mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 13:16:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2011 Freescale Semiconductor, Inc.
|
|
*/
|
|
|
|
#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 ESDHC_DEFAULT_ENVADDR 0x400
|
|
|
|
int mmc_get_env_addr(struct mmc *mmc, int copy, 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, 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);
|
|
|
|
#ifdef CONFIG_ESDHC_HC_BLK_ADDR
|
|
/*
|
|
* On soc BSC9131, BSC9132:
|
|
* In High Capacity SD Cards (> 2 GBytes), the 32-bit source address and
|
|
* code length of these soc specify the memory address in block address
|
|
* format. Block length is fixed to 512 bytes as per the SD High
|
|
* Capacity specification.
|
|
*/
|
|
u64 tmp;
|
|
|
|
if (mmc->high_capacity) {
|
|
tmp = (u64)code_offset * blklen;
|
|
tmp += code_len * blklen;
|
|
} else
|
|
tmp = code_offset + code_len;
|
|
|
|
if ((tmp + CONFIG_ENV_SIZE > mmc->capacity) ||
|
|
(tmp > 0xFFFFFFFFU))
|
|
*env_addr = ESDHC_DEFAULT_ENVADDR;
|
|
else
|
|
*env_addr = tmp;
|
|
|
|
free(tmp_buf);
|
|
|
|
return 0;
|
|
#endif
|
|
|
|
*env_addr = code_offset + code_len;
|
|
|
|
free(tmp_buf);
|
|
|
|
return 0;
|
|
}
|