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 <asm/spl.h>
  21 #include <asm/omap_common.h>
  22 #include <asm/arch/omap.h>
  23 #include <asm/arch/mmc_host_def.h>
  24
  25 /*
  26  * This is used to verify if the configuration header
  27  * was executed by rom code prior to control of transfer
  28  * to the bootloader. SPL is responsible for saving and
  29  * passing the boot_params pointer to the u-boot.
  30  */
  31 struct omap_boot_parameters boot_params __attribute__ ((section(".data")));
  32
  33 #ifdef CONFIG_SPL_BUILD
  34 /*
  35  * We use static variables because global data is not ready yet.
  36  * Initialized data is available in SPL right from the beginning.
  37  * We would not typically need to save these parameters in regular
  38  * U-Boot. This is needed only in SPL at the moment.
  39  */
  40 u32 omap_bootmode = MMCSD_MODE_FAT;
  41
  42 u32 spl_boot_device(void)
  43 {
  44         return (u32) (boot_params.omap_bootdevice);
  45 }
  46
  47 u32 spl_boot_mode(void)
  48 {
  49         return omap_bootmode;
  50 }
  51
  52 int board_mmc_init(bd_t *bis)
  53 {
  54         switch (spl_boot_device()) {
  55         case BOOT_DEVICE_MMC1:
  56                 omap_mmc_init(0, 0, 0);
  57                 break;
  58         case BOOT_DEVICE_MMC2:
  59         case BOOT_DEVICE_MMC2_2:
  60                 omap_mmc_init(1, 0, 0);
  61                 break;
  62         }
  63         return 0;
  64 }
  65 #endif