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         gd->arch.omap_boot_params.omap_bootdevice = boot_device =
  37                                    *((u8 *)(rom_params + BOOT_DEVICE_OFFSET));
  38
  39         gd->arch.omap_boot_params.ch_flags =
  40                                 *((u8 *)(rom_params + CH_FLAGS_OFFSET));
  41
  42         if ((boot_device >= MMC_BOOT_DEVICES_START) &&
  43             (boot_device <= MMC_BOOT_DEVICES_END)) {
  44 #if !defined(CONFIG_AM33XX) && !defined(CONFIG_TI81XX) && \
  45         !defined(CONFIG_AM43XX)
  46                 if ((omap_hw_init_context() ==
  47                                       OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)) {
  48                         gd->arch.omap_boot_params.omap_bootmode =
  49                         *((u8 *)(rom_params + BOOT_MODE_OFFSET));
  50                 } else
  51 #endif
  52                 {
  53                         dev_desc = *((u32 *)(rom_params + DEV_DESC_PTR_OFFSET));
  54                         dev_data = *((u32 *)(dev_desc + DEV_DATA_PTR_OFFSET));
  55                         gd->arch.omap_boot_params.omap_bootmode =
  56                                         *((u32 *)(dev_data + BOOT_MODE_OFFSET));
  57                 }
  58         }
  59 }
  60
  61 #ifdef CONFIG_SPL_BUILD
  62 u32 spl_boot_device(void)
  63 {
  64         return (u32) (gd->arch.omap_boot_params.omap_bootdevice);
  65 }
  66
  67 u32 spl_boot_mode(void)
  68 {
  69         return gd->arch.omap_boot_params.omap_bootmode;
  70 }
  71
  72 void spl_board_init(void)
  73 {
  74 #ifdef CONFIG_SPL_NAND_SUPPORT
  75         gpmc_init();
  76 #endif
  77 #if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT)
  78         arch_misc_init();
  79 #endif
  80 #if defined(CONFIG_HW_WATCHDOG)
  81         hw_watchdog_init();
  82 #endif
  83 #ifdef CONFIG_AM33XX
  84         am33xx_spl_board_init();
  85 #endif
  86 }
  87
  88 int board_mmc_init(bd_t *bis)
  89 {
  90         switch (spl_boot_device()) {
  91         case BOOT_DEVICE_MMC1:
  92                 omap_mmc_init(0, 0, 0, -1, -1);
  93                 break;
  94         case BOOT_DEVICE_MMC2:
  95         case BOOT_DEVICE_MMC2_2:
  96                 omap_mmc_init(1, 0, 0, -1, -1);
  97                 break;
  98         }
  99         return 0;
 100 }
 101
 102 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 103 {
 104         typedef void __noreturn (*image_entry_noargs_t)(u32 *);
 105         image_entry_noargs_t image_entry =
 106                         (image_entry_noargs_t) spl_image->entry_point;
 107
 108         debug("image entry point: 0x%X\n", spl_image->entry_point);
 109         /* Pass the saved boot_params from rom code */
 110         image_entry((u32 *)&gd->arch.omap_boot_params);
 111 }
 112 #endif