post/board/lwmon5/gdc.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
  *
  * Developed for DENX Software Engineering GmbH
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>

 /* This test attempts to verify board GDC. A scratch register tested, then
  * simple memory test (get_ram_size()) run over GDC memory.
  */

 #include <post.h>
 #include <watchdog.h>
 #include <asm/io.h>
 #include <video.h>

 DECLARE_GLOBAL_DATA_PTR;

 #define GDC_SCRATCH_REG	0xC1FF8044
 #define GDC_VERSION_REG	0xC1FF8084
 #define GDC_HOST_BASE	0xC1FC0000
 #define GDC_RAM_START	0xC0000000
 #define GDC_RAM_END	(GDC_HOST_BASE - 1)
 #define GDC_RAM_SIZE	(GDC_RAM_END - GDC_RAM_START)

 #if CONFIG_POST & CONFIG_SYS_POST_BSPEC4

 const static unsigned long pattern[] = {
 	0xffffffff,
 	0xaaaaaaaa,
 	0xcccccccc,
 	0xf0f0f0f0,
 	0xff00ff00,
 	0xffff0000,
 	0x0000ffff,
 	0x00ff00ff,
 	0x0f0f0f0f,
 	0x33333333,
 	0x55555555,
 	0x00000000
 };

 const static unsigned long otherpattern = 0x01234567;

 /* test write/read og a given LIME Register */
 static int gdc_test_reg_one(uint value)
 {
 	uint read_value;

 	/* write test pattern */
 	out_be32((void *)GDC_SCRATCH_REG, value);
 	/* read other location (protect against data lines capacity) */
 	in_be32((void *)GDC_RAM_START);
 	/* verify test pattern */
 	read_value = in_be32((void *)GDC_SCRATCH_REG);
 	if (read_value != value) {
 		post_log("GDC SCRATCH test failed write %08X, read %08X\n",
 			 value, read_value);
 	}

 	return (read_value != value);
 }

 /* test with a given static 32 bit pattern in a given memory addressrange */
 static int gdc_post_test1(ulong *start, ulong size, ulong val)
 {
 	int ret = 0;
 	ulong i = 0;
 	ulong *mem = start;
 	ulong readback;

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		mem[i] = val;
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		readback = mem[i];
 		if (readback != val) {
 			post_log("GDC Memory error at %08x, "
 				 "wrote %08x, read %08x !\n",
 				 mem + i, val, readback);
 			ret = -1;
 			break;
 		}
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	return ret;
 }

 /* test with dynamic 32 bit pattern in a given memory addressrange */
 static int gdc_post_test2(ulong *start, ulong size)
 {
 	int ret = 0;
 	ulong i = 0;
 	ulong *mem = start;
 	ulong readback;

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		mem[i] = 1 << (i % 32);
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		readback = mem[i];
 		if (readback != 1 << (i % 32)) {
 			post_log("GDC Memory error at %08x, "
 				 "wrote %08x, read %08x !\n",
 				 mem + i, 1 << (i % 32), readback);
 			ret = -1;
 			break;
 		}
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	return ret;
 }

 /* test with dynamic 32 bit pattern in a given memory addressrange */
 static int gdc_post_test3(ulong *start, ulong size)
 {
 	int ret = 0;
 	ulong i = 0;
 	ulong *mem = start;
 	ulong readback;

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		mem[i] = i;
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		readback = mem[i];
 		if (readback != i) {
 			post_log("GDC Memory error at %08x, "
 				 "wrote %08x, read %08x !\n",
 				 mem + i, i, readback);
 			ret = -1;
 			break;
 		}
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	return ret;
 }

 /* test with dynamic 32 bit pattern in a given memory addressrange */
 static int gdc_post_test4(ulong *start, ulong size)
 {
 	int ret = 0;
 	ulong i = 0;
 	ulong *mem = start;
 	ulong readback;

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		mem[i] = ~i;
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	for (i = 0; i < size / sizeof(ulong); i++) {
 		readback = mem[i];
 		if (readback != ~i) {
 			post_log("GDC Memory error at %08x, "
 				 "wrote %08x, read %08x !\n",
 				 mem + i, ~i, readback);
 			ret = -1;
 			break;
 		}
 		if (i % 1024 == 0)
 			WATCHDOG_RESET();
 	}

 	return ret;
 }

 /* do some patterntests in a given addressrange */
 int gdc_mem_test(ulong *start, ulong size)
 {
 	int ret = 0;

 	/*
 	 * check addressrange and do different static and dynamic
 	 * pattern tests with it.
 	 */
 	if (((void *)start) + size <= (void *)GDC_RAM_END) {
 		if (ret == 0)
 			ret = gdc_post_test1(start, size, 0x00000000);

 		if (ret == 0)
 			ret = gdc_post_test1(start, size, 0xffffffff);

 		if (ret == 0)
 			ret = gdc_post_test1(start, size, 0x55555555);

 		if (ret == 0)
 			ret = gdc_post_test1(start, size, 0xaaaaaaaa);

 		if (ret == 0)
 			ret = gdc_post_test2(start, size);

 		if (ret == 0)
 			ret = gdc_post_test3(start, size);

 		if (ret == 0)
 			ret = gdc_post_test4(start, size);
 	}

 	return ret;
 }

 /* test function of gdc memory addresslines*/
 static int gdc_post_addrline(ulong *address, ulong *base, ulong size)
 {
 	ulong *target;
 	ulong *end;
 	ulong readback = 0;
 	ulong xor = 0;
 	int ret = 0;

 	end = (ulong *)((ulong)base + size);

 	for (xor = sizeof(long); xor > 0; xor <<= 1) {
 		target = (ulong *)((ulong)address ^ xor);
 		if ((target >= base) && (target < end)) {
 			*address = ~*target;
 			readback = *target;
 		}

 		if (readback == *address) {
 			post_log("GDC Memory (address line) error at %08x"
 				 "XOR value %08x !\n",
 				 address, target , xor);
 			ret = -1;
 			break;
 		}
 	}

 	return ret;
 }

 static int gdc_post_dataline(ulong *address)
 {
 	unsigned long temp32 = 0;
 	int i = 0;
 	int ret = 0;

 	for (i = 0; i < ARRAY_SIZE(pattern); i++) {
 		*address = pattern[i];
 		/*
 		 * Put a different pattern on the data lines: otherwise they
 		 * may float long enough to read back what we wrote.
 		 */
 		*(address + 1) = otherpattern;
 		temp32 = *address;

 		if (temp32 != pattern[i]){
 			post_log("GDC Memory (date line) error at %08x, "
 				 "wrote %08x, read %08x !\n",
 				 address, pattern[i], temp32);
 			ret = 1;
 		}
 	}

 	return ret;
 }

 /* Verify GDC, get memory size, verify GDC memory */
 int gdc_post_test(int flags)
 {
 	uint   	old_value;
 	int 	i = 0;
 	int    	ret = 0;

 	post_log("\n");
 	old_value = in_be32((void *)GDC_SCRATCH_REG);

 	/*
 	 * GPIOC2 register behaviour: the LIME graphics processor has a
 	 * maximum of 5 GPIO ports that can be used in this hardware
 	 * configuration. Thus only the  bits  for these 5 GPIOs can be
 	 * activated in the GPIOC2 register. All other bits will always be
 	 * read as zero.
 	 */
 	if (gdc_test_reg_one(0x00150015))
 		ret = 1;
 	if (gdc_test_reg_one(0x000A000A))
 		ret = 1;

 	out_be32((void *)GDC_SCRATCH_REG, old_value);

 	old_value = in_be32((void *)GDC_VERSION_REG);
 	post_log("GDC chip version %u.%u, year %04X\n",
 		 (old_value >> 8) & 0xFF, old_value & 0xFF,
 		 (old_value >> 16) & 0xFFFF);

 	old_value = get_ram_size((void *)GDC_RAM_START,
 				 0x02000000);

 	debug("GDC RAM size (ist):  %d bytes\n", old_value);
 	debug("GDC RAM size (soll): %d bytes\n", GDC_RAM_SIZE);
 	post_log("GDC RAM size: %d bytes\n", old_value);

 	/* Test SDRAM datalines */
 	if (gdc_post_dataline((ulong *)GDC_RAM_START)) {
 		ret = 1;
 		goto out;
 	}
 	WATCHDOG_RESET();

 	/* Test SDRAM adresslines */
 	if (gdc_post_addrline((ulong *)GDC_RAM_START,
 			      (ulong *)GDC_RAM_START, GDC_RAM_SIZE)) {
 		ret = 1;
 		goto out;
 	}
 	WATCHDOG_RESET();
 	if (gdc_post_addrline((ulong *)GDC_RAM_END - sizeof(long),
 			      (ulong *)GDC_RAM_START, GDC_RAM_SIZE)) {
 		ret = 1;
 		goto out;
 	}
 	WATCHDOG_RESET();

 	/* memory pattern test */
 	debug("GDC Memory test (flags %8x:%8x)\n", flags,
 	      POST_SLOWTEST | POST_MANUAL);

 	if (flags & POST_MANUAL) {
 		debug("Full memory test\n");
 		if (gdc_mem_test((ulong *)GDC_RAM_START, GDC_RAM_SIZE)) {
 			ret = 1;
 			goto out;
 		}
 		/* load splashscreen again */
 	} else {
 		debug("smart memory test\n");
 		for (i = 0; i < (GDC_RAM_SIZE >> 20) && ret == 0; i++) {
 			if (ret == 0)
 				ret = gdc_mem_test((ulong *)(GDC_RAM_START +
 							     (i << 20)),
 						   0x800);
 			if (ret == 0)
 				ret = gdc_mem_test((ulong *)(GDC_RAM_START +
 							     (i << 20) + 0xff800),
 						   0x800);
 		}
 	}
 	WATCHDOG_RESET();

 out:
 	return ret;
 }
 #endif /* CONFIG_POST & CONFIG_SYS_POST_BSPEC4 */
	/*
	* (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
	*
	* Developed for DENX Software Engineering GmbH
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/
	#include <common.h>

	/* This test attempts to verify board GDC. A scratch register tested, then
	* simple memory test (get_ram_size()) run over GDC memory.
	*/

	#include <post.h>
	#include <watchdog.h>
	#include <asm/io.h>
	#include <video.h>

	DECLARE_GLOBAL_DATA_PTR;

	#define GDC_SCRATCH_REG 0xC1FF8044
	#define GDC_VERSION_REG 0xC1FF8084
	#define GDC_HOST_BASE 0xC1FC0000
	#define GDC_RAM_START 0xC0000000
	#define GDC_RAM_END (GDC_HOST_BASE - 1)
	#define GDC_RAM_SIZE (GDC_RAM_END - GDC_RAM_START)

	#if CONFIG_POST & CONFIG_SYS_POST_BSPEC4

	const static unsigned long pattern[] = {
	0xffffffff,
	0xaaaaaaaa,
	0xcccccccc,
	0xf0f0f0f0,
	0xff00ff00,
	0xffff0000,
	0x0000ffff,
	0x00ff00ff,
	0x0f0f0f0f,
	0x33333333,
	0x55555555,
	0x00000000
	};

	const static unsigned long otherpattern = 0x01234567;

	/* test write/read og a given LIME Register */
	static int gdc_test_reg_one(uint value)
	{
	uint read_value;

	/* write test pattern */
	out_be32((void *)GDC_SCRATCH_REG, value);
	/* read other location (protect against data lines capacity) */
	in_be32((void *)GDC_RAM_START);
	/* verify test pattern */
	read_value = in_be32((void *)GDC_SCRATCH_REG);
	if (read_value != value) {
	post_log("GDC SCRATCH test failed write %08X, read %08X\n",
	value, read_value);
	}

	return (read_value != value);
	}

	/* test with a given static 32 bit pattern in a given memory addressrange */
	static int gdc_post_test1(ulong *start, ulong size, ulong val)
	{
	int ret = 0;
	ulong i = 0;
	ulong *mem = start;
	ulong readback;

	for (i = 0; i < size / sizeof(ulong); i++) {
	mem[i] = val;
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	for (i = 0; i < size / sizeof(ulong); i++) {
	readback = mem[i];
	if (readback != val) {
	post_log("GDC Memory error at %08x, "
	"wrote %08x, read %08x !\n",
	mem + i, val, readback);
	ret = -1;
	break;
	}
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	return ret;
	}

	/* test with dynamic 32 bit pattern in a given memory addressrange */
	static int gdc_post_test2(ulong *start, ulong size)
	{
	int ret = 0;
	ulong i = 0;
	ulong *mem = start;
	ulong readback;

	for (i = 0; i < size / sizeof(ulong); i++) {
	mem[i] = 1 << (i % 32);
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	for (i = 0; i < size / sizeof(ulong); i++) {
	readback = mem[i];
	if (readback != 1 << (i % 32)) {
	post_log("GDC Memory error at %08x, "
	"wrote %08x, read %08x !\n",
	mem + i, 1 << (i % 32), readback);
	ret = -1;
	break;
	}
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	return ret;
	}

	/* test with dynamic 32 bit pattern in a given memory addressrange */
	static int gdc_post_test3(ulong *start, ulong size)
	{
	int ret = 0;
	ulong i = 0;
	ulong *mem = start;
	ulong readback;

	for (i = 0; i < size / sizeof(ulong); i++) {
	mem[i] = i;
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	for (i = 0; i < size / sizeof(ulong); i++) {
	readback = mem[i];
	if (readback != i) {
	post_log("GDC Memory error at %08x, "
	"wrote %08x, read %08x !\n",
	mem + i, i, readback);
	ret = -1;
	break;
	}
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	return ret;
	}

	/* test with dynamic 32 bit pattern in a given memory addressrange */
	static int gdc_post_test4(ulong *start, ulong size)
	{
	int ret = 0;
	ulong i = 0;
	ulong *mem = start;
	ulong readback;

	for (i = 0; i < size / sizeof(ulong); i++) {
	mem[i] = ~i;
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	for (i = 0; i < size / sizeof(ulong); i++) {
	readback = mem[i];
	if (readback != ~i) {
	post_log("GDC Memory error at %08x, "
	"wrote %08x, read %08x !\n",
	mem + i, ~i, readback);
	ret = -1;
	break;
	}
	if (i % 1024 == 0)
	WATCHDOG_RESET();
	}

	return ret;
	}

	/* do some patterntests in a given addressrange */
	int gdc_mem_test(ulong *start, ulong size)
	{
	int ret = 0;

	/*
	* check addressrange and do different static and dynamic
	* pattern tests with it.
	*/
	if (((void )start) + size <= (void )GDC_RAM_END) {
	if (ret == 0)
	ret = gdc_post_test1(start, size, 0x00000000);

	if (ret == 0)
	ret = gdc_post_test1(start, size, 0xffffffff);

	if (ret == 0)
	ret = gdc_post_test1(start, size, 0x55555555);

	if (ret == 0)
	ret = gdc_post_test1(start, size, 0xaaaaaaaa);

	if (ret == 0)
	ret = gdc_post_test2(start, size);

	if (ret == 0)
	ret = gdc_post_test3(start, size);

	if (ret == 0)
	ret = gdc_post_test4(start, size);
	}

	return ret;
	}

	/* test function of gdc memory addresslines*/
	static int gdc_post_addrline(ulong address, ulong base, ulong size)
	{
	ulong *target;
	ulong *end;
	ulong readback = 0;
	ulong xor = 0;
	int ret = 0;

	end = (ulong *)((ulong)base + size);

	for (xor = sizeof(long); xor > 0; xor <<= 1) {
	target = (ulong *)((ulong)address ^ xor);
	if ((target >= base) && (target < end)) {
	address = ~target;
	readback = *target;
	}

	if (readback == *address) {
	post_log("GDC Memory (address line) error at %08x"
	"XOR value %08x !\n",
	address, target , xor);
	ret = -1;
	break;
	}
	}

	return ret;
	}

	static int gdc_post_dataline(ulong *address)
	{
	unsigned long temp32 = 0;
	int i = 0;
	int ret = 0;

	for (i = 0; i < ARRAY_SIZE(pattern); i++) {
	*address = pattern[i];
	/*
	* Put a different pattern on the data lines: otherwise they
	* may float long enough to read back what we wrote.
	*/
	*(address + 1) = otherpattern;
	temp32 = *address;

	if (temp32 != pattern[i]){
	post_log("GDC Memory (date line) error at %08x, "
	"wrote %08x, read %08x !\n",
	address, pattern[i], temp32);
	ret = 1;
	}
	}

	return ret;
	}

	/* Verify GDC, get memory size, verify GDC memory */
	int gdc_post_test(int flags)
	{
	uint old_value;
	int i = 0;
	int ret = 0;

	post_log("\n");
	old_value = in_be32((void *)GDC_SCRATCH_REG);

	/*
	* GPIOC2 register behaviour: the LIME graphics processor has a
	* maximum of 5 GPIO ports that can be used in this hardware
	* configuration. Thus only the bits for these 5 GPIOs can be
	* activated in the GPIOC2 register. All other bits will always be
	* read as zero.
	*/
	if (gdc_test_reg_one(0x00150015))
	ret = 1;
	if (gdc_test_reg_one(0x000A000A))
	ret = 1;

	out_be32((void *)GDC_SCRATCH_REG, old_value);

	old_value = in_be32((void *)GDC_VERSION_REG);
	post_log("GDC chip version %u.%u, year %04X\n",
	(old_value >> 8) & 0xFF, old_value & 0xFF,
	(old_value >> 16) & 0xFFFF);

	old_value = get_ram_size((void *)GDC_RAM_START,
	0x02000000);

	debug("GDC RAM size (ist): %d bytes\n", old_value);
	debug("GDC RAM size (soll): %d bytes\n", GDC_RAM_SIZE);
	post_log("GDC RAM size: %d bytes\n", old_value);

	/* Test SDRAM datalines */
	if (gdc_post_dataline((ulong *)GDC_RAM_START)) {
	ret = 1;
	goto out;
	}
	WATCHDOG_RESET();

	/* Test SDRAM adresslines */
	if (gdc_post_addrline((ulong *)GDC_RAM_START,
	(ulong *)GDC_RAM_START, GDC_RAM_SIZE)) {
	ret = 1;
	goto out;
	}
	WATCHDOG_RESET();
	if (gdc_post_addrline((ulong *)GDC_RAM_END - sizeof(long),
	(ulong *)GDC_RAM_START, GDC_RAM_SIZE)) {
	ret = 1;
	goto out;
	}
	WATCHDOG_RESET();

	/* memory pattern test */
	debug("GDC Memory test (flags %8x:%8x)\n", flags,
	POST_SLOWTEST \| POST_MANUAL);

	if (flags & POST_MANUAL) {
	debug("Full memory test\n");
	if (gdc_mem_test((ulong *)GDC_RAM_START, GDC_RAM_SIZE)) {
	ret = 1;
	goto out;
	}
	/* load splashscreen again */
	} else {
	debug("smart memory test\n");
	for (i = 0; i < (GDC_RAM_SIZE >> 20) && ret == 0; i++) {
	if (ret == 0)
	ret = gdc_mem_test((ulong *)(GDC_RAM_START +
	(i << 20)),
	0x800);
	if (ret == 0)
	ret = gdc_mem_test((ulong *)(GDC_RAM_START +
	(i << 20) + 0xff800),
	0x800);
	}
	}
	WATCHDOG_RESET();

	out:
	return ret;
	}
	#endif /* CONFIG_POST & CONFIG_SYS_POST_BSPEC4 */