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| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2019-02-21 12:11:14 +0100 |
|---|---|---|
| committer | Philipp Deppenwiese <zaolin.daisuki@gmail.com> | 2019-07-02 08:46:00 +0000 |
| commit | a19b07fec13e713004e722f439e1ed7bc2e6ebd0 (patch) | |
| tree | 6c3a55848dc8cdfa97cc0de2d93d87599d113f0c /src/security/memory/Kconfig | |
| parent | c1b7e8a60be9853b5b00fc70615cea2fa8bfafc5 (diff) | |
| download | coreboot-a19b07fec13e713004e722f439e1ed7bc2e6ebd0.tar.xz | |
security/memory: Clear memory in ramstage
* Add architecture independend way of clearing all DRAM
* Implemented in ramstage as MTRRs need to be set to speed up
clearing. Takes up to 15 seconds per GiB otherwise.
* Use memset_pae on x86
* Add quirks for FSP1.0
Tested on P8H61M-Pro:
* Clears 4GiB in less than 1 second
Tested on wedge100s:
* Clears 8GiB in 2 seconds
Change-Id: Idaadb8fb438e5b95557c0f65a14534e8762fde20
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31550
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/security/memory/Kconfig')
| -rw-r--r-- | src/security/memory/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/security/memory/Kconfig b/src/security/memory/Kconfig index 5436119ba5..d84b80d382 100644 --- a/src/security/memory/Kconfig +++ b/src/security/memory/Kconfig @@ -17,7 +17,9 @@ menu "Memory initialization" config PLATFORM_HAS_DRAM_CLEAR bool + default y if ARCH_X86 default n + depends on RELOCATABLE_RAMSTAGE help Selected by platforms that support clearing all DRAM after DRAM initialization. |