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/*
* Copyright (C) 2012 Samsung Electronics
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include<common.h>
#include<config.h>
enum boot_mode {
BOOT_MODE_MMC = 4,
BOOT_MODE_SERIAL = 20,
/* Boot based on Operating Mode pin settings */
BOOT_MODE_OM = 32,
BOOT_MODE_USB, /* Boot using USB download */
};
typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst);
/*
* Copy U-boot from mmc to RAM:
* COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
* Pointer to API (Data transfer from mmc to ram)
*/
void copy_uboot_to_ram(void)
{
spi_copy_func_t spi_copy;
enum boot_mode bootmode;
u32 (*copy_bl2)(u32, u32, u32);
bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT;
switch (bootmode) {
case BOOT_MODE_SERIAL:
spi_copy = *(spi_copy_func_t *)EXYNOS_COPY_SPI_FNPTR_ADDR;
spi_copy(SPI_FLASH_UBOOT_POS, CONFIG_BL2_SIZE,
CONFIG_SYS_TEXT_BASE);
break;
case BOOT_MODE_MMC:
copy_bl2 = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR;
copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT,
CONFIG_SYS_TEXT_BASE);
break;
default:
break;
}
}
void board_init_f(unsigned long bootflag)
{
__attribute__((noreturn)) void (*uboot)(void);
copy_uboot_to_ram();
/* Jump to U-Boot image */
uboot = (void *)CONFIG_SYS_TEXT_BASE;
(*uboot)();
/* Never returns Here */
}
/* Place Holders */
void board_init_r(gd_t *id, ulong dest_addr)
{
/* Function attribute is no-return */
/* This Function never executes */
while (1)
;
}
void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) {}
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