From c1c564af5200dd50bfa4a2f2e9a6c73d10de691c Mon Sep 17 00:00:00 2001 From: "Andrew F. Davis" Date: Tue, 16 Jul 2019 09:49:38 -0400 Subject: [PATCH] arm: mach-keystone: Use appended original image size in image processing When an image is signed/encrypted on K2 devices the image may get padded to meet alignment requirements for the signature/encryption type. The original size is appended as 4 bytes little-endian to the end of the final image. Normally the trailing extra bytes are ignored and so restoring the exact original size is not important. In the case of initrd the original size is important as the kernel uses it to look for additional filesystem data and can do the wrong thing when the size is not correct. Read off the original size and report it back from the image post processing stage. Signed-off-by: Andrew F. Davis Reviewed-by: Lokesh Vutla --- arch/arm/mach-keystone/mon.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-keystone/mon.c b/arch/arm/mach-keystone/mon.c index 51af028..cc2ec88 100644 --- a/arch/arm/mach-keystone/mon.c +++ b/arch/arm/mach-keystone/mon.c @@ -1,11 +1,11 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * K2HK: secure kernel command file + * K2x: Secure commands file * - * (C) Copyright 2012-2014 - * Texas Instruments Incorporated, + * Copyright (C) 2012-2019 Texas Instruments Incorporated - http://www.ti.com/ */ +#include #include #include #include @@ -120,9 +120,9 @@ void board_fit_image_post_process(void **p_image, size_t *p_size) /* * Overwrite the image headers after authentication * and decryption. Update size to reflect removal - * of header. + * of header and restore original file size. */ - *p_size -= KS2_HS_SEC_HEADER_LEN; + *p_size = get_unaligned_le32(image + (*p_size - 4)); memcpy(image, image + KS2_HS_SEC_HEADER_LEN, *p_size); /* -- 2.7.4