u-boot/env/sata.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00

121 lines
2.5 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
*/
/* #define DEBUG */
#include <common.h>
#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <errno.h>
#include <memalign.h>
#include <sata.h>
#include <search.h>
#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
#error ENV REDUND not supported
#endif
#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
#endif
__weak int sata_get_env_dev(void)
{
return CONFIG_SYS_SATA_ENV_DEV;
}
#ifdef CONFIG_CMD_SAVEENV
static inline int write_env(struct blk_desc *sata, unsigned long size,
unsigned long offset, void *buffer)
{
uint blk_start, blk_cnt, n;
blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
return (n == blk_cnt) ? 0 : -1;
}
static int env_sata_save(void)
{
ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
struct blk_desc *sata = NULL;
int env_sata, ret;
if (sata_initialize())
return 1;
env_sata = sata_get_env_dev();
sata = sata_get_dev(env_sata);
if (sata == NULL) {
printf("Unknown SATA(%d) device for environment!\n",
env_sata);
return 1;
}
ret = env_export(env_new);
if (ret)
return 1;
printf("Writing to SATA(%d)...", env_sata);
if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
puts("failed\n");
return 1;
}
puts("done\n");
return 0;
}
#endif /* CONFIG_CMD_SAVEENV */
static inline int read_env(struct blk_desc *sata, unsigned long size,
unsigned long offset, void *buffer)
{
uint blk_start, blk_cnt, n;
blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
n = blk_dread(sata, blk_start, blk_cnt, buffer);
return (n == blk_cnt) ? 0 : -1;
}
static void env_sata_load(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
struct blk_desc *sata = NULL;
int env_sata;
if (sata_initialize())
return -EIO;
env_sata = sata_get_env_dev();
sata = sata_get_dev(env_sata);
if (sata == NULL) {
printf("Unknown SATA(%d) device for environment!\n", env_sata);
return -EIO;
}
if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
set_default_env(NULL);
return -EIO;
}
return env_import(buf, 1);
}
U_BOOT_ENV_LOCATION(sata) = {
.location = ENVL_ESATA,
ENV_NAME("SATA")
.load = env_sata_load,
.save = env_save_ptr(env_sata_save),
};