Commit 125d193c authored by Peng Fan's avatar Peng Fan Committed by Tom Rini

common: env: support sata device

Introduce env support for sata device.
1. Implement write_env/read_env/env_relocate_spec/saveenv/sata_get_env_dev
2. If want to enable this feature, define CONFIG_ENV_IS_IN_SATA, and
   define CONFIG_SYS_SATA_ENV_DEV or implement your own sata_get_ev_dev.
Signed-off-by: default avatarPeng Fan <van.freenix@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Stuart Longland <stuartl@vrt.com.au>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: default avatarTom Rini <trini@konsulko.com>
parent 108f8418
......@@ -49,12 +49,13 @@ DECLARE_GLOBAL_DATA_PTR;
!defined(CONFIG_ENV_IS_IN_NAND) && \
!defined(CONFIG_ENV_IS_IN_NVRAM) && \
!defined(CONFIG_ENV_IS_IN_ONENAND) && \
!defined(CONFIG_ENV_IS_IN_SATA) && \
!defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
!defined(CONFIG_ENV_IS_IN_REMOTE) && \
!defined(CONFIG_ENV_IS_IN_UBI) && \
!defined(CONFIG_ENV_IS_NOWHERE)
# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
SPI_FLASH|NVRAM|MMC|FAT|EXT4|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
SATA|SPI_FLASH|NVRAM|MMC|FAT|EXT4|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
#endif
/*
......
......@@ -50,6 +50,7 @@ obj-$(CONFIG_ENV_IS_IN_EXT4) += env_ext4.o
obj-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o
obj-$(CONFIG_ENV_IS_IN_NVRAM) += env_nvram.o
obj-$(CONFIG_ENV_IS_IN_ONENAND) += env_onenand.o
obj-$(CONFIG_ENV_IS_IN_SATA) += env_sata.o
obj-$(CONFIG_ENV_IS_IN_SPI_FLASH) += env_sf.o
obj-$(CONFIG_ENV_IS_IN_REMOTE) += env_remote.o
obj-$(CONFIG_ENV_IS_IN_UBI) += env_ubi.o
......
/*
* (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/* #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
char *env_name_spec = "SATA";
DECLARE_GLOBAL_DATA_PTR;
__weak int sata_get_env_dev(void)
{
return CONFIG_SYS_SATA_ENV_DEV;
}
int env_init(void)
{
/* use default */
gd->env_addr = (ulong)&default_environment[0];
gd->env_valid = 1;
return 0;
}
#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;
}
int saveenv(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;
}
void env_relocate_spec(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
struct blk_desc *sata = NULL;
int env_sata;
if (sata_initialize())
return;
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;
}
if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf))
return set_default_env(NULL);
env_import(buf, 1);
}
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