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 <linux/of.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 	u32 mmu_privins;
42 	u32 endian;
43 
44 	/* CPU caches */
45 	u32 use_icache;
46 	u32 icache_tagbits;
47 	u32 icache_write;
48 	u32 icache_line_length;
49 	u32 icache_size;
50 	unsigned long icache_base;
51 	unsigned long icache_high;
52 
53 	u32 use_dcache;
54 	u32 dcache_tagbits;
55 	u32 dcache_write;
56 	u32 dcache_line_length;
57 	u32 dcache_size;
58 	u32 dcache_wb;
59 	unsigned long dcache_base;
60 	unsigned long dcache_high;
61 
62 	/* Bus connections */
63 	u32 use_dopb;
64 	u32 use_iopb;
65 	u32 use_dlmb;
66 	u32 use_ilmb;
67 	u32 num_fsl;
68 
69 	/* CPU interrupt line info */
70 	u32 irq_edge;
71 	u32 irq_positive;
72 
73 	u32 area_optimised;
74 
75 	/* HW debug support */
76 	u32 hw_debug;
77 	u32 num_pc_brk;
78 	u32 num_rd_brk;
79 	u32 num_wr_brk;
80 	u32 cpu_clock_freq; /* store real freq of cpu */
81 
82 	/* FPGA family */
83 	u32 fpga_family_code;
84 
85 	/* User define */
86 	u32 pvr_user1;
87 	u32 pvr_user2;
88 };
89 
90 extern struct cpuinfo cpuinfo;
91 
92 /* fwd declarations of the various CPUinfo populators */
93 void setup_cpuinfo(void);
94 void setup_cpuinfo_clk(void);
95 
96 void set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu);
97 void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu);
98 
99 static inline unsigned int fcpu(struct device_node *cpu, char *n)
100 {
101 	u32 val = 0;
102 
103 	of_property_read_u32(cpu, n, &val);
104 
105 	return val;
106 }
107 
108 #endif /* _ASM_MICROBLAZE_CPUINFO_H */
109