diff mbox series

[v1,3/5] mmc-utils: Add new FFU mode using CMD25+CMD12 for Open-ended write download FW

Message ID 20241001203811.26279-4-beanhuo@iokpp.de (mailing list archive)
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. 1, 2024, 8:38 p.m. UTC 
From: Bean Huo <beanhuo@micron.com>

Introduced a new FFU mode leveraging CMD25+CMD12 for Open-ended Multiple-block write to
download the firmware bundle.

Signed-off-by: Bean Huo <beanhuo@micron.com>
---
 mmc.c     | 3 ++-
 mmc.h     | 1 +
 mmc_ffu.c | 9 ++++++++-
 3 files changed, 11 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/mmc.c b/mmc.c
index 0a22f2e..73b694d 100644
--- a/mmc.c
+++ b/mmc.c
@@ -234,7 +234,8 @@  static struct Command commands[] = {
 		"should be in decimal bytes and sector aligned.\n"
 		"[-m <ffu_mode>] Optional, provides five firmware bundle download command modes:\n"
 		" -m 1: Default mode (CMD6+CMD23+CMD25+CMD6 repeated), may exit FFU mode if the firmware size exceeds chunk size.\n"
-		" -m 2: FFU mode 2 (enter FFU mode, CMD23+CMD25 repeated, exit FFU mode), stays in FFU mode until firmware download completes.\n",
+		" -m 2: FFU mode 2 (enter FFU mode, CMD23+CMD25 repeated, exit FFU mode), stays in FFU mode until firmware download completes.\n"
+		" -m 3: FFU mode 3 (enter FFU mode, CMD25+CMD12 repeated, exit FFU mode), stays in FFU mode until firmware download completes.\n",
 	  NULL
 	},
 	{ do_erase, -4,
diff --git a/mmc.h b/mmc.h
index 6f1bf3e..78cc140 100644
--- a/mmc.h
+++ b/mmc.h
@@ -27,6 +27,7 @@ 
 #define MMC_BOOT_INITIATION_ARG		0xFFFFFFFA
 #define MMC_SWITCH		6	/* ac	[31:0] See below	R1b */
 #define MMC_SEND_EXT_CSD	8	/* adtc				R1  */
+#define MMC_STOP_TRANSMISSION	12	/* ac				R1b */
 #define MMC_SEND_STATUS		13	/* ac   [31:16] RCA        R1  */
 #define R1_SWITCH_ERROR   (1 << 7)  /* sx, c */
 #define MMC_SWITCH_MODE_WRITE_BYTE	0x03	/* Set target to value */
diff --git a/mmc_ffu.c b/mmc_ffu.c
index ac65130..239d3b0 100644
--- a/mmc_ffu.c
+++ b/mmc_ffu.c
@@ -48,6 +48,13 @@  static void set_ffu_download_cmd(struct mmc_ioc_multi_cmd *multi_cmd, __u8 *ext_
 		multi_cmd->cmds[0].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
 		set_single_cmd(&multi_cmd->cmds[1], MMC_WRITE_MULTIPLE_BLOCK, 1, bytes / 512, arg);
 		mmc_ioc_cmd_set_data(multi_cmd->cmds[1], buf + offset);
+	} else if (ffu_mode == 3) {
+		set_single_cmd(&multi_cmd->cmds[0], MMC_WRITE_MULTIPLE_BLOCK, 1, bytes / 512, arg);
+		multi_cmd->cmds[0].flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+		mmc_ioc_cmd_set_data(multi_cmd->cmds[0], buf + offset);
+		set_single_cmd(&multi_cmd->cmds[1], MMC_STOP_TRANSMISSION, 0, 0, 0);
+		multi_cmd->cmds[1].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
+
 	}
 }
 
@@ -231,7 +238,7 @@  int do_ffu(int nargs, char **argv)
 			break;
 		case 'm':
 			ffu_mode = atoi(optarg);
-			if (ffu_mode > 2) {
+			if (ffu_mode > 3) {
 				fprintf(stderr, "Unsupported ffu mode `%d'.\n", ffu_mode);
 				abort();
 			}