From patchwork Mon Jan 8 17:36:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan O'Donoghue X-Patchwork-Id: 856986 X-Patchwork-Delegate: sbabic@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="ASjPIRmb"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 3zFjXW2pPZz9s72 for ; Tue, 9 Jan 2018 04:52:27 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 0A70FC21F88; Mon, 8 Jan 2018 17:40:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 2A74CC21FE1; Mon, 8 Jan 2018 17:37:39 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 064F9C21FC5; Mon, 8 Jan 2018 17:36:58 +0000 (UTC) Received: from mail-wm0-f68.google.com (mail-wm0-f68.google.com [74.125.82.68]) by lists.denx.de (Postfix) with ESMTPS id B32C2C21FBF for ; Mon, 8 Jan 2018 17:36:54 +0000 (UTC) Received: by mail-wm0-f68.google.com with SMTP id g75so15728706wme.0 for ; Mon, 08 Jan 2018 09:36:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=EvOW9AnWvFja+KH57XFeHCqYmUyZa4E60vY9BoKFZBs=; b=ASjPIRmbmucoVIPqctd+QuCSQ7OD37PupcGwwNW+23lcfoL7Qsc27OQQgJh9tOzoF4 qM8xY09oaE7mxA3M/Lk8rk/lrJ9Evkww/L0vvCZKOmH+hcNGz+sM+Bz42IINmEtWG2mn rz9l41LXEvEx2Z3IcuC1o1VKajdIpkO+NhJmM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=EvOW9AnWvFja+KH57XFeHCqYmUyZa4E60vY9BoKFZBs=; b=EUILQK3/dnFUCzYiZu7riCY2RrKnlo+mEeA5o9ZYieHKt4rvwjUGZXJA2VWHmHwx8m qV2/q4BxxkMCUq119EQtZ3ZNQK7wcY5AS/v5QKfIlbFJbjnFRgZGfByYdu2mxHhfsDvc yRS2Ioh4Ky8DZqlVwB5iGkbRJpuVkw85tGXnkEn5Kopst0rbo/VxK4IOp71G8aFgt2Xu B/hnYhyVgfvI1cN3z3sI4s5ISdVa3R74v9iQNPVVKyEjLsC9PWHxh+KIsANQkfG1dY02 yCguwczGTOlkJa8fu9xozbN2C4gYuvJwV5xVzk+DEHmlX7gIsD2aydOLW09p+4RkGaTI 4DFw== X-Gm-Message-State: AKGB3mI6I8uNvjsC6HeRydiZNNuCLfNn83ZhuE0uHx8bDB1PQm5uLXCI mTjAo6SSTXEGxR4FfVvCffozeGWSEx4= X-Google-Smtp-Source: ACJfBouyuZYDC+DcHOnFhnMCfURfhDe4Ojpq7UWQhYqPjv+0s1RWsYCGQhRDgVdfGep1ldVc54jmJA== X-Received: by 10.80.217.76 with SMTP id u12mr17366190edj.171.1515433014054; Mon, 08 Jan 2018 09:36:54 -0800 (PST) Received: from localhost.localdomain ([109.255.42.2]) by smtp.gmail.com with ESMTPSA id a38sm7160033edf.3.2018.01.08.09.36.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 08 Jan 2018 09:36:53 -0800 (PST) From: Bryan O'Donoghue To: u-boot@lists.denx.de, brenomatheus@gmail.com Date: Mon, 8 Jan 2018 17:36:24 +0000 Message-Id: <1515433001-13857-8-git-send-email-bryan.odonoghue@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1515433001-13857-1-git-send-email-bryan.odonoghue@linaro.org> References: <1515433001-13857-1-git-send-email-bryan.odonoghue@linaro.org> Cc: Fabio Estevam Subject: [U-Boot] [PATCH v5 07/24] arm: imx: hab: Fix authenticate_image input parameters X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" u-boot command "hab_auth_img" tells a user that it takes - addr - image hex address - offset - hex offset of IVT in the image but in fact the callback hab_auth_img makes to authenticate_image treats the second 'offset' parameter as an image length. Furthermore existing code requires the IVT header to be appended to the end of the image which is not actually a requirement of HABv4. This patch fixes this situation by 1: Adding a new parameter to hab_auth_img - addr : image hex address - length : total length of the image - offset : offset of IVT from addr 2: Updates the existing call into authenticate_image() in arch/arm/mach-imx/spl.c:jump_to_image_no_args() to pass addr, length and IVT offset respectively. This allows then hab_auth_img to actually operate the way it was specified in the help text and should still allow existing code to work. It has the added advantage that the IVT header doesn't have to be appended to an image given to HAB - it can be prepended for example. Note prepending the IVT is what u-boot will do when making an IVT for the BootROM. It should be possible for u-boot properly authenticate images made by mkimage via HAB. This patch is the first step in making that happen subsequent patches will focus on removing hard-coded offsets to the IVT, which again is not mandated to live at the end of a .imx image. Signed-off-by: Bryan O'Donoghue Cc: Stefano Babic Cc: Fabio Estevam Cc: Peng Fan Cc: Albert Aribaud Cc: Sven Ebenfeld Cc: George McCollister Cc: Breno Matheus Lima --- arch/arm/include/asm/mach-imx/hab.h | 3 +- arch/arm/mach-imx/hab.c | 73 +++++++++++-------------------------- arch/arm/mach-imx/spl.c | 35 +++++++++++++++++- 3 files changed, 57 insertions(+), 54 deletions(-) diff --git a/arch/arm/include/asm/mach-imx/hab.h b/arch/arm/include/asm/mach-imx/hab.h index 91dda42..b2a8031 100644 --- a/arch/arm/include/asm/mach-imx/hab.h +++ b/arch/arm/include/asm/mach-imx/hab.h @@ -148,6 +148,7 @@ typedef void hapi_clock_init_t(void); /* ----------- end of HAB API updates ------------*/ -int authenticate_image(uint32_t ddr_start, uint32_t image_size); +int authenticate_image(uint32_t ddr_start, uint32_t image_size, + uint32_t ivt_offset); #endif diff --git a/arch/arm/mach-imx/hab.c b/arch/arm/mach-imx/hab.c index 039a017..2a40d06 100644 --- a/arch/arm/mach-imx/hab.c +++ b/arch/arm/mach-imx/hab.c @@ -78,37 +78,6 @@ (is_soc_type(MXC_SOC_MX7ULP) ? 0x80000000 : \ (is_soc_type(MXC_SOC_MX7) ? 0x2000000 : 0x2)) -/* - * +------------+ 0x0 (DDR_UIMAGE_START) - - * | Header | | - * +------------+ 0x40 | - * | | | - * | | | - * | | | - * | | | - * | Image Data | | - * . | | - * . | > Stuff to be authenticated ----+ - * . | | | - * | | | | - * | | | | - * +------------+ | | - * | | | | - * | Fill Data | | | - * | | | | - * +------------+ Align to ALIGN_SIZE | | - * | IVT | | | - * +------------+ + IVT_SIZE - | - * | | | - * | CSF DATA | <---------------------------------------------------------+ - * | | - * +------------+ - * | | - * | Fill Data | - * | | - * +------------+ + CSF_PAD_SIZE - */ - static bool is_hab_enabled(void); #if !defined(CONFIG_SPL_BUILD) @@ -361,20 +330,22 @@ int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) static int do_authenticate_image(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - ulong addr, ivt_offset; + ulong addr, length, ivt_offset; int rcode = 0; - if (argc < 3) + if (argc < 4) return CMD_RET_USAGE; addr = simple_strtoul(argv[1], NULL, 16); - ivt_offset = simple_strtoul(argv[2], NULL, 16); + length = simple_strtoul(argv[2], NULL, 16); + ivt_offset = simple_strtoul(argv[3], NULL, 16); - rcode = authenticate_image(addr, ivt_offset); + rcode = authenticate_image(addr, length, ivt_offset); if (rcode == 0) rcode = CMD_RET_SUCCESS; else rcode = CMD_RET_FAILURE; + return rcode; } @@ -385,10 +356,11 @@ U_BOOT_CMD( ); U_BOOT_CMD( - hab_auth_img, 3, 0, do_authenticate_image, + hab_auth_img, 4, 0, do_authenticate_image, "authenticate image via HAB", - "addr ivt_offset\n" + "addr length ivt_offset\n" "addr - image hex address\n" + "length - image hex length\n" "ivt_offset - hex offset of IVT in the image" ); @@ -411,11 +383,12 @@ static bool is_hab_enabled(void) return (reg & IS_HAB_ENABLED_BIT) == IS_HAB_ENABLED_BIT; } -int authenticate_image(uint32_t ddr_start, uint32_t image_size) +int authenticate_image(uint32_t ddr_start, uint32_t image_size, + uint32_t ivt_offset) { uint32_t load_addr = 0; size_t bytes; - ptrdiff_t ivt_offset = 0; + uint32_t ivt_addr = 0; int result = 1; ulong start; hab_rvt_authenticate_image_t *hab_rvt_authenticate_image; @@ -441,24 +414,18 @@ int authenticate_image(uint32_t ddr_start, uint32_t image_size) goto hab_caam_clock_disable; } - /* If not already aligned, Align to ALIGN_SIZE */ - ivt_offset = (image_size + ALIGN_SIZE - 1) & - ~(ALIGN_SIZE - 1); - + /* Calculate IVT address header */ + ivt_addr = ddr_start + ivt_offset; start = ddr_start; - bytes = ivt_offset + IVT_SIZE + CSF_PAD_SIZE; + bytes = image_size; #ifdef DEBUG - printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", - ivt_offset, ddr_start + ivt_offset); + printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", ivt_offset, ivt_addr); puts("Dumping IVT\n"); - print_buffer(ddr_start + ivt_offset, - (void *)(ddr_start + ivt_offset), - 4, 0x8, 0); + print_buffer(ivt_addr, (void *)(ivt_addr), 4, 0x8, 0); puts("Dumping CSF Header\n"); - print_buffer(ddr_start + ivt_offset + IVT_SIZE, - (void *)(ddr_start + ivt_offset + IVT_SIZE), - 4, 0x10, 0); + print_buffer(ivt_addr + IVT_SIZE, (void *)(ivt_addr + IVT_SIZE), 4, + 0x10, 0); #if !defined(CONFIG_SPL_BUILD) get_hab_status(); @@ -468,6 +435,8 @@ int authenticate_image(uint32_t ddr_start, uint32_t image_size) printf("\tivt_offset = 0x%x\n", ivt_offset); printf("\tstart = 0x%08lx\n", start); printf("\tbytes = 0x%x\n", bytes); +#else + (void)ivt_addr; #endif /* * If the MMU is enabled, we have to notify the ROM diff --git a/arch/arm/mach-imx/spl.c b/arch/arm/mach-imx/spl.c index 6e930b3..e5d0c35 100644 --- a/arch/arm/mach-imx/spl.c +++ b/arch/arm/mach-imx/spl.c @@ -152,9 +152,41 @@ u32 spl_boot_mode(const u32 boot_device) #if defined(CONFIG_SECURE_BOOT) +/* + * +------------+ 0x0 (DDR_UIMAGE_START) - + * | Header | | + * +------------+ 0x40 | + * | | | + * | | | + * | | | + * | | | + * | Image Data | | + * . | | + * . | > Stuff to be authenticated ----+ + * . | | | + * | | | | + * | | | | + * +------------+ | | + * | | | | + * | Fill Data | | | + * | | | | + * +------------+ Align to ALIGN_SIZE | | + * | IVT | | | + * +------------+ + IVT_SIZE - | + * | | | + * | CSF DATA | <---------------------------------------------------------+ + * | | + * +------------+ + * | | + * | Fill Data | + * | | + * +------------+ + CSF_PAD_SIZE + */ + __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) { typedef void __noreturn (*image_entry_noargs_t)(void); + uint32_t offset; image_entry_noargs_t image_entry = (image_entry_noargs_t)(unsigned long)spl_image->entry_point; @@ -163,8 +195,9 @@ __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) /* HAB looks for the CSF at the end of the authenticated data therefore, * we need to subtract the size of the CSF from the actual filesize */ + offset = spl_image->size - CONFIG_CSF_SIZE; if (!authenticate_image(spl_image->load_addr, - spl_image->size - CONFIG_CSF_SIZE)) { + offset + IVT_SIZE + CSF_PAD_SIZE, offset)) { image_entry(); } else { puts("spl: ERROR: image authentication unsuccessful\n");