+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2008-2011 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/* #define DEBUG */
#include <common.h>
#include <command.h>
-#include <environment.h>
+#include <env.h>
+#include <env_internal.h>
#include <fdtdec.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <memalign.h>
#include <mmc.h>
+#include <part.h>
#include <search.h>
#include <errno.h>
-#if defined(CONFIG_ENV_SIZE_REDUND) && \
- (CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
-#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
-#endif
-
-char *env_name_spec = "MMC";
-
-#ifdef ENV_IS_EMBEDDED
-env_t *env_ptr = &environment;
-#else /* ! ENV_IS_EMBEDDED */
-env_t *env_ptr;
-#endif /* ENV_IS_EMBEDDED */
+#define __STR(X) #X
+#define STR(X) __STR(X)
DECLARE_GLOBAL_DATA_PTR;
-#if !defined(CONFIG_ENV_OFFSET)
-#define CONFIG_ENV_OFFSET 0
+#if !defined(CONFIG_SYS_MMC_ENV_DEV)
+#define CONFIG_SYS_MMC_ENV_DEV 0
#endif
+__weak int mmc_get_env_dev(void)
+{
+ return CONFIG_SYS_MMC_ENV_DEV;
+}
+
#if CONFIG_IS_ENABLED(OF_CONTROL)
+static inline int mmc_offset_try_partition(const char *str, s64 *val)
+{
+ struct disk_partition info;
+ struct blk_desc *desc;
+ int len, i, ret;
+ char dev_str[4];
+
+ snprintf(dev_str, sizeof(dev_str), "%d", mmc_get_env_dev());
+ ret = blk_get_device_by_str("mmc", dev_str, &desc);
+ if (ret < 0)
+ return (ret);
+
+ for (i = 1;;i++) {
+ ret = part_get_info(desc, i, &info);
+ if (ret < 0)
+ return ret;
+
+ if (!strncmp((const char *)info.name, str, sizeof(str)))
+ break;
+ }
+
+ /* round up to info.blksz */
+ len = (CONFIG_ENV_SIZE + info.blksz - 1) & ~(info.blksz - 1);
+
+ /* use the top of the partion for the environment */
+ *val = (info.start + info.size - 1) - len / info.blksz;
+
+ return 0;
+}
+
static inline s64 mmc_offset(int copy)
{
- const char *propname = "u-boot,mmc-env-offset";
- s64 defvalue = CONFIG_ENV_OFFSET;
+ const struct {
+ const char *offset_redund;
+ const char *partition;
+ const char *offset;
+ } dt_prop = {
+ .offset_redund = "u-boot,mmc-env-offset-redundant",
+ .partition = "u-boot,mmc-env-partition",
+ .offset = "u-boot,mmc-env-offset",
+ };
+ s64 val = 0, defvalue;
+ const char *propname;
+ const char *str;
+ int err;
+
+ /* look for the partition in mmc CONFIG_SYS_MMC_ENV_DEV */
+ str = fdtdec_get_config_string(gd->fdt_blob, dt_prop.partition);
+ if (str) {
+ /* try to place the environment at end of the partition */
+ err = mmc_offset_try_partition(str, &val);
+ if (!err)
+ return val;
+ }
+
+ defvalue = CONFIG_ENV_OFFSET;
+ propname = dt_prop.offset;
#if defined(CONFIG_ENV_OFFSET_REDUND)
if (copy) {
- propname = "u-boot,mmc-env-offset-redundant";
defvalue = CONFIG_ENV_OFFSET_REDUND;
+ propname = dt_prop.offset_redund;
}
#endif
-
return fdtdec_get_config_int(gd->fdt_blob, propname, defvalue);
}
#else
return 0;
}
-__weak int mmc_get_env_dev(void)
-{
- return CONFIG_SYS_MMC_ENV_DEV;
-}
-
-int env_init(void)
-{
- /* use default */
- gd->env_addr = (ulong)&default_environment[0];
- gd->env_valid = 1;
-
- return 0;
-}
-
#ifdef CONFIG_SYS_MMC_ENV_PART
__weak uint mmc_get_env_part(struct mmc *mmc)
{
static const char *init_mmc_for_env(struct mmc *mmc)
{
if (!mmc)
- return "!No MMC card found";
+ return "No MMC card found";
-#ifdef CONFIG_BLK
+#if CONFIG_IS_ENABLED(BLK)
struct udevice *dev;
if (blk_get_from_parent(mmc->dev, &dev))
- return "!No block device";
+ return "No block device";
#else
if (mmc_init(mmc))
- return "!MMC init failed";
+ return "MMC init failed";
#endif
if (mmc_set_env_part(mmc))
- return "!MMC partition switch failed";
+ return "MMC partition switch failed";
return NULL;
}
#endif
}
-#ifdef CONFIG_CMD_SAVEENV
+#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_SPL_BUILD)
static inline int write_env(struct mmc *mmc, unsigned long size,
unsigned long offset, const void *buffer)
{
return (n == blk_cnt) ? 0 : -1;
}
-int saveenv(void)
+static int env_mmc_save(void)
{
ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
int dev = mmc_get_env_dev();
goto fini;
#ifdef CONFIG_ENV_OFFSET_REDUND
- if (gd->env_valid == 1)
+ if (gd->env_valid == ENV_VALID)
copy = 1;
#endif
goto fini;
}
- puts("done\n");
ret = 0;
#ifdef CONFIG_ENV_OFFSET_REDUND
- gd->env_valid = gd->env_valid == 2 ? 1 : 2;
+ gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
#endif
fini:
fini_mmc_for_env(mmc);
return ret;
}
-#endif /* CONFIG_CMD_SAVEENV */
+
+#if defined(CONFIG_CMD_ERASEENV)
+static inline int erase_env(struct mmc *mmc, unsigned long size,
+ unsigned long offset)
+{
+ uint blk_start, blk_cnt, n;
+ struct blk_desc *desc = mmc_get_blk_desc(mmc);
+
+ 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 = blk_derase(desc, blk_start, blk_cnt);
+ printf("%d blocks erased: %s\n", n, (n == blk_cnt) ? "OK" : "ERROR");
+
+ return (n == blk_cnt) ? 0 : 1;
+}
+
+static int env_mmc_erase(void)
+{
+ int dev = mmc_get_env_dev();
+ struct mmc *mmc = find_mmc_device(dev);
+ int ret, copy = 0;
+ u32 offset;
+ const char *errmsg;
+
+ errmsg = init_mmc_for_env(mmc);
+ if (errmsg) {
+ printf("%s\n", errmsg);
+ return 1;
+ }
+
+ if (mmc_get_env_addr(mmc, copy, &offset))
+ return CMD_RET_FAILURE;
+
+ ret = erase_env(mmc, CONFIG_ENV_SIZE, offset);
+
+#ifdef CONFIG_ENV_OFFSET_REDUND
+ copy = 1;
+
+ if (mmc_get_env_addr(mmc, copy, &offset))
+ return CMD_RET_FAILURE;
+
+ ret |= erase_env(mmc, CONFIG_ENV_SIZE, offset);
+#endif
+
+ return ret;
+}
+#endif /* CONFIG_CMD_ERASEENV */
+#endif /* CONFIG_CMD_SAVEENV && !CONFIG_SPL_BUILD */
static inline int read_env(struct mmc *mmc, unsigned long size,
unsigned long offset, const void *buffer)
}
#ifdef CONFIG_ENV_OFFSET_REDUND
-void env_relocate_spec(void)
+static int env_mmc_load(void)
{
#if !defined(ENV_IS_EMBEDDED)
struct mmc *mmc;
ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env1, 1);
ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env2, 1);
+ mmc_initialize(NULL);
+
mmc = find_mmc_device(dev);
errmsg = init_mmc_for_env(mmc);
if (errmsg) {
- ret = 1;
+ ret = -EIO;
goto err;
}
if (mmc_get_env_addr(mmc, 0, &offset1) ||
mmc_get_env_addr(mmc, 1, &offset2)) {
- ret = 1;
+ ret = -EIO;
goto fini;
}
read1_fail = read_env(mmc, CONFIG_ENV_SIZE, offset1, tmp_env1);
read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2);
- if (read1_fail && read2_fail)
- puts("*** Error - No Valid Environment Area found\n");
- else if (read1_fail || read2_fail)
- puts("*** Warning - some problems detected "
- "reading environment; recovered successfully\n");
-
- if (read1_fail && read2_fail) {
- errmsg = "!bad CRC";
- ret = 1;
- goto fini;
- } else if (!read1_fail && read2_fail) {
- gd->env_valid = 1;
- env_import((char *)tmp_env1, 1);
- } else if (read1_fail && !read2_fail) {
- gd->env_valid = 2;
- env_import((char *)tmp_env2, 1);
- } else {
- env_import_redund((char *)tmp_env1, (char *)tmp_env2);
- }
-
- ret = 0;
+ ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
+ read2_fail);
fini:
fini_mmc_for_env(mmc);
err:
if (ret)
- set_default_env(errmsg);
+ env_set_default(errmsg, 0);
+
#endif
+ return ret;
}
#else /* ! CONFIG_ENV_OFFSET_REDUND */
-void env_relocate_spec(void)
+static int env_mmc_load(void)
{
#if !defined(ENV_IS_EMBEDDED)
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
int ret;
int dev = mmc_get_env_dev();
const char *errmsg;
+ env_t *ep = NULL;
mmc = find_mmc_device(dev);
errmsg = init_mmc_for_env(mmc);
if (errmsg) {
- ret = 1;
+ ret = -EIO;
goto err;
}
if (mmc_get_env_addr(mmc, 0, &offset)) {
- ret = 1;
+ ret = -EIO;
goto fini;
}
if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf)) {
errmsg = "!read failed";
- ret = 1;
+ ret = -EIO;
goto fini;
}
- env_import(buf, 1);
- ret = 0;
+ ret = env_import(buf, 1);
+ if (!ret) {
+ ep = (env_t *)buf;
+ gd->env_addr = (ulong)&ep->data;
+ }
fini:
fini_mmc_for_env(mmc);
err:
if (ret)
- set_default_env(errmsg);
+ env_set_default(errmsg, 0);
#endif
+ return ret;
}
#endif /* CONFIG_ENV_OFFSET_REDUND */
+
+U_BOOT_ENV_LOCATION(mmc) = {
+ .location = ENVL_MMC,
+ ENV_NAME("MMC")
+ .load = env_mmc_load,
+#ifndef CONFIG_SPL_BUILD
+ .save = env_save_ptr(env_mmc_save),
+#if defined(CONFIG_CMD_ERASEENV)
+ .erase = env_mmc_erase,
+#endif
+#endif
+};