Rockchip SoCs require certain formats for code that they execute, The simplest format is a 4-byte header at the start of a binary file. Add support for this so that we can create images that the boot ROM understands.
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 | 3 +++ tools/rkcommon.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/rkcommon.h | 28 ++++++++++++++++++++++ tools/rkimage.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 171 insertions(+), 1 deletion(-) create mode 100644 tools/rkcommon.c create mode 100644 tools/rkcommon.h create mode 100644 tools/rkimage.c
diff --git a/common/image.c b/common/image.c index ca721c5..c07c87e 100644 --- a/common/image.c +++ b/common/image.c @@ -155,6 +155,7 @@ static const table_entry_t uimage_type[] = { { IH_TYPE_ATMELIMAGE, "atmelimage", "ATMEL ROM-Boot Image",}, { IH_TYPE_X86_SETUP, "x86_setup", "x86 setup.bin", }, { IH_TYPE_LPC32XXIMAGE, "lpc32xximage", "LPC32XX Boot Image", }, + { IH_TYPE_RKIMAGE, "rkimage", "Rockchip Boot Image" }, { -1, "", "", }, };
diff --git a/include/image.h b/include/image.h index 63c3d37..2daa74a 100644 --- a/include/image.h +++ b/include/image.h @@ -245,8 +245,9 @@ struct lmb; #define IH_TYPE_X86_SETUP 20 /* x86 setup.bin Image */ #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_COUNT 23 /* Number of image types */ +#define IH_TYPE_COUNT 24 /* Number of image types */
/* * Compression Types diff --git a/tools/Makefile b/tools/Makefile index f673258..267f55c 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -64,6 +64,8 @@ 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 + # common objs for dumpimage and mkimage dumpimage-mkimage-objs := aisimage.o \ atmelimage.o \ @@ -90,6 +92,7 @@ dumpimage-mkimage-objs := aisimage.o \ os_support.o \ pblimage.o \ pbl_crc32.o \ + $(ROCKCHIP_OBS) \ socfpgaimage.o \ lib/sha1.o \ lib/sha256.o \ diff --git a/tools/rkcommon.c b/tools/rkcommon.c new file mode 100644 index 0000000..4389622 --- /dev/null +++ b/tools/rkcommon.c @@ -0,0 +1,72 @@ +/* + * (C) Copyright 2015 Google, Inc + * Written by Simon Glass sjg@chromium.org + * + * SPDX-License-Identifier: GPL-2.0+ + * + * Helper functions for Rockchip images + */ + +#include "imagetool.h" +#include <image.h> +#include <rc4.h> +#include "mkimage.h" +#include "rkcommon.h" + +enum { + RK_SIGNATURE = 0x0ff0aa55, +}; + +/** + * struct header0_info - header block for boot ROM + * + * This is stored at SD card block 64 (where each block is 512 bytes, or at + * the start of SPI flash. It is encoded with RC4. + * + * @signature: Signature (must be RKSD_SIGNATURE) + * @disable_rc4: 0 to use rc4 for boot image, 1 to use plain binary + * @code1_offset: Offset in blocks of the SPL code from this header + * block. E.g. 4 means 2KB after the start of this header. + * Other fields are not used by U-Boot + */ +struct header0_info { + uint32_t signature; + uint8_t reserved[4]; + uint32_t disable_rc4; + uint16_t code1_offset; + uint16_t code2_offset; + uint8_t reserved1[490]; + uint16_t usflashdatasize; + uint16_t ucflashbootsize; + uint8_t reserved2[2]; +}; + +static unsigned char rc4_key[16] = { + 124, 78, 3, 4, 85, 5, 9, 7, + 45, 44, 123, 56, 23, 13, 23, 17 +}; + +int rkcommon_set_header(void *buf, uint file_size) +{ + struct header0_info *hdr; + + if (file_size > RK_MAX_CODE1_SIZE) + return -ENOSPC; + + memset(buf, '\0', RK_CODE1_OFFSET * RK_BLK_SIZE); + hdr = (struct header0_info *)buf; + hdr->signature = RK_SIGNATURE; + hdr->disable_rc4 = 1; + hdr->code1_offset = RK_CODE1_OFFSET; + hdr->code2_offset = 8; + + hdr->usflashdatasize = (file_size + RK_BLK_SIZE - 1) / RK_BLK_SIZE; + hdr->usflashdatasize = (hdr->usflashdatasize + 3) & ~3; + hdr->ucflashbootsize = hdr->usflashdatasize; + + debug("size=%x, %x\n", params->file_size, hdr->usflashdatasize); + + rc4_encode(buf, RK_BLK_SIZE, rc4_key); + + return 0; +} diff --git a/tools/rkcommon.h b/tools/rkcommon.h new file mode 100644 index 0000000..57fd726 --- /dev/null +++ b/tools/rkcommon.h @@ -0,0 +1,28 @@ +/* + * (C) Copyright 2015 Google, Inc + * Written by Simon Glass sjg@chromium.org + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _RKCOMMON_H +#define _RKCOMMON_H + +enum { + RK_BLK_SIZE = 512, + RK_CODE1_OFFSET = 4, + RK_MAX_CODE1_SIZE = 32 << 10, +}; + +/** + * rkcommon_set_header() - set up the header for a Rockchip boot image + * + * This sets up a 2KB header which can be interpreted by the Rockchip boot ROM. + * + * @buf: Pointer to header place (must be at least 2KB in size) + * @file_size: Size of the file we want the boot ROM to load, in bytes + * @return 0 if OK, -ENOSPC if too large + */ +int rkcommon_set_header(void *buf, uint file_size); + +#endif diff --git a/tools/rkimage.c b/tools/rkimage.c new file mode 100644 index 0000000..7b292f4 --- /dev/null +++ b/tools/rkimage.c @@ -0,0 +1,65 @@ +/* + * (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 rkimage format + */ + +#include "imagetool.h" +#include <image.h> + +static uint32_t header; + +static int rkimage_check_params(struct image_tool_params *params) +{ + return 0; +} + +static int rkimage_verify_header(unsigned char *buf, int size, + struct image_tool_params *params) +{ + return 0; +} + +static void rkimage_print_header(const void *buf) +{ +} + +static void rkimage_set_header(void *buf, struct stat *sbuf, int ifd, + struct image_tool_params *params) +{ + memcpy(buf, "RK32", 4); +} + +static int rkimage_extract_subimage(void *buf, struct image_tool_params *params) +{ + return 0; +} + +static int rkimage_check_image_type(uint8_t type) +{ + if (type == IH_TYPE_RKIMAGE) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +/* + * rk_image parameters + */ +U_BOOT_IMAGE_TYPE( + rkimage, + "Rockchip Boot Image support", + 4, + &header, + rkimage_check_params, + rkimage_verify_header, + rkimage_print_header, + rkimage_set_header, + rkimage_extract_subimage, + rkimage_check_image_type, + NULL, + NULL +);