diff mbox series

[v3,5/5] mmc-utils: add FFU mode 5 for firmware download using repeated CMD24 command to download FW bundle

Message ID 20241013205807.121932-6-beanhuo@iokpp.de
State New
Headers show
Series Add multiple FFU modes based on eMMC specification 6.6.18 for flexible firmware updates | expand

Commit Message

Bean Huo Oct. 13, 2024, 8:58 p.m. UTC 
From: Bean Huo <beanhuo@micron.com>

Add FFU mode 5 which enters FFU mode with CMD6, followed by repeated CMD24 commands to perform
single-block writes for the firmware download. After downloading all firmware data, CMD6 is issued
to exit FFU mode.

Signed-off-by: Bean Huo <beanhuo@micron.com>
---
 mmc.1      |  3 +++
 mmc.c      |  5 +++++
 mmc_cmds.c | 23 ++++++++++++++++++-----
 mmc_cmds.h |  1 +
 4 files changed, 27 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/mmc.1 b/mmc.1
index 5e147d7..d478992 100644
--- a/mmc.1
+++ b/mmc.1
@@ -201,6 +201,9 @@  Same as 'ffu', but uses CMD25+CMD12 Open-ended Multiple-block write to download
 .BI ffu4 " \fIimage\-file\-name\fR " " \fIdevice\fR " " [\fIchunk\-bytes\fR]
 Same as 'ffu', but uses CMD24 Single-block write to download, exiting FFU mode after each block is written.
 .TP
+.BI ffu5 " \fIimage\-file\-name\fR " " \fIdevice\fR " " [\fIchunk\-bytes\fR]
+Same as 'ffu', but uses CMD24 Single-block write for repeated downloads, remaining in FFU mode until completion.
+.TP
 .BI erase " " \fItype\fR " " \fIstart-address\fR " " \fIend\-address\fR " " \fIdevice\fR
 Send Erase CMD38 with specific argument to the device.
 .br
diff --git a/mmc.c b/mmc.c
index fd78f9b..3c74549 100644
--- a/mmc.c
+++ b/mmc.c
@@ -249,6 +249,11 @@  static struct Command commands[] = {
 		"Same as 'ffu', but uses CMD24 Single-block write to download, exiting FFU mode after each block written.\n",
 	  NULL
 	},
+	{ do_ffu5, -2,
+	  "ffu5", "<image name> <device> [chunk-bytes]\n"
+		"Same as 'ffu', but uses CMD24 Single-block write for repeated downloads, remaining in FFU mode until completion.\n",
+	  NULL
+	},
 	{ do_erase, -4,
 	"erase", "<type> " "<start address> " "<end address> " "<device>\n"
 		"Send Erase CMD38 with specific argument to the <device>\n\n"
diff --git a/mmc_cmds.c b/mmc_cmds.c
index 6290440..bdfaea7 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -2844,8 +2844,12 @@  static void set_ffu_download_cmd(struct mmc_ioc_multi_cmd *multi_cmd, __u8 *ext_
 		set_single_cmd(&multi_cmd->cmds[1], MMC_WRITE_BLOCK, 1, 1, arg);
 		mmc_ioc_cmd_set_data(multi_cmd->cmds[1], buf + offset);
 		fill_switch_cmd(&multi_cmd->cmds[2], EXT_CSD_MODE_CONFIG, EXT_CSD_NORMAL_MODE);
+	} else if (ffu_mode == 5) {
+		set_single_cmd(&multi_cmd->cmds[0], MMC_WRITE_BLOCK, 1, 1, arg);
+		mmc_ioc_cmd_set_data(multi_cmd->cmds[0], buf + offset);
 	}
 }
+
 static int enter_ffu_mode(int *dev_fd)
 {
        int ret;
@@ -2933,6 +2937,8 @@  static int do_ffu_download(int *dev_fd, __u8 *ext_csd, __u8 *fw_buf, off_t fw_si
 		num_of_cmds = 2;
 	else if (ffu_mode == 4)
 		num_of_cmds = 3; /* in FFU mode 4, mmc_ioc_multi_cmd contains 3 commands */
+	else if (ffu_mode == 5)
+		num_of_cmds = 1; /* in FFU mode 5, it is  single command mode  */
 
 	/* allocate maximum required */
 	multi_cmd = calloc(1, sizeof(struct mmc_ioc_multi_cmd) + num_of_cmds * sizeof(struct mmc_ioc_cmd));
@@ -2957,11 +2963,14 @@  do_retry:
 		/* prepare multi_cmd for FFU based on cmd to be used */
 		set_ffu_download_cmd(multi_cmd, ext_csd, bytes_per_loop, fw_buf, off, ffu_mode);
 
-		/* send ioctl with multi-cmd, download firmware bundle */
-		ret = ioctl(*dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
+		if (num_of_cmds > 1)
+			/* send ioctl with multi-cmd, download firmware bundle */
+			ret = ioctl(*dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
+		else
+			ret = ioctl(*dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[0]);
 
 		if (ret) {
-			perror("Multi-cmd ioctl");
+			perror("ioctl failed");
 			/*
 			 * In case multi-cmd ioctl failed before exiting from
 			 * ffu mode
@@ -3075,8 +3084,8 @@  static int __do_ffu(int nargs, char **argv, __u8 ffu_mode)
 		goto out;
 	}
 
-	if (ffu_mode ==4)
-		/* FFU mode 4 uses CMD24, the write is limited to single-block operations*/
+	if (ffu_mode ==4 || ffu_mode == 5)
+		/* FFU mode 4/5 uses CMD24, the write is limited to single-block operations*/
 		default_chunk = 512;
 
 	sect_done = do_ffu_download((int *)&dev_fd, ext_csd, fw_buf, fw_size, default_chunk, ffu_mode);
@@ -3165,6 +3174,10 @@  int do_ffu4(int nargs, char **argv) {
 	return __do_ffu(nargs, argv, 4);
 }
 
+int do_ffu5(int nargs, char **argv) {
+	return __do_ffu(nargs, argv, 5);
+}
+
 int do_general_cmd_read(int nargs, char **argv)
 {
 	int dev_fd;
diff --git a/mmc_cmds.h b/mmc_cmds.h
index 27dc6c4..d198de8 100644
--- a/mmc_cmds.h
+++ b/mmc_cmds.h
@@ -45,6 +45,7 @@  int do_ffu(int nargs, char **argv);
 int do_ffu2(int nargs, char **argv);
 int do_ffu3(int nargs, char **argv);
 int do_ffu4(int nargs, char **argv);
+int do_ffu5(int nargs, char **argv);
 int do_read_scr(int argc, char **argv);
 int do_read_cid(int argc, char **argv);
 int do_read_csd(int argc, char **argv);