/*
- * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
+ * (C) Copyright 2008-2011 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
#include <linux/stddef.h>
#include <malloc.h>
#include <mmc.h>
+#include <search.h>
#include <errno.h>
-/* references to names in env_common.c */
-extern uchar default_environment[];
-
char *env_name_spec = "MMC";
#ifdef ENV_IS_EMBEDDED
-extern uchar environment[];
-env_t *env_ptr = (env_t *)(&environment[0]);
+env_t *env_ptr = &environment;
#else /* ! ENV_IS_EMBEDDED */
-env_t *env_ptr = NULL;
+env_t *env_ptr;
#endif /* ENV_IS_EMBEDDED */
-/* local functions */
-#if !defined(ENV_IS_EMBEDDED)
-static void use_default(void);
-#endif
-
DECLARE_GLOBAL_DATA_PTR;
-uchar env_get_char_spec(int index)
+#if !defined(CONFIG_ENV_OFFSET)
+#define CONFIG_ENV_OFFSET 0
+#endif
+
+static int __mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
{
- return *((uchar *)(gd->env_addr + index));
+ *env_addr = CONFIG_ENV_OFFSET;
+ return 0;
}
+int mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
+ __attribute__((weak, alias("__mmc_get_env_addr")));
int env_init(void)
{
/* use default */
- gd->env_addr = (ulong)&default_environment[0];
- gd->env_valid = 1;
+ gd->env_addr = (ulong)&default_environment[0];
+ gd->env_valid = 1;
return 0;
}
-int init_mmc_for_env(struct mmc *mmc)
+static int init_mmc_for_env(struct mmc *mmc)
{
if (!mmc) {
puts("No MMC card found\n");
if (mmc_init(mmc)) {
puts("MMC init failed\n");
- return -1;
+ return -1;
}
+#ifdef CONFIG_SYS_MMC_ENV_PART
+ if (CONFIG_SYS_MMC_ENV_PART != mmc->part_num) {
+ if (mmc_switch_part(CONFIG_SYS_MMC_ENV_DEV,
+ CONFIG_SYS_MMC_ENV_PART)) {
+ puts("MMC partition switch failed\n");
+ return -1;
+ }
+ }
+#endif
+
return 0;
}
-#ifdef CONFIG_CMD_SAVEENV
+static void fini_mmc_for_env(struct mmc *mmc)
+{
+#ifdef CONFIG_SYS_MMC_ENV_PART
+ if (CONFIG_SYS_MMC_ENV_PART != mmc->part_num)
+ mmc_switch_part(CONFIG_SYS_MMC_ENV_DEV,
+ mmc->part_num);
+#endif
+}
-inline int write_env(struct mmc *mmc, unsigned long size,
- unsigned long offset, const void *buffer)
+#ifdef CONFIG_CMD_SAVEENV
+static inline int write_env(struct mmc *mmc, unsigned long size,
+ unsigned long offset, const void *buffer)
{
uint blk_start, blk_cnt, n;
- blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
- blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len;
+ blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
+ blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len;
n = mmc->block_dev.block_write(CONFIG_SYS_MMC_ENV_DEV, blk_start,
blk_cnt, (u_char *)buffer);
int saveenv(void)
{
- env_t env_new;
+ ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
ssize_t len;
char *res;
struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
+ u32 offset;
+ int ret;
if (init_mmc_for_env(mmc))
return 1;
- res = (char *)&env_new.data;
- len = hexport('\0', &res, ENV_SIZE);
+ if (mmc_get_env_addr(mmc, &offset)) {
+ ret = 1;
+ goto fini;
+ }
+
+ res = (char *)&env_new->data;
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
- return 1;
+ ret = 1;
+ goto fini;
}
- env_new.crc = crc32(0, env_new.data, ENV_SIZE);
+
+ env_new->crc = crc32(0, &env_new->data[0], ENV_SIZE);
printf("Writing to MMC(%d)... ", CONFIG_SYS_MMC_ENV_DEV);
- if (write_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, (u_char *)&env_new)) {
+ if (write_env(mmc, CONFIG_ENV_SIZE, offset, (u_char *)env_new)) {
puts("failed\n");
- return 1;
+ ret = 1;
+ goto fini;
}
puts("done\n");
- return 0;
+ ret = 0;
+
+fini:
+ fini_mmc_for_env(mmc);
+ return ret;
}
#endif /* CONFIG_CMD_SAVEENV */
-inline int read_env(struct mmc *mmc, unsigned long size,
- unsigned long offset, const void *buffer)
+static inline int read_env(struct mmc *mmc, unsigned long size,
+ unsigned long offset, const void *buffer)
{
uint blk_start, blk_cnt, n;
- blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
- blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
+ blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
+ blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
n = mmc->block_dev.block_read(CONFIG_SYS_MMC_ENV_DEV, blk_start,
blk_cnt, (uchar *)buffer);
void env_relocate_spec(void)
{
#if !defined(ENV_IS_EMBEDDED)
+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
+ u32 offset;
+ int ret;
- if (init_mmc_for_env(mmc))
- return;
+ if (init_mmc_for_env(mmc)) {
+ ret = 1;
+ goto err;
+ }
- if (read_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, env_ptr))
- return use_default();
+ if (mmc_get_env_addr(mmc, &offset)) {
+ ret = 1;
+ goto fini;
+ }
- if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)
- return use_default();
+ if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf)) {
+ ret = 1;
+ goto fini;
+ }
- gd->env_valid = 1;
-#endif
-}
+ env_import(buf, 1);
+ ret = 0;
-#if !defined(ENV_IS_EMBEDDED)
-static void use_default()
-{
- set_default_env(NULL);
-}
+fini:
+ fini_mmc_for_env(mmc);
+err:
+ if (ret)
+ set_default_env(NULL);
#endif
+}
projects / karo-tx-uboot.git / blobdiff