This change adds support to invoke Samsung eMMC 4.5 field firmware update
(ffu) process.
New command was added: "emmc45 ffu".
Samsung eMMC 4.5 FFU protocol is similar with eMMC 5.0 FFU without
MODE_OPERATION.
It uses the different EXT_CSD offset.
This patch depends on patch mmc-utils: Support-sending-eMMC-v5.0 committed
by Avi Shchislowski <avi.shchislow...@sandisk.com> and mmc: Support FFU for
Samsung eMMC v4.5 committed by Seunguk Shin <seunguk.s...@samsung.com>
---
mmc.c | 5 ++++
mmc.h | 1 +
mmc_cmds.c | 87
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
mmc_cmds.h | 1 +
4 files changed, 94 insertions(+)
diff --git a/mmc.c b/mmc.c
index 7234953..44aaf6d 100644
--- a/mmc.c
+++ b/mmc.c
@@ -115,6 +115,11 @@ static struct Command commands[] = {
"run eMMC 5.0 Field firmware update.\n.",
NULL
},
+ { do_emmc45_ffu, -2,
+ "emmc45 ffu", "<image path> <device>\n"
+ "run eMMC 4.5 Field firmware update for samsung.\n.",
+ NULL
+ },
{ 0, 0, 0, 0 }
};
diff --git a/mmc.h b/mmc.h
index 19eaaba..ca4b70b 100644
--- a/mmc.h
+++ b/mmc.h
@@ -86,6 +86,7 @@
#define FFU_DWONLOAD_OP 302
#define FFU_INSTALL_OP 303
+#define FFU_SAMSUNG45_OP 304
/*
* EXT_CSD field definitions
diff --git a/mmc_cmds.c b/mmc_cmds.c
index f667d10..17e50d8 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -1271,3 +1271,90 @@ exit:
return ret;
}
+static int ffu_execute(int fw_fd, int mmc_fd)
+{
+ int ret = 0;
+ struct mmc_ioc_cmd mmc_ioc_cmd;
+ char data_buff[MMC_IOC_MAX_BYTES];
+ int file_size;
+ int data_length;
+
+ memset(data_buff, 0, sizeof(data_buff));
+ /* get file size */
+ file_size = lseek(fw_fd, 0, SEEK_END);
+ if (file_size < 0) {
+ ret = -1;
+ perror("seek file error \n");
+ goto exit;
+ }
+
+ lseek(fw_fd, 0, SEEK_SET);
+
+ if (file_size > MMC_IOC_MAX_BYTES) {
+ ret = -1;
+ perror("firmware file size error \n");
+ goto exit;
+ } else {
+ /* Read FW data from file */
+ data_length = read(fw_fd, data_buff, file_size);
+ if (data_length == -1) {
+ ret = -1;
+ goto exit;
+ }
+ /* prepare and send ioctl */
+ memset(&mmc_ioc_cmd, 0, sizeof(mmc_ioc_cmd));
+ mmc_ioc_cmd.opcode = FFU_SAMSUNG45_OP;
+ mmc_ioc_cmd.blksz = CARD_BLOCK_SIZE;
+ mmc_ioc_cmd.blocks = (data_length + mmc_ioc_cmd.blksz - 1) /
+ mmc_ioc_cmd.blksz;
+ mmc_ioc_cmd.arg = 0;
+ mmc_ioc_cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
MMC_CMD_ADTC;
+ mmc_ioc_cmd.write_flag = 1;
+ mmc_ioc_cmd_set_data(mmc_ioc_cmd, data_buff);
+ ret = ioctl(mmc_fd, MMC_IOC_CMD, &mmc_ioc_cmd);
+
+ if (ret) {
+ perror("ioctl FW download");
+ goto exit;
+ }
+ }
+
+exit:
+
+ return ret;
+}
+
+int do_emmc45_ffu(int nargs, char **argv)
+{
+ int fd, fw_fd, ret;
+ char *device;
+
+ CHECK(nargs != 3, "Usage: ffu <image path> </path/to/mmcblkX> \n",
+ exit(1));
+
+ device = argv[2];
+ fd = open(device, O_RDWR);
+ if (fd < 0) {
+ perror("device open error \n");
+ exit(1);
+ }
+
+ /* open eMMC4.5 firmware image file */
+ fw_fd = open(argv[1], O_RDONLY);
+ if (fw_fd < 0) {
+ perror("open eMMC4.5 firmware file");
+ ret = -1;
+ goto exit;
+ }
+
+ ret = ffu_execute(fw_fd, fd);
+ if (ret)
+ goto exit;
+
+exit:
+ close(fd);
+ close(fw_fd);
+
+ return ret;
+}
+
diff --git a/mmc_cmds.h b/mmc_cmds.h
index 3ff3440..1ab9cd5 100644
--- a/mmc_cmds.h
+++ b/mmc_cmds.h
@@ -29,3 +29,4 @@ int do_status_get(int nargs, char **argv);
int do_enh_area_set(int nargs, char **argv);
int do_write_reliability_set(int nargs, char **argv);
int do_emmc50_ffu(int nargs, char **argv);
+int do_emmc45_ffu(int nargs, char **argv);
--
1.8.3.2
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