[U-Boot] [PATCH 9/9] COMMON: MMC: Command to support eMMC booting

[Amar]

This patch adds commands to open, close and create partitions on eMMC

Signed-off-by: Amar <amarendra.xt at samsung.com>
---
 common/cmd_mmc.c |  101 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 100 insertions(+), 1 deletions(-)

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index 62a1c22..1fd6b94 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -248,6 +248,102 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 				curr_device, mmc->part_num);
 
 		return 0;
+	} else if (strcmp(argv[1], "open") == 0) {
+		int dev;
+		struct mmc *mmc;
+
+		if (argc == 2)
+			dev = curr_device;
+		else if (argc == 3)
+			dev = simple_strtoul(argv[2], NULL, 10);
+		else if (argc == 4)
+			return 1;
+
+		else
+			return CMD_RET_USAGE;
+
+		mmc = find_mmc_device(dev);
+		if (!mmc) {
+			printf("no mmc device at slot %x\n", dev);
+			return 1;
+		}
+
+		if (IS_SD(mmc)) {
+			printf("SD device cannot be opened/closed\n");
+			return 1;
+		}
+
+		if (!(mmc_boot_open(mmc))) {
+			printf("eMMC OPEN Success.!!\n");
+			printf("\t\t\t!!!Notice!!!\n");
+			printf("!You must close eMMC boot Partition"
+						"after all image writing!\n");
+			printf("!eMMC boot partition has continuity"
+						"at image writing time.!\n");
+			printf("!So, Do not close boot partition, Before,"
+						"all images is written.!\n");
+		} else {
+			printf("eMMC OPEN Failed.!!\n");
+		}
+		return 0;
+
+	} else if (strcmp(argv[1], "close") == 0) {
+		int dev;
+		struct mmc *mmc;
+
+		if (argc == 2)
+			dev = curr_device;
+		else if (argc == 3)
+			dev = simple_strtoul(argv[2], NULL, 10);
+		else if (argc == 4)
+			return 1;
+		else
+			return CMD_RET_USAGE;
+
+		mmc = find_mmc_device(dev);
+		if (!mmc) {
+			printf("no mmc device at slot %x\n", dev);
+			return 1;
+		}
+
+		if (IS_SD(mmc)) {
+			printf("SD device cannot be opened/closed\n");
+			return 1;
+		}
+
+		if (!(mmc_boot_close(mmc)))
+			printf("eMMC CLOSE Success.!!\n");
+		else
+			printf("eMMC CLOSE Failed.!!\n");
+
+		return 0;
+
+	} else if (strcmp(argv[1], "bootpart") == 0) {
+		int dev;
+		dev = simple_strtoul(argv[2], NULL, 10);
+
+		struct mmc *mmc = find_mmc_device(dev);
+		u32 bootsize = simple_strtoul(argv[3], NULL, 10);
+		u32 rpmbsize = simple_strtoul(argv[4], NULL, 10);
+
+		if (!mmc) {
+			printf("no mmc device at slot %x\n", dev);
+			return 1;
+		}
+
+		if (IS_SD(mmc)) {
+			printf("It is not a eMMC device\n");
+			return 1;
+		}
+
+		if (0 == mmc_boot_partition_size_change(mmc,
+						bootsize, rpmbsize)) {
+			printf("eMMC boot partition Size %d MB!!\n", bootsize);
+			printf("eMMC RPMB partition Size %d MB!!\n", rpmbsize);
+		} else {
+			printf("eMMC boot partition Size change Failed.!!\n");
+		}
+		return 0;
 	}
 
 	if (strcmp(argv[1], "read") == 0)
@@ -318,5 +414,8 @@ U_BOOT_CMD(
 	"mmc rescan\n"
 	"mmc part - lists available partition on current mmc device\n"
 	"mmc dev [dev] [part] - show or set current mmc device [partition]\n"
-	"mmc list - lists available devices");
+	"mmc list - lists available devices\n"
+	"mmc open <device num> - opens the specified device\n"
+	"mmc close <device num> - closes the specified device\n"
+	"mmc bootpart <device num> <boot part size MB> <RPMB part size MB>\n");
 #endif
-- 
1.7.0.4