diff options
author | Michal Simek <monstr@monstr.eu> | 2009-03-27 09:25:18 -0400 |
---|---|---|
committer | Michal Simek <monstr@monstr.eu> | 2009-03-27 09:25:18 -0400 |
commit | b0c62724a52a4f541bfe77c678a0229d7a7c6844 (patch) | |
tree | d281231c4a17978762fe587c409e084db375047d | |
parent | 93139b1cf85924a3cc758c9a83b8c7b689987729 (diff) |
microblaze_v8: PVR support, cpuinfo support
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
-rw-r--r-- | arch/microblaze/include/asm/pvr.h | 209 | ||||
-rw-r--r-- | arch/microblaze/kernel/cpu/mb.c | 148 | ||||
-rw-r--r-- | arch/microblaze/kernel/cpu/pvr.c | 81 |
3 files changed, 438 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/pvr.h b/arch/microblaze/include/asm/pvr.h new file mode 100644 index 000000000000..66f1b30dd097 --- /dev/null +++ b/arch/microblaze/include/asm/pvr.h | |||
@@ -0,0 +1,209 @@ | |||
1 | /* | ||
2 | * Support for the MicroBlaze PVR (Processor Version Register) | ||
3 | * | ||
4 | * Copyright (C) 2009 Michal Simek <monstr@monstr.eu> | ||
5 | * Copyright (C) 2007 John Williams <john.williams@petalogix.com> | ||
6 | * Copyright (C) 2007 - 2009 PetaLogix | ||
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_PVR_H | ||
14 | #define _ASM_MICROBLAZE_PVR_H | ||
15 | |||
16 | #define PVR_MSR_BIT 0x400 | ||
17 | |||
18 | struct pvr_s { | ||
19 | unsigned pvr[16]; | ||
20 | }; | ||
21 | |||
22 | /* The following taken from Xilinx's standalone BSP pvr.h */ | ||
23 | |||
24 | /* Basic PVR mask */ | ||
25 | #define PVR0_PVR_FULL_MASK 0x80000000 | ||
26 | #define PVR0_USE_BARREL_MASK 0x40000000 | ||
27 | #define PVR0_USE_DIV_MASK 0x20000000 | ||
28 | #define PVR0_USE_HW_MUL_MASK 0x10000000 | ||
29 | #define PVR0_USE_FPU_MASK 0x08000000 | ||
30 | #define PVR0_USE_EXC_MASK 0x04000000 | ||
31 | #define PVR0_USE_ICACHE_MASK 0x02000000 | ||
32 | #define PVR0_USE_DCACHE_MASK 0x01000000 | ||
33 | #define PVR0_USE_MMU 0x00800000 /* new */ | ||
34 | #define PVR0_VERSION_MASK 0x0000FF00 | ||
35 | #define PVR0_USER1_MASK 0x000000FF | ||
36 | |||
37 | /* User 2 PVR mask */ | ||
38 | #define PVR1_USER2_MASK 0xFFFFFFFF | ||
39 | |||
40 | /* Configuration PVR masks */ | ||
41 | #define PVR2_D_OPB_MASK 0x80000000 | ||
42 | #define PVR2_D_LMB_MASK 0x40000000 | ||
43 | #define PVR2_I_OPB_MASK 0x20000000 | ||
44 | #define PVR2_I_LMB_MASK 0x10000000 | ||
45 | #define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000 | ||
46 | #define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000 | ||
47 | #define PVR2_D_PLB_MASK 0x02000000 /* new */ | ||
48 | #define PVR2_I_PLB_MASK 0x01000000 /* new */ | ||
49 | #define PVR2_INTERCONNECT 0x00800000 /* new */ | ||
50 | #define PVR2_USE_EXTEND_FSL 0x00080000 /* new */ | ||
51 | #define PVR2_USE_FSL_EXC 0x00040000 /* new */ | ||
52 | #define PVR2_USE_MSR_INSTR 0x00020000 | ||
53 | #define PVR2_USE_PCMP_INSTR 0x00010000 | ||
54 | #define PVR2_AREA_OPTIMISED 0x00008000 | ||
55 | #define PVR2_USE_BARREL_MASK 0x00004000 | ||
56 | #define PVR2_USE_DIV_MASK 0x00002000 | ||
57 | #define PVR2_USE_HW_MUL_MASK 0x00001000 | ||
58 | #define PVR2_USE_FPU_MASK 0x00000800 | ||
59 | #define PVR2_USE_MUL64_MASK 0x00000400 | ||
60 | #define PVR2_USE_FPU2_MASK 0x00000200 /* new */ | ||
61 | #define PVR2_USE_IPLBEXC 0x00000100 | ||
62 | #define PVR2_USE_DPLBEXC 0x00000080 | ||
63 | #define PVR2_OPCODE_0x0_ILL_MASK 0x00000040 | ||
64 | #define PVR2_UNALIGNED_EXC_MASK 0x00000020 | ||
65 | #define PVR2_ILL_OPCODE_EXC_MASK 0x00000010 | ||
66 | #define PVR2_IOPB_BUS_EXC_MASK 0x00000008 | ||
67 | #define PVR2_DOPB_BUS_EXC_MASK 0x00000004 | ||
68 | #define PVR2_DIV_ZERO_EXC_MASK 0x00000002 | ||
69 | #define PVR2_FPU_EXC_MASK 0x00000001 | ||
70 | |||
71 | /* Debug and exception PVR masks */ | ||
72 | #define PVR3_DEBUG_ENABLED_MASK 0x80000000 | ||
73 | #define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000 | ||
74 | #define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000 | ||
75 | #define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000 | ||
76 | #define PVR3_FSL_LINKS_MASK 0x00000380 | ||
77 | |||
78 | /* ICache config PVR masks */ | ||
79 | #define PVR4_USE_ICACHE_MASK 0x80000000 | ||
80 | #define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000 | ||
81 | #define PVR4_ICACHE_USE_FSL_MASK 0x02000000 | ||
82 | #define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000 | ||
83 | #define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000 | ||
84 | #define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000 | ||
85 | |||
86 | /* DCache config PVR masks */ | ||
87 | #define PVR5_USE_DCACHE_MASK 0x80000000 | ||
88 | #define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000 | ||
89 | #define PVR5_DCACHE_USE_FSL_MASK 0x02000000 | ||
90 | #define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000 | ||
91 | #define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000 | ||
92 | #define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000 | ||
93 | |||
94 | /* ICache base address PVR mask */ | ||
95 | #define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF | ||
96 | |||
97 | /* ICache high address PVR mask */ | ||
98 | #define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF | ||
99 | |||
100 | /* DCache base address PVR mask */ | ||
101 | #define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF | ||
102 | |||
103 | /* DCache high address PVR mask */ | ||
104 | #define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF | ||
105 | |||
106 | /* Target family PVR mask */ | ||
107 | #define PVR10_TARGET_FAMILY_MASK 0xFF000000 | ||
108 | |||
109 | /* MMU descrtiption */ | ||
110 | #define PVR11_USE_MMU 0xC0000000 | ||
111 | #define PVR11_MMU_ITLB_SIZE 0x38000000 | ||
112 | #define PVR11_MMU_DTLB_SIZE 0x07000000 | ||
113 | #define PVR11_MMU_TLB_ACCESS 0x00C00000 | ||
114 | #define PVR11_MMU_ZONES 0x003C0000 | ||
115 | /* MSR Reset value PVR mask */ | ||
116 | #define PVR11_MSR_RESET_VALUE_MASK 0x000007FF | ||
117 | |||
118 | |||
119 | /* PVR access macros */ | ||
120 | #define PVR_IS_FULL(pvr) (pvr.pvr[0] & PVR0_PVR_FULL_MASK) | ||
121 | #define PVR_USE_BARREL(pvr) (pvr.pvr[0] & PVR0_USE_BARREL_MASK) | ||
122 | #define PVR_USE_DIV(pvr) (pvr.pvr[0] & PVR0_USE_DIV_MASK) | ||
123 | #define PVR_USE_HW_MUL(pvr) (pvr.pvr[0] & PVR0_USE_HW_MUL_MASK) | ||
124 | #define PVR_USE_FPU(pvr) (pvr.pvr[0] & PVR0_USE_FPU_MASK) | ||
125 | #define PVR_USE_FPU2(pvr) (pvr.pvr[2] & PVR2_USE_FPU2_MASK) | ||
126 | #define PVR_USE_ICACHE(pvr) (pvr.pvr[0] & PVR0_USE_ICACHE_MASK) | ||
127 | #define PVR_USE_DCACHE(pvr) (pvr.pvr[0] & PVR0_USE_DCACHE_MASK) | ||
128 | #define PVR_VERSION(pvr) ((pvr.pvr[0] & PVR0_VERSION_MASK) >> 8) | ||
129 | #define PVR_USER1(pvr) (pvr.pvr[0] & PVR0_USER1_MASK) | ||
130 | #define PVR_USER2(pvr) (pvr.pvr[1] & PVR1_USER2_MASK) | ||
131 | |||
132 | #define PVR_D_OPB(pvr) (pvr.pvr[2] & PVR2_D_OPB_MASK) | ||
133 | #define PVR_D_LMB(pvr) (pvr.pvr[2] & PVR2_D_LMB_MASK) | ||
134 | #define PVR_I_OPB(pvr) (pvr.pvr[2] & PVR2_I_OPB_MASK) | ||
135 | #define PVR_I_LMB(pvr) (pvr.pvr[2] & PVR2_I_LMB_MASK) | ||
136 | #define PVR_INTERRUPT_IS_EDGE(pvr) \ | ||
137 | (pvr.pvr[2] & PVR2_INTERRUPT_IS_EDGE_MASK) | ||
138 | #define PVR_EDGE_IS_POSITIVE(pvr) \ | ||
139 | (pvr.pvr[2] & PVR2_EDGE_IS_POSITIVE_MASK) | ||
140 | #define PVR_USE_MSR_INSTR(pvr) (pvr.pvr[2] & PVR2_USE_MSR_INSTR) | ||
141 | #define PVR_USE_PCMP_INSTR(pvr) (pvr.pvr[2] & PVR2_USE_PCMP_INSTR) | ||
142 | #define PVR_AREA_OPTIMISED(pvr) (pvr.pvr[2] & PVR2_AREA_OPTIMISED) | ||
143 | #define PVR_USE_MUL64(pvr) (pvr.pvr[2] & PVR2_USE_MUL64_MASK) | ||
144 | #define PVR_OPCODE_0x0_ILLEGAL(pvr) \ | ||
145 | (pvr.pvr[2] & PVR2_OPCODE_0x0_ILL_MASK) | ||
146 | #define PVR_UNALIGNED_EXCEPTION(pvr) \ | ||
147 | (pvr.pvr[2] & PVR2_UNALIGNED_EXC_MASK) | ||
148 | #define PVR_ILL_OPCODE_EXCEPTION(pvr) \ | ||
149 | (pvr.pvr[2] & PVR2_ILL_OPCODE_EXC_MASK) | ||
150 | #define PVR_IOPB_BUS_EXCEPTION(pvr) \ | ||
151 | (pvr.pvr[2] & PVR2_IOPB_BUS_EXC_MASK) | ||
152 | #define PVR_DOPB_BUS_EXCEPTION(pvr) \ | ||
153 | (pvr.pvr[2] & PVR2_DOPB_BUS_EXC_MASK) | ||
154 | #define PVR_DIV_ZERO_EXCEPTION(pvr) \ | ||
155 | (pvr.pvr[2] & PVR2_DIV_ZERO_EXC_MASK) | ||
156 | #define PVR_FPU_EXCEPTION(pvr) (pvr.pvr[2] & PVR2_FPU_EXC_MASK) | ||
157 | #define PVR_FSL_EXCEPTION(pvr) (pvr.pvr[2] & PVR2_USE_EXTEND_FSL) | ||
158 | |||
159 | #define PVR_DEBUG_ENABLED(pvr) (pvr.pvr[3] & PVR3_DEBUG_ENABLED_MASK) | ||
160 | #define PVR_NUMBER_OF_PC_BRK(pvr) \ | ||
161 | ((pvr.pvr[3] & PVR3_NUMBER_OF_PC_BRK_MASK) >> 25) | ||
162 | #define PVR_NUMBER_OF_RD_ADDR_BRK(pvr) \ | ||
163 | ((pvr.pvr[3] & PVR3_NUMBER_OF_RD_ADDR_BRK_MASK) >> 19) | ||
164 | #define PVR_NUMBER_OF_WR_ADDR_BRK(pvr) \ | ||
165 | ((pvr.pvr[3] & PVR3_NUMBER_OF_WR_ADDR_BRK_MASK) >> 13) | ||
166 | #define PVR_FSL_LINKS(pvr) ((pvr.pvr[3] & PVR3_FSL_LINKS_MASK) >> 7) | ||
167 | |||
168 | #define PVR_ICACHE_ADDR_TAG_BITS(pvr) \ | ||
169 | ((pvr.pvr[4] & PVR4_ICACHE_ADDR_TAG_BITS_MASK) >> 26) | ||
170 | #define PVR_ICACHE_USE_FSL(pvr) (pvr.pvr[4] & PVR4_ICACHE_USE_FSL_MASK) | ||
171 | #define PVR_ICACHE_ALLOW_WR(pvr) (pvr.pvr[4] & PVR4_ICACHE_ALLOW_WR_MASK) | ||
172 | #define PVR_ICACHE_LINE_LEN(pvr) \ | ||
173 | (1 << ((pvr.pvr[4] & PVR4_ICACHE_LINE_LEN_MASK) >> 21)) | ||
174 | #define PVR_ICACHE_BYTE_SIZE(pvr) \ | ||
175 | (1 << ((pvr.pvr[4] & PVR4_ICACHE_BYTE_SIZE_MASK) >> 16)) | ||
176 | |||
177 | #define PVR_DCACHE_ADDR_TAG_BITS(pvr) \ | ||
178 | ((pvr.pvr[5] & PVR5_DCACHE_ADDR_TAG_BITS_MASK) >> 26) | ||
179 | #define PVR_DCACHE_USE_FSL(pvr) (pvr.pvr[5] & PVR5_DCACHE_USE_FSL_MASK) | ||
180 | #define PVR_DCACHE_ALLOW_WR(pvr) (pvr.pvr[5] & PVR5_DCACHE_ALLOW_WR_MASK) | ||
181 | #define PVR_DCACHE_LINE_LEN(pvr) \ | ||
182 | (1 << ((pvr.pvr[5] & PVR5_DCACHE_LINE_LEN_MASK) >> 21)) | ||
183 | #define PVR_DCACHE_BYTE_SIZE(pvr) \ | ||
184 | (1 << ((pvr.pvr[5] & PVR5_DCACHE_BYTE_SIZE_MASK) >> 16)) | ||
185 | |||
186 | |||
187 | #define PVR_ICACHE_BASEADDR(pvr) (pvr.pvr[6] & PVR6_ICACHE_BASEADDR_MASK) | ||
188 | #define PVR_ICACHE_HIGHADDR(pvr) (pvr.pvr[7] & PVR7_ICACHE_HIGHADDR_MASK) | ||
189 | |||
190 | #define PVR_DCACHE_BASEADDR(pvr) (pvr.pvr[8] & PVR8_DCACHE_BASEADDR_MASK) | ||
191 | #define PVR_DCACHE_HIGHADDR(pvr) (pvr.pvr[9] & PVR9_DCACHE_HIGHADDR_MASK) | ||
192 | |||
193 | #define PVR_TARGET_FAMILY(pvr) ((pvr.pvr[10] & PVR10_TARGET_FAMILY_MASK) >> 24) | ||
194 | |||
195 | #define PVR_MSR_RESET_VALUE(pvr) \ | ||
196 | (pvr.pvr[11] & PVR11_MSR_RESET_VALUE_MASK) | ||
197 | |||
198 | /* mmu */ | ||
199 | #define PVR_USE_MMU(pvr) ((pvr.pvr[11] & PVR11_USE_MMU) >> 30) | ||
200 | #define PVR_MMU_ITLB_SIZE(pvr) (pvr.pvr[11] & PVR11_MMU_ITLB_SIZE) | ||
201 | #define PVR_MMU_DTLB_SIZE(pvr) (pvr.pvr[11] & PVR11_MMU_DTLB_SIZE) | ||
202 | #define PVR_MMU_TLB_ACCESS(pvr) (pvr.pvr[11] & PVR11_MMU_TLB_ACCESS) | ||
203 | #define PVR_MMU_ZONES(pvr) (pvr.pvr[11] & PVR11_MMU_ZONES) | ||
204 | |||
205 | |||
206 | int cpu_has_pvr(void); | ||
207 | void get_pvr(struct pvr_s *pvr); | ||
208 | |||
209 | #endif /* _ASM_MICROBLAZE_PVR_H */ | ||
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c new file mode 100644 index 000000000000..3b6212bdc8dc --- /dev/null +++ b/arch/microblaze/kernel/cpu/mb.c | |||
@@ -0,0 +1,148 @@ | |||
1 | /* | ||
2 | * CPU-version specific code | ||
3 | * | ||
4 | * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> | ||
5 | * Copyright (C) 2006-2009 PetaLogix | ||
6 | * | ||
7 | * This file is subject to the terms and conditions of the GNU General Public | ||
8 | * License. See the file "COPYING" in the main directory of this archive | ||
9 | * for more details. | ||
10 | */ | ||
11 | |||
12 | #include <linux/init.h> | ||
13 | #include <linux/string.h> | ||
14 | #include <linux/seq_file.h> | ||
15 | #include <linux/cpu.h> | ||
16 | #include <linux/initrd.h> | ||
17 | |||
18 | #include <linux/bug.h> | ||
19 | #include <asm/cpuinfo.h> | ||
20 | #include <linux/delay.h> | ||
21 | #include <linux/io.h> | ||
22 | #include <asm/page.h> | ||
23 | #include <linux/param.h> | ||
24 | #include <asm/pvr.h> | ||
25 | #include <asm/sections.h> | ||
26 | #include <asm/setup.h> | ||
27 | |||
28 | static int show_cpuinfo(struct seq_file *m, void *v) | ||
29 | { | ||
30 | int count = 0; | ||
31 | char *fpga_family = "Unknown"; | ||
32 | char *cpu_ver = "Unknown"; | ||
33 | int i; | ||
34 | |||
35 | /* Denormalised to get the fpga family string */ | ||
36 | for (i = 0; family_string_lookup[i].s != NULL; i++) { | ||
37 | if (cpuinfo.fpga_family_code == family_string_lookup[i].k) { | ||
38 | fpga_family = (char *)family_string_lookup[i].s; | ||
39 | break; | ||
40 | } | ||
41 | } | ||
42 | |||
43 | /* Denormalised to get the hw version string */ | ||
44 | for (i = 0; cpu_ver_lookup[i].s != NULL; i++) { | ||
45 | if (cpuinfo.ver_code == cpu_ver_lookup[i].k) { | ||
46 | cpu_ver = (char *)cpu_ver_lookup[i].s; | ||
47 | break; | ||
48 | } | ||
49 | } | ||
50 | |||
51 | count = seq_printf(m, | ||
52 | "CPU-Family: MicroBlaze\n" | ||
53 | "FPGA-Arch: %s\n" | ||
54 | "CPU-Ver: %s\n" | ||
55 | "CPU-MHz: %d.%02d\n" | ||
56 | "BogoMips: %lu.%02lu\n", | ||
57 | fpga_family, | ||
58 | cpu_ver, | ||
59 | cpuinfo.cpu_clock_freq / | ||
60 | 1000000, | ||
61 | cpuinfo.cpu_clock_freq % | ||
62 | 1000000, | ||
63 | loops_per_jiffy / (500000 / HZ), | ||
64 | (loops_per_jiffy / (5000 / HZ)) % 100); | ||
65 | |||
66 | count += seq_printf(m, | ||
67 | "HW:\n Shift:\t\t%s\n" | ||
68 | " MSR:\t\t%s\n" | ||
69 | " PCMP:\t\t%s\n" | ||
70 | " DIV:\t\t%s\n", | ||
71 | (cpuinfo.use_instr & PVR0_USE_BARREL_MASK) ? "yes" : "no", | ||
72 | (cpuinfo.use_instr & PVR2_USE_MSR_INSTR) ? "yes" : "no", | ||
73 | (cpuinfo.use_instr & PVR2_USE_PCMP_INSTR) ? "yes" : "no", | ||
74 | (cpuinfo.use_instr & PVR0_USE_DIV_MASK) ? "yes" : "no"); | ||
75 | |||
76 | count += seq_printf(m, | ||
77 | " MMU:\t\t%x\n", | ||
78 | cpuinfo.mmu); | ||
79 | |||
80 | count += seq_printf(m, | ||
81 | " MUL:\t\t%s\n" | ||
82 | " FPU:\t\t%s\n", | ||
83 | (cpuinfo.use_mult & PVR2_USE_MUL64_MASK) ? "v2" : | ||
84 | (cpuinfo.use_mult & PVR0_USE_HW_MUL_MASK) ? "v1" : "no", | ||
85 | (cpuinfo.use_fpu & PVR2_USE_FPU2_MASK) ? "v2" : | ||
86 | (cpuinfo.use_fpu & PVR0_USE_FPU_MASK) ? "v1" : "no"); | ||
87 | |||
88 | count += seq_printf(m, | ||
89 | " Exc:\t\t%s%s%s%s%s%s%s%s\n", | ||
90 | (cpuinfo.use_exc & PVR2_OPCODE_0x0_ILL_MASK) ? "op0x0 " : "", | ||
91 | (cpuinfo.use_exc & PVR2_UNALIGNED_EXC_MASK) ? "unal " : "", | ||
92 | (cpuinfo.use_exc & PVR2_ILL_OPCODE_EXC_MASK) ? "ill " : "", | ||
93 | (cpuinfo.use_exc & PVR2_IOPB_BUS_EXC_MASK) ? "iopb " : "", | ||
94 | (cpuinfo.use_exc & PVR2_DOPB_BUS_EXC_MASK) ? "dopb " : "", | ||
95 | (cpuinfo.use_exc & PVR2_DIV_ZERO_EXC_MASK) ? "zero " : "", | ||
96 | (cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "", | ||
97 | (cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : ""); | ||
98 | |||
99 | if (cpuinfo.use_icache) | ||
100 | count += seq_printf(m, | ||
101 | "Icache:\t\t%ukB\n", | ||
102 | cpuinfo.icache_size >> 10); | ||
103 | else | ||
104 | count += seq_printf(m, "Icache:\t\tno\n"); | ||
105 | |||
106 | if (cpuinfo.use_dcache) | ||
107 | count += seq_printf(m, | ||
108 | "Dcache:\t\t%ukB\n", | ||
109 | cpuinfo.dcache_size >> 10); | ||
110 | else | ||
111 | count += seq_printf(m, "Dcache:\t\tno\n"); | ||
112 | |||
113 | count += seq_printf(m, | ||
114 | "HW-Debug:\t%s\n", | ||
115 | cpuinfo.hw_debug ? "yes" : "no"); | ||
116 | |||
117 | count += seq_printf(m, | ||
118 | "PVR-USR1:\t%x\n" | ||
119 | "PVR-USR2:\t%x\n", | ||
120 | cpuinfo.pvr_user1, | ||
121 | cpuinfo.pvr_user2); | ||
122 | |||
123 | return 0; | ||
124 | } | ||
125 | |||
126 | static void *c_start(struct seq_file *m, loff_t *pos) | ||
127 | { | ||
128 | int i = *pos; | ||
129 | |||
130 | return i < NR_CPUS ? (void *) (i + 1) : NULL; | ||
131 | } | ||
132 | |||
133 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | ||
134 | { | ||
135 | ++*pos; | ||
136 | return c_start(m, pos); | ||
137 | } | ||
138 | |||
139 | static void c_stop(struct seq_file *m, void *v) | ||
140 | { | ||
141 | } | ||
142 | |||
143 | const struct seq_operations cpuinfo_op = { | ||
144 | .start = c_start, | ||
145 | .next = c_next, | ||
146 | .stop = c_stop, | ||
147 | .show = show_cpuinfo, | ||
148 | }; | ||
diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c new file mode 100644 index 000000000000..c9a4340ddd53 --- /dev/null +++ b/arch/microblaze/kernel/cpu/pvr.c | |||
@@ -0,0 +1,81 @@ | |||
1 | /* | ||
2 | * Support for MicroBlaze PVR (processor version register) | ||
3 | * | ||
4 | * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> | ||
5 | * Copyright (C) 2007-2009 PetaLogix | ||
6 | * Copyright (C) 2007 John Williams <john.williams@petalogix.com> | ||
7 | * | ||
8 | * This file is subject to the terms and conditions of the GNU General Public | ||
9 | * License. See the file "COPYING" in the main directory of this archive | ||
10 | * for more details. | ||
11 | */ | ||
12 | |||
13 | #include <linux/kernel.h> | ||
14 | #include <linux/compiler.h> | ||
15 | #include <asm/system.h> | ||
16 | #include <asm/exceptions.h> | ||
17 | #include <asm/pvr.h> | ||
18 | |||
19 | /* | ||
20 | * Until we get an assembler that knows about the pvr registers, | ||
21 | * this horrible cruft will have to do. | ||
22 | * That hardcoded opcode is mfs r3, rpvrNN | ||
23 | */ | ||
24 | |||
25 | #define get_single_pvr(pvrid, val) \ | ||
26 | { \ | ||
27 | register unsigned tmp __asm__("r3"); \ | ||
28 | tmp = 0x0; /* Prevent warning about unused */ \ | ||
29 | __asm__ __volatile__ ( \ | ||
30 | ".byte 0x94,0x60,0xa0, " #pvrid "\n\t" \ | ||
31 | : "=r" (tmp) : : "memory"); \ | ||
32 | val = tmp; \ | ||
33 | } | ||
34 | |||
35 | /* | ||
36 | * Does the CPU support the PVR register? | ||
37 | * return value: | ||
38 | * 0: no PVR | ||
39 | * 1: simple PVR | ||
40 | * 2: full PVR | ||
41 | * | ||
42 | * This must work on all CPU versions, including those before the | ||
43 | * PVR was even an option. | ||
44 | */ | ||
45 | |||
46 | int cpu_has_pvr(void) | ||
47 | { | ||
48 | unsigned flags; | ||
49 | unsigned pvr0; | ||
50 | |||
51 | local_save_flags(flags); | ||
52 | |||
53 | /* PVR bit in MSR tells us if there is any support */ | ||
54 | if (!(flags & PVR_MSR_BIT)) | ||
55 | return 0; | ||
56 | |||
57 | get_single_pvr(0x00, pvr0); | ||
58 | pr_debug("%s: pvr0 is 0x%08x\n", __func__, pvr0); | ||
59 | |||
60 | if (pvr0 & PVR0_PVR_FULL_MASK) | ||
61 | return 1; | ||
62 | |||
63 | /* for partial PVR use static cpuinfo */ | ||
64 | return 2; | ||
65 | } | ||
66 | |||
67 | void get_pvr(struct pvr_s *p) | ||
68 | { | ||
69 | get_single_pvr(0, p->pvr[0]); | ||
70 | get_single_pvr(1, p->pvr[1]); | ||
71 | get_single_pvr(2, p->pvr[2]); | ||
72 | get_single_pvr(3, p->pvr[3]); | ||
73 | get_single_pvr(4, p->pvr[4]); | ||
74 | get_single_pvr(5, p->pvr[5]); | ||
75 | get_single_pvr(6, p->pvr[6]); | ||
76 | get_single_pvr(7, p->pvr[7]); | ||
77 | get_single_pvr(8, p->pvr[8]); | ||
78 | get_single_pvr(9, p->pvr[9]); | ||
79 | get_single_pvr(10, p->pvr[10]); | ||
80 | get_single_pvr(11, p->pvr[11]); | ||
81 | } | ||