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authorGabe Black <gblack@eecs.umich.edu>2007-10-07 18:20:51 -0700
committerGabe Black <gblack@eecs.umich.edu>2007-10-07 18:20:51 -0700
commit8858b0b667a7982604070b3f4a73fcdc76513b76 (patch)
tree15e571fd34c681fd87fd452d119a37e747df885e /src/arch
parenta19c212757b13e45f481d8612fd38f603250c853 (diff)
downloadgem5-8858b0b667a7982604070b3f4a73fcdc76513b76.tar.xz
X86: Make x86 initialize more state.
--HG-- extra : convert_revision : a55866efd339ae795da4072c070918bf419b07fa
Diffstat (limited to 'src/arch')
-rw-r--r--src/arch/x86/utility.cc100
1 files changed, 87 insertions, 13 deletions
diff --git a/src/arch/x86/utility.cc b/src/arch/x86/utility.cc
index 862d14460..96228b6c4 100644
--- a/src/arch/x86/utility.cc
+++ b/src/arch/x86/utility.cc
@@ -75,10 +75,6 @@ uint64_t getArgument(ThreadContext *tc, int number, bool fp) {
# if FULL_SYSTEM
void initCPU(ThreadContext *tc, int cpuId)
{
- // TODO Figure out what the attribute registers should be set to. How this
- // information is stored isn't specified, but it's values are in table
- // 14.2.
-
// The otherwise unmodified integer registers should be set to 0.
for (int index = 0; index < NUM_INTREGS; index++) {
tc->setIntReg(index, 0);
@@ -111,18 +107,32 @@ void initCPU(ThreadContext *tc, int cpuId)
tc->setMiscReg(MISCREG_EFER, 0);
+ SegAttr dataAttr = 0;
+ dataAttr.writable = 1;
+ dataAttr.readable = 1;
+ dataAttr.expandDown = 0;
+ dataAttr.dpl = 0;
+ dataAttr.defaultSize = 0;
+
for (int seg = 0; seg != NUM_SEGMENTREGS; seg++) {
tc->setMiscReg(MISCREG_SEG_SEL(seg), 0);
tc->setMiscReg(MISCREG_SEG_BASE(seg), 0);
tc->setMiscReg(MISCREG_SEG_LIMIT(seg), 0xffff);
- tc->setMiscReg(MISCREG_SEG_ATTR(seg), 0);
+ tc->setMiscReg(MISCREG_SEG_ATTR(seg), dataAttr);
}
+ SegAttr codeAttr = 0;
+ codeAttr.writable = 0;
+ codeAttr.readable = 1;
+ codeAttr.expandDown = 0;
+ codeAttr.dpl = 0;
+ codeAttr.defaultSize = 0;
+
tc->setMiscReg(MISCREG_CS, 0xf000);
tc->setMiscReg(MISCREG_CS_BASE, 0x00000000ffff0000);
// This has the base value pre-added.
tc->setMiscReg(MISCREG_CS_LIMIT, 0xffffffff);
- tc->setMiscReg(MISCREG_CS_ATTR, 0);
+ tc->setMiscReg(MISCREG_CS_ATTR, codeAttr);
tc->setPC(0x000000000000fff0 +
tc->readMiscReg(MISCREG_CS_BASE));
@@ -151,9 +161,35 @@ void initCPU(ThreadContext *tc, int cpuId)
// TODO initialize x87, 64 bit, and 128 bit media state
- // TODO Set up MTRRs (page 512)
-
- // TODO Set up machine check registers (page 515)
+ tc->setMiscReg(MISCREG_MTRRCAP, 0x0508);
+ for (int i = 0; i < 8; i++) {
+ tc->setMiscReg(MISCREG_MTRR_PHYS_BASE(i), 0);
+ tc->setMiscReg(MISCREG_MTRR_PHYS_MASK(i), 0);
+ }
+ tc->setMiscReg(MISCREG_MTRR_FIX_64K_00000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_16K_80000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_16K_A0000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_C0000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4k_C8000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_D0000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_D8000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_E0000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_E8000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_F0000, 0);
+ tc->setMiscReg(MISCREG_MTRR_FIX_4K_F8000, 0);
+
+ tc->setMiscReg(MISCREG_DEF_TYPE, 0);
+
+ tc->setMiscReg(MISCREG_MCG_CAP, 0x104);
+ tc->setMiscReg(MISCREG_MCG_STATUS, 0);
+ tc->setMiscReg(MISCREG_MCG_CTL, 0);
+
+ for (int i = 0; i < 5; i++) {
+ tc->setMiscReg(MISCREG_MC_CTL(i), 0);
+ tc->setMiscReg(MISCREG_MC_STATUS(i), 0);
+ tc->setMiscReg(MISCREG_MC_ADDR(i), 0);
+ tc->setMiscReg(MISCREG_MC_MISC(i), 0);
+ }
tc->setMiscReg(MISCREG_DR0, 0);
tc->setMiscReg(MISCREG_DR1, 0);
@@ -163,18 +199,56 @@ void initCPU(ThreadContext *tc, int cpuId)
tc->setMiscReg(MISCREG_DR6, 0x00000000ffff0ff0);
tc->setMiscReg(MISCREG_DR7, 0x0000000000000400);
- // TODO Set time stamp counter to 0
+ tc->setMiscReg(MISCREG_TSC, 0);
+ tc->setMiscReg(MISCREG_TSC_AUX, 0);
+
+ for (int i = 0; i < 4; i++) {
+ tc->setMiscReg(MISCREG_PERF_EVT_SEL(i), 0);
+ tc->setMiscReg(MISCREG_PERF_EVT_CTR(i), 0);
+ }
+
+ tc->setMiscReg(MISCREG_STAR, 0);
+ tc->setMiscReg(MISCREG_LSTAR, 0);
+ tc->setMiscReg(MISCREG_CSTAR, 0);
- // TODO Set up performance monitoring registers (page 517)
+ tc->setMiscReg(MISCREG_SF_MASK, 0);
- // TODO Set up the rest of the MSRs (page 507)
+ tc->setMiscReg(MISCREG_KERNEL_GS_BASE, 0);
+
+ tc->setMiscReg(MISCREG_SYSENTER_CS, 0);
+ tc->setMiscReg(MISCREG_SYSENTER_ESP, 0);
+ tc->setMiscReg(MISCREG_SYSENTER_EIP, 0);
+
+ tc->setMiscReg(MISCREG_PAT, 0x0007040600070406);
+
+ tc->setMiscReg(MISCREG_SYSCFG, 0x20601);
+
+ tc->setMiscReg(MISCREG_IORR_BASE0, 0);
+ tc->setMiscReg(MISCREG_IORR_BASE1, 0);
+
+ tc->setMiscReg(MISCREG_IORR_MASK0, 0);
+ tc->setMiscReg(MISCREG_IORR_MASK1, 0);
+
+ tc->setMiscReg(MISCREG_TOP_MEM, 0x4000000);
+ tc->setMiscReg(MISCREG_TOP_MEM2, 0x0);
+
+ tc->setMiscReg(MISCREG_DEBUG_CTL_MSR, 0);
+ tc->setMiscReg(MISCREG_LAST_BRANCH_FROM_IP, 0);
+ tc->setMiscReg(MISCREG_LAST_BRANCH_TO_IP, 0);
+ tc->setMiscReg(MISCREG_LAST_EXCEPTION_FROM_IP, 0);
+ tc->setMiscReg(MISCREG_LAST_EXCEPTION_TO_IP, 0);
// Invalidate the caches (this should already be done for us)
// TODO Turn on the APIC. This should be handled elsewhere but it isn't
// currently being handled at all.
- // Set the SMRAM base address (SMBASE) to 0x00030000
+ // TODO Set the SMRAM base address (SMBASE) to 0x00030000
+
+ tc->setMiscReg(MISCREG_VM_CR, 0);
+ tc->setMiscReg(MISCREG_IGNNE, 0);
+ tc->setMiscReg(MISCREG_SMM_CTL, 0);
+ tc->setMiscReg(MISCREG_VM_HSAVE_PA, 0);
}
#endif