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 sjg@chromium.org ---
Changes in v4: None Changes in v3: None Changes in v2: None
common/image.c | 1 + include/image.h | 3 +- tools/Makefile | 2 +- tools/rksd.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 106 insertions(+), 2 deletions(-) create mode 100644 tools/rksd.c
diff --git a/common/image.c b/common/image.c index c07c87e..ff278e1 100644 --- a/common/image.c +++ b/common/image.c @@ -156,6 +156,7 @@ static const table_entry_t uimage_type[] = { { IH_TYPE_X86_SETUP, "x86_setup", "x86 setup.bin", }, { IH_TYPE_LPC32XXIMAGE, "lpc32xximage", "LPC32XX Boot Image", }, { IH_TYPE_RKIMAGE, "rkimage", "Rockchip Boot Image" }, + { IH_TYPE_RKSD, "rksd", "Rockchip SD Boot Image" }, { -1, "", "", }, };
diff --git a/include/image.h b/include/image.h index 2daa74a..ea16205 100644 --- a/include/image.h +++ b/include/image.h @@ -246,8 +246,9 @@ struct lmb; #define IH_TYPE_LPC32XXIMAGE 21 /* x86 setup.bin Image */ #define IH_TYPE_LOADABLE 22 /* A list of typeless images */ #define IH_TYPE_RKIMAGE 23 /* Rockchip Boot Image */ +#define IH_TYPE_RKSD 24 /* Rockchip SD card */
-#define IH_TYPE_COUNT 24 /* Number of image types */ +#define IH_TYPE_COUNT 25 /* Number of image types */
/* * Compression Types diff --git a/tools/Makefile b/tools/Makefile index 267f55c..9082bda 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 0000000..2efcd68 --- /dev/null +++ b/tools/rksd.c @@ -0,0 +1,102 @@ +/* + * (C) Copyright 2015 Google, Inc + * Written by Simon Glass sjg@chromium.org + * + * SPDX-License-Identifier: GPL-2.0+ + * + * See README.rockchip for details of the rksd format + */ + +#include "imagetool.h" +#include <image.h> +#include <rc4.h> +#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 +);