Commit 95fac6ab authored by Simon Glass's avatar Simon Glass

sandbox: Use os functions to read host device tree

At present we use U-Boot's filesystem layer to read the sandbox device tree,
but this is problematic since it relies on a temporary feauture added
there. Since we plan to implement proper block layer support for sandbox,
change this code to use the os layer functions instead. Also use the new
fdt_create_empty_tree() instead of our own code.
Signed-off-by: 's avatarSimon Glass <>
parent 9f604425
......@@ -282,45 +282,39 @@ __weak int arch_cpu_init(void)
#define CHECK(x) err = (x); if (err) goto failed;
/* Create an empty device tree blob */
static int make_empty_fdt(void *fdt)
int err;
CHECK(fdt_create(fdt, 256));
CHECK(fdt_begin_node(fdt, ""));
return 0;
printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
return -EACCES;
static int read_fdt_from_file(void)
struct sandbox_state *state = state_get_current();
const char *fname = state->fdt_fname;
void *blob;
int size;
ssize_t size;
int err;
int fd;
blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
if (!state->fdt_fname) {
err = make_empty_fdt(blob);
err = fdt_create_empty_tree(blob, 256);
if (!err)
goto done;
return err;
printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
return -EINVAL;
size = os_get_filesize(fname);
if (size < 0) {
printf("Failed to file FDT file '%s'\n", fname);
return -ENOENT;
fd = os_open(fname, OS_O_RDONLY);
if (fd < 0) {
printf("Failed to open FDT file '%s'\n", fname);
return -EACCES;
err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
if (err)
return err;
size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
if (size < 0)
if (os_read(fd, blob, size) != size) {
return -EIO;
gd->fdt_blob = blob;
......@@ -452,23 +452,6 @@ int get_device_and_partition(const char *ifname, const char *dev_part_str,
int part;
disk_partition_t tmpinfo;
* For now, we have a special case for sandbox, since there is no
* real block device support.
if (0 == strcmp(ifname, "host")) {
*dev_desc = NULL;
info->start = info->size = info->blksz = 0;
info->bootable = 0;
strcpy((char *)info->type, BOOT_PART_TYPE);
strcpy((char *)info->name, "Sandbox host");
info->uuid[0] = 0;
return 0;
/* If no dev_part_str, use bootdevice environment variable */
if (!dev_part_str || !strlen(dev_part_str) ||
!strcmp(dev_part_str, "-"))
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment