* buf[3]:
* Additional feature information.
*
+ * For CPU_L1_CACHE_AND_TLB_IDS:
+ * buf[0]: (eax):
+ * - 7..0 Number of times to exec cpuid to get all descriptors.
+ * - 15..8 Instruction TLB: 4K Pages, 4-way set associtive, 128 entries.
+ * - 23..16 Data TLB: 4k Pages, 4-way set associtive, 128 entries.
+ * - 24..31 Instruction TLB: 4K Pages, 4-way set associtive, 2 entries.
+ * buf[1]: (ebx):
+ * - 7..0 64-byte prefetching
+ * - 8..31 Null descriptor
+ * buf[2]: (ecx):
+ * - 0..31 Null descriptor
+ * buf[3]: (edx):
+ * - 7..0 2nd-level cache, 2M, 8-way set associtive, 64-byte line size
+ * - 15..8 1st-level instruction cache: 32K, 8-way set associtive, 64 byte line size
+ * - 16..23 Data TLB: 4M Pages, 4-way set associtive, 8 entires.
+ * - 24..31 1st-level data cache: 32K, 8-way set associtive, 64 byte line size
+ *
* For CPU_HIGHEST_EXTENDED_FUNCTION_SUPPORTED:
* Returns the highest supported function in *buf (expects an integer ofc)
*
* For CPU_PROC_BRAND_STRING:
* Have a char array with at least 48 bytes assigned to it.
*
+ * Here's a page which will help you parse the data provided by this function.
+ * http://www.flounder.com/cpuid_explorer2.htm
+ *
* If an invalid flag has been passed a 0xbaadf00d is returned in *buf.
*/
void cpuid(cpuid_t info, uint32_t *buf);
bool cpuid_has_feature(int feature, bool extended);
#else
+#include <ccan/build_assert/build_assert.h>
#define cpuid_get_cpu_type() BUILD_ASSERT_OR_ZERO(0)
#define cpuid_get_cpu_type_string() BUILD_ASSERT_OR_ZERO(0)