- Add arch/cpu.h

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1661 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/src/arch/i386/include/arch/cpu.h b/src/arch/i386/include/arch/cpu.h
new file mode 100644 (file)
index 0000000..0c5b060
--- /dev/null
+++ b/src/arch/i386/include/arch/cpu.h
@@ -0,0 +1,146 @@
+#ifndef ARCH_CPU_H
+#define ARCH_CPU_H
+
+/*
+ * EFLAGS bits
+ */
+#define X86_EFLAGS_CF  0x00000001 /* Carry Flag */
+#define X86_EFLAGS_PF  0x00000004 /* Parity Flag */
+#define X86_EFLAGS_AF  0x00000010 /* Auxillary carry Flag */
+#define X86_EFLAGS_ZF  0x00000040 /* Zero Flag */
+#define X86_EFLAGS_SF  0x00000080 /* Sign Flag */
+#define X86_EFLAGS_TF  0x00000100 /* Trap Flag */
+#define X86_EFLAGS_IF  0x00000200 /* Interrupt Flag */
+#define X86_EFLAGS_DF  0x00000400 /* Direction Flag */
+#define X86_EFLAGS_OF  0x00000800 /* Overflow Flag */
+#define X86_EFLAGS_IOPL        0x00003000 /* IOPL mask */
+#define X86_EFLAGS_NT  0x00004000 /* Nested Task */
+#define X86_EFLAGS_RF  0x00010000 /* Resume Flag */
+#define X86_EFLAGS_VM  0x00020000 /* Virtual Mode */
+#define X86_EFLAGS_AC  0x00040000 /* Alignment Check */
+#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
+#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
+#define X86_EFLAGS_ID  0x00200000 /* CPUID detection flag */
+
+struct cpuid_result {
+       uint32_t eax;
+       uint32_t ebx;
+       uint32_t ecx;
+       uint32_t edx;
+};
+/*
+ * Generic CPUID function
+ */
+static inline struct cpuid_result cpuid(int op)
+{
+       struct cpuid_result result;
+       asm volatile(
+               "cpuid"
+               : "=a" (result.eax),
+                 "=b" (result.ebx),
+                 "=c" (result.ecx),
+                 "=d" (result.edx)
+               : "0" (op));
+       return result;
+}
+
+
+/*
+ * CPUID functions returning a single datum
+ */
+static inline unsigned int cpuid_eax(unsigned int op)
+{
+       unsigned int eax;
+
+       __asm__("cpuid"
+               : "=a" (eax)
+               : "0" (op)
+               : "ebx", "ecx", "edx");
+       return eax;
+}
+static inline unsigned int cpuid_ebx(unsigned int op)
+{
+       unsigned int eax, ebx;
+
+       __asm__("cpuid"
+               : "=a" (eax), "=b" (ebx)
+               : "0" (op)
+               : "ecx", "edx" );
+       return ebx;
+}
+static inline unsigned int cpuid_ecx(unsigned int op)
+{
+       unsigned int eax, ecx;
+
+       __asm__("cpuid"
+               : "=a" (eax), "=c" (ecx)
+               : "0" (op)
+               : "ebx", "edx" );
+       return ecx;
+}
+static inline unsigned int cpuid_edx(unsigned int op)
+{
+       unsigned int eax, edx;
+
+       __asm__("cpuid"
+               : "=a" (eax), "=d" (edx)
+               : "0" (op)
+               : "ebx", "ecx");
+       return edx;
+}
+
+
+
+#define X86_VENDOR_INVALID    0
+#define X86_VENDOR_INTEL      1
+#define X86_VENDOR_CYRIX      2
+#define X86_VENDOR_AMD        3
+#define X86_VENDOR_UMC        4
+#define X86_VENDOR_NEXGEN     5
+#define X86_VENDOR_CENTAUR    6
+#define X86_VENDOR_RISE       7
+#define X86_VENDOR_TRANSMETA  8
+#define X86_VENDOR_NSC        9
+#define X86_VENDOR_SIS       10 
+#define X86_VENDOR_UNKNOWN 0xff
+
+#ifndef __ROMCC__
+#include <device/device.h>
+
+
+struct cpu_device_id {
+       unsigned vendor;
+       unsigned device;
+};
+struct cpu_driver {
+       struct device_operations *ops;
+       struct cpu_device_id *id_table;
+};
+
+struct cpu_info {
+       device_t cpu;
+       unsigned long index;
+};
+
+static inline struct cpu_info *cpu_info(void)
+{
+       struct cpu_info *ci;
+       __asm__("andl %%esp,%0; "
+               "orl  %2, %0 "
+               :"=r" (ci) 
+               : "0" (~(STACK_SIZE - 1)), 
+               "r" (STACK_SIZE - sizeof(struct cpu_info))
+       );
+       return ci;
+}
+
+static inline unsigned long cpu_index(void)
+{
+       struct cpu_info *ci;
+       ci = cpu_info();
+       return ci->index;
+}
+
+#endif
+
+#endif /* ARCH_CPU_H */