diff options
Diffstat (limited to 'arch/mips/include/asm/bootinfo.h')
| -rw-r--r-- | arch/mips/include/asm/bootinfo.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h index aa03b1237155..5be10ece3ef0 100644 --- a/arch/mips/include/asm/bootinfo.h +++ b/arch/mips/include/asm/bootinfo.h @@ -112,7 +112,27 @@ extern char arcs_cmdline[COMMAND_LINE_SIZE]; extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; #ifdef CONFIG_USE_OF -extern unsigned long fw_passed_dtb; +#include <linux/libfdt.h> +#include <linux/of_fdt.h> + +extern char __appended_dtb[]; + +static inline void *get_fdt(void) +{ + if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) || + IS_ENABLED(CONFIG_MIPS_ELF_APPENDED_DTB)) + if (fdt_magic(&__appended_dtb) == FDT_MAGIC) + return &__appended_dtb; + + if (fw_arg0 == -2) /* UHI interface */ + return (void *)fw_arg1; + + if (IS_ENABLED(CONFIG_BUILTIN_DTB)) + if (&__dtb_start != &__dtb_end) + return &__dtb_start; + + return NULL; +} #endif /* |