81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
|
/*
|
||
|
|
* (C) Copyright 2017
|
||
|
|
* Texas Instruments, <www.ti.com>
|
||
|
|
*
|
||
|
|
* Franklin S Cooper Jr. <fcooper@ti.com>
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <boot_fit.h>
|
||
|
|
#include <common.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <image.h>
|
||
|
|
#include <libfdt.h>
|
||
|
|
|
||
|
|
int fdt_offset(void *fit)
|
||
|
|
{
|
||
|
|
int images, node, fdt_len, fdt_node, fdt_offset;
|
||
|
|
const char *fdt_name;
|
||
|
|
|
||
|
|
node = fit_find_config_node(fit);
|
||
|
|
if (node < 0)
|
||
|
|
return node;
|
||
|
|
|
||
|
|
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
|
||
|
|
if (images < 0) {
|
||
|
|
debug("%s: Cannot find /images node: %d\n", __func__, images);
|
||
|
|
return FDT_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
fdt_name = fdt_getprop(fit, node, FIT_FDT_PROP, &fdt_len);
|
||
|
|
if (!fdt_name) {
|
||
|
|
debug("%s: Cannot find fdt name property: %d\n",
|
||
|
|
__func__, fdt_len);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
fdt_node = fdt_subnode_offset(fit, images, fdt_name);
|
||
|
|
if (fdt_node < 0) {
|
||
|
|
debug("%s: Cannot find fdt node '%s': %d\n",
|
||
|
|
__func__, fdt_name, fdt_node);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
fdt_offset = fdt_getprop_u32(fit, fdt_node, "data-offset");
|
||
|
|
|
||
|
|
if (fdt_offset == FDT_ERROR)
|
||
|
|
return -ENOENT;
|
||
|
|
|
||
|
|
fdt_len = fdt_getprop_u32(fit, fdt_node, "data-size");
|
||
|
|
|
||
|
|
if (fdt_len < 0)
|
||
|
|
return fdt_len;
|
||
|
|
|
||
|
|
return fdt_offset;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *locate_dtb_in_fit(void *fit)
|
||
|
|
{
|
||
|
|
struct image_header *header;
|
||
|
|
int size;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
size = fdt_totalsize(fit);
|
||
|
|
size = (size + 3) & ~3;
|
||
|
|
|
||
|
|
header = (struct image_header *)fit;
|
||
|
|
|
||
|
|
if (image_get_magic(header) != FDT_MAGIC) {
|
||
|
|
debug("No FIT image appended to U-boot\n");
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = fdt_offset(fit);
|
||
|
|
|
||
|
|
if (ret <= 0)
|
||
|
|
return NULL;
|
||
|
|
else
|
||
|
|
return (void *)fit+size+ret;
|
||
|
|
}
|