179 lines
4.4 KiB
C
179 lines
4.4 KiB
C
/*
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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 2008
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* Stuart Wood, Lab X Technologies <stuart.wood@labxtechnologies.com>
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*
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* (C) Copyright 2004
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* Jian Zhang, Texas Instruments, jzhang@ti.com.
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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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* SPDX-License-Identifier: GPL-2.0+
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*/
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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 <malloc.h>
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//#include <nand.h> /* fixme, using header's of amlnand */
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#include <search.h>
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#include <errno.h>
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#if defined(CONFIG_CMD_SAVEENV) && (defined(CONFIG_AML_NAND) || defined(CONFIG_AML_MTD))
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#define CMD_SAVEENV
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#elif defined(CONFIG_ENV_OFFSET_REDUND)
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#error CONFIG_ENV_OFFSET_REDUND must have CONFIG_CMD_SAVEENV & (CONFIG_AML_NAND || CONFIG_AML_MTD)
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#endif
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#if defined(CONFIG_ENV_SIZE_REDUND) && \
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(CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
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#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
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#endif
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#ifndef CONFIG_ENV_RANGE
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#define CONFIG_ENV_RANGE CONFIG_ENV_SIZE
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#endif
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#if defined(CONFIG_AML_NAND) || defined(CONFIG_AML_MTD)
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extern int amlnf_env_read(u_char *buf, int len);
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extern int amlnf_env_save(u_char *buf, int len);
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#ifndef CONFIG_STORE_COMPATIBLE
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#if defined(CONFIG_AML_NAND)
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/* fixme, can it be aml-nftl? */
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char *env_name_spec = "aml-nand";
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#elif defined(CONFIG_AML_MTD)
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char *env_name_spec = "aml-mtd";
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#endif
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#if defined(ENV_IS_EMBEDDED)
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env_t *env_ptr = &environment;
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#elif defined(CONFIG_NAND_ENV_DST)
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env_t *env_ptr = (env_t *)CONFIG_NAND_ENV_DST;
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#else /* ! ENV_IS_EMBEDDED */
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env_t *env_ptr;
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#endif /* ENV_IS_EMBEDDED */
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#endif /* CONFIG_STORE_COMPATIBLE */
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* This is called before nand_init() so we can't read NAND to
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* validate env data.
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*
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* Mark it OK for now. env_relocate() in env_common.c will call our
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* relocate function which does the real validation.
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*
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* When using a NAND boot image (like sequoia_nand), the environment
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* can be embedded or attached to the U-Boot image in NAND flash.
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* This way the SPL loads not only the U-Boot image from NAND but
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* also the environment.
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*/
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#ifdef CONFIG_STORE_COMPATIBLE
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int amlnand_env_int(void)
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#else
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int env_init(void)
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#endif
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{
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#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_NAND_ENV_DST)
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int crc1_ok = 0, crc2_ok = 0;
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env_t *tmp_env1;
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tmp_env1 = env_ptr;
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crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
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if (!crc1_ok && !crc2_ok) {
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gd->env_addr = 0;
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gd->env_valid = 0;
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return 0;
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} else if (crc1_ok && !crc2_ok) {
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gd->env_valid = 1;
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}
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if (gd->env_valid == 1)
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env_ptr = tmp_env1;
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gd->env_addr = (ulong)env_ptr->data;
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#else /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
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gd->env_addr = (ulong)&default_environment[0];
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gd->env_valid = 1;
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#endif /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
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return 0;
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}
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#ifdef CMD_SAVEENV
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#ifdef CONFIG_STORE_COMPATIBLE
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int amlnand_saveenv(void)
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#else
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int saveenv(void)
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#endif
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{
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int ret = 0;
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unsigned char *buf, *tmp_buf;
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env_t *env_new;
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buf = malloc(sizeof(env_t) + ARCH_DMA_MINALIGN);
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if (!buf)
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printf("%s: failed to malloc env buffer, size:0x%lx\n",
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__func__, sizeof(env_t));
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tmp_buf = (unsigned char *)(((unsigned long)buf & (~(ARCH_DMA_MINALIGN - 1))) + ARCH_DMA_MINALIGN);
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env_new = (env_t *)tmp_buf;
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ret = env_export(env_new);
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if (ret)
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return ret;
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ret = amlnf_env_save((u_char *)env_new, CONFIG_ENV_SIZE);
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free(buf);
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return ret;
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}
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#endif /* CMD_SAVEENV */
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static int readenv(u_char *buf)
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{
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int ret;
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ret = amlnf_env_read(buf, CONFIG_ENV_SIZE);
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if (ret) {
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printf("%s() return %d\n", __func__, ret);
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}
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return ret;
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}
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/*
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* The legacy NAND code saved the environment in the first NAND
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* device i.e., nand_dev_desc + 0. This is also the behaviour using
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* the new NAND code.
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*/
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#ifdef CONFIG_STORE_COMPATIBLE
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void amlnand_env_relocate_spec(void)
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#else
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void env_relocate_spec(void)
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#endif
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{
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#if !defined(ENV_IS_EMBEDDED)
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int ret;
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unsigned char *buf, *tmp_buf;
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tmp_buf = malloc(CONFIG_ENV_SIZE + ARCH_DMA_MINALIGN);
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if (!tmp_buf)
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printf("%s: failed to malloc env buffer, size: 0x%x\n",
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__func__, CONFIG_ENV_SIZE);
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buf = (unsigned char *)(((unsigned long)tmp_buf & (~(ARCH_DMA_MINALIGN - 1))) + ARCH_DMA_MINALIGN);
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ret = readenv(buf);
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if (ret) {
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set_default_env("!readenv() failed");
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//saveenv();
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return;
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}
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env_import((char *)buf, 1);
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free(tmp_buf);
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#endif /* ! ENV_IS_EMBEDDED */
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}
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#endif
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