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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
71 lines
1.3 KiB
C
71 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2010
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Andreas Heppel <aheppel@sysgo.de>
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*/
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#include <command.h>
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#include <env.h>
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#include <env_internal.h>
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#include <asm/global_data.h>
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#include <linux/stddef.h>
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#include <search.h>
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#include <errno.h>
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#include <u-boot/crc.h>
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DECLARE_GLOBAL_DATA_PTR;
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static env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
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static int env_nvram_load(void)
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{
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char buf[CONFIG_ENV_SIZE];
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memcpy(buf, (void *)CONFIG_ENV_ADDR, CONFIG_ENV_SIZE);
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return env_import(buf, 1, H_EXTERNAL);
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}
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static int env_nvram_save(void)
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{
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env_t env_new;
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int rcode = 0;
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rcode = env_export(&env_new);
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if (rcode)
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return rcode;
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if (memcpy((char *)CONFIG_ENV_ADDR, &env_new, CONFIG_ENV_SIZE) == NULL)
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rcode = 1;
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return rcode;
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}
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/*
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* Initialize Environment use
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*
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* We are still running from ROM, so data use is limited
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*/
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static int env_nvram_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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} else {
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gd->env_valid = ENV_INVALID;
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}
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return 0;
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}
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U_BOOT_ENV_LOCATION(nvram) = {
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.location = ENVL_NVRAM,
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ENV_NAME("NVRAM")
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.load = env_nvram_load,
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.save = env_save_ptr(env_nvram_save),
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.init = env_nvram_init,
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};
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