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wdenk931da932005-05-07 19:06:32 +00001/*
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
wdenkc0176632005-05-16 14:19:49 +000050/* 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
wdenk931da932005-05-07 19:06:32 +000069static void test_prepare (void);
70static int test_burst_start (unsigned long size, unsigned long pattern);
71static void test_map_8M (unsigned long paddr, unsigned long vaddr, int cached);
72static int test_mmu_is_on(void);
73static void test_desc(unsigned long size);
74static void test_error(char * step, volatile void * addr, unsigned long val, unsigned long pattern);
wdenkc0176632005-05-16 14:19:49 +000075static void signal_init(void);
wdenk931da932005-05-07 19:06:32 +000076static void signal_start(void);
77static void signal_error(void);
78static void test_usage(void);
79
80static unsigned long test_pattern [] = {
81 0x00000000,
82 0xffffffff,
83 0x55555555,
84 0xaaaaaaaa,
85};
86
87
88int test_burst (int argc, char *argv[])
89{
90 unsigned long size = CACHE_LINE_SIZE;
wdenk2eab48f2005-05-23 10:49:50 +000091 unsigned int pass = 0;
92 int res = 0;
93 int i, j;
wdenk931da932005-05-07 19:06:32 +000094
wdenk2eab48f2005-05-23 10:49:50 +000095 if (argc == 3) {
wdenk931da932005-05-07 19:06:32 +000096 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 }
wdenk2eab48f2005-05-23 10:49:50 +0000105 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) {
wdenk931da932005-05-07 19:06:32 +0000114 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
wdenk2eab48f2005-05-23 10:49:50 +0000127 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 }
wdenk931da932005-05-07 19:06:32 +0000134 }
wdenk2eab48f2005-05-23 10:49:50 +0000135
136 printf ("Iteration #%d passed\n", j + 1);
137
138 if (tstc() && 0x03 == getc())
139 break;
wdenk931da932005-05-07 19:06:32 +0000140 }
141Done:
142 return res;
143}
144
145static void test_prepare (void)
146{
wdenk931da932005-05-07 19:06:32 +0000147 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
wdenkc0176632005-05-16 14:19:49 +0000165 /* Configure GPIO ports */
166 signal_init();
wdenk931da932005-05-07 19:06:32 +0000167}
168
169static 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 Denk06c53be2008-07-10 13:16:09 +0200176 printf ("Test pattern %08lx ...", pattern);
wdenk931da932005-05-07 19:06:32 +0000177
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;
224Done:
225 printf(" %s\n", res == 0 ? "OK" : "");
226
227 return res;
228}
229
230static 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
238static 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
247static void test_desc(unsigned long size)
248{
249 printf(
250 "The following tests will be conducted:\n"
Wolfgang Denk06c53be2008-07-10 13:16:09 +0200251 "1) Map %ld-byte region of physical RAM at 0x%08x\n"
wdenk931da932005-05-07 19:06:32 +0000252 " 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
269static 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 Denk06c53be2008-07-10 13:16:09 +0200280 printf ("\nError at step %s, addr %08lx: read %08lx, pattern %08lx",
281 (unsigned long)step, addr, val, pattern);
wdenk931da932005-05-07 19:06:32 +0000282}
283
wdenkc0176632005-05-16 14:19:49 +0000284static void signal_init(void)
285{
286#if defined(GPIO1_INIT)
287 GPIO1_INIT;
288#endif
289#if defined(GPIO2_INIT)
290 GPIO2_INIT;
291#endif
292}
293
wdenk931da932005-05-07 19:06:32 +0000294static void signal_start(void)
295{
wdenkc0176632005-05-16 14:19:49 +0000296#if defined(GPIO1_INIT)
297 if (GPIO1_DAT & GPIO1_BIT) {
298 GPIO1_DAT &= ~GPIO1_BIT;
wdenk931da932005-05-07 19:06:32 +0000299 } else {
wdenkc0176632005-05-16 14:19:49 +0000300 GPIO1_DAT |= GPIO1_BIT;
wdenk931da932005-05-07 19:06:32 +0000301 }
wdenkc0176632005-05-16 14:19:49 +0000302#endif
wdenk931da932005-05-07 19:06:32 +0000303}
304
305static void signal_error(void)
306{
wdenkc0176632005-05-16 14:19:49 +0000307#if defined(GPIO2_INIT)
308 if (GPIO2_DAT & GPIO2_BIT) {
309 GPIO2_DAT &= ~GPIO2_BIT;
wdenk931da932005-05-07 19:06:32 +0000310 } else {
wdenkc0176632005-05-16 14:19:49 +0000311 GPIO2_DAT |= GPIO2_BIT;
wdenk931da932005-05-07 19:06:32 +0000312 }
wdenkc0176632005-05-16 14:19:49 +0000313#endif
wdenk931da932005-05-07 19:06:32 +0000314}
315
316static void test_usage(void)
317{
wdenk2eab48f2005-05-23 10:49:50 +0000318 printf("Usage: go 0x40004 [size] [count]\n");
wdenk931da932005-05-07 19:06:32 +0000319}