From: "Marek Behún" <kabel@kernel.org>
To: Stefan Roese <sr@denx.de>
Cc: u-boot@lists.denx.de, "Pali Rohár" <pali@kernel.org>,
"Marek Behún" <marek.behun@nic.cz>
Subject: [PATCH u-boot-marvell v2 5/9] arm: mvebu: Check for kwbimage data checksum
Date: Fri, 26 Nov 2021 15:37:34 +0100 [thread overview]
Message-ID: <20211126143738.23830-6-kabel@kernel.org> (raw)
In-Reply-To: <20211126143738.23830-1-kabel@kernel.org>
From: Pali Rohár <pali@kernel.org>
Last 4 bytes of kwbimage boot image is checksum. Verify it via the new
spl_check_board_image() function which is called by U-Boot SPL after
loading kwbimage.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
---
Changes since v1:
- changed uint32_t to u32
---
arch/arm/mach-mvebu/spl.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c
index 4af52c626c..af9e45ac7a 100644
--- a/arch/arm/mach-mvebu/spl.c
+++ b/arch/arm/mach-mvebu/spl.c
@@ -100,6 +100,33 @@ u32 spl_mmc_boot_mode(const u32 boot_device)
}
#endif
+static u32 checksum32(void *start, u32 len)
+{
+ u32 csum = 0;
+ u32 *p = start;
+
+ while (len > 0) {
+ csum += *p++;
+ len -= sizeof(u32);
+ };
+
+ return csum;
+}
+
+int spl_check_board_image(struct spl_image_info *spl_image,
+ const struct spl_boot_device *bootdev)
+{
+ u32 csum = *(u32 *)(spl_image->load_addr + spl_image->size - 4);
+
+ if (checksum32((void *)spl_image->load_addr,
+ spl_image->size - 4) != csum) {
+ printf("ERROR: Invalid data checksum in kwbimage\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
int spl_parse_board_header(struct spl_image_info *spl_image,
const struct spl_boot_device *bootdev,
const void *image_header, size_t size)
--
2.32.0
next prev parent reply other threads:[~2021-11-26 14:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-26 14:37 [PATCH u-boot-marvell v2 0/9] More verifications for kwbimage in SPL Marek Behún
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 1/9] arm: mvebu: Check that kwbimage offset and blocksize are valid Marek Behún
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 2/9] SPL: Add struct spl_boot_device parameter into spl_parse_board_header() Marek Behún
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 3/9] arm: mvebu: Check that kwbimage blockid matches boot mode Marek Behún
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 4/9] SPL: Add support for checking board / BootROM specific image types Marek Behún
2021-11-26 14:37 ` Marek Behún [this message]
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 6/9] arm: mvebu: spl: Print srcaddr in error message Marek Behún
2021-11-30 6:20 ` Stefan Roese
2021-12-14 11:10 ` Pali Rohár
2021-12-14 13:11 ` Marek Behún
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 7/9] arm: mvebu: spl: Use preferred types u8/u16/u32 instead of uintN_t Marek Behún
2021-11-30 6:20 ` Stefan Roese
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 8/9] arm: mvebu: spl: Use IS_ENABLED() instead of #ifdef where possible Marek Behún
2021-11-30 6:22 ` Stefan Roese
2021-12-14 9:36 ` Pali Rohár
2021-12-14 9:45 ` Marek Behún
2021-12-14 11:12 ` Pali Rohár
2021-12-14 12:45 ` Marek Behún
2021-12-14 12:48 ` Stefan Roese
2021-12-14 13:01 ` Marek Behún
2021-12-16 18:16 ` Pali Rohár
2021-12-16 22:09 ` Marek Behún
2021-12-16 22:17 ` Marek Behún
2021-11-26 14:37 ` [PATCH u-boot-marvell v2 9/9] arm: mvebu: spl: Fix 100 column exceeds Marek Behún
2021-11-30 6:22 ` Stefan Roese
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