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authorWu, Josh <Josh.wu@atmel.com>2014-06-24 17:31:02 +0800
committerTom Rini <trini@ti.com>2014-07-07 19:43:01 -0400
commitbe354c1a214daeedb24d7716308432f188d0004c (patch)
treeb490df27d929a7609147c8da5eae7dd104d2a266
parent8038b497e742af2845523ed09b560bfc8cb42089 (diff)
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env_fat: use get_device_and_partition() during env save and load
Use get_device_and_partition() is better since: 1. It will call the device initialize function internally. So we can remove the mmc intialization code to save many lines. 2. It is used by fatls/fatload/fatwrite. So saveenv & load env should use it too. 3. It can parse the "D:P", "D", "D:", "D:auto" string to get correct device and partition information by run-time. Also we remove the FAT_ENV_DEVICE and FAT_ENV_PART. We use a string: FAT_ENV_DEVICE_AND_PART. For at91sam9m10g45ek, it is "0". That means use device 0 and if: a)device 0 has no partition table, use the whole device as a FAT file system. b)device 0 has partittion table, use the partition #1. Refer to the commit: 10a37fd7a4 for details of device & partition string. Signed-off-by: Josh Wu <josh.wu@atmel.com> Reviewed-by: Stephen Warren <swarren@nvidia.com>
-rw-r--r--common/env_fat.c86
-rw-r--r--include/configs/at91sam9m10g45ek.h8
2 files changed, 34 insertions, 60 deletions
diff --git a/common/env_fat.c b/common/env_fat.c
index aad0487..328c09d 100644
--- a/common/env_fat.c
+++ b/common/env_fat.c
@@ -38,39 +38,24 @@ int saveenv(void)
{
env_t env_new;
block_dev_desc_t *dev_desc = NULL;
- int dev = FAT_ENV_DEVICE;
- int part = FAT_ENV_PART;
+ disk_partition_t info;
+ int dev, part;
int err;
err = env_export(&env_new);
if (err)
return err;
-#ifdef CONFIG_MMC
- if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
- struct mmc *mmc = find_mmc_device(dev);
-
- if (!mmc) {
- printf("no mmc device at slot %x\n", dev);
- return 1;
- }
-
- mmc->has_init = 0;
- mmc_init(mmc);
- }
-#endif /* CONFIG_MMC */
-
- dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
- if (dev_desc == NULL) {
- printf("Failed to find %s%d\n",
- FAT_ENV_INTERFACE, dev);
+ part = get_device_and_partition(FAT_ENV_INTERFACE,
+ FAT_ENV_DEVICE_AND_PART,
+ &dev_desc, &info, 1);
+ if (part < 0)
return 1;
- }
- err = fat_register_device(dev_desc, part);
- if (err) {
- printf("Failed to register %s%d:%d\n",
- FAT_ENV_INTERFACE, dev, part);
+ dev = dev_desc->dev;
+ if (fat_set_blk_dev(dev_desc, &info) != 0) {
+ printf("\n** Unable to use %s %d:%d for saveenv **\n",
+ FAT_ENV_INTERFACE, dev, part);
return 1;
}
@@ -90,48 +75,33 @@ void env_relocate_spec(void)
{
char buf[CONFIG_ENV_SIZE];
block_dev_desc_t *dev_desc = NULL;
- int dev = FAT_ENV_DEVICE;
- int part = FAT_ENV_PART;
+ disk_partition_t info;
+ int dev, part;
int err;
-#ifdef CONFIG_MMC
- if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
- struct mmc *mmc = find_mmc_device(dev);
-
- if (!mmc) {
- printf("no mmc device at slot %x\n", dev);
- set_default_env(NULL);
- return;
- }
-
- mmc->has_init = 0;
- mmc_init(mmc);
- }
-#endif /* CONFIG_MMC */
-
- dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
- if (dev_desc == NULL) {
- printf("Failed to find %s%d\n",
- FAT_ENV_INTERFACE, dev);
- set_default_env(NULL);
- return;
- }
-
- err = fat_register_device(dev_desc, part);
- if (err) {
- printf("Failed to register %s%d:%d\n",
- FAT_ENV_INTERFACE, dev, part);
- set_default_env(NULL);
- return;
+ part = get_device_and_partition(FAT_ENV_INTERFACE,
+ FAT_ENV_DEVICE_AND_PART,
+ &dev_desc, &info, 1);
+ if (part < 0)
+ goto err_env_relocate;
+
+ dev = dev_desc->dev;
+ if (fat_set_blk_dev(dev_desc, &info) != 0) {
+ printf("\n** Unable to use %s %d:%d for loading the env **\n",
+ FAT_ENV_INTERFACE, dev, part);
+ goto err_env_relocate;
}
err = file_fat_read(FAT_ENV_FILE, (uchar *)&buf, CONFIG_ENV_SIZE);
if (err == -1) {
printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
- set_default_env(NULL);
- return;
+ goto err_env_relocate;
}
env_import(buf, 1);
+ return;
+
+err_env_relocate:
+ set_default_env(NULL);
}
diff --git a/include/configs/at91sam9m10g45ek.h b/include/configs/at91sam9m10g45ek.h
index 341b21d..db5d5ea 100644
--- a/include/configs/at91sam9m10g45ek.h
+++ b/include/configs/at91sam9m10g45ek.h
@@ -167,8 +167,12 @@
#elif CONFIG_SYS_USE_MMC
/* bootstrap + u-boot + env + linux in mmc */
#define FAT_ENV_INTERFACE "mmc"
-#define FAT_ENV_DEVICE 0
-#define FAT_ENV_PART 1
+/*
+ * We don't specify the part number, if device 0 has partition table, it means
+ * the first partition; it no partition table, then take whole device as a
+ * FAT file system.
+ */
+#define FAT_ENV_DEVICE_AND_PART "0"
#define FAT_ENV_FILE "uboot.env"
#define CONFIG_ENV_IS_IN_FAT
#define CONFIG_FAT_WRITE