diff options
| author | Dave Young <dyoung@redhat.com> | 2015-11-23 15:04:23 +0800 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2015-11-24 16:04:10 +0900 |
| commit | 4bad06c3cd2a989459458eadd78c703ac5a3b8b6 (patch) | |
| tree | 751d05ca599529d1c4eb1174777e5d5725812b3d /kexec/arch/arm/kexec-arm.c | |
| parent | 4580c372000b469c4292e548c806dfe5922e97d1 (diff) | |
arm: use /sys/firmware/fdt in case without --atags and --dtb
Latest linux kernel will create /sys/firmware/fdt file. It will be convenient
to use it in case one does not specify --atags and --dtb options.
Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'kexec/arch/arm/kexec-arm.c')
| -rw-r--r-- | kexec/arch/arm/kexec-arm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kexec/arch/arm/kexec-arm.c b/kexec/arch/arm/kexec-arm.c index 10035f2..4e90e69 100644 --- a/kexec/arch/arm/kexec-arm.c +++ b/kexec/arch/arm/kexec-arm.c @@ -12,6 +12,7 @@ #include <stdint.h> #include <string.h> #include <getopt.h> +#include <unistd.h> #include "../../kexec.h" #include "../../kexec-syscall.h" #include "kexec-arm.h" @@ -137,3 +138,9 @@ int arch_compat_trampoline(struct kexec_info *UNUSED(info)) void arch_update_purgatory(struct kexec_info *UNUSED(info)) { } + +/* return 1 if /sys/firmware/fdt exists, otherwise return 0 */ +int have_sysfs_fdt(void) +{ + return !access(SYSFS_FDT, F_OK); +} |