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#include <console/console.h>
#include <cpu/p5/cpuid.h>
#ifdef i586
#include <cpu/p6/msr.h>
#endif
int mtrr_check(void)
{
#ifdef i686
/* Only Pentium Pro and later have MTRR */
msr_t msr;
printk_debug("\nMTRR check\n");
msr = rdmsr(0x2ff);
msr.lo >>= 10;
printk_debug("Fixed MTRRs : ");
if (msr.lo & 0x01)
printk_debug("Enabled\n");
else
printk_debug("Disabled\n");
printk_debug("Variable MTRRs: ");
if (msr.lo & 0x02)
printk_debug("Enabled\n");
else
printk_debug("Disabled\n");
printk_debug("\n");
post_code(0x93);
return ((int) msr.lo);
#else /* !i686 */
return 0;
#endif /* i686 */
}
void display_cpuid(void)
{
int op, eax, ebx, ecx, edx;
int max_op;
max_op = 0;
printk_debug("\n");
for (op = 0; op <= max_op; op++) {
cpuid(op, &eax, &ebx, &ecx, &edx);
if (0 == op) {
max_op = eax;
printk_debug("Max cpuid index : %d\n", eax);
printk_debug("Vendor ID : "
"%c%c%c%c%c%c%c%c%c%c%c%c\n",
ebx, ebx >> 8, ebx >> 16, ebx >> 24, edx,
edx >> 8, edx >> 16, edx >> 24, ecx, ecx >> 8,
ecx >> 16, ecx >> 24);
} else if (1 == op) {
printk_debug("Processor Type : 0x%02x\n",
(eax >> 12) & 0x03);
printk_debug("Processor Family : 0x%02x\n",
(eax >> 8) & 0x0f);
printk_debug("Processor Model : 0x%02x\n",
(eax >> 4) & 0x0f);
printk_debug("Processor Mask : 0x%02x\n",
(ecx >> 0) & 0x0f);
printk_debug("Processor Stepping : 0x%02x\n",
(eax >> 0) & 0x0f);
printk_debug("Feature flags : 0x%08x\n", edx);
} else if (2 == op) {
int desc[4];
int ii;
int _desc;
printk_debug("\n");
printk_debug("Cache/TLB descriptor values: %d "
"reads required\n", eax & 0xff);
desc[0] = eax;
desc[1] = ebx;
desc[2] = ecx;
desc[3] = edx;
for (ii = 1; ii < 16; ii++) {
if (desc[ii >> 2] & 0x80000000) {
printk_debug("reserved descriptor\n");
continue;
}
_desc =
((desc[ii >> 2]) >> ((ii & 0x3) << 3))
& 0xff;
printk_debug("Desc 0x%02x : ", _desc);
switch (_desc) {
case 0x00:
printk_debug("null\n");
break;
case 0x01:
printk_debug("Instr TLB: "
"4KB pages, "
"4-way set assoc, "
"32 entries\n");
break;
case 0x02:
printk_debug("Instr TLB: "
"4MB pages, "
"fully assoc, " "2 entries\n");
break;
case 0x03:
printk_debug("Data TLB: "
"4KB pages, "
"4-way set assoc, "
"64 entries\n");
break;
case 0x04:
printk_debug("Data TLB: "
"4MB pages, "
"4-way set assoc, "
"8 entries\n");
break;
case 0x06:
printk_debug("Inst cache: "
"8K bytes, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x08:
printk_debug("Inst cache: "
"16K bytes, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x0a:
printk_debug("Data cache: "
"8K bytes, "
"2-way set assoc, "
"32 byte line size\n");
break;
case 0x0c:
printk_debug("Data cache: "
"16K bytes, "
"2-way or 4-way set assoc, "
"32 byte line size\n");
break;
case 0x40:
printk_debug("No L2 cache\n");
break;
case 0x41:
printk_debug("L2 Unified cache: "
"128K bytes, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x42:
printk_debug("L2 Unified cache: "
"256K bytes, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x43:
printk_debug("L2 Unified cache: "
"512K bytes, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x44:
printk_debug("L2 Unified cache: "
"1M byte, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x45:
printk_debug("L2 Unified cache: "
"2M byte, "
"4-way set assoc, "
"32 byte line size\n");
break;
case 0x82:
printk_debug("L2 Unified cache: "
"256K bytes, "
"8-way set assoc, "
"32 byte line size\n");
break;
default:
printk_debug("UNKNOWN\n");
}
}
printk_debug("\n");
} else {
printk_debug("op: 0x%02x eax:0x%08x "
"ebx:0x%08x ecx:0x%08x edx:0x%08x\n",
op, eax, ebx, ecx, edx);
}
}
printk_debug("\n");
post_code(0x92);
}
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