int
fdt_setup_fdtp()
{
struct preloaded_file *bfp;
vm_offset_t va;
debugf("fdt_setup_fdtp()\n");
/* If we already loaded a file, use it. */
if ((bfp = file_findfile(NULL, "dtb")) != NULL) {
if (fdt_load_dtb(bfp->f_addr) == 0) {
printf("Using DTB from loaded file '%s'.\n",
bfp->f_name);
return (0);
}
}
/* If we were given the address of a valid blob in memory, use it. */
if (fdt_to_load != NULL) {
if (fdt_load_dtb_addr(fdt_to_load) == 0) {
printf("Using DTB from memory address 0x%08X.\n",
(unsigned int)fdt_to_load);
return (0);
}
}
if (fdt_platform_load_dtb() == 0)
return (0);
/* If there is a dtb compiled into the kernel, use it. */
if ((va = fdt_find_static_dtb()) != 0) {
if (fdt_load_dtb(va) == 0) {
printf("Using DTB compiled into kernel.\n");
return (0);
}
}
command_errmsg = "No device tree blob found!\n";
return (1);
}
static int
fdt_setup_fdtp()
{
struct preloaded_file *bfp;
int err;
/*
* Find the device tree blob.
*/
bfp = file_findfile(NULL, "dtb");
if (bfp == NULL) {
if ((fdtp = (struct fdt_header *)fdt_find_static_dtb()) == 0) {
command_errmsg = "no device tree blob found!";
return (CMD_ERROR);
}
} else {
/* Dynamic blob has precedence over static. */
fdtp = (struct fdt_header *)bfp->f_addr;
}
/*
* Validate the blob.
*/
err = fdt_check_header(fdtp);
if (err < 0) {
if (err == -FDT_ERR_BADVERSION)
sprintf(command_errbuf,
"incompatible blob version: %d, should be: %d",
fdt_version(fdtp), FDT_LAST_SUPPORTED_VERSION);
else
sprintf(command_errbuf, "error validating blob: %s",
fdt_strerror(err));
return (CMD_ERROR);
}
return (CMD_OK);
}
