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sandbox: Avoid binman error when run without device tree

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With sandbox, U-Boot can be run without a device tree (i.e. no -d or -T
parameter). In this case an empty device tree is created for convenience.
With a recent change this causes an error due to the missing '/binman'
node.

Add this node to avoid the problem, as well as a test that U-Boot can
be run without a device tree.

Fixes: 059df5624b ("arch: Kconfig: imply BINMAN for SANDBOX")
Fixes: https://source.denx.de/u-boot/u-boot/-/issues/11
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-04-27 13:47:57 -06:00 committed by Tom Rini
parent ee93f6129d
commit ccf24a9d77
2 changed files with 38 additions and 1 deletions
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27
arch/sandbox/cpu/cpu.c
View file

@ -291,6 +291,31 @@ void invalidate_dcache_range(unsigned long start, unsigned long stop)
{
}
/**
* setup_auto_tree() - Set up a basic device tree to allow sandbox to work
*
* This is used when no device tree is provided. It creates a simple tree with
* just a /binman node.
*
* @blob: Place to put the created device tree
* Returns: 0 on success, -ve FDT error code on failure
*/
static int setup_auto_tree(void *blob)
{
int err;
err = fdt_create_empty_tree(blob, 256);
if (err)
return err;
/* Create a /binman node in case CONFIG_BINMAN is enabled */
err = fdt_add_subnode(blob, 0, "binman");
if (err < 0)
return err;
return 0;
}
void *board_fdt_blob_setup(int *ret)
{
struct sandbox_state *state = state_get_current();
@ -303,7 +328,7 @@ void *board_fdt_blob_setup(int *ret)
blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
*ret = 0;
if (!state->fdt_fname) {
err = fdt_create_empty_tree(blob, 256);
err = setup_auto_tree(blob);
if (!err)
goto done;
printf("Unable to create empty FDT: %s\n", fdt_strerror(err));

12
test/py/tests/test_help.py
View file

@ -9,6 +9,18 @@ def test_help(u_boot_console):
u_boot_console.run_command('help')
@pytest.mark.boardspec('sandbox')
def test_help_no_devicetree(u_boot_console):
try:
cons = u_boot_console
cons.restart_uboot_with_flags([], use_dtb=False)
cons.run_command('help')
output = cons.get_spawn_output().replace('\r', '')
assert 'print command description/usage' in output
finally:
# Restart afterward to get the normal device tree back
u_boot_console.restart_uboot()
@pytest.mark.boardspec('sandbox_vpl')
def test_vpl_help(u_boot_console):
try: