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  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <common.h>
  20 #include <spl.h>
  21 #include <asm/omap_common.h>
  22 #include <asm/arch/omap.h>
  23 #include <asm/arch/mmc_host_def.h>
  24 #include <asm/arch/sys_proto.h>
  25
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 void save_omap_boot_params(void)
  29 {
  30         u32 rom_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
  31         u8 boot_device;
  32         u32 dev_desc, dev_data;
  33
  34         if ((rom_params <  NON_SECURE_SRAM_START) ||
  35             (rom_params > NON_SECURE_SRAM_END))
  36                 return;
  37
  38         /*
  39          * rom_params can be type casted to omap_boot_parameters and
  40          * used. But it not correct to assume that romcode structure
  41          * encoding would be same as u-boot. So use the defined offsets.
  42          */
  43         gd->arch.omap_boot_params.omap_bootdevice = boot_device =
  44                                    *((u8 *)(rom_params + BOOT_DEVICE_OFFSET));
  45
  46         gd->arch.omap_boot_params.ch_flags =
  47                                 *((u8 *)(rom_params + CH_FLAGS_OFFSET));
  48
  49         if ((boot_device >= MMC_BOOT_DEVICES_START) &&
  50             (boot_device <= MMC_BOOT_DEVICES_END)) {
  51 #if !defined(CONFIG_AM33XX) && !defined(CONFIG_TI81XX)
  52                 if ((omap_hw_init_context() ==
  53                                       OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)) {
  54                         gd->arch.omap_boot_params.omap_bootmode =
  55                         *((u8 *)(rom_params + BOOT_MODE_OFFSET));
  56                 } else
  57 #endif
  58                 {
  59                         dev_desc = *((u32 *)(rom_params + DEV_DESC_PTR_OFFSET));
  60                         dev_data = *((u32 *)(dev_desc + DEV_DATA_PTR_OFFSET));
  61                         gd->arch.omap_boot_params.omap_bootmode =
  62                                         *((u32 *)(dev_data + BOOT_MODE_OFFSET));
  63                 }
  64         }
  65 }
  66
  67 #ifdef CONFIG_SPL_BUILD
  68 u32 spl_boot_device(void)
  69 {
  70         return (u32) (gd->arch.omap_boot_params.omap_bootdevice);
  71 }
  72
  73 u32 spl_boot_mode(void)
  74 {
  75         return gd->arch.omap_boot_params.omap_bootmode;
  76 }
  77
  78 void spl_board_init(void)
  79 {
  80 #ifdef CONFIG_SPL_NAND_SUPPORT
  81         gpmc_init();
  82 #endif
  83 #if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT)
  84         arch_misc_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