system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-10-17 22:04:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

specialreg.h: add AMD-specific "Hardware Configuration Register" MSR

Browse source 
It seems that this MSR has been available in a range of AMD processors
families for quite a while now.

Note1: not all AMD MSRs that are found in amd64 specialreg.h are also in
the i386 version.
Note2: perhaps some additional name component is needed to distinguish
AMD-specific MSRs.

MFC after:	5 days
This commit is contained in:
Andriy Gapon 2010-11-19 15:00:20 +00:00
parent 8fd6d51347
commit 7af7c7624a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=215523
3 changed files with 4 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
sys/amd64/include/specialreg.h
View file

@ -504,6 +504,7 @@
#define MSR_PERFCTR2 0xc0010006
#define MSR_PERFCTR3 0xc0010007
#define MSR_SYSCFG 0xc0010010
#define MSR_HWCR 0xc0010015
#define MSR_IORRBASE0 0xc0010016
#define MSR_IORRMASK0 0xc0010017
#define MSR_IORRBASE1 0xc0010018

2
sys/i386/i386/initcpu.c
View file

@ -672,7 +672,7 @@ initializecpu(void)
(cpu_id & ~0xf) == 0x670 ||
(cpu_id & ~0xf) == 0x680)) {
u_int regs[4];
wrmsr(0xC0010015, rdmsr(0xC0010015) & ~0x08000);
wrmsr(MSR_HWCR, rdmsr(MSR_HWCR) & ~0x08000);
do_cpuid(1, regs);
cpu_feature = regs[3];
}

3
sys/i386/include/specialreg.h
View file

@ -554,7 +554,8 @@
#define AMD_WT_ALLOC_FRE 0x10000 /* fixed (A0000-FFFFF) range enable */
/* AMD64 MSR's */
#define MSR_EFER 0xc0000080 /* extended features */
#define MSR_EFER 0xc0000080 /* extended features */
#define MSR_HWCR 0xc0010015
#define MSR_K8_UCODE_UPDATE 0xc0010020 /* update microcode */
#define MSR_MC0_CTL_MASK 0xc0010044