1 #include <linux/kernel.h>
2 #include <linux/init.h>
3 #include <linux/string.h>
4 #include <asm/processor.h>
9 * Detect a NexGen CPU running without BIOS hypercode new enough
10 * to have CPUID. (Thanks to Herbert Oppmann)
13 static int __cpuinit deep_magic_nexgen_probe(void)
17 __asm__ __volatile__ (
18 " movw $0x5555, %%ax\n"
26 : "=a" (ret) : : "cx", "dx");
30 static void __cpuinit init_nexgen(struct cpuinfo_x86 *c)
32 c->x86_cache_size = 256; /* A few had 1 MB... */
35 static void __cpuinit nexgen_identify(struct cpuinfo_x86 *c)
37 /* Detect NexGen with old hypercode */
38 if (deep_magic_nexgen_probe())
39 strcpy(c->x86_vendor_id, "NexGenDriven");
42 static struct cpu_dev nexgen_cpu_dev __cpuinitdata = {
44 .c_ident = { "NexGenDriven" },
46 { .vendor = X86_VENDOR_NEXGEN,
48 .model_names = { [1] = "Nx586" }
51 .c_init = init_nexgen,
52 .c_identify = nexgen_identify,
55 int __init nexgen_init_cpu(void)
57 cpu_devs[X86_VENDOR_NEXGEN] = &nexgen_cpu_dev;