Intel E7501 P64H2 ICH5R support

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1616 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/cpu/p6/Config.lb

@@ -1,5 +1,10 @@
 uses INTEL_PPRO_MTRR
+uses CPU_FIXUP
 dir /cpu/p5
-object cpufixup.o
+config chip.h
+if CPU_FIXUP
+  object cpufixup.o
+  object apic_timer.o
+end
 object mtrr.o
 object pgtbl.o

src/cpu/p6/apic_timer.c

@@ -0,0 +1,26 @@
+#include <stdint.h>
+#include <delay.h>
+#include <cpu/p6/msr.h>
+#include <cpu/p6/apic.h>
+
+void init_timer(void)
+{
+	/* Set the apic timer to no interrupts and periodic mode */
+	apic_write(APIC_LVTT, (1 << 17)|(1<< 16)|(0 << 12)|(0 << 0));
+	/* Set the divider to 1, no divider */
+	apic_write(APIC_TDCR, APIC_TDR_DIV_1);
+	/* Set the initial counter to 0xffffffff */
+	apic_write(APIC_TMICT, 0xffffffff);
+}
+
+void udelay(unsigned usecs)
+{
+	uint32_t start, value, ticks;
+	/* Calculate the number of ticks to run, our FSB runs a 200Mhz */
+	ticks = usecs * 200;
+	start = apic_read(APIC_TMCCT);
+	do {
+		value = apic_read(APIC_TMCCT);
+	} while((start - value) < ticks);
+	
+}

src/cpu/p6/chip.h

@@ -0,0 +1,5 @@
+extern struct chip_control cpu_p6_control;
+
+struct cpu_p6_config {
+	int nothing;
+};

src/cpu/p6/cpufixup.c

@@ -351,3 +351,27 @@ void p6_cpufixup(struct mem_range *mem)
 	printk_debug("Updating microcode\n");
 	display_cpuid_update_microcode();
 }
+
+
+static
+void p6_enable(struct chip *chip, enum chip_pass pass)
+{
+
+        struct cpu_p6_config *conf = (struct cpu_p6_config *)chip->chip_info;
+
+        switch (pass) {
+        case CONF_PASS_PRE_CONSOLE:
+                break;
+        case CONF_PASS_PRE_PCI:
+                init_timer();
+                break;
+        default:
+                /* nothing yet */
+                break;
+        }
+}
+
+struct chip_control cpu_p6_control = {
+        .enable = p6_enable,
+        .name   = "Intel P6  CPU",
+};

src/cpu/p6/disable_mmx_sse.inc

@@ -0,0 +1,27 @@
+	/* Clear out an mmx state */
+	emms
+
+	/*
+	 * Put the processor back into a reset state
+	 * with respect to the xmm registers.
+	 */
+	
+	pxor %xmm0, %xmm0
+	pxor %xmm1, %xmm1
+	pxor %xmm2, %xmm2
+	pxor %xmm3, %xmm3
+	pxor %xmm4, %xmm4
+	pxor %xmm5, %xmm5
+	pxor %xmm6, %xmm6
+	pxor %xmm7, %xmm7
+
+	/* Disable floating point emulation */
+	movl	%cr0, %eax
+	andl	$~(1<<2), %eax
+	movl	%eax, %cr0
+
+	/* Disable sse instructions */
+	movl	%cr4, %eax
+	andl	$~(3<<9), %eax
+	movl	%eax, %cr4
+

src/cpu/p6/enable_mmx_sse.inc

@@ -0,0 +1,25 @@
+	/* Save the BIST result */
+	movl	%eax, %ebp
+	
+	/*
+	 * Enabling mmx registers is a noop
+	 * Enable the use of the xmm registers
+	 */
+
+        /* Enable sse instructions */
+        movl    %cr4, %eax
+        orl     $(1<<9), %eax
+        movl    %eax, %cr4
+
+	/* Disable floating point emulation */
+	movl	%cr0, %eax
+	andl	$~(1<<2), %eax
+	movl	%eax, %cr0
+
+        /* enable sse extension */
+        movl    %cr0, %eax
+        andl    $~(1<<1), %eax
+        movl    %eax, %cr0
+
+	/* Restore the BIST result */
+	movl	%ebp, %eax