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121 lines
2.5 KiB
121 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2010-2016 Freescale Semiconductor, Inc. |
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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, 0); |
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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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