diff options
| author | Furquan Shaikh <furquan@google.com> | 2015-05-20 17:10:55 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-06-02 11:34:30 +0200 |
| commit | 35531197d4ef0c5ef59c9720d12a68235da86558 (patch) | |
| tree | 6cceef9f69dac3087b68a27de6cb452446e01796 | |
| parent | 623368113c7fb0a7382cb28ecfba5384cd4f12a0 (diff) | |
arm64: Guard prints in mmu.c
We have observed issues with enabling CONFIG_SMP and adding prints
before MMU is enabled on Tegra-based SoCs. This seems to be related
to the hardware assisted locks and the restrictions laid down by ARMv8
spec.
BUG=None
BRANCH=None
TEST=Boots to kernel prompt on smaug.
Change-Id: I29a52f5a972baf396c01faba3ae3e5ecd27563e9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f52ee4b5b2e9b7f54eee0d105cb7e17f9a7e1613
Original-Change-Id: I432895560f468903c7beef00e78b6d38275a619c
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/272449
Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/10311
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
| -rw-r--r-- | src/arch/arm64/armv8/mmu.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/arch/arm64/armv8/mmu.c b/src/arch/arm64/armv8/mmu.c index 0bd678a24d..e16ee71aa5 100644 --- a/src/arch/arm64/armv8/mmu.c +++ b/src/arch/arm64/armv8/mmu.c @@ -220,9 +220,12 @@ void mmu_config_range(void *start, size_t size, uint64_t tag) uint64_t base_addr = (uintptr_t)start; uint64_t temp_size = size; - printk(BIOS_INFO, "Mapping address range [%p:%p) as ", - start, start + size); - print_tag(BIOS_INFO, tag); + if (!IS_ENABLED(CONFIG_SMP)) { + printk(BIOS_INFO, "Mapping address range [%p:%p) as ", + start, start + size); + print_tag(BIOS_INFO, tag); + } + sanity_check(base_addr, temp_size); while (temp_size) |