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286070dd MF |
1 | /* |
2 | * U-boot - cmd_cache_dump.c | |
3 | * | |
4 | * Copyright (c) 2007-2008 Analog Devices Inc. | |
5 | * | |
6 | * Licensed under the GPL-2 or later. | |
7 | */ | |
8 | ||
9 | #include <config.h> | |
10 | #include <common.h> | |
11 | #include <command.h> | |
12 | ||
13 | #include <asm/blackfin.h> | |
14 | #include <asm/mach-common/bits/mpu.h> | |
15 | ||
16 | static int check_limit(const char *type, size_t start_limit, size_t end_limit, size_t start, size_t end) | |
17 | { | |
18 | if (start >= start_limit && start <= end_limit && \ | |
19 | end <= end_limit && end >= start_limit && \ | |
20 | start <= end) | |
21 | return 0; | |
22 | ||
23 | printf("%s limit violation: %zu <= (user:%zu) <= (user:%zu) <= %zu\n", | |
24 | type, start_limit, start, end, end_limit); | |
25 | return 1; | |
26 | } | |
27 | ||
28 | int do_icache_dump(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
29 | { | |
30 | int cache_status = icache_status(); | |
31 | ||
32 | if (cache_status) | |
33 | icache_disable(); | |
34 | ||
35 | uint32_t cmd_base, tag, cache_upper, cache_lower; | |
36 | ||
37 | size_t way, way_start = 0, way_end = 3; | |
38 | size_t sbnk, sbnk_start = 0, sbnk_end = 3; | |
39 | size_t set, set_start = 0, set_end = 31; | |
40 | size_t dw; | |
41 | ||
42 | if (argc > 1) { | |
43 | way_start = way_end = simple_strtoul(argv[1], NULL, 10); | |
44 | if (argc > 2) { | |
45 | sbnk_start = sbnk_end = simple_strtoul(argv[2], NULL, 10); | |
46 | if (argc > 3) | |
47 | set_start = set_end = simple_strtoul(argv[3], NULL, 10); | |
48 | } | |
49 | } | |
50 | ||
51 | if (check_limit("way", 0, 3, way_start, way_end) || \ | |
52 | check_limit("subbank", 0, 3, sbnk_start, sbnk_end) || \ | |
53 | check_limit("set", 0, 31, set_start, set_end)) | |
54 | return 1; | |
55 | ||
56 | puts("Way:Subbank:Set: [valid-tag lower upper] {invalid-tag lower upper}...\n"); | |
57 | ||
58 | for (way = way_start; way <= way_end; ++way) { | |
59 | for (sbnk = sbnk_start; sbnk <= sbnk_end; ++sbnk) { | |
60 | for (set = set_start; set <= set_end; ++set) { | |
61 | printf("%zu:%zu:%2zu: ", way, sbnk, set); | |
62 | for (dw = 0; dw < 4; ++dw) { | |
63 | if (ctrlc()) | |
64 | return 1; | |
65 | ||
66 | cmd_base = \ | |
67 | (way << 26) | \ | |
68 | (sbnk << 16) | \ | |
69 | (set << 5) | \ | |
70 | (dw << 3); | |
71 | ||
72 | /* first read the tag */ | |
73 | bfin_write_ITEST_COMMAND(cmd_base | 0x0); | |
74 | SSYNC(); | |
75 | tag = bfin_read_ITEST_DATA0(); | |
76 | printf("%c%08x ", (tag & 0x1 ? ' ' : '{'), tag); | |
77 | ||
78 | /* grab the data at this loc */ | |
79 | bfin_write_ITEST_COMMAND(cmd_base | 0x4); | |
80 | SSYNC(); | |
81 | cache_lower = bfin_read_ITEST_DATA0(); | |
82 | cache_upper = bfin_read_ITEST_DATA1(); | |
83 | printf("%08x %08x%c ", cache_lower, cache_upper, (tag & 0x1 ? ' ' : '}')); | |
84 | } | |
85 | puts("\n"); | |
86 | } | |
87 | } | |
88 | } | |
89 | ||
90 | if (cache_status) | |
91 | icache_enable(); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | U_BOOT_CMD(icache_dump, 4, 0, do_icache_dump, | |
97 | "icache_dump - dump current instruction cache\n", | |
98 | "[way] [subbank] [set]"); | |
99 | ||
100 | int do_dcache_dump(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
101 | { | |
102 | u32 way, bank, subbank, set; | |
103 | u32 status, addr; | |
104 | u32 dmem_ctl = bfin_read_DMEM_CONTROL(); | |
105 | ||
106 | for (bank = 0; bank < 2; ++bank) { | |
107 | if (!(dmem_ctl & (1 << (DMC1_P - bank)))) | |
108 | continue; | |
109 | ||
110 | for (way = 0; way < 2; ++way) | |
111 | for (subbank = 0; subbank < 4; ++subbank) { | |
112 | printf("%i:%i:%i:\t", bank, way, subbank); | |
113 | for (set = 0; set < 64; ++set) { | |
114 | ||
115 | if (ctrlc()) | |
116 | return 1; | |
117 | ||
118 | /* retrieve a cache tag */ | |
119 | bfin_write_DTEST_COMMAND( | |
120 | way << 26 | | |
121 | bank << 23 | | |
122 | subbank << 16 | | |
123 | set << 5 | |
124 | ); | |
125 | CSYNC(); | |
126 | status = bfin_read_DTEST_DATA0(); | |
127 | ||
128 | /* construct the address using the tag */ | |
129 | addr = (status & 0xFFFFC800) | (subbank << 12) | (set << 5); | |
130 | ||
131 | /* show it */ | |
132 | if (set && !(set % 4)) | |
133 | puts("\n\t"); | |
134 | printf("%c%08x%c%08x%c ", (status & 0x1 ? '[' : '{'), status, (status & 0x2 ? 'd' : ' '), addr, (status & 0x1 ? ']' : '}')); | |
135 | } | |
136 | puts("\n"); | |
137 | } | |
138 | } | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | U_BOOT_CMD(dcache_dump, 4, 0, do_dcache_dump, | |
144 | "dcache_dump - dump current data cache\n", | |
145 | "[bank] [way] [subbank] [set]"); |