mirror of
https://github.com/AsahiLinux/u-boot
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d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
122 lines
2.5 KiB
C
122 lines
2.5 KiB
C
/*
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* (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/* #define DEBUG */
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <linux/stddef.h>
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#include <errno.h>
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#include <memalign.h>
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#include <sata.h>
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#include <search.h>
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#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
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#error ENV REDUND not supported
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#endif
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#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
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#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
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#endif
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__weak int sata_get_env_dev(void)
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{
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return CONFIG_SYS_SATA_ENV_DEV;
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}
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#ifdef CONFIG_CMD_SAVEENV
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static inline int write_env(struct blk_desc *sata, unsigned long size,
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unsigned long offset, void *buffer)
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{
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uint blk_start, blk_cnt, n;
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blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
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blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
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n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
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return (n == blk_cnt) ? 0 : -1;
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}
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static int env_sata_save(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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struct blk_desc *sata = NULL;
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int env_sata, ret;
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if (sata_initialize())
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return 1;
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env_sata = sata_get_env_dev();
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sata = sata_get_dev(env_sata);
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if (sata == NULL) {
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printf("Unknown SATA(%d) device for environment!\n",
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env_sata);
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return 1;
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}
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ret = env_export(env_new);
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if (ret)
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return 1;
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printf("Writing to SATA(%d)...", env_sata);
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if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
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puts("failed\n");
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return 1;
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}
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puts("done\n");
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return 0;
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}
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#endif /* CONFIG_CMD_SAVEENV */
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static inline int read_env(struct blk_desc *sata, unsigned long size,
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unsigned long offset, void *buffer)
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{
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uint blk_start, blk_cnt, n;
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blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
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blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
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n = blk_dread(sata, blk_start, blk_cnt, buffer);
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return (n == blk_cnt) ? 0 : -1;
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}
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static void env_sata_load(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
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struct blk_desc *sata = NULL;
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int env_sata;
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if (sata_initialize())
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return -EIO;
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env_sata = sata_get_env_dev();
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sata = sata_get_dev(env_sata);
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if (sata == NULL) {
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printf("Unknown SATA(%d) device for environment!\n", env_sata);
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return -EIO;
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}
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if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
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set_default_env(NULL);
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return -EIO;
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}
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return env_import(buf, 1);
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}
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U_BOOT_ENV_LOCATION(sata) = {
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.location = ENVL_ESATA,
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ENV_NAME("SATA")
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.load = env_sata_load,
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.save = env_save_ptr(env_sata_save),
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};
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