From ae738acdc5f02d232e035538c67d63ba19b9ccaa Mon Sep 17 00:00:00 2001 From: Lee Leahy Date: Sun, 24 Jul 2016 08:03:37 -0700 Subject: cpu/x86: Support CPUs without rdmsr/wrmsr instructions Quark does not support the rdmsr and wrmsr instructions. In this case use a SOC specific routine to support the setting of the MTRRs. Migrate the code from FSP 1.1 to be x86 CPU common. Since all rdmsr/wrmsr accesses are being converted, fix the build failure for quark in lib/reg_script.c. Move the soc_msr_x routines and their depencies from romstage/mtrr.c to reg_access.c. TEST=Build and run on Galileo Gen2 Change-Id: Ibc68e696d8066fbe2322f446d8c983d3f86052ea Signed-off-by: Lee Leahy Reviewed-on: https://review.coreboot.org/15839 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/cpu/x86/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/cpu') diff --git a/src/cpu/x86/Kconfig b/src/cpu/x86/Kconfig index 74d87e2e9f..54a1fefab3 100644 --- a/src/cpu/x86/Kconfig +++ b/src/cpu/x86/Kconfig @@ -153,3 +153,10 @@ config BOOT_MEDIA_SPI_BUS depends on SPI_FLASH help Most x86 systems which boot from SPI flash boot using bus 0. + +config SOC_SETS_MSRS + bool + default n + help + The SoC requires different access methods for reading and writing + the MSRs. Use SoC specific routines to handle the MSR access. -- cgit v1.2.3