1. make 32bit have early_init_amd_mc and amd_detect_cmp
2. seperate init_amd_k5/k6/k7 ...
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
---
arch/x86/kernel/cpu/amd.c | 396 ++++++++++++++++++++++++-------------------
arch/x86/kernel/cpu/amd_64.c | 17 +
include/asm-x86/processor.h | 4
3 files changed, 236 insertions(+), 181 deletions(-)
Index: linux-2.6/arch/x86/kernel/cpu/amd.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/amd.c
+++ linux-2.6/arch/x86/kernel/cpu/amd.c
@@ -24,8 +24,200 @@
extern void vide(void);
__asm__(".align 4\nvide: ret");
+static void __cpuinit init_amd_k5(struct cpuinfo_x86 *c)
+{
+/*
+ * General Systems BIOSen alias the cpu frequency registers
+ * of the Elan at 0x000df000. Unfortuantly, one of the Linux
+ * drivers subsequently pokes it, and changes the CPU speed.
+ * Workaround : Remove the unneeded alias.
+ */
+#define CBAR (0xfffc) /* Configuration Base Address (32-bit) */
+#define CBAR_ENB (0x80000000)
+#define CBAR_KEY (0X000000CB)
+ if (c->x86_model == 9 || c->x86_model == 10) {
+ if (inl (CBAR) & CBAR_ENB)
+ outl (0 | CBAR_KEY, CBAR);
+ }
+}
+
+
+static void __cpuinit init_amd_k6(struct cpuinfo_x86 *c)
+{
+ u32 l, h;
+ int mbytes = num_physpages >> (20-PAGE_SHIFT);
+
+ if (c->x86_model < 6) {
+ /* Based on AMD doc 20734R - June 2000 */
+ if (c->x86_model == 0) {
+ clear_cpu_cap(c, X86_FEATURE_APIC);
+ set_cpu_cap(c, X86_FEATURE_PGE);
+ }
+ return;
+ }
+
+ if (c->x86_model == 6 && c->x86_mask == 1) {
+ const int K6_BUG_LOOP = 1000000;
+ int n;
+ void (*f_vide)(void);
+ unsigned long d, d2;
+
+ printk(KERN_INFO "AMD K6 stepping B detected - ");
+
+ /*
+ * It looks like AMD fixed the 2.6.2 bug and improved indirect
+ * calls at the same time.
+ */
+
+ n = K6_BUG_LOOP;
+ f_vide = vide;
+ rdtscl(d);
+ while (n--)
+ f_vide();
+ rdtscl(d2);
+ d = d2-d;
+
+ if (d > ...
