mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 05:50:17 +00:00
1eaa742d85
Add support of loading image, binary for MMC and SPI during SPL boot. Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
151 lines
3.4 KiB
C
151 lines
3.4 KiB
C
/*
|
|
* Copyright 2013 Freescale Semiconductor, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mmc.h>
|
|
#include <malloc.h>
|
|
|
|
/*
|
|
* The environment variables are written to just after the u-boot image
|
|
* on SDCard, so we must read the MBR to get the start address and code
|
|
* length of the u-boot image, then calculate the address of the env.
|
|
*/
|
|
#define ESDHC_BOOT_IMAGE_SIZE 0x48
|
|
#define ESDHC_BOOT_IMAGE_ADDR 0x50
|
|
#define MBRDBR_BOOT_SIG_55 0x1fe
|
|
#define MBRDBR_BOOT_SIG_AA 0x1ff
|
|
#define CONFIG_CFG_DATA_SECTOR 0
|
|
|
|
|
|
void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
|
|
{
|
|
uint blk_start, blk_cnt, err;
|
|
|
|
struct mmc *mmc = find_mmc_device(0);
|
|
if (!mmc) {
|
|
puts("spl: mmc device not found!!\n");
|
|
hang();
|
|
}
|
|
|
|
if (mmc_init(mmc)) {
|
|
puts("MMC init failed\n");
|
|
return;
|
|
}
|
|
|
|
blk_start = ALIGN(offs, mmc->read_bl_len) / mmc->read_bl_len;
|
|
blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
|
|
|
|
err = mmc->block_dev.block_read(0, blk_start, blk_cnt, vdst);
|
|
if (err != blk_cnt) {
|
|
puts("spl: mmc read failed!!\n");
|
|
hang();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The main entry for mmc booting. It's necessary that SDRAM is already
|
|
* configured and available since this code loads the main U-Boot image
|
|
* from mmc into SDRAM and starts it from there.
|
|
*/
|
|
|
|
void __noreturn mmc_boot(void)
|
|
{
|
|
__attribute__((noreturn)) void (*uboot)(void);
|
|
uint blk_start, blk_cnt, err;
|
|
#ifndef CONFIG_FSL_CORENET
|
|
uchar *tmp_buf;
|
|
u32 blklen;
|
|
uchar val;
|
|
uint i, byte_num;
|
|
#endif
|
|
u32 offset, code_len;
|
|
struct mmc *mmc;
|
|
|
|
mmc = find_mmc_device(0);
|
|
if (!mmc) {
|
|
puts("spl: mmc device not found!!\n");
|
|
hang();
|
|
}
|
|
|
|
#ifdef CONFIG_FSL_CORENET
|
|
offset = CONFIG_SYS_MMC_U_BOOT_OFFS;
|
|
code_len = CONFIG_SYS_MMC_U_BOOT_SIZE;
|
|
#else
|
|
blklen = mmc->read_bl_len;
|
|
tmp_buf = malloc(blklen);
|
|
if (!tmp_buf) {
|
|
puts("spl: malloc memory failed!!\n");
|
|
hang();
|
|
}
|
|
memset(tmp_buf, 0, blklen);
|
|
|
|
/*
|
|
* Read source addr from sd card
|
|
*/
|
|
err = mmc->block_dev.block_read(0, CONFIG_CFG_DATA_SECTOR, 1, tmp_buf);
|
|
if (err != 1) {
|
|
puts("spl: mmc read failed!!\n");
|
|
free(tmp_buf);
|
|
hang();
|
|
}
|
|
|
|
val = *(tmp_buf + MBRDBR_BOOT_SIG_55);
|
|
if (0x55 != val) {
|
|
puts("spl: mmc signature is not valid!!\n");
|
|
free(tmp_buf);
|
|
hang();
|
|
}
|
|
val = *(tmp_buf + MBRDBR_BOOT_SIG_AA);
|
|
if (0xAA != val) {
|
|
puts("spl: mmc signature is not valid!!\n");
|
|
free(tmp_buf);
|
|
hang();
|
|
}
|
|
|
|
byte_num = 4;
|
|
offset = 0;
|
|
for (i = 0; i < byte_num; i++) {
|
|
val = *(tmp_buf + ESDHC_BOOT_IMAGE_ADDR + i);
|
|
offset = (offset << 8) + val;
|
|
}
|
|
offset += CONFIG_SYS_MMC_U_BOOT_OFFS;
|
|
/* Get the code size from offset 0x48 */
|
|
byte_num = 4;
|
|
code_len = 0;
|
|
for (i = 0; i < byte_num; i++) {
|
|
val = *(tmp_buf + ESDHC_BOOT_IMAGE_SIZE + i);
|
|
code_len = (code_len << 8) + val;
|
|
}
|
|
code_len -= CONFIG_SYS_MMC_U_BOOT_OFFS;
|
|
/*
|
|
* Load U-Boot image from mmc into RAM
|
|
*/
|
|
#endif
|
|
blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
|
|
blk_cnt = ALIGN(code_len, mmc->read_bl_len) / mmc->read_bl_len;
|
|
err = mmc->block_dev.block_read(0, blk_start, blk_cnt,
|
|
(uchar *)CONFIG_SYS_MMC_U_BOOT_DST);
|
|
if (err != blk_cnt) {
|
|
puts("spl: mmc read failed!!\n");
|
|
#ifndef CONFIG_FSL_CORENET
|
|
free(tmp_buf);
|
|
#endif
|
|
hang();
|
|
}
|
|
|
|
/*
|
|
* Clean d-cache and invalidate i-cache, to
|
|
* make sure that no stale data is executed.
|
|
*/
|
|
flush_cache(CONFIG_SYS_MMC_U_BOOT_DST, CONFIG_SYS_MMC_U_BOOT_SIZE);
|
|
|
|
/*
|
|
* Jump to U-Boot image
|
|
*/
|
|
uboot = (void *)CONFIG_SYS_MMC_U_BOOT_START;
|
|
(*uboot)();
|
|
}
|