mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-30 22:08:52 +09:00
![Yaniv Levinsky](/assets/img/avatar_default.png)
The function set_default_env() sets the hashtable flags for import_r(). Formally set_default_env() doesn't accept flags from its callers. In practice the caller can (un)set the H_INTERACTIVE flag, but it has to be done using the first character of the function's string argument. Other flags like H_FORCE can't be set by the caller. Change the function to accept flags argument. The benefits are: 1. The caller will have to explicitly set the H_INTERACTIVE flag, instead of un-setting it using a special char in a string. 2. Add the ability to propagate flags from the caller to himport(), especially the H_FORCE flag from do_env_default() in nvedit.c that currently gets ignored for "env default -a -f" commands. 3. Flags and messages will not be coupled together. A caller will be able to set flags without passing a string and vice versa. Please note: The propagation of H_FORCE from do_env_default() does not introduce any functional changes, because currently himport_r() is set to destroy the old environment regardless if H_FORCE flag is set or not. More changes are needed to utilize the propagation of H_FORCE. Signed-off-by: Yaniv Levinsky <yaniv.levinsky@compulab.co.il> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
122 lines
2.5 KiB
C
122 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, 0);
|
|
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),
|
|
};
|