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/*
* (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 rkspi format
*/
#include "imagetool.h"
#include <image.h>
#include <rc4.h>
#include "mkimage.h"
#include "rkcommon.h"
enum {
RKSPI_SECT_LEN = RK_BLK_SIZE * 4,
};
static char dummy_hdr[RK_IMAGE_HEADER_LEN];
static int rkspi_verify_header(unsigned char *buf, int size,
struct image_tool_params *params)
{
return 0;
}
static void rkspi_print_header(const void *buf)
{
}
static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd,
struct image_tool_params *params)
{
int sector;
unsigned int size;
int ret;
size = params->orig_file_size;
ret = rkcommon_set_header(buf, size, params);
debug("size %x\n", 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 + RK_SPL_HDR_START, rkcommon_get_spl_hdr(params),
RK_SPL_HDR_SIZE);
/*
* Spread the image out so we only use the first 2KB of each 4KB
* region. This is a feature of the SPI format required by the Rockchip
* boot ROM. Its rationale is unknown.
*/
for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) {
printf("sector %u\n", sector);
memmove(buf + sector * RKSPI_SECT_LEN * 2,
buf + sector * RKSPI_SECT_LEN,
RKSPI_SECT_LEN);
memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN,
'\0', RKSPI_SECT_LEN);
}
}
static int rkspi_extract_subimage(void *buf, struct image_tool_params *params)
{
return 0;
}
static int rkspi_check_image_type(uint8_t type)
{
if (type == IH_TYPE_RKSPI)
return EXIT_SUCCESS;
else
return EXIT_FAILURE;
}
/* We pad the file out to a fixed size - this method returns that size */
static int rkspi_vrec_header(struct image_tool_params *params,
struct image_type_params *tparams)
{
int pad_size;
pad_size = (rkcommon_get_spl_size(params) + 0x7ff) / 0x800 * 0x800;
params->orig_file_size = pad_size;
/* We will double the image size due to the SPI format */
pad_size *= 2;
pad_size += RK_SPL_HDR_START;
debug("pad_size %x\n", pad_size);
return pad_size - params->file_size;
}
/*
* rk_spi parameters
*/
U_BOOT_IMAGE_TYPE(
rkspi,
"Rockchip SPI Boot Image support",
RK_IMAGE_HEADER_LEN,
dummy_hdr,
rkcommon_check_params,
rkspi_verify_header,
rkspi_print_header,
rkspi_set_header,
rkspi_extract_subimage,
rkspi_check_image_type,
NULL,
rkspi_vrec_header
);
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