wandboard: Add update_sd_firmware support

This allow for easy update of firmware in the SD card from a running
U-Boot.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h
index bd3e727..0dc3286 100644 (file)
--- a/include/configs/wandboard.h
+++ b/include/configs/wandboard.h
@@ -47,6 +47,8 @@
 
 #undef CONFIG_CMD_IMLS
 
+#define CONFIG_CMD_SETEXPR
+
 #define CONFIG_BOOTDELAY               5
 
 #define CONFIG_SYS_MEMTEST_START       0x10000000
@@ -100,6 +102,20 @@
        "mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
        "mmcpart=" __stringify(CONFIG_SYS_MMC_ENV_PART) "\0" \
        "mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
+       "update_sd_firmware_filename=u-boot.imx\0" \
+       "update_sd_firmware=" \
+               "if test ${ip_dyn} = yes; then " \
+                       "setenv get_cmd dhcp; " \
+               "else " \
+                       "setenv get_cmd tftp; " \
+               "fi; " \
+               "if mmc dev ${mmcdev}; then "   \
+                       "if ${get_cmd} ${update_sd_firmware_filename}; then " \
+                               "setexpr fw_sz ${filesize} / 0x200; " \
+                               "setexpr fw_sz ${fw_sz} + 1; "  \
+                               "mmc write ${loadaddr} 0x2 ${fw_sz}; " \
+                       "fi; "  \
+               "fi\0" \
        "mmcargs=setenv bootargs console=${console},${baudrate} " \
                "root=${mmcroot}\0" \
        "loadbootscript=" \