From c86c6b33e8ca32ffa0f0d7e30f35f1fb31fe3b4a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Fri, 9 Dec 2016 17:43:27 +0200 Subject: intel cache-as-ram: Move DCACHE_RAM_BASE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Having same memory region set as both WRPROT and WRBACK using MTRRs is undefined behaviour. This could happen if we allow DCACHE_RAM_BASE to be located within CBFS in SPI flash memory and XIP romstage is at the same location. As SPI master by default decodes all of top 16MiB below 4GiB, initial cache-as-ram line fills may have actually read from SPI flash even in the case DCACHE_RAM_BASE was below the nominal 4GiB - ROM_SIZE. There are no reasons to have this as board-specific setting. Change-Id: I2cce80731ede2e7f78197d9b0c77c7e9957a81b5 Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/17806 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/northbridge/intel/nehalem/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/northbridge') diff --git a/src/northbridge/intel/nehalem/Kconfig b/src/northbridge/intel/nehalem/Kconfig index 281f7279bc..94ca346965 100644 --- a/src/northbridge/intel/nehalem/Kconfig +++ b/src/northbridge/intel/nehalem/Kconfig @@ -39,7 +39,7 @@ config VGA_BIOS_ID config DCACHE_RAM_BASE hex - default 0xff7f0000 + default 0xfefc0000 config DCACHE_RAM_SIZE hex -- cgit v1.2.3