From 9adb5ab13beee028d812837b04d928142afc083a Mon Sep 17 00:00:00 2001
From: Jens Ahrensfeld <jens@jayfield.org>
Date: Sun, 31 May 2015 10:23:44 +0000
Subject: [PATCH] - improved test

git-svn-id: http://moon:8086/svn/mips@41 a8ebac50-d88d-4704-bea3-6648445a41b3
---
 src/bootloader/test.c | 80 +++++++++++++++++++++++++++++++++++++------
 1 file changed, 70 insertions(+), 10 deletions(-)

diff --git a/src/bootloader/test.c b/src/bootloader/test.c
index 70a323b..527a1eb 100644
--- a/src/bootloader/test.c
+++ b/src/bootloader/test.c
@@ -1,5 +1,8 @@
 #include "libsys_boot.h"
 
+#define ARRAY_SIZE(a)	(sizeof(a)/sizeof(*a))
+#define SDRAM_SIZE		(32*1024*1024)
+
 void handler3(void)
 {
 	volatile uint32_t *pUART0_stat = (uint32_t*)SYS_UART_STAT;
@@ -14,13 +17,29 @@ void handler3(void)
 
 void main()
 {
-	uint32_t i;
+	uint32_t i, j;
 	uint32_t data;
 	uint8_t led = 0;
 	volatile uint32_t *pUART0_stat = (uint32_t*)SYS_UART_STAT;
 	volatile uint32_t *pGPIO = (uint32_t*)SYS_GPIO_0_DATA;
 	volatile uint32_t *pGPIODIR = (uint32_t*)SYS_GPIO_0_DIR;
-	volatile uint32_t *pSDRAM = (uint32_t*)FLASH_BASE_MEM;
+	volatile uint32_t *pSDRAM32 = (uint32_t*)FLASH_BASE_MEM;
+	volatile uint16_t *pSDRAM16 = (uint16_t*)FLASH_BASE_MEM;
+	volatile uint8_t *pSDRAM8 = (uint8_t*)FLASH_BASE_MEM;
+	
+	uint32_t test_pattern [] = 
+	{
+		0x00000000,
+		0xFFFFFFFF,
+		0x000000FF,
+		0x0000FF00,
+		0x00FF0000,
+		0xFF000000,
+		0x10101010,
+		0x01010101,
+		0x55AA55AA,
+		0xAA55AA55
+	};
 	
 	CP0_SR_write(0x0060000D);
 	*pGPIODIR = GPIO_0_DFLT_DIR;
@@ -38,22 +57,63 @@ void main()
 		sputs("Iteration # ");print_word(led);sputs("\n");
 
 		*pGPIO = led;
-		data = 0x10011111;
-		for (i=0; i < 16; i++)
+
+		sputs("Testing SDRAM (pattern)\n");
+		for (j=0; j < ARRAY_SIZE(test_pattern); j++)
 		{
-			pSDRAM[i] = data;
-			data += 0x10011111;
+			for (i=0; i < SDRAM_SIZE/4; i++)
+			{
+				pSDRAM32[i] = test_pattern[j];
+			}
+			DCACHE_invalidate_all();
+			for (i=0; i < SDRAM_SIZE/4; i++)
+			{
+				data = pSDRAM32[i];
+				if (data != test_pattern[j])
+				{
+					sputs("\n");
+					sputs("Pattern "); print_word(test_pattern[j]); sputs("\n");
+					sputs("Error at address "); print_word(i); sputs("\n");
+					sputs("Read "); print_word(data); sputs("\n");
+					break;
+				}
+			}
+			sputs(".");
+		}
+		sputs("\n");
+
+		sputs("Testing SDRAM (32-bit write)\n");
+		data = 0x00010203;
+		for (i=0; i < 256/4; i++)
+		{
+			pSDRAM32[i] = data;
+			data += 0x04040404;
 		}
 		DCACHE_invalidate_all();
-		for (i=0; i < 16; i++)
+		memdump((uint8_t*)pSDRAM32, 0, 16, 256);
+		sputs("\n");
+
+		sputs("Testing SDRAM (16-bit write)\n");
+		data = 0x0001;
+		for (i=0; i < 256/2; i++)
 		{
-			sputs("SDRAM");print_word(pSDRAM[i]);sputs("\n");
+			pSDRAM16[i] = data;
+			data += 0x0202;
 		}
+		DCACHE_invalidate_all();
+		memdump((uint8_t*)pSDRAM16, 0, 16, 256);
+		sputs("\n");
 		
-		if(led == 0)
+		sputs("Testing SDRAM (8-bit write)\n");
+		data = 0x00;
+		for (i=0; i < 256; i++)
 		{
-			memdump((uint8_t*)pSDRAM, 0, 16, 256);
+			pSDRAM8[i] = data;
+			data += 0x01;
 		}
+		DCACHE_invalidate_all();
+		memdump((uint8_t*)pSDRAM8, 0, 16, 256);
+		sputs("\n");
 
 		led = (led+1) % 64;
 	}