1 /*
2  * Generic support for queying CPU info
3  *
4  * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
5  * Copyright (C) 2007-2009 PetaLogix
6  * Copyright (C) 2007 John Williams <jwilliams@itee.uq.edu.au>
7  *
8  * This file is subject to the terms and conditions of the GNU General
9  * Public License. See the file COPYING in the main directory of this
10  * archive for more details.
11  */
12 
13 #ifndef _ASM_MICROBLAZE_CPUINFO_H
14 #define _ASM_MICROBLAZE_CPUINFO_H
15 
16 #include <asm/prom.h>
17 
18 /* CPU Version and FPGA Family code conversion table type */
19 struct cpu_ver_key {
20 	const char *s;
21 	const unsigned k;
22 };
23 
24 extern const struct cpu_ver_key cpu_ver_lookup[];
25 
26 struct family_string_key {
27 	const char *s;
28 	const unsigned k;
29 };
30 
31 extern const struct family_string_key family_string_lookup[];
32 
33 struct cpuinfo {
34 	/* Core CPU configuration */
35 	u32 use_instr;
36 	u32 use_mult;
37 	u32 use_fpu;
38 	u32 use_exc;
39 	u32 ver_code;
40 	u32 mmu;
41 
42 	/* CPU caches */
43 	u32 use_icache;
44 	u32 icache_tagbits;
45 	u32 icache_write;
46 	u32 icache_line;
47 	u32 icache_size;
48 	unsigned long icache_base;
49 	unsigned long icache_high;
50 
51 	u32 use_dcache;
52 	u32 dcache_tagbits;
53 	u32 dcache_write;
54 	u32 dcache_line;
55 	u32 dcache_size;
56 	unsigned long dcache_base;
57 	unsigned long dcache_high;
58 
59 	/* Bus connections */
60 	u32 use_dopb;
61 	u32 use_iopb;
62 	u32 use_dlmb;
63 	u32 use_ilmb;
64 	u32 num_fsl;
65 
66 	/* CPU interrupt line info */
67 	u32 irq_edge;
68 	u32 irq_positive;
69 
70 	u32 area_optimised;
71 
72 	/* HW debug support */
73 	u32 hw_debug;
74 	u32 num_pc_brk;
75 	u32 num_rd_brk;
76 	u32 num_wr_brk;
77 	u32 cpu_clock_freq; /* store real freq of cpu */
78 	u32 freq_div_hz; /* store freq/HZ */
79 
80 	/* FPGA family */
81 	u32 fpga_family_code;
82 
83 	/* User define */
84 	u32 pvr_user1;
85 	u32 pvr_user2;
86 };
87 
88 extern struct cpuinfo cpuinfo;
89 
90 /* fwd declarations of the various CPUinfo populators */
91 void setup_cpuinfo(void);
92 
93 void set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu);
94 void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu);
95 
96 static inline unsigned int fcpu(struct device_node *cpu, char *n)
97 {
98 	int *val;
99 	return (val = (int *) of_get_property(cpu, n, NULL)) ? *val : 0;
100 }
101 
102 #endif /* _ASM_MICROBLAZE_CPUINFO_H */
103