From c34713d33e088095acb6dd61527a26117d9c368e Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Tue, 25 Feb 2014 20:36:56 -0600 Subject: x86: add MIRROR_PAYLOAD_TO_RAM_BEFORE_LOADING option MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Boot speeds can be sped up by mirroring the payload into main memory before doing the actual loading. Systems that would benefit from this are typically Intel ones whose SPI are memory mapped. Without the SPI being cached all accesses to the payload in SPI while being loaded result in uncacheable accesses. Instead take advantage of the on-board SPI controller which has an internal cache and prefetcher by copying 64-byte cachelines using 32-bit word copies. Change-Id: I4aac856b1b5130fa2d68a6c45a96cfeead472a52 Signed-off-by: Aaron Durbin Reviewed-on: http://review.coreboot.org/5305 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Vladimir Serbinenko Reviewed-by: Kyösti Mälkki --- src/include/payload_loader.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/include') diff --git a/src/include/payload_loader.h b/src/include/payload_loader.h index 7ef5806751..7a3f045f1c 100644 --- a/src/include/payload_loader.h +++ b/src/include/payload_loader.h @@ -44,6 +44,9 @@ struct payload *payload_load(void); /* Run the loaded payload. */ void payload_run(const struct payload *payload); +/* Mirror the payload to be loaded. */ +void mirror_payload(struct payload *payload); + /* architecture specific function to run payload. */ void arch_payload_run(const struct payload *payload); -- cgit v1.2.3