diff options
| author | Paul Wise <pabs3@bonedaddy.net> | 2017-05-04 14:13:38 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-05-05 22:40:54 +0200 |
| commit | e311f94279de87f31b94d47cc46c43f0dd7741ef (patch) | |
| tree | 292633b1342d978555a5fc6138877a3e6f394258 | |
| parent | 769f46625be2fe42d98375a72fb4e5a351df511d (diff) | |
intelmetool: handle failures to mmap MEI memory
Fixes crashes when there is an error mapping memory.
Error mapping physical memory 0x0000004275159040 [0x4000] ERRNO=1
Segmentation fault (core dumped)
Change-Id: I5becc0c2870dd97297c4e8d1b101b95b31792ca7
Signed-off-by: Paul Wise <pabs3@bonedaddy.net>
Reviewed-on: https://review.coreboot.org/19562
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
| -rw-r--r-- | util/intelmetool/intelmetool.c | 10 | ||||
| -rw-r--r-- | util/intelmetool/me.c | 4 |
2 files changed, 14 insertions, 0 deletions
diff --git a/util/intelmetool/intelmetool.c b/util/intelmetool/intelmetool.c index 62dc4d92c4..11c2120c16 100644 --- a/util/intelmetool/intelmetool.c +++ b/util/intelmetool/intelmetool.c @@ -83,6 +83,10 @@ static void dump_me_memory() { uint8_t *dump; dump = map_physical_exact((off_t)me_clone, (void *)me_clone, 0x2000000); + if (dump == NULL) { + printf("Could not map ME memory\n"); + return; + } zeroit(dump, 0x2000000); printf("Send magic command for memory clone\n"); @@ -210,6 +214,12 @@ static int activate_me() { rcba_phys = pci_read_long(sb, 0xf0) & 0xfffffffe; rcba = map_physical((off_t)rcba_phys, size); + if (rcba == NULL) { + printf("Could not map MEI PCI device memory\n"); + pci_free_dev(sb); + pci_cleanup(pacc); + return 1; + } //printf("RCBA at 0x%08" PRIx32 "\n", (uint32_t)rcba_phys); fd2 = *(uint32_t *)(rcba + FD2); diff --git a/util/intelmetool/me.c b/util/intelmetool/me.c index da5fb71643..8c703a3465 100644 --- a/util/intelmetool/me.c +++ b/util/intelmetool/me.c @@ -581,6 +581,10 @@ uint32_t intel_mei_setup(struct pci_dev *dev) mei_base_address = dev->base_addr[0] & ~0xf; pagerounded = mei_base_address & ~0xfff; mei_mmap = map_physical(pagerounded, 0x2000) + mei_base_address - pagerounded; + if (mei_mmap == NULL) { + printf("Could not map ME setup memory\n"); + return 1; + } /* Ensure Memory and Bus Master bits are set */ reg32 = pci_read_long(dev, PCI_COMMAND); |