upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.8 KiB
64 lines
1.8 KiB
14 years ago
|
/*
|
||
|
|
* Copyright 2011 Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* 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 <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
|
||
|
|
|
||
|
|
int mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
|
||
|
|
{
|
||
|
|
u8 *tmp_buf;
|
||
|
|
u32 blklen, code_offset, code_len, n;
|
||
|
|
|
||
|
|
blklen = mmc->read_bl_len;
|
||
|
|
tmp_buf = malloc(blklen);
|
||
|
|
if (!tmp_buf)
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
/* read out the first block, get the config data information */
|
||
|
|
n = mmc->block_dev.block_read(mmc->block_dev.dev, 0, 1, tmp_buf);
|
||
|
|
if (!n) {
|
||
|
|
free(tmp_buf);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get the Source Address, from offset 0x50 */
|
||
|
|
code_offset = *(u32 *)(tmp_buf + ESDHC_BOOT_IMAGE_ADDR);
|
||
|
|
|
||
|
|
/* Get the code size from offset 0x48 */
|
||
|
|
code_len = *(u32 *)(tmp_buf + ESDHC_BOOT_IMAGE_SIZE);
|
||
|
|
|
||
|
|
*env_addr = code_offset + code_len;
|
||
|
|
|
||
|
|
free(tmp_buf);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|