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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [x86/] [kernel/] [cpu/] [nexgen.c] - Rev 3
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#include <linux/kernel.h> #include <linux/init.h> #include <linux/string.h> #include <asm/processor.h> #include "cpu.h" /* * Detect a NexGen CPU running without BIOS hypercode new enough * to have CPUID. (Thanks to Herbert Oppmann) */ static int __cpuinit deep_magic_nexgen_probe(void) { int ret; __asm__ __volatile__ ( " movw $0x5555, %%ax\n" " xorw %%dx,%%dx\n" " movw $2, %%cx\n" " divw %%cx\n" " movl $0, %%eax\n" " jnz 1f\n" " movl $1, %%eax\n" "1:\n" : "=a" (ret) : : "cx", "dx" ); return ret; } static void __cpuinit init_nexgen(struct cpuinfo_x86 * c) { c->x86_cache_size = 256; /* A few had 1 MB... */ } static void __cpuinit nexgen_identify(struct cpuinfo_x86 * c) { /* Detect NexGen with old hypercode */ if ( deep_magic_nexgen_probe() ) { strcpy(c->x86_vendor_id, "NexGenDriven"); } } static struct cpu_dev nexgen_cpu_dev __cpuinitdata = { .c_vendor = "Nexgen", .c_ident = { "NexGenDriven" }, .c_models = { { .vendor = X86_VENDOR_NEXGEN, .family = 5, .model_names = { [1] = "Nx586" } }, }, .c_init = init_nexgen, .c_identify = nexgen_identify, }; int __init nexgen_init_cpu(void) { cpu_devs[X86_VENDOR_NEXGEN] = &nexgen_cpu_dev; return 0; }