wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2005 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | * |
| 23 | * The test exercises SDRAM accesses in burst mode |
| 24 | */ |
| 25 | |
| 26 | #include <common.h> |
| 27 | #include <exports.h> |
| 28 | |
| 29 | #include <commproc.h> |
| 30 | #include <asm/mmu.h> |
| 31 | #include <asm/processor.h> |
| 32 | |
| 33 | #include <serial.h> |
| 34 | #include <watchdog.h> |
| 35 | |
| 36 | #include "test_burst.h" |
| 37 | |
| 38 | /* 8 MB test region of physical RAM */ |
| 39 | #define TEST_PADDR 0x00800000 |
| 40 | /* The uncached virtual region */ |
| 41 | #define TEST_VADDR_NC 0x00800000 |
| 42 | /* The cached virtual region */ |
| 43 | #define TEST_VADDR_C 0x01000000 |
| 44 | /* When an error is detected, the address where the error has been found, |
| 45 | and also the current and the expected data will be written to |
| 46 | the following flash address |
| 47 | */ |
| 48 | #define TEST_FLASH_ADDR 0x40100000 |
| 49 | |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 50 | /* Define GPIO ports to signal start of burst transfers and errors */ |
| 51 | #ifdef CONFIG_LWMON |
| 52 | /* Use PD.8 to signal start of burst transfers */ |
| 53 | #define GPIO1_DAT (((volatile immap_t *)CFG_IMMR)->im_ioport.iop_pddat) |
| 54 | #define GPIO1_BIT 0x0080 |
| 55 | /* Configure PD.8 as general purpose output */ |
| 56 | #define GPIO1_INIT \ |
| 57 | ((volatile immap_t *)CFG_IMMR)->im_ioport.iop_pdpar &= ~GPIO1_BIT; \ |
| 58 | ((volatile immap_t *)CFG_IMMR)->im_ioport.iop_pddir |= GPIO1_BIT; |
| 59 | /* Use PD.9 to signal error */ |
| 60 | #define GPIO2_DAT (((volatile immap_t *)CFG_IMMR)->im_ioport.iop_pddat) |
| 61 | #define GPIO2_BIT 0x0040 |
| 62 | /* Configure PD.9 as general purpose output */ |
| 63 | #define GPIO2_INIT \ |
| 64 | ((volatile immap_t *)CFG_IMMR)->im_ioport.iop_pdpar &= ~GPIO2_BIT; \ |
| 65 | ((volatile immap_t *)CFG_IMMR)->im_ioport.iop_pddir |= GPIO2_BIT; |
| 66 | #endif /* CONFIG_LWMON */ |
| 67 | |
| 68 | |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 69 | static void test_prepare (void); |
| 70 | static int test_burst_start (unsigned long size, unsigned long pattern); |
| 71 | static void test_map_8M (unsigned long paddr, unsigned long vaddr, int cached); |
| 72 | static int test_mmu_is_on(void); |
| 73 | static void test_desc(unsigned long size); |
| 74 | static void test_error(char * step, volatile void * addr, unsigned long val, unsigned long pattern); |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 75 | static void signal_init(void); |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 76 | static void signal_start(void); |
| 77 | static void signal_error(void); |
| 78 | static void test_usage(void); |
| 79 | |
| 80 | static unsigned long test_pattern [] = { |
| 81 | 0x00000000, |
| 82 | 0xffffffff, |
| 83 | 0x55555555, |
| 84 | 0xaaaaaaaa, |
| 85 | }; |
| 86 | |
| 87 | |
| 88 | int test_burst (int argc, char *argv[]) |
| 89 | { |
| 90 | unsigned long size = CACHE_LINE_SIZE; |
wdenk | f593f46 | 2005-05-23 10:49:50 +0000 | [diff] [blame] | 91 | unsigned int pass = 0; |
| 92 | int res = 0; |
| 93 | int i, j; |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 94 | |
wdenk | f593f46 | 2005-05-23 10:49:50 +0000 | [diff] [blame] | 95 | if (argc == 3) { |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 96 | char * d; |
| 97 | for (size = 0, d = argv[1]; *d >= '0' && *d <= '9'; d++) { |
| 98 | size *= 10; |
| 99 | size += *d - '0'; |
| 100 | } |
| 101 | if (size == 0 || *d) { |
| 102 | test_usage(); |
| 103 | return 1; |
| 104 | } |
wdenk | f593f46 | 2005-05-23 10:49:50 +0000 | [diff] [blame] | 105 | for (d = argv[2]; *d >= '0' && *d <= '9'; d++) { |
| 106 | pass *= 10; |
| 107 | pass += *d - '0'; |
| 108 | } |
| 109 | if (*d) { |
| 110 | test_usage(); |
| 111 | return 1; |
| 112 | } |
| 113 | } else if (argc > 3) { |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 114 | test_usage(); |
| 115 | return 1; |
| 116 | } |
| 117 | |
| 118 | size += (CACHE_LINE_SIZE - 1); |
| 119 | size &= ~(CACHE_LINE_SIZE - 1); |
| 120 | |
| 121 | if (!test_mmu_is_on()) { |
| 122 | test_prepare(); |
| 123 | } |
| 124 | |
| 125 | test_desc(size); |
| 126 | |
wdenk | f593f46 | 2005-05-23 10:49:50 +0000 | [diff] [blame] | 127 | for (j = 0; !pass || j < pass; j++) { |
| 128 | for (i = 0; i < sizeof(test_pattern) / sizeof(test_pattern[0]); |
| 129 | i++) { |
| 130 | res = test_burst_start(size, test_pattern[i]); |
| 131 | if (res != 0) { |
| 132 | goto Done; |
| 133 | } |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 134 | } |
wdenk | f593f46 | 2005-05-23 10:49:50 +0000 | [diff] [blame] | 135 | |
| 136 | printf ("Iteration #%d passed\n", j + 1); |
| 137 | |
| 138 | if (tstc() && 0x03 == getc()) |
| 139 | break; |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 140 | } |
| 141 | Done: |
| 142 | return res; |
| 143 | } |
| 144 | |
| 145 | static void test_prepare (void) |
| 146 | { |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 147 | printf ("\n"); |
| 148 | |
| 149 | caches_init(); |
| 150 | disable_interrupts(); |
| 151 | mmu_init(); |
| 152 | |
| 153 | printf ("Interrupts are disabled\n"); |
| 154 | printf ("I-Cache is ON\n"); |
| 155 | printf ("D-Cache is ON\n"); |
| 156 | printf ("MMU is ON\n"); |
| 157 | |
| 158 | printf ("\n"); |
| 159 | |
| 160 | test_map_8M (TEST_PADDR, TEST_VADDR_NC, 0); |
| 161 | test_map_8M (TEST_PADDR, TEST_VADDR_C, 1); |
| 162 | |
| 163 | test_map_8M (TEST_FLASH_ADDR & 0xFF800000, TEST_FLASH_ADDR & 0xFF800000, 0); |
| 164 | |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 165 | /* Configure GPIO ports */ |
| 166 | signal_init(); |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | static int test_burst_start (unsigned long size, unsigned long pattern) |
| 170 | { |
| 171 | volatile unsigned long * vaddr_c = (unsigned long *)TEST_VADDR_C; |
| 172 | volatile unsigned long * vaddr_nc = (unsigned long *)TEST_VADDR_NC; |
| 173 | int i, n; |
| 174 | int res = 1; |
| 175 | |
Wolfgang Denk | 8d54188 | 2008-07-10 13:16:09 +0200 | [diff] [blame] | 176 | printf ("Test pattern %08lx ...", pattern); |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 177 | |
| 178 | n = size / 4; |
| 179 | |
| 180 | for (i = 0; i < n; i ++) { |
| 181 | vaddr_c [i] = pattern; |
| 182 | } |
| 183 | signal_start(); |
| 184 | flush_dcache_range((unsigned long)vaddr_c, (unsigned long)(vaddr_c + n) - 1); |
| 185 | |
| 186 | for (i = 0; i < n; i ++) { |
| 187 | register unsigned long tmp = vaddr_nc [i]; |
| 188 | if (tmp != pattern) { |
| 189 | test_error("2a", vaddr_nc + i, tmp, pattern); |
| 190 | goto Done; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | for (i = 0; i < n; i ++) { |
| 195 | register unsigned long tmp = vaddr_c [i]; |
| 196 | if (tmp != pattern) { |
| 197 | test_error("2b", vaddr_c + i, tmp, pattern); |
| 198 | goto Done; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | for (i = 0; i < n; i ++) { |
| 203 | vaddr_nc [i] = pattern; |
| 204 | } |
| 205 | |
| 206 | for (i = 0; i < n; i ++) { |
| 207 | register unsigned long tmp = vaddr_nc [i]; |
| 208 | if (tmp != pattern) { |
| 209 | test_error("3a", vaddr_nc + i, tmp, pattern); |
| 210 | goto Done; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | signal_start(); |
| 215 | for (i = 0; i < n; i ++) { |
| 216 | register unsigned long tmp = vaddr_c [i]; |
| 217 | if (tmp != pattern) { |
| 218 | test_error("3b", vaddr_c + i, tmp, pattern); |
| 219 | goto Done; |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | res = 0; |
| 224 | Done: |
| 225 | printf(" %s\n", res == 0 ? "OK" : ""); |
| 226 | |
| 227 | return res; |
| 228 | } |
| 229 | |
| 230 | static void test_map_8M (unsigned long paddr, unsigned long vaddr, int cached) |
| 231 | { |
| 232 | mtspr (MD_EPN, (vaddr & 0xFFFFFC00) | MI_EVALID); |
| 233 | mtspr (MD_TWC, MI_PS8MEG | MI_SVALID); |
| 234 | mtspr (MD_RPN, (paddr & 0xFFFFF000) | MI_BOOTINIT | (cached ? 0 : 2)); |
| 235 | mtspr (MD_AP, MI_Kp); |
| 236 | } |
| 237 | |
| 238 | static int test_mmu_is_on(void) |
| 239 | { |
| 240 | unsigned long msr; |
| 241 | |
| 242 | asm volatile("mfmsr %0" : "=r" (msr) :); |
| 243 | |
| 244 | return msr & MSR_DR; |
| 245 | } |
| 246 | |
| 247 | static void test_desc(unsigned long size) |
| 248 | { |
| 249 | printf( |
| 250 | "The following tests will be conducted:\n" |
Wolfgang Denk | 8d54188 | 2008-07-10 13:16:09 +0200 | [diff] [blame] | 251 | "1) Map %ld-byte region of physical RAM at 0x%08x\n" |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 252 | " into two virtual regions:\n" |
| 253 | " one cached at 0x%08x and\n" |
| 254 | " the the other uncached at 0x%08x.\n", |
| 255 | size, TEST_PADDR, TEST_VADDR_NC, TEST_VADDR_C); |
| 256 | |
| 257 | puts( |
| 258 | "2) Fill the cached region with a pattern, and flush the cache\n" |
| 259 | "2a) Check the uncached region to match the pattern\n" |
| 260 | "2b) Check the cached region to match the pattern\n" |
| 261 | "3) Fill the uncached region with a pattern\n" |
| 262 | "3a) Check the cached region to match the pattern\n" |
| 263 | "3b) Check the uncached region to match the pattern\n" |
| 264 | "2b) Change the patterns and go to step 2\n" |
| 265 | "\n" |
| 266 | ); |
| 267 | } |
| 268 | |
| 269 | static void test_error( |
| 270 | char * step, volatile void * addr, unsigned long val, unsigned long pattern) |
| 271 | { |
| 272 | volatile unsigned long * p = (void *)TEST_FLASH_ADDR; |
| 273 | |
| 274 | signal_error(); |
| 275 | |
| 276 | p[0] = (unsigned long)addr; |
| 277 | p[1] = val; |
| 278 | p[2] = pattern; |
| 279 | |
Wolfgang Denk | 8d54188 | 2008-07-10 13:16:09 +0200 | [diff] [blame] | 280 | printf ("\nError at step %s, addr %08lx: read %08lx, pattern %08lx", |
| 281 | (unsigned long)step, addr, val, pattern); |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 282 | } |
| 283 | |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 284 | static void signal_init(void) |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 285 | { |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 286 | #if defined(GPIO1_INIT) |
| 287 | GPIO1_INIT; |
| 288 | #endif |
| 289 | #if defined(GPIO2_INIT) |
| 290 | GPIO2_INIT; |
| 291 | #endif |
| 292 | } |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 293 | |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 294 | static void signal_start(void) |
| 295 | { |
| 296 | #if defined(GPIO1_INIT) |
| 297 | if (GPIO1_DAT & GPIO1_BIT) { |
| 298 | GPIO1_DAT &= ~GPIO1_BIT; |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 299 | } else { |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 300 | GPIO1_DAT |= GPIO1_BIT; |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 301 | } |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 302 | #endif |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | static void signal_error(void) |
| 306 | { |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 307 | #if defined(GPIO2_INIT) |
| 308 | if (GPIO2_DAT & GPIO2_BIT) { |
| 309 | GPIO2_DAT &= ~GPIO2_BIT; |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 310 | } else { |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 311 | GPIO2_DAT |= GPIO2_BIT; |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 312 | } |
wdenk | 4e5bc87 | 2005-05-16 14:19:49 +0000 | [diff] [blame] | 313 | #endif |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | static void test_usage(void) |
| 317 | { |
wdenk | f593f46 | 2005-05-23 10:49:50 +0000 | [diff] [blame] | 318 | printf("Usage: go 0x40004 [size] [count]\n"); |
wdenk | e339a7a | 2005-05-07 19:06:32 +0000 | [diff] [blame] | 319 | } |