5 /* These are the region types */
6 #define MTRR_TYPE_UNCACHEABLE 0
7 #define MTRR_TYPE_WRCOMB 1
8 /*#define MTRR_TYPE_ 2*/
9 /*#define MTRR_TYPE_ 3*/
10 #define MTRR_TYPE_WRTHROUGH 4
11 #define MTRR_TYPE_WRPROT 5
12 #define MTRR_TYPE_WRBACK 6
13 #define MTRR_NUM_TYPES 7
15 #define MTRRcap_MSR 0x0fe
16 #define MTRRdefType_MSR 0x2ff
18 #define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
19 #define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
21 #define NUM_FIXED_RANGES 88
22 #define MTRRfix64K_00000_MSR 0x250
23 #define MTRRfix16K_80000_MSR 0x258
24 #define MTRRfix16K_A0000_MSR 0x259
25 #define MTRRfix4K_C0000_MSR 0x268
26 #define MTRRfix4K_C8000_MSR 0x269
27 #define MTRRfix4K_D0000_MSR 0x26a
28 #define MTRRfix4K_D8000_MSR 0x26b
29 #define MTRRfix4K_E0000_MSR 0x26c
30 #define MTRRfix4K_E8000_MSR 0x26d
31 #define MTRRfix4K_F0000_MSR 0x26e
32 #define MTRRfix4K_F8000_MSR 0x26f
35 #if !defined(__ROMCC__) && !defined (ASSEMBLY)
37 #include <device/device.h>
39 void enable_fixed_mtrr(void);
40 void x86_setup_var_mtrrs(unsigned address_bits);
41 void x86_setup_mtrrs(unsigned address_bits);
42 int x86_mtrr_check(void);
43 void set_var_mtrr_resource(void *gp, struct device *dev, struct resource *res);
44 void x86_setup_fixed_mtrrs(void);
46 #endif /* __ROMCC__ */
49 #endif /* CPU_X86_MTRR_H */