Commit a131c1f4 authored by Simon Glass's avatar Simon Glass

rockchip: Add the rkimage format to mkimage

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: default avatarSimon Glass <sjg@chromium.org>
parent 1b99e5bb
......@@ -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, "", "", },
};
......
......@@ -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
......
......@@ -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 \
......
/*
* (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;
}
/*
* (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
/*
* (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
);
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