[u-boot.git] / examples / test_burst.c

/*
 * (C) Copyright 2005
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 * The test exercises SDRAM accesses in burst mode
 */

#include <common.h>
#include <exports.h>

#include <commproc.h>
#include <asm/mmu.h>
#include <asm/processor.h>

#include <serial.h>
#include <watchdog.h>

#include "test_burst.h"

/* 8 MB test region of physical RAM */
#define TEST_PADDR	0x00800000
/* The uncached virtual region */
#define TEST_VADDR_NC	0x00800000
/* The cached virtual region */
#define TEST_VADDR_C	0x01000000
/* When an error is detected, the address where the error has been found,
   and also the current and the expected data will be written to
   the following flash address
*/
#define TEST_FLASH_ADDR	0x40100000

/* Define GPIO ports to signal start of burst transfers and errors */
#ifdef CONFIG_LWMON
/* Use PD.8 to signal start of burst transfers */
#define GPIO1_DAT	(((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddat)
#define GPIO1_BIT	0x0080
/* Configure PD.8 as general purpose output */
#define GPIO1_INIT \
	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pdpar &= ~GPIO1_BIT; \
	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddir |=  GPIO1_BIT;
/* Use PD.9 to signal error */
#define GPIO2_DAT	(((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddat)
#define GPIO2_BIT	0x0040
/* Configure PD.9 as general purpose output */
#define GPIO2_INIT \
	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pdpar &= ~GPIO2_BIT; \
	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddir |=  GPIO2_BIT;
#endif /* CONFIG_LWMON */


static void test_prepare (void);
static int test_burst_start (unsigned long size, unsigned long pattern);
static void test_map_8M (unsigned long paddr, unsigned long vaddr, int cached);
static int test_mmu_is_on(void);
static void test_desc(unsigned long size);
static void test_error(char * step, volatile void * addr, unsigned long val, unsigned long pattern);
static void signal_init(void);
static void signal_start(void);
static void signal_error(void);
static void test_usage(void);

static unsigned long test_pattern [] = {
	0x00000000,
	0xffffffff,
	0x55555555,
	0xaaaaaaaa,
};


int test_burst (int argc, char *argv[])
{
	unsigned long size = CACHE_LINE_SIZE;
	unsigned int pass = 0;
	int res = 0;
	int i, j;

	if (argc == 3) {
		char * d;
		for (size = 0, d = argv[1]; *d >= '0' && *d <= '9'; d++) {
			size *= 10;
			size += *d - '0';
		}
		if (size == 0 || *d) {
			test_usage();
			return 1;
		}
		for (d = argv[2]; *d >= '0' && *d <= '9'; d++) {
			pass *= 10;
			pass += *d - '0';
		}
		if (*d) {
			test_usage();
			return 1;
		}
	} else if (argc > 3) {
		test_usage();
		return 1;
	}

	size +=  (CACHE_LINE_SIZE - 1);
	size &= ~(CACHE_LINE_SIZE - 1);

	if (!test_mmu_is_on()) {
		test_prepare();
	}

	test_desc(size);

	for (j = 0; !pass || j < pass; j++) {
		for (i = 0; i < sizeof(test_pattern) / sizeof(test_pattern[0]);
		     i++) {
			res = test_burst_start(size, test_pattern[i]);
			if (res != 0) {
				goto Done;
			}
		}

		printf ("Iteration #%d passed\n", j + 1);

		if (tstc() && 0x03 == getc())
			break;
	}
Done:
	return res;
}

static void test_prepare (void)
{
	printf ("\n");

	caches_init();
	disable_interrupts();
	mmu_init();

	printf ("Interrupts are disabled\n");
	printf ("I-Cache is ON\n");
	printf ("D-Cache is ON\n");
	printf ("MMU is ON\n");

	printf ("\n");

	test_map_8M (TEST_PADDR, TEST_VADDR_NC, 0);
	test_map_8M (TEST_PADDR, TEST_VADDR_C,  1);

	test_map_8M (TEST_FLASH_ADDR & 0xFF800000, TEST_FLASH_ADDR & 0xFF800000, 0);

	/* Configure GPIO ports */
	signal_init();
}

static int test_burst_start (unsigned long size, unsigned long pattern)
{
	volatile unsigned long * vaddr_c = (unsigned long *)TEST_VADDR_C;
	volatile unsigned long * vaddr_nc = (unsigned long *)TEST_VADDR_NC;
	int i, n;
	int res = 1;

	printf ("Test pattern %08lx ...", pattern);

	n = size / 4;

	for (i = 0; i < n; i ++) {
		vaddr_c [i] = pattern;
	}
	signal_start();
	flush_dcache_range((unsigned long)vaddr_c, (unsigned long)(vaddr_c + n) - 1);

	for (i = 0; i < n; i ++) {
		register unsigned long tmp = vaddr_nc [i];
		if (tmp != pattern) {
			test_error("2a", vaddr_nc + i, tmp, pattern);
			goto Done;
		}
	}

	for (i = 0; i < n; i ++) {
		register unsigned long tmp = vaddr_c [i];
		if (tmp != pattern) {
			test_error("2b", vaddr_c + i, tmp, pattern);
			goto Done;
		}
	}

	for (i = 0; i < n; i ++) {
		vaddr_nc [i] = pattern;
	}

	for (i = 0; i < n; i ++) {
		register unsigned long tmp = vaddr_nc [i];
		if (tmp != pattern) {
			test_error("3a", vaddr_nc + i, tmp, pattern);
			goto Done;
		}
	}

	signal_start();
	for (i = 0; i < n; i ++) {
		register unsigned long tmp = vaddr_c [i];
		if (tmp != pattern) {
			test_error("3b", vaddr_c + i, tmp, pattern);
			goto Done;
		}
	}

	res = 0;
Done:
	printf(" %s\n", res == 0 ? "OK" : "");

	return res;
}

static void test_map_8M (unsigned long paddr, unsigned long vaddr, int cached)
{
	mtspr (MD_EPN, (vaddr & 0xFFFFFC00) | MI_EVALID);
	mtspr (MD_TWC, MI_PS8MEG | MI_SVALID);
	mtspr (MD_RPN, (paddr & 0xFFFFF000) | MI_BOOTINIT | (cached ? 0 : 2));
	mtspr (MD_AP, MI_Kp);
}

static int test_mmu_is_on(void)
{
	unsigned long msr;

	asm volatile("mfmsr %0" : "=r" (msr) :);

	return msr & MSR_DR;
}

static void test_desc(unsigned long size)
{
	printf(
	"The following tests will be conducted:\n"
	"1)  Map %ld-byte region of physical RAM at 0x%08x\n"
	"    into two virtual regions:\n"
	"    one cached at 0x%08x and\n"
	"    the the other uncached at 0x%08x.\n",
	size, TEST_PADDR, TEST_VADDR_NC, TEST_VADDR_C);

	puts(
	"2)  Fill the cached region with a pattern, and flush the cache\n"
	"2a) Check the uncached region to match the pattern\n"
	"2b) Check the cached region to match the pattern\n"
	"3)  Fill the uncached region with a pattern\n"
	"3a) Check the cached region to match the pattern\n"
	"3b) Check the uncached region to match the pattern\n"
	"2b) Change the patterns and go to step 2\n"
	"\n"
	);
}

static void test_error(
	char * step, volatile void * addr, unsigned long val, unsigned long pattern)
{
	volatile unsigned long * p = (void *)TEST_FLASH_ADDR;

	signal_error();

	p[0] = (unsigned long)addr;
	p[1] = val;
	p[2] = pattern;

	printf ("\nError at step %s, addr %08lx: read %08lx, pattern %08lx",
		step, (unsigned long)addr, val, pattern);
}

static void signal_init(void)
{
#if defined(GPIO1_INIT)
	GPIO1_INIT;
#endif
#if defined(GPIO2_INIT)
	GPIO2_INIT;
#endif
}

static void signal_start(void)
{
#if defined(GPIO1_INIT)
	if (GPIO1_DAT & GPIO1_BIT) {
		GPIO1_DAT &= ~GPIO1_BIT;
	} else {
		GPIO1_DAT |= GPIO1_BIT;
	}
#endif
}

static void signal_error(void)
{
#if defined(GPIO2_INIT)
	if (GPIO2_DAT & GPIO2_BIT) {
		GPIO2_DAT &= ~GPIO2_BIT;
	} else {
		GPIO2_DAT |= GPIO2_BIT;
	}
#endif
}

static void test_usage(void)
{
	printf("Usage: go 0x40004 [size] [count]\n");
}
Commit	Line	Data
931da93e WD	1	/*
	2	* (C) Copyright 2005
	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	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
c0176630 WD	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 */
6d0f6bcf	53	#define GPIO1_DAT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddat)
c0176630 WD	54	#define GPIO1_BIT 0x0080
	55	/* Configure PD.8 as general purpose output */
	56	#define GPIO1_INIT \
6d0f6bcf JCPV	57	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pdpar &= ~GPIO1_BIT; \
6d0f6bcf JCPV	58	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddir \|= GPIO1_BIT;
c0176630	59	/* Use PD.9 to signal error */
6d0f6bcf	60	#define GPIO2_DAT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddat)
c0176630 WD	61	#define GPIO2_BIT 0x0040
	62	/* Configure PD.9 as general purpose output */
	63	#define GPIO2_INIT \
6d0f6bcf JCPV	64	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pdpar &= ~GPIO2_BIT; \
6d0f6bcf JCPV	65	((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pddir \|= GPIO2_BIT;
c0176630 WD	66	#endif /* CONFIG_LWMON */
	67
	68
931da93e WD	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);
c0176630	75	static void signal_init(void);
931da93e WD	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;
2eab48f5 WD	91	unsigned int pass = 0;
	92	int res = 0;
	93	int i, j;
931da93e	94
2eab48f5	95	if (argc == 3) {
931da93e WD	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	}
2eab48f5 WD	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) {
931da93e WD	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
2eab48f5 WD	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	}
931da93e	134	}
2eab48f5 WD	135
	136	printf ("Iteration #%d passed\n", j + 1);
	137
	138	if (tstc() && 0x03 == getc())
	139	break;
931da93e WD	140	}
	141	Done:
	142	return res;
	143	}
	144
	145	static void test_prepare (void)
	146	{
931da93e WD	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
c0176630 WD	165	/* Configure GPIO ports */
c0176630 WD	166	signal_init();
931da93e WD	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
06c53bea	176	printf ("Test pattern %08lx ...", pattern);
931da93e WD	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"
06c53bea	251	"1) Map %ld-byte region of physical RAM at 0x%08x\n"
931da93e WD	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
06c53bea	280	printf ("\nError at step %s, addr %08lx: read %08lx, pattern %08lx",
9b55a253	281	step, (unsigned long)addr, val, pattern);
931da93e WD	282	}
931da93e WD	283
c0176630	284	static void signal_init(void)
931da93e	285	{
c0176630 WD	286	#if defined(GPIO1_INIT)
	287	GPIO1_INIT;
	288	#endif
	289	#if defined(GPIO2_INIT)
	290	GPIO2_INIT;
	291	#endif
	292	}
931da93e	293
c0176630 WD	294	static void signal_start(void)
	295	{
	296	#if defined(GPIO1_INIT)
	297	if (GPIO1_DAT & GPIO1_BIT) {
	298	GPIO1_DAT &= ~GPIO1_BIT;
931da93e	299	} else {
c0176630	300	GPIO1_DAT \|= GPIO1_BIT;
931da93e	301	}
c0176630	302	#endif
931da93e WD	303	}
	304
	305	static void signal_error(void)
	306	{
c0176630 WD	307	#if defined(GPIO2_INIT)
	308	if (GPIO2_DAT & GPIO2_BIT) {
	309	GPIO2_DAT &= ~GPIO2_BIT;
931da93e	310	} else {
c0176630	311	GPIO2_DAT \|= GPIO2_BIT;
931da93e	312	}
c0176630	313	#endif
931da93e WD	314	}
	315
	316	static void test_usage(void)
	317	{
2eab48f5	318	printf("Usage: go 0x40004 [size] [count]\n");
931da93e	319	}