add board sram support.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@18 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/stmsky001/board.c

@@ -133,6 +133,32 @@ void rt_hw_timer_handler(void)
 	rt_interrupt_leave();
 	rt_hw_interrupt_thread_switch();
 }
+
+static void FSMC_SRAM_Init(void)
+{
+#define REG32(x)	(*(volatile unsigned long*)(x))
+
+	/* enable FSMC clock */
+	REG32(0x40021014) = 0x114;
+	
+	/* enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
+	REG32(0x40021018) = 0x1e0;
+	
+	/* SRAM Data lines, NOE and NWE configuration */
+	REG32(0x40011400) = 0x44BB44BB;
+	REG32(0x40011404) = 0xBBBBBBBB;
+	REG32(0x40011800) = 0xB44444BB;
+	REG32(0x40011804) = 0xBBBBBBBB;
+	REG32(0x40011C00) = 0x44BBBBBB;
+	REG32(0x40011C04) = 0xBBBB4444;
+	REG32(0x40012000) = 0x44BBBBBB;
+	REG32(0x40012004) = 0x44444B44;
+	
+	/* FSMC Configuration (enable FSMC Bank1_SRAM Bank) */
+	REG32(0xA0000010) = 0x00001011;
+	REG32(0xA0000014) = 0x00000200;
+}
+
 
 /**
  * This function will initial STM32 board.
@@ -147,6 +173,9 @@ void rt_hw_board_init()
 	
 	/* Configure the SysTick */
 	SysTick_Configuration();
+	
+	/* Configure SRAM on the board */
+	FSMC_SRAM_Init();
 	
 	rt_hw_console_init();
 }

bsp/stmsky001/board.h

@@ -14,6 +14,11 @@
 
 #ifndef __BOARD_H__
 #define __BOARD_H__
+
+#define RT_USING_BOARD_SRAM
+
+#define BOARD_SRAM_BEGIN	0x68000000
+#define BOARD_SRAM_END		0x68080000
 
 void rt_hw_board_led_on(int n);
 void rt_hw_board_led_off(int n);

bsp/stmsky001/project.Uv2

 ### uVision2 Project, (C) Keil Software
 ### Do not modify !
 
-Target (RT-Thread/STM32Sky), 0x0004 // Tools: 'ARM-ADS'
+Target (RT-Thread/STMSky), 0x0004 // Tools: 'ARM-ADS'
 
 Group (Startup)
 Group (Library)
@@ -78,7 +78,7 @@ File 5,1,<..\..\finsh\symbol.c><symbol.c>
 File 5,1,<..\..\finsh\cmd.c><cmd.c>
 
 
-Options 1,0,0  // Target 'RT-Thread/STM32Sky'
+Options 1,0,0  // Target 'RT-Thread/STMSky'
  Device (STM32F103ZE)
  Vendor (STMicroelectronics)
  Cpu (IRAM(0x20000000-0x2000FFFF) IROM(0x8000000-0x807FFFF) CLOCK(8000000) CPUTYPE("Cortex-M3"))

bsp/stmsky001/startup.c

@@ -34,7 +34,8 @@ extern void finsh_set_device(char* device);
 #endif
 
 extern int  rt_application_init(void);
-
+
+#ifndef RT_USING_BOARD_SRAM
 #ifdef __CC_ARM
 extern int Image$$RW_IRAM1$$ZI$$Limit;
 #elif __ICCARM__
@@ -42,6 +43,7 @@ extern int Image$$RW_IRAM1$$ZI$$Limit;
 #else
 extern int __bss_end;
 #endif
+#endif
 
 #ifdef  DEBUG
 /*******************************************************************************
@@ -83,7 +85,10 @@ void rtthread_startup(void)
 	/* init timer system */
 	rt_system_timer_init();
 
-#ifdef RT_USING_HEAP
+#ifdef RT_USING_HEAP
+#ifdef RT_USING_BOARD_SRAM
+	rt_system_heap_init((void*)BOARD_SRAM_BEGIN, (void*)BOARD_SRAM_END);
+#else
 #ifdef __CC_ARM
 	rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)0x20010000);
 #elif __ICCARM__
@@ -91,6 +96,7 @@ void rtthread_startup(void)
 #else
 	/* init memory system */
 	rt_system_heap_init((void*)&__bss_end, (void*)0x20010000);
+#endif
 #endif
 #endif