ARM: uniphier: add sdscript, sdboot, sdupdate environment variables

Add handy macros:

  - sdscript: source boot.scr in the file system of the SD media
  - sdboot  : boot the kernel using the images in the file system
              of the SD media
  - sdscript: update the boot firmware in the SD media
              (in raw block sectors)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1 files changed, 23 insertions, 4 deletions

diff --git a/arch/arm/mach-uniphier/mmc-first-dev.c b/arch/arm/mach-uniphier/mmc-first-dev.c
index 149e662..e2f4f4e 100644
--- a/arch/arm/mach-uniphier/mmc-first-dev.c
+++ b/arch/arm/mach-uniphier/mmc-first-dev.c
@@ -9,13 +9,14 @@
 #include <mmc.h>
 #include <linux/errno.h>
 
-static int find_first_mmc_device(void)
+static int find_first_mmc_device(bool is_sd)
 {
 	struct mmc *mmc;
 	int i;
 
 	for (i = 0; (mmc = find_mmc_device(i)); i++) {
-		if (!mmc_init(mmc) && IS_MMC(mmc))
+		if (!mmc_init(mmc) &&
+		    ((is_sd && IS_SD(mmc)) || (!is_sd && IS_MMC(mmc))))
 			return i;
 	}
 
@@ -24,14 +25,14 @@ static int find_first_mmc_device(void)
 
 int mmc_get_env_dev(void)
 {
-	return find_first_mmc_device();
+	return find_first_mmc_device(false);
 }
 
 static int do_mmcsetn(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	int dev;
 
-	dev = find_first_mmc_device();
+	dev = find_first_mmc_device(false);
 	if (dev < 0)
 		return CMD_RET_FAILURE;
 
@@ -44,3 +45,21 @@ U_BOOT_CMD(
 	"Set the first MMC (not SD) dev number to \"mmc_first_dev\" environment",
 	""
 );
+
+static int do_sdsetn(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int dev;
+
+	dev = find_first_mmc_device(true);
+	if (dev < 0)
+		return CMD_RET_FAILURE;
+
+	env_set_ulong("sd_first_dev", dev);
+	return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+	sdsetn,	1,	1,	do_sdsetn,
+	"Set the first SD dev number to \"sd_first_dev\" environment",
+	""
+);