km/common: add support for second flash
Add support for a second flash.
By default, a single flash chip is set up:
- called 'boot'
- mtd name for ubi 'ubi0'
MTDIDS and MTDPARTS may be overwritten to add a second flash.
The 'ubiattach' command is featured in two versions:
- if CONFIG_KM_UBI_PARTITION_NAME_APP is not defined:
this is the version as up to now
- if CONFIG_KM_UBI_PARTITION_NAME_APP is defined:
a check on 'actual_bank' will be done to determine the flash to boot
from.
Use CONFIG_KM_UBI_PARTITION_NAME_BOOT and
CONFIG_KM_UBI_PARTITION_NAME_APP to define where to put the bootloader
and the applications.
Example:
In the board config do:
... snip ...
"boot:" \
"768k(u-boot)," \
"128k(env)," \
"128k(envred)," \
"-(" CONFIG_KM_UBI_PARTITION_NAME_BOOT ");" \
"app:" \
"-(" CONFIG_KM_UBI_PARTITION_NAME_APP ");"
... snap ...
You may also need to enable the second flash:
... snip ...
/* additional featured for COGE5 */
... snap ...
Signed-off-by: Andreas Huber <andreas.huber@keymile.com>
cc: Kim Phillips <kim.phillips@freescale.com>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/km/keymile-common.h b/include/configs/km/keymile-common.h
index 7a01705..4f606a0 100644
--- a/include/configs/km/keymile-common.h
+++ b/include/configs/km/keymile-common.h
@@ -126,12 +126,29 @@
"netdev=eth0\0"
#endif
-#ifndef CONFIG_KM_UBI_PARTITION_NAME
-#define CONFIG_KM_UBI_PARTITION_NAME "ubi0"
-#endif
-#ifndef CONFIG_KM_UBI_LINUX_MTD_NAME
-#define CONFIG_KM_UBI_LINUX_MTD_NAME "ubi0"
-#endif
+#ifndef CONFIG_KM_UBI_PARTITION_NAME_BOOT
+#define CONFIG_KM_UBI_PARTITION_NAME_BOOT "ubi0"
+#endif /* CONFIG_KM_UBI_PARTITION_NAME_BOOT */
+
+#ifndef CONFIG_KM_UBI_PARTITION_NAME_APP
+/* one flash chip only called boot */
+/* boot: CONFIG_KM_UBI_PARTITION_NAME_BOOT */
+# define CONFIG_KM_UBI_LINUX_MTD \
+ "ubi.mtd=" CONFIG_KM_UBI_PARTITION_NAME_BOOT
+# define CONFIG_KM_DEV_ENV_FLASH_BOOT_UBI \
+ "ubiattach=ubi part " CONFIG_KM_UBI_PARTITION_NAME_BOOT "\0"
+#else /* CONFIG_KM_UBI_PARTITION_NAME_APP */
+/* two flash chips called boot and app */
+/* boot: CONFIG_KM_UBI_PARTITION_NAME_BOOT */
+/* app: CONFIG_KM_UBI_PARTITION_NAME_APP */
+# define CONFIG_KM_UBI_LINUX_MTD \
+ "ubi.mtd=" CONFIG_KM_UBI_PARTITION_NAME_BOOT " " \
+ "ubi.mtd=" CONFIG_KM_UBI_PARTITION_NAME_APP
+# define CONFIG_KM_DEV_ENV_FLASH_BOOT_UBI \
+ "ubiattach=if test ${boot_bank} -eq 0; then; " \
+ "ubi part " CONFIG_KM_UBI_PARTITION_NAME_BOOT "; else; " \
+ "ubi part " CONFIG_KM_UBI_PARTITION_NAME_APP "; fi\0"
+#endif /* CONFIG_KM_UBI_PARTITION_NAME_APP */
#define xstr(s) str(s)
#define str(s) #s
@@ -173,7 +190,7 @@
" console=" CONFIG_KM_CONSOLE_TTY ",${baudrate}" \
" mem=${kernelmem} init=${init}" \
" phram.phram=phvar,${varaddr}," xstr(CONFIG_KM_PHRAM) \
- " ubi.mtd=" CONFIG_KM_UBI_LINUX_MTD_NAME " " \
+ " " CONFIG_KM_UBI_LINUX_MTD " " \
CONFIG_KM_DEF_BOOT_ARGS_CPU \
"\0" \
"addpanic=" \
@@ -199,10 +216,9 @@
#define CONFIG_KM_DEF_ENV_FLASH_BOOT \
"cramfsaddr=" xstr(CONFIG_KM_CRAMFS_ADDR) "\0" \
"cramfsloadkernel=cramfsload ${load_addr_r} uImage\0" \
- "ubiattach=ubi part " CONFIG_KM_UBI_PARTITION_NAME "\0" \
"ubicopy=ubi read "xstr(CONFIG_KM_CRAMFS_ADDR) \
" bootfs${boot_bank}\0" \
- ""
+ CONFIG_KM_DEV_ENV_FLASH_BOOT_UBI
/*
* constants