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2166ebf783
For multiple env drivers to correctly implement fallback when one environment fails to load (e.g. crc error), the return value of env_import has to be propagated by all env driver's load function. Without this change, the first driver that succeeds to load an environment with an invalid CRC return 0 (success) and no other drivers are checked. Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
/*
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* (C) Copyright 2011-2012 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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#ifdef ENV_IS_EMBEDDED
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env_t *env_ptr = &environment;
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#else /* ! ENV_IS_EMBEDDED */
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env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
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#endif /* ENV_IS_EMBEDDED */
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DECLARE_GLOBAL_DATA_PTR;
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#if !defined(CONFIG_ENV_OFFSET)
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#define CONFIG_ENV_OFFSET 0
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#endif
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static int env_remote_init(void)
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{
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if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
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gd->env_addr = (ulong)&(env_ptr->data);
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gd->env_valid = ENV_VALID;
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return 0;
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}
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return -ENOENT;
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}
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#ifdef CONFIG_CMD_SAVEENV
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static int env_remote_save(void)
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{
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#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
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printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
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return 1;
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#else
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return 0;
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#endif
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}
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#endif /* CONFIG_CMD_SAVEENV */
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static int env_remote_load(void)
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{
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#ifndef ENV_IS_EMBEDDED
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return env_import((char *)env_ptr, 1);
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#endif
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return 0;
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}
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U_BOOT_ENV_LOCATION(remote) = {
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.location = ENVL_REMOTE,
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ENV_NAME("Remote")
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.load = env_remote_load,
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.save = env_save_ptr(env_remote_save),
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.init = env_remote_init,
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};
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