[U-Boot] [PATCH V4 9/9] COMMON: MMC: Command to support EMMC booting and to

[Amar]

This patch adds commands to open, close and resize boot partitions on EMMC.

Changes from V1:
	1)Combined the common piece of code between 'open' and 'close'
	operations.

Changes from V2:
	1)Updation of commit message and resubmition of proper patch set.

Changes from V3:
        No change.

Signed-off-by: Amar <amarendra.xt at samsung.com>
---
 common/cmd_mmc.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 83 insertions(+), 1 deletion(-)

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index 7dacd51..1dabb5b 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -248,6 +248,84 @@ 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) ||
+			(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
+			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 (strcmp(argv[1], "open") == 0) {
+			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"
+					" images are written\n");
+				printf("!EMMC boot partition"
+					" has continuity at"
+					" image writing time.\n");
+				printf("!So, Do not close boot"
+					" partition, Before, all"
+					" images are written.\n");
+				return 0;
+			} else {
+				printf("EMMC OPEN Failed.\n");
+				return 1;
+			}
+		}
+
+		if (strcmp(argv[1], "close") == 0) {
+			if (!(mmc_boot_close(mmc))) {
+				printf("EMMC CLOSE Success.\n");
+				return 0;
+			} else {
+				printf("EMMC CLOSE Failed.\n");
+				return 1;
+			}
+		}
+	} else if (strcmp(argv[1], "bootpart") == 0) {
+		int dev;
+		dev = simple_strtoul(argv[2], NULL, 10);
+
+		u32 bootsize = simple_strtoul(argv[3], NULL, 10);
+		u32 rpmbsize = simple_strtoul(argv[4], NULL, 10);
+		struct mmc *mmc = find_mmc_device(dev);
+		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);
+			return 0;
+		} else {
+			printf("EMMC boot partition Size change Failed.\n");
+			return 1;
+		}
 	}
 
 	state = MMC_INVALID;
@@ -317,5 +395,9 @@ 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"
+	" - change sizes of boot and RPMB partions of specified device\n");
 #endif
-- 
1.8.0