diff options
Diffstat (limited to 'drivers/of/fdt.c')
| -rw-r--r-- | drivers/of/fdt.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index ebce509b0886..616a4767a950 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -15,6 +15,10 @@ #include <linux/of.h> #include <linux/of_fdt.h> +#ifdef CONFIG_PPC +#include <asm/machdep.h> +#endif /* CONFIG_PPC */ + int __initdata dt_root_addr_cells; int __initdata dt_root_size_cells; @@ -440,6 +444,40 @@ u64 __init dt_mem_next_cell(int s, u32 **cellp) return of_read_number(p, s); } +int __init early_init_dt_scan_chosen(unsigned long node, const char *uname, + int depth, void *data) +{ + unsigned long l; + char *p; + + pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname); + + if (depth != 1 || + (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0)) + return 0; + + early_init_dt_check_for_initrd(node); + + /* Retreive command line */ + p = of_get_flat_dt_prop(node, "bootargs", &l); + if (p != NULL && l > 0) + strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE)); + +#ifdef CONFIG_CMDLINE +#ifndef CONFIG_CMDLINE_FORCE + if (p == NULL || l == 0 || (l == 1 && (*p) == 0)) +#endif + strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE); +#endif /* CONFIG_CMDLINE */ + + early_init_dt_scan_chosen_arch(node); + + pr_debug("Command line is: %s\n", cmd_line); + + /* break now */ + return 1; +} + /** * unflatten_device_tree - create tree of device_nodes from flat blob * |