diff options
Diffstat (limited to 'kexec')
| -rw-r--r-- | kexec/arch/ppc64/kexec-ppc64.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/kexec/arch/ppc64/kexec-ppc64.c b/kexec/arch/ppc64/kexec-ppc64.c index 8d4e42b..758e547 100644 --- a/kexec/arch/ppc64/kexec-ppc64.c +++ b/kexec/arch/ppc64/kexec-ppc64.c @@ -150,6 +150,23 @@ static int get_dyn_reconf_base_ranges(void) FILE *file; int i, n; + strcpy(fname, "/proc/device-tree/"); + strcat(fname, "ibm,dynamic-reconfiguration-memory/ibm,lmb-size"); + if ((file = fopen(fname, "r")) == NULL) { + perror(fname); + return -1; + } + if (fread(buf, 1, 8, file) != 8) { + perror(fname); + fclose(file); + return -1; + } + /* + * lmb_size, num_of_lmbs(global variables) are + * initialized once here. + */ + lmb_size = ((uint64_t *)buf)[0]; + fclose(file); strcpy(fname, "/proc/device-tree/"); strcat(fname, @@ -158,8 +175,14 @@ static int get_dyn_reconf_base_ranges(void) perror(fname); return -1; } + /* first 4 bytes tell the number of lmbs */ + if (fread(buf, 1, 4, file) != 4) { + perror(fname); + fclose(file); + return -1; + } + num_of_lmbs = ((unsigned int *)buf)[0]; - fseek(file, 4, SEEK_SET); for (i = 0; i < num_of_lmbs; i++) { if ((n = fread(buf, 1, 24, file)) < 0) { perror(fname); |