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From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH] kwbimage_v0: add support to detect and boot a mvebu v0 image
Date: Thu, 31 May 2018 23:28:17 +0200	[thread overview]
Message-ID: <20180531212817.32604-1-u.kleine-koenig@pengutronix.de> (raw)

The differences between v0 and v1 of the mvebu kwbimage are small enough
that the function to boot such an image can be shared between both
variants.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 arch/arm/mach-mvebu/kwbootimage.c | 11 +++++++++--
 common/filetype.c                 | 22 +++++++++++++++++-----
 include/filetype.h                |  1 +
 3 files changed, 27 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-mvebu/kwbootimage.c b/arch/arm/mach-mvebu/kwbootimage.c
index 8d364ceb7b31..e379d732fed6 100644
--- a/arch/arm/mach-mvebu/kwbootimage.c
+++ b/arch/arm/mach-mvebu/kwbootimage.c
@@ -10,7 +10,7 @@
 #include <asm/unaligned.h>
 #include <mach/common.h>
 
-static int do_bootm_kwbimage_v1(struct image_data *data)
+static int do_bootm_kwbimage_v0_v1(struct image_data *data)
 {
 	int fd, ret;
 	loff_t offset;
@@ -69,14 +69,21 @@ out_free:
 	return ret;
 }
 
+static struct image_handler image_handler_kwbimage_v0_handler = {
+	.name = "MVEBU kwbimage v0",
+	.bootm = do_bootm_kwbimage_v0_v1,
+	.filetype = filetype_kwbimage_v0,
+};
+
 static struct image_handler image_handler_kwbimage_v1_handler = {
 	.name = "MVEBU kwbimage v1",
-	.bootm = do_bootm_kwbimage_v1,
+	.bootm = do_bootm_kwbimage_v0_v1,
 	.filetype = filetype_kwbimage_v1,
 };
 
 static int mvebu_register_kwbimage_image_handler(void)
 {
+	register_image_handler(&image_handler_kwbimage_v0_handler);
 	register_image_handler(&image_handler_kwbimage_v1_handler);
 
 	return 0;
diff --git a/common/filetype.c b/common/filetype.c
index 444ec14cc4b6..bb807df721d9 100644
--- a/common/filetype.c
+++ b/common/filetype.c
@@ -65,7 +65,8 @@ static const struct filetype_str filetype_str[] = {
 	[filetype_exe] = { "MS-DOS executable", "exe" },
 	[filetype_mxs_bootstream] = { "Freescale MXS bootstream", "mxsbs" },
 	[filetype_socfpga_xload] = { "SoCFPGA prebootloader image", "socfpga-xload" },
-	[filetype_kwbimage_v1] = { "MVEBU kwbimage (v1)", "kwb" },
+	[filetype_kwbimage_v0] = { "MVEBU kwbimage (v0)", "kwb0" },
+	[filetype_kwbimage_v1] = { "MVEBU kwbimage (v1)", "kwb1" },
 	[filetype_android_sparse] = { "Android sparse image", "sparse" },
 	[filetype_arm64_linux_image] = { "ARM aarch64 Linux image", "aarch64-linux" },
 };
@@ -302,10 +303,21 @@ enum filetype file_detect_type(const void *_buf, size_t bufsize)
 	if ((buf8[0] == 0x5a || buf8[0] == 0x69 || buf8[0] == 0x78 ||
 	     buf8[0] == 0x8b || buf8[0] == 0x9c) &&
 	    buf8[0x1] == 0 && buf8[0x2] == 0 && buf8[0x3] == 0 &&
-	    buf8[0x8] == 1 && buf8[0x18] == 0 && buf8[0x1b] == 0 &&
-	    buf8[0x1c] == 0 && buf8[0x1d] == 0 &&
-	    (buf8[0x1e] == 0 || buf8[0x1e] == 1))
-		return filetype_kwbimage_v1;
+	    buf8[0x18] == 0 && buf8[0x1b] == 0 && buf8[0x1c] == 0) {
+		unsigned char sum = 0;
+		int i;
+
+		for (i = 0; i <= 0x1e; ++i)
+			sum += buf8[i];
+
+		if (sum == buf8[0x1f] && buf8[0x8] == 0)
+			return filetype_kwbimage_v0;
+
+		if (sum == buf8[0x1f] &&
+		    buf8[0x8] == 1 && buf8[0x1d] == 0 &&
+		    (buf8[0x1e] == 0 || buf8[0x1e] == 1))
+			return filetype_kwbimage_v1;
+	}
 
 	if (is_sparse_image(_buf))
 		return filetype_android_sparse;
diff --git a/include/filetype.h b/include/filetype.h
index 9986938ddb7c..d9963a24496c 100644
--- a/include/filetype.h
+++ b/include/filetype.h
@@ -38,6 +38,7 @@ enum filetype {
 	filetype_xz_compressed,
 	filetype_mxs_bootstream,
 	filetype_socfpga_xload,
+	filetype_kwbimage_v0,
 	filetype_kwbimage_v1,
 	filetype_android_sparse,
 	filetype_arm64_linux_image,
-- 
2.17.0


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             reply	other threads:[~2018-05-31 21:28 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-31 21:28 Uwe Kleine-König [this message]
2018-06-04  6:55 ` Sascha Hauer

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