diff options
Diffstat (limited to 'arch/sandbox/cpu/cpu.c')
| -rw-r--r-- | arch/sandbox/cpu/cpu.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c index ff0fa8a685..7a82798c36 100644 --- a/arch/sandbox/cpu/cpu.c +++ b/arch/sandbox/cpu/cpu.c @@ -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)); |