From f9a3c278b98a17eddbf0ad903689cce47e3e6f47 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 30 Aug 2015 16:55:25 -0600 Subject: rockchip: Add support for the SD image The Rockchip boot ROM requires a particular file format. It consists of 64KB of zeroes, a 512-byte header encoded with RC4, and then some executable code. Add support to mkimage so that an SPL image (u-boot-spl-dtb.bin) can be converted to this format. Signed-off-by: Simon Glass --- tools/Makefile | 2 +- tools/rksd.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 103 insertions(+), 1 deletion(-) create mode 100644 tools/rksd.c (limited to 'tools') diff --git a/tools/Makefile b/tools/Makefile index 267f55c933..9082bda219 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -64,7 +64,7 @@ RSA_OBJS-$(CONFIG_FIT_SIGNATURE) := $(addprefix lib/rsa/, \ rsa-sign.o rsa-verify.o rsa-checksum.o \ rsa-mod-exp.o) -ROCKCHIP_OBS = lib/rc4.o rkcommon.o rkimage.o +ROCKCHIP_OBS = lib/rc4.o rkcommon.o rkimage.o rksd.o # common objs for dumpimage and mkimage dumpimage-mkimage-objs := aisimage.o \ diff --git a/tools/rksd.c b/tools/rksd.c new file mode 100644 index 0000000000..2efcd68c3a --- /dev/null +++ b/tools/rksd.c @@ -0,0 +1,102 @@ +/* + * (C) Copyright 2015 Google, Inc + * Written by Simon Glass + * + * SPDX-License-Identifier: GPL-2.0+ + * + * See README.rockchip for details of the rksd format + */ + +#include "imagetool.h" +#include +#include +#include "mkimage.h" +#include "rkcommon.h" + +enum { + RKSD_HEADER0_START = 64 * RK_BLK_SIZE, + RKSD_SPL_HDR_START = RKSD_HEADER0_START + + RK_CODE1_OFFSET * RK_BLK_SIZE, + RKSD_SPL_START = RKSD_SPL_HDR_START + 4, + RKSD_HEADER_LEN = RKSD_SPL_START, +}; + +static char dummy_hdr[RKSD_HEADER_LEN]; + +static int rksd_check_params(struct image_tool_params *params) +{ + return 0; +} + +static int rksd_verify_header(unsigned char *buf, int size, + struct image_tool_params *params) +{ + return 0; +} + +static void rksd_print_header(const void *buf) +{ +} + +static void rksd_set_header(void *buf, struct stat *sbuf, int ifd, + struct image_tool_params *params) +{ + unsigned int size; + int ret; + + /* Zero the whole header. The first 32KB is empty */ + memset(buf, '\0', RKSD_HEADER0_START); + + size = params->file_size - RKSD_SPL_HDR_START; + ret = rkcommon_set_header(buf + RKSD_HEADER0_START, size); + if (ret) { + /* TODO(sjg@chromium.org): This method should return an error */ + printf("Warning: SPL image is too large (size %#x) and will not boot\n", + size); + } + + memcpy(buf + RKSD_SPL_HDR_START, "RK32", 4); +} + +static int rksd_extract_subimage(void *buf, struct image_tool_params *params) +{ + return 0; +} + +static int rksd_check_image_type(uint8_t type) +{ + if (type == IH_TYPE_RKSD) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +/* We pad the file out to a fixed size - this method returns that size */ +static int rksd_vrec_header(struct image_tool_params *params, + struct image_type_params *tparams) +{ + int pad_size; + + pad_size = RKSD_SPL_HDR_START + RK_MAX_CODE1_SIZE; + debug("pad_size %x\n", pad_size); + + return pad_size - params->file_size; +} + +/* + * rk_sd parameters + */ +U_BOOT_IMAGE_TYPE( + rksd, + "Rockchip SD Boot Image support", + RKSD_HEADER_LEN, + dummy_hdr, + rksd_check_params, + rksd_verify_header, + rksd_print_header, + rksd_set_header, + rksd_extract_subimage, + rksd_check_image_type, + NULL, + rksd_vrec_header +); -- cgit v1.2.1