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authorAsami Doi <d0iasm.pub@gmail.com>2019-08-07 13:40:53 +0900
committerPatrick Georgi <pgeorgi@google.com>2019-08-26 07:14:03 +0000
commit06993ee7295c81f71462616277624fbf8ebc8ec9 (patch)
tree569e82efdd9292de5d318a4402d368359fbdd97f /src/include
parentb0b99058ccf975f5612cdf4aa15607dee05822b1 (diff)
downloadcoreboot-06993ee7295c81f71462616277624fbf8ebc8ec9.tar.xz
lib: ramdetect: Register exception handlers for ARMv8
Register exception handlers to avoid a Synchronous External Abort that is raised when you try to access a non-memory address on ARMv8. An exception handler can jump over the faulting instruction. This is the feature only for QEMU/AArch64. Signed-off-by: Asami Doi <d0iasm.pub@gmail.com> Change-Id: I09a306ca307ba4027d9758c3debc2e7c844c66b8 Reviewed-on: https://review.coreboot.org/c/coreboot/+/34774 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>
Diffstat (limited to 'src/include')
-rw-r--r--src/include/ramdetect.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/include/ramdetect.h b/src/include/ramdetect.h
index b63cdf14cf..e2a7eced67 100644
--- a/src/include/ramdetect.h
+++ b/src/include/ramdetect.h
@@ -11,6 +11,12 @@
* GNU General Public License for more details.
*/
+
+/*
+ * Used in probe_ramsize(). This is a weak function and it's overridden for
+ * ARMv8. Return 1 when DRAM exists at the address, otherwise return 0.
+ */
+int probe_mb(const uintptr_t dram_start, const uintptr_t size);
/*
* Probe an area if it's read/writable.
* Primary use case is the detection of DRAM amount on emulators.