mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
89 lines
2.3 KiB
Diff
89 lines
2.3 KiB
Diff
|
From fb2810b2c7209d4ed690e48e5bffa52d1af2eda3 Mon Sep 17 00:00:00 2001
|
||
|
|
From: David Woodhouse <dwmw2@infradead.org>
|
||
|
|
Date: Fri, 19 Jun 2020 22:57:04 +0100
|
||
|
|
Subject: [PATCH] env/fat.c: allow loading from a FAT partition on the MMC boot
|
||
|
|
device
|
||
|
|
|
||
|
|
I don't want to have to specify the device; only the partition.
|
||
|
|
|
||
|
|
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
|
||
|
|
---
|
||
|
|
env/Kconfig | 4 ++++
|
||
|
|
env/fat.c | 31 +++++++++++++++++++++++++++++--
|
||
|
|
2 files changed, 33 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/env/Kconfig b/env/Kconfig
|
||
|
|
index 0d6f559b39..a2020a8661 100644
|
||
|
|
--- a/env/Kconfig
|
||
|
|
+++ b/env/Kconfig
|
||
|
|
@@ -432,6 +432,10 @@ config ENV_FAT_DEVICE_AND_PART
|
||
|
|
If none, first valid partition in device D. If no
|
||
|
|
partition table then means device D.
|
||
|
|
|
||
|
|
+ If ENV_FAT_INTERFACE is set to "mmc" then device 'D' can be omitted,
|
||
|
|
+ leaving the string starting with a colon, and the boot device will
|
||
|
|
+ be used.
|
||
|
|
+
|
||
|
|
config ENV_FAT_FILE
|
||
|
|
string "Name of the FAT file to use for the environment"
|
||
|
|
depends on ENV_IS_IN_FAT
|
||
|
|
diff --git a/env/fat.c b/env/fat.c
|
||
|
|
index 1836556f36..1c32d17bd5 100644
|
||
|
|
--- a/env/fat.c
|
||
|
|
+++ b/env/fat.c
|
||
|
|
@@ -31,6 +31,33 @@
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
+#if defined(CMD_SAVEENV) || defined(CMD_LOADENV)
|
||
|
|
+__weak int mmc_get_env_dev(void)
|
||
|
|
+{
|
||
|
|
+ return CONFIG_SYS_MMC_ENV_DEV;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static char *env_fat_device_and_part(void)
|
||
|
|
+{
|
||
|
|
+#ifdef CONFIG_MMC
|
||
|
|
+ static char *part_str;
|
||
|
|
+
|
||
|
|
+ if (!part_str) {
|
||
|
|
+ part_str = CONFIG_ENV_FAT_DEVICE_AND_PART;
|
||
|
|
+ if (!strcmp(CONFIG_ENV_FAT_INTERFACE, "mmc")
|
||
|
|
+ && part_str[0] == ':') {
|
||
|
|
+ part_str = "0" CONFIG_ENV_FAT_DEVICE_AND_PART;
|
||
|
|
+ part_str[0] += mmc_get_env_dev();
|
||
|
|
+ }
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ return part_str;
|
||
|
|
+#else
|
||
|
|
+ return CONFIG_ENV_FAT_DEVICE_AND_PART;
|
||
|
|
+#endif
|
||
|
|
+}
|
||
|
|
+#endif
|
||
|
|
+
|
||
|
|
#ifdef CMD_SAVEENV
|
||
|
|
static int env_fat_save(void)
|
||
|
|
{
|
||
|
|
@@ -46,7 +73,7 @@ static int env_fat_save(void)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
|
||
|
|
- CONFIG_ENV_FAT_DEVICE_AND_PART,
|
||
|
|
+ env_fat_device_and_part(),
|
||
|
|
&dev_desc, &info, 1);
|
||
|
|
if (part < 0)
|
||
|
|
return 1;
|
||
|
|
@@ -93,7 +120,7 @@ static int env_fat_load(void)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE,
|
||
|
|
- CONFIG_ENV_FAT_DEVICE_AND_PART,
|
||
|
|
+ env_fat_device_and_part(),
|
||
|
|
&dev_desc, &info, 1);
|
||
|
|
if (part < 0)
|
||
|
|
goto err_env_relocate;
|
||
|
|
--
|
||
|
|
2.26.2
|
||
|
|
|