omapimage.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Linaro LTD, www.linaro.org
* Author: John Rigby <john.rigby@linaro.org>
* Based on TI's signGP.c
*
* (C) Copyright 2009
* Stefano Babic, DENX Software Engineering, sbabic@denx.de.
*
* (C) Copyright 2008
* Marvell Semiconductor <www.marvell.com>
* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
*/
#include "imagetool.h"
#include <compiler.h>
#include <image.h>
#include "gpheader.h"
#include "omapimage.h"
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
/* Header size is CH header rounded up to 512 bytes plus GP header */
#define OMAP_CH_HDR_SIZE 512
#define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE + GPIMAGE_HDR_SIZE)
static int do_swap32 = 0;
static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
static int omapimage_check_image_types(uint8_t type)
{
if (type == IH_TYPE_OMAPIMAGE)
return EXIT_SUCCESS;
return EXIT_FAILURE;
}
static int omapimage_verify_header(unsigned char *ptr, int image_size,
struct image_tool_params *params)
{
struct ch_toc *toc = (struct ch_toc *)ptr;
struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
uint32_t offset, size;
while (toc->section_offset != 0xffffffff
&& toc->section_size != 0xffffffff) {
if (do_swap32) {
offset = cpu_to_be32(toc->section_offset);
size = cpu_to_be32(toc->section_size);
} else {
offset = toc->section_offset;
size = toc->section_size;
}
if (!offset || !size)
return -1;
if (offset >= OMAP_CH_HDR_SIZE ||
offset+size >= OMAP_CH_HDR_SIZE)
return -1;
toc++;
}
return gph_verify_header(gph, do_swap32);
}
static void omapimage_print_section(struct ch_settings *chs)
{
const char *section_name;
if (chs->section_key)
section_name = "CHSETTINGS";
else
section_name = "UNKNOWNKEY";
printf("%s (%x) "
"valid:%x "
"version:%x "
"reserved:%x "
"flags:%x\n",
section_name,
chs->section_key,
chs->valid,
chs->version,
chs->reserved,
chs->flags);
}
static void omapimage_print_header(const void *ptr)
{
const struct ch_toc *toc = (struct ch_toc *)ptr;
const struct gp_header *gph =
(struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
uint32_t offset, size;
while (toc->section_offset != 0xffffffff
&& toc->section_size != 0xffffffff) {
if (do_swap32) {
offset = cpu_to_be32(toc->section_offset);
size = cpu_to_be32(toc->section_size);
} else {
offset = toc->section_offset;
size = toc->section_size;
}
if (offset >= OMAP_CH_HDR_SIZE ||
offset+size >= OMAP_CH_HDR_SIZE)
exit(EXIT_FAILURE);
printf("Section %s offset %x length %x\n",
toc->section_name,
toc->section_offset,
toc->section_size);
omapimage_print_section((struct ch_settings *)(ptr+offset));
toc++;
}
gph_print_header(gph, do_swap32);
}
static int toc_offset(void *hdr, void *member)
{
return member - hdr;
}
static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
struct image_tool_params *params)
{
struct ch_toc *toc = (struct ch_toc *)ptr;
struct ch_settings *chs = (struct ch_settings *)
(ptr + 2 * sizeof(*toc));
struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
toc->section_offset = toc_offset(ptr, chs);
toc->section_size = sizeof(struct ch_settings);
strcpy((char *)toc->section_name, "CHSETTINGS");
chs->section_key = KEY_CHSETTINGS;
chs->valid = 0;
chs->version = 1;
chs->reserved = 0;
chs->flags = 0;
toc++;
memset(toc, 0xff, sizeof(*toc));
gph_set_header(gph, sbuf->st_size - OMAP_CH_HDR_SIZE,
params->addr, 0);
if (strncmp(params->imagename, "byteswap", 8) == 0) {
do_swap32 = 1;
int swapped = 0;
uint32_t *data = (uint32_t *)ptr;
const off_t size_in_words =
DIV_ROUND_UP(sbuf->st_size, sizeof(uint32_t));
while (swapped < size_in_words) {
*data = cpu_to_be32(*data);
swapped++;
data++;
}
}
}
/*
* omapimage parameters
*/
U_BOOT_IMAGE_TYPE(
omapimage,
"TI OMAP CH/GP Boot Image support",
OMAP_FILE_HDR_SIZE,
(void *)&omapimage_header,
gpimage_check_params,
omapimage_verify_header,
omapimage_print_header,
omapimage_set_header,
NULL,
omapimage_check_image_types,
NULL,
NULL
);