linux-kernel - [PATCH 2/7] mmc-utils: treat FIRMWARE_VERSION as binary field instead of string

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Message-Id: <e2b6431104a6a822840d4e7b984d7aa23048a0af.1539103468.git.jamesnuss@nanometrics.ca>
Date:   Tue,  9 Oct 2018 13:31:06 -0400
From:   James Nuss <jamesnuss@...ometrics.ca>
To:     linux-mmc@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 2/7] mmc-utils: treat FIRMWARE_VERSION as binary field instead of string

The FIRMWARE_VERSION field is 8-bytes in size and contains non-printable
characters.

Treat this field as binary and print individual byte values in hex

Signed-off-by: James Nuss <jamesnuss@...ometrics.ca>
---
 mmc.h      |  9 ++++++++-
 mmc_cmds.c | 11 +++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/mmc.h b/mmc.h
index 5d8a7e3..86e209a 100644
--- a/mmc.h
+++ b/mmc.h
@@ -59,7 +59,14 @@
 #define EXT_CSD_OPTIMAL_READ_SIZE	266	/* RO */
 #define EXT_CSD_OPTIMAL_WRITE_SIZE	265	/* RO */
 #define EXT_CSD_OPTIMAL_TRIM_UNIT_SIZE	264	/* RO */
-#define EXT_CSD_FIRMWARE_VERSION	254	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_7	261	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_6	260	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_5	259	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_4	258	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_3	257	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_2	256	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_1	255	/* RO */
+#define EXT_CSD_FIRMWARE_VERSION_0	254	/* RO */
 #define EXT_CSD_CACHE_SIZE_3		252
 #define EXT_CSD_CACHE_SIZE_2		251
 #define EXT_CSD_CACHE_SIZE_1		250
diff --git a/mmc_cmds.c b/mmc_cmds.c
index 97ea111..45aa4c0 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -1758,8 +1758,15 @@ int do_read_extcsd(int nargs, char **argv)
 	}
 
 	if (ext_csd_rev >= 7) {
-		printf("eMMC Firmware Version: %s\n",
-			(char*)&ext_csd[EXT_CSD_FIRMWARE_VERSION]);
+		printf("Firmware Version: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_7],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_6],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_5],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_4],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_3],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_2],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_1],
+			ext_csd[EXT_CSD_FIRMWARE_VERSION_0]);
 		printf("eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x%02x\n",
 			ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]);
 		printf("eMMC Life Time Estimation B [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]: 0x%02x\n",
-- 
2.7.4


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