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| author | Asami Doi <d0iasm.pub@gmail.com> | 2019-08-07 13:40:53 +0900 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-08-26 07:14:03 +0000 |
| commit | 06993ee7295c81f71462616277624fbf8ebc8ec9 (patch) | |
| tree | 569e82efdd9292de5d318a4402d368359fbdd97f /src/include/ramdetect.h | |
| parent | b0b99058ccf975f5612cdf4aa15607dee05822b1 (diff) | |
| download | coreboot-06993ee7295c81f71462616277624fbf8ebc8ec9.tar.gz coreboot-06993ee7295c81f71462616277624fbf8ebc8ec9.tar.bz2 coreboot-06993ee7295c81f71462616277624fbf8ebc8ec9.zip | |
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/ramdetect.h')
| -rw-r--r-- | src/include/ramdetect.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/include/ramdetect.h b/src/include/ramdetect.h index b63cdf14cf8d..e2a7eced674a 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. |