  64                         dev_desc = *((u32 *)(rom_params + DEV_DESC_PTR_OFFSET));
  65                         dev_data = *((u32 *)(dev_desc + DEV_DATA_PTR_OFFSET));
  66                         gd->arch.omap_boot_params.omap_bootmode =
  67                                         *((u32 *)(dev_data + BOOT_MODE_OFFSET));
  68                 }
  69         }
  70
  71 #if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
  72         /*
  73          * We get different values for QSPI_1 and QSPI_4 being used, but
  74          * don't actually care about this difference.  Rather than
  75          * mangle the later code, if we're coming in as QSPI_4 just
  76          * change to the QSPI_1 value.
  77          */
  78         if (gd->arch.omap_boot_params.omap_bootdevice == 11)
  79                 gd->arch.omap_boot_params.omap_bootdevice = BOOT_DEVICE_SPI;
  80 #endif
  81 }
  82
  83 #ifdef CONFIG_SPL_BUILD
  84 u32 spl_boot_device(void)
  85 {
  86         return (u32) (gd->arch.omap_boot_params.omap_bootdevice);
  87 }
  88
  89 u32 spl_boot_mode(void)
  90 {
  91         u32 val = gd->arch.omap_boot_params.omap_bootmode;
  92
  93         if (val == MMCSD_MODE_RAW)
  94                 return MMCSD_MODE_RAW;
  95         else if (val == MMCSD_MODE_FS)
  96                 return MMCSD_MODE_FS;
  97         else
  98 #ifdef CONFIG_SUPPORT_EMMC_BOOT
  99                 return MMCSD_MODE_EMMCBOOT;
 100 #else
 101                 return MMCSD_MODE_UNDEFINED;
 102 #endif
 103 }
 104
 105 void spl_board_init(void)
 106 {
 107 #ifdef CONFIG_SPL_NAND_SUPPORT
 108         gpmc_init();
 109 #endif
 110 #if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT)
 111         arch_misc_init();
 112 #endif
 113 #if defined(CONFIG_HW_WATCHDOG)
 114         hw_watchdog_init();
 115 #endif
 116 #ifdef CONFIG_AM33XX
 117         am33xx_spl_board_init();
 118 #endif
 119 }
 120
 121 int board_mmc_init(bd_t *bis)
 122 {
 123         switch (spl_boot_device()) {
 124         case BOOT_DEVICE_MMC1:
 125                 omap_mmc_init(0, 0, 0, -1, -1);
 126                 break;
 127         case BOOT_DEVICE_MMC2:
 128         case BOOT_DEVICE_MMC2_2:
 129                 omap_mmc_init(1, 0, 0, -1, -1);
 130                 break;
 131         }
 132         return 0;
 133 }
 134
 135 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 136 {
 137         typedef void __noreturn (*image_entry_noargs_t)(u32 *);
 138         image_entry_noargs_t image_entry =
 139                         (image_entry_noargs_t) spl_image->entry_point;
 140
 141         debug("image entry point: 0x%X\n", spl_image->entry_point);
 142         /* Pass the saved boot_params from rom code */
 143         image_entry((u32 *)&gd->arch.omap_boot_params);
 144 }
 145 #endif