diff options
| -rw-r--r-- | util/intelmetool/intelmetool.c | 3 | ||||
| -rw-r--r-- | util/intelmetool/rcba.c | 6 |
2 files changed, 6 insertions, 3 deletions
diff --git a/util/intelmetool/intelmetool.c b/util/intelmetool/intelmetool.c index ae36fc58fc..5981e9ddbd 100644 --- a/util/intelmetool/intelmetool.c +++ b/util/intelmetool/intelmetool.c @@ -491,7 +491,8 @@ int main(int argc, char *argv[]) #ifndef __DARWIN__ fd_mem = open("/dev/mem", O_RDWR); if (fd_mem < 0) { - perror("Can not open /dev/mem"); + perror("Can not open /dev/mem. Do you have disabled " + "Secure Boot ?"); exit(1); } diff --git a/util/intelmetool/rcba.c b/util/intelmetool/rcba.c index c138e89fd3..ee43e65ce0 100644 --- a/util/intelmetool/rcba.c +++ b/util/intelmetool/rcba.c @@ -68,7 +68,8 @@ int write_rcba32(uint32_t addr, uint32_t val) rcba = map_physical((off_t)rcba_phys, size); if (rcba == NULL) { - printf("Could not map RCBA\n"); + printf("Could not map RCBA\n" + "Do you have cmdline argument 'iomem=relaxed' set ?\n"); return 1; } *(uint32_t *)(rcba + addr) = val; @@ -93,7 +94,8 @@ int read_rcba32(uint32_t addr, uint32_t *val) rcba = map_physical((off_t)rcba_phys, size); if (rcba == NULL) { - printf("Could not map RCBA\n"); + printf("Could not map RCBA\n" + "Do you have cmdline argument 'iomem=relaxed' set ?\n"); return 1; } |