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-rw-r--r--arch/i386/kernel/cpu/rise.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/rise.c b/arch/i386/kernel/cpu/rise.c
new file mode 100644
index 000000000000..8602425628ca
--- /dev/null
+++ b/arch/i386/kernel/cpu/rise.c
@@ -0,0 +1,53 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <asm/processor.h>
+
+#include "cpu.h"
+
+static void __init init_rise(struct cpuinfo_x86 *c)
+{
+ printk("CPU: Rise iDragon");
+ if (c->x86_model > 2)
+ printk(" II");
+ printk("\n");
+
+ /* Unhide possibly hidden capability flags
+ The mp6 iDragon family don't have MSRs.
+ We switch on extra features with this cpuid weirdness: */
+ __asm__ (
+ "movl $0x6363452a, %%eax\n\t"
+ "movl $0x3231206c, %%ecx\n\t"
+ "movl $0x2a32313a, %%edx\n\t"
+ "cpuid\n\t"
+ "movl $0x63634523, %%eax\n\t"
+ "movl $0x32315f6c, %%ecx\n\t"
+ "movl $0x2333313a, %%edx\n\t"
+ "cpuid\n\t" : : : "eax", "ebx", "ecx", "edx"
+ );
+ set_bit(X86_FEATURE_CX8, c->x86_capability);
+}
+
+static struct cpu_dev rise_cpu_dev __initdata = {
+ .c_vendor = "Rise",
+ .c_ident = { "RiseRiseRise" },
+ .c_models = {
+ { .vendor = X86_VENDOR_RISE, .family = 5, .model_names =
+ {
+ [0] = "iDragon",
+ [2] = "iDragon",
+ [8] = "iDragon II",
+ [9] = "iDragon II"
+ }
+ },
+ },
+ .c_init = init_rise,
+};
+
+int __init rise_init_cpu(void)
+{
+ cpu_devs[X86_VENDOR_RISE] = &rise_cpu_dev;
+ return 0;
+}
+
+//early_arch_initcall(rise_init_cpu);