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add sep4020 porting

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@776 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
zchongnari@gmail.com
2010-06-26 03:47:03 +00:00
parent 77b375741e
commit 360095ecb1
21 changed files with 6425 additions and 0 deletions
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40
bsp/sep4020/Ext_SDRAM.ini Normal file
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/******************************************************************************/
/* Ext_RAM.INI: External RAM (SDRAM) Initialization File */
/******************************************************************************/
// <<< Use Configuration Wizard in Context Menu >>> //
/******************************************************************************/
/* This file is part of the uVision/ARM development tools. */
/* Copyright (c) 2005-2008 Keil Software. All rights reserved. */
/* This software may only be used under the terms of a valid, current, */
/* end user licence from KEIL for a compatible version of KEIL software */
/* development tools. Nothing else gives you the right to use this software. */
/******************************************************************************/
FUNC void SetupForStart (void) {
// <o> Program Entry Point
PC = 0x30000000;
}
FUNC void Init (void) {
_WDWORD(0x1000200C, 0x00000000); // Disable Watchdog
// Clock Setup
_WDWORD(0x10001000, 0x00fa00fa); //
_WDWORD(0x10001014, 0x00000001); //
_WDWORD(0x10001004, 0x00004009); //
_WDWORD(0x10001004, 0x0000C009); //
_WDWORD(0x11000018, 0x1E104177); //
_WDWORD(0x1100001c, 0x80001860); //
}
Init(); // Initialize memory
LOAD build\rtthread-sep4020.axf INCREMENTAL // Download program
SetupForStart(); // Setup for Running
g, main // Goto Main

14
bsp/sep4020/Memory.ini Normal file
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/******************************************************************************/
/* MEMORY.INI: Memory Debug Initialization File */
/******************************************************************************/
/* This file is part of the uVision/ARM development tools. */
/* Copyright (c) 2005-2006 Keil Software. All rights reserved. */
/* This software may only be used under the terms of a valid, current, */
/* end user licence from KEIL for a compatible version of KEIL software */
/* development tools. Nothing else gives you the right to use this software. */
/******************************************************************************/
MAP 0x00000000,0x0000FFFF READ EXEC // External ROM
MAP 0x30000000,0x31FFFFFF READ WRITE // External RAM
MAP 0x10000000,0x11000000 READ WRITE
MAP 0x11000000,0x12000000 READ WRITE

86
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/*
* File : application.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-01-05 Bernard the first version
*/
/**
* @addtogroup SEP4020
*/
/*@{*/
#include <rtthread.h>
#include "board.h"
static void rt_thread_entry_led1(void* parameter)
{
/* init led configuration */
/* rt_hw_led_init(); */
while (1)
{
/* led on */
//rt_kprintf("led1 on\r\n");
GPIO_PORTE_DATA |= 0x1<<3;
rt_thread_delay(50); /* sleep 0.5 second and switch to other thread */
/* led off */
//rt_kprintf("led1 off\r\n");
GPIO_PORTE_DATA &= ~(0x1<<3);
rt_thread_delay(50);
}
}
char thread_led2_stack[1024];
struct rt_thread thread_led2;
void rt_thread_entry_led2(void* parameter)
{
unsigned int count=0;
while (1)
{
/* led on */
//rt_kprintf("led2 on,count : %d\r\n",count);
count++;
GPIO_PORTE_DATA |= 0x1<<4;
rt_thread_delay(RT_TICK_PER_SECOND);
/* led off */
//rt_kprintf("led2 off\r\n");
GPIO_PORTE_DATA &= ~(0x1<<4);
rt_thread_delay(RT_TICK_PER_SECOND);
}
}
int rt_application_init()
{
rt_thread_t thread;
/* create led1 thread */
thread = rt_thread_create("led1",
rt_thread_entry_led1, RT_NULL,
512,
20, 5);
if (thread != RT_NULL)
rt_thread_startup(thread);
//------- init led2 thread
rt_thread_init(&thread_led2,
"led2",
rt_thread_entry_led2,
RT_NULL,
&thread_led2_stack[0],
sizeof(thread_led2_stack),10,10);
rt_thread_startup(&thread_led2);
return 0;
}
/*@}*/

140
bsp/sep4020/board.c Normal file
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/*
* File : board.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-23 Bernard first implementation
*/
#include <rtthread.h>
#include <rthw.h>
#include <sep4020.h>
#include "board.h"
#include "serial.h"
/**
* @addtogroup sep4020
*/
/*@{*/
extern rt_uint32_t rt_hw_get_clock(void);
/* uart0 */
#define UART0 ((struct uartport *)UART0BASE)
struct serial_int_rx uart0_int_rx;
struct serial_device uart0 =
{
UART0,
&uart0_int_rx,
RT_NULL
};
struct rt_device uart0_device;
/**
* This is the timer interrupt service routine.
* @param vector the irq number for timer
*/
void rt_hw_timer_handler(int vector)
{
/* clear interrupt */
TIMER_T1ISCR;
/* increase a tick */
rt_tick_increase();
}
/**
* This is the uart0 interrupt service routine.
* @param vector the irq number for uart0
*/
void rt_serial_handler(int vector)
{
rt_hw_serial_isr(&uart0_device);
}
/**
* This function will handle init uart.
*/
void rt_hw_uart_init(void)
{
rt_uint32_t baud;
rt_uint32_t sysclock;
sysclock = rt_hw_get_clock();
/* caculate baud rate register */
baud = sysclock/16/BR;
/* LCR */
uart0.uart_device->lcr = 0x83;
/* DLBH, IER */
uart0.uart_device->dlbh_ier = (baud>>8)&0xff;;
/* DLBL */
uart0.uart_device->dlbl_rxfifo_txfifo = baud&0xff;
/* LCR */
uart0.uart_device->lcr = 0x03;
/* IER */
uart0.uart_device->dlbh_ier = 0x01;
/* FCR */
uart0.uart_device->iir_fcr = 0x00;
rt_hw_serial_register(&uart0_device, "uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
&uart0);
/* install uart isr */
INTC_IER |= (1<<INT_UART0);
rt_hw_interrupt_install(INT_UART0, rt_serial_handler, RT_NULL);
rt_hw_interrupt_umask(INT_UART0);
}
/**
* This function will init led on the board
*/
static void rt_hw_board_led_init(void)
{
/* PE3 PE4 PE5 for led */
GPIO_PORTE_SEL |=0x38; /* GPIO */
GPIO_PORTE_DIR &= ~0x38; /* output*/
GPIO_PORTE_DATA &= ~0x38; /* low */
}
/**
* This function will init timer1 for system ticks
*/
static void rt_hw_timer_init(void)
{
TIMER_T1CR = 0x06; /* reload mode and interrupt enable */
TIMER_T1LCR = 0xAFC80; /* 10ms under 72MHz 0xAFC80=720000 */
INTC_IER |= (1<<INT_TIMER1); /* interrupt enable */
rt_hw_interrupt_install(INT_TIMER1, rt_hw_timer_handler, RT_NULL);
rt_hw_interrupt_umask(INT_TIMER1);
TIMER_T1CR |= 0x01; /* enable the timer 1 */
}
/**
* This function will initial sam7x board.
*/
void rt_hw_board_init()
{
/* init hardware uart */
rt_hw_uart_init();
rt_console_set_device("uart0");
/* init led */
rt_hw_board_led_init();
/* init timer for tick */
rt_hw_timer_init();
}
/*@}*/

26
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/*
* File : board.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-10-08 Bernard add board.h to this bsp
*/
#ifndef __BOARD_H__
#define __BOARD_H__
#include <rthw.h>
#include <rtthread.h>
#include <sep4020.h>
#define BR 115200 /* Baud Rate */
void rt_hw_board_init(void);
#endif

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150
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/* RT-Thread config file */
#ifndef __RTTHREAD_CFG_H__
#define __RTTHREAD_CFG_H__
/* RT_NAME_MAX*/
#define RT_NAME_MAX 8
/* RT_ALIGN_SIZE*/
#define RT_ALIGN_SIZE 4
/* PRIORITY_MAX*/
#define RT_THREAD_PRIORITY_MAX 32
/* Tick per Second*/
#define RT_TICK_PER_SECOND 100
/* SECTION: RT_DEBUG */
/* Thread Debug*/
/* #define RT_THREAD_DEBUG */
/* Using Hook*/
#define RT_USING_HOOK
/* SECTION: IPC */
/* Using Semaphore*/
#define RT_USING_SEMAPHORE
/* Using Mutex*/
#define RT_USING_MUTEX
/* Using Event*/
#define RT_USING_EVENT
/* Using Faset Event*/
/* #define RT_USING_FASTEVENT */
/* Using MailBox*/
#define RT_USING_MAILBOX
/* Using Message Queue*/
#define RT_USING_MESSAGEQUEUE
/* SECTION: Memory Management */
/* Using Memory Pool Management*/
#define RT_USING_MEMPOOL
/* Using Dynamic Heap Management*/
#define RT_USING_HEAP
/* Using Small MM*/
#define RT_USING_SMALL_MEM
#define RT_MEM_STATS
/* Using SLAB Allocator*/
/* #define RT_USING_SLAB */
/* SECTION: Device System */
/* Using Device System*/
#define RT_USING_DEVICE
#define RT_USING_UART1
#define RT_UART_RX_BUFFER_SIZE 128
/* SECTION: Console options */
/* the buffer size of console*/
#define RT_CONSOLEBUF_SIZE 128
/* SECTION: FinSH shell options */
/* Using FinSH as Shell*/
#define RT_USING_FINSH
/* use symbol table */
#define FINSH_USING_SYMTAB
#define FINSH_USING_DESCRIPTION
/* SECTION: a mini libc */
/* Using mini libc library*/
/* #define RT_USING_MINILIBC */
/* SECTION: C++ support */
/* Using C++ support*/
/* #define RT_USING_CPLUSPLUS */
/* SECTION: lwip, a lighwight TCP/IP protocol stack */
/* Using lighweight TCP/IP protocol stack*/
//#define RT_USING_LWIP
/* Trace LwIP protocol*/
/* #define RT_LWIP_DEBUG */
/* LwIP tcp thread option */
#define RT_LWIP_TCPTHREAD_PRIORITY 8
#define RT_LWIP_TCPTHREAD_STACKSIZE 4096
#define RT_LWIP_TCPTHREAD_MBOX_SIZE 32
/* LwIP eth thread option */
#define RT_LWIP_ETHTHREAD_PRIORITY 15
#define RT_LWIP_ETHTHREAD_STACKSIZE 1024
#define RT_LWIP_ETHTHREAD_MBOX_SIZE 8
/* Enable ICMP protocol*/
#define RT_LWIP_ICMP
/* Enable IGMP protocol*/
#define RT_LWIP_IGMP
/* Enable UDP protocol*/
#define RT_LWIP_UDP
/* Enable TCP protocol*/
#define RT_LWIP_TCP
/* the number of simulatenously active TCP connections*/
#define RT_LWIP_TCP_PCB_NUM 5
/* TCP sender buffer space*/
#define RT_LWIP_TCP_SND_BUF 1500
/* Enable SNMP protocol*/
/* #define RT_LWIP_SNMP */
/* Using DHCP*/
/* #define RT_LWIP_DHCP */
/* ip address of target*/
#define RT_LWIP_IPADDR0 192
#define RT_LWIP_IPADDR1 168
#define RT_LWIP_IPADDR2 1
#define RT_LWIP_IPADDR3 30
/* gateway address of target*/
#define RT_LWIP_GWADDR0 192
#define RT_LWIP_GWADDR1 168
#define RT_LWIP_GWADDR2 1
#define RT_LWIP_GWADDR3 1
/* mask address of target*/
#define RT_LWIP_MSKADDR0 255
#define RT_LWIP_MSKADDR1 255
#define RT_LWIP_MSKADDR2 255
#define RT_LWIP_MSKADDR3 0
/* SECTION: DFS options */
//#define RT_USING_DFS
/* the max number of mounted filesystem */
#define DFS_FILESYSTEMS_MAX 1
/* the max number of opened files */
#define DFS_FD_MAX 2
/* the max number of cached sector */
#define DFS_CACHE_MAX_NUM 4
#endif

15
bsp/sep4020/rtthread-sep4020-rom.sct Normal file
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; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************
LR_ROM1 0x00000000 0x00200000 { ; load region size_region
ER_ROM1 0x00000000 0x00200000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_RAM1 0x30000000 0x32000000 { ; RW data
.ANY (+RW +ZI)
}
}

15
bsp/sep4020/rtthread-sep4020-sdram.sct Normal file
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; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************
LR_ROM1 0x30000000 0x02000000 { ; load region size_region
ER_ROM1 0x30000000 0x02000000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_RAM1 0x31000000{
.ANY (+RW +ZI)
}
}

637
bsp/sep4020/sep4020.h Normal file
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132
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/*
* File : startup.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-31 Bernard first implementation
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
/**
* @addtogroup STM32
*/
/*@{*/
extern int rt_application_init(void);
#ifdef RT_USING_FINSH
extern void finsh_system_init(void);
extern void finsh_set_device(const char* device);
#endif
#ifdef __CC_ARM
extern int Image$$RW_RAM1$$ZI$$Limit;
#elif __ICCARM__
#pragma section="HEAP"
#else
extern int __bss_end;
#endif
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert error has occurred.
* Input : - file: pointer to the source file name
* - line: assert error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 line)
{
rt_kprintf("\n\r Wrong parameter value detected on\r\n");
rt_kprintf(" file %s\r\n", file);
rt_kprintf(" line %d\r\n", line);
while (1) ;
}
#endif
/**
* This function will startup RT-Thread RTOS.
*/
void rtthread_startup(void)
{
/* init hardware interrupt */
rt_hw_interrupt_init();
/* init board */
rt_hw_board_init();
/* show version */
rt_show_version();
/* init tick */
rt_system_tick_init();
/* init kernel object */
rt_system_object_init();
/* init timer system */
rt_system_timer_init();
#ifdef RT_USING_HEAP
#ifdef __CC_ARM
rt_system_heap_init((void*)&Image$$RW_RAM1$$ZI$$Limit, (void*)0x32000000);
#elif __ICCARM__
rt_system_heap_init(__segment_end("HEAP"), (void*)STM32_SRAM_END);
#else
/* init memory system */
rt_system_heap_init((void*)&__bss_end, (void*)STM32_SRAM_END);
#endif
#endif
/* init scheduler system */
rt_system_scheduler_init();
/* init all device */
rt_device_init_all();
/* init application */
rt_application_init();
#ifdef RT_USING_FINSH
/* init finsh */
finsh_system_init();
finsh_set_device("uart0");
#endif
/* init idle thread */
rt_thread_idle_init();
/* start scheduler */
rt_system_scheduler_start();
/* never reach here */
return ;
}
int main(void)
{
rt_uint32_t UNUSED level;
/* disable interrupt first */
level = rt_hw_interrupt_disable();
/* startup RT-Thread RTOS */
rtthread_startup();
return 0;
}
/*@}*/

112
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/*
* File : clock.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-03-20 zchong first version
*/
#include <rtthread.h>
#include "sep4020.h"
#define CLK_IN 4000000 /* Fin = 4.00MHz */
#define SYSCLK 72000000 /* system clock we want */
#define CLK_ESRAM 0
#define CLK_LCDC 1
#define CLK_PWM 2
#define CLK_DMAC 3
#define CLK_EMI 4
#define CLK_MMCSD 5
#define CLK_SSI 7
#define CLK_UART0 8
#define CLK_UART1 9
#define CLK_UART2 10
#define CLK_UART3 11
#define CLK_USB 12
#define CLK_MAC 13
#define CLK_SMC 14
#define CLK_I2C 15
#define CLK_GPT 16
static void rt_hw_set_system_clock(void)
{
rt_uint8_t pv;
/* pv value*/
pv = SYSCLK/2/CLK_IN;
/* go to normal mode*/
PMC_PMDR = 0x01;
/* set the clock */
PMC_PMCR = 0x4000 | pv;
/* trige configurate*/
PMC_PMCR = 0xc000 | pv;
}
static void rt_hw_set_usb_clock(void)
{
/* set the clock */
PMC_PUCR = 0x000c;
/* trige configurate*/
PMC_PMCR = 0x800c;
}
/**
* @brief System Clock Configuration
*/
void rt_hw_clock_init(void)
{
/* set system clock */
rt_hw_set_system_clock();
/* set usb clock */
rt_hw_set_usb_clock();
}
/**
* @brief Get system clock
*/
rt_uint32_t rt_hw_get_clock(void)
{
rt_uint32_t val;
rt_uint8_t pv, pd, npd;
/* get PMCR value */
val = PMC_PMCR;
/* get NPD */
npd = (val >> 14) & 0x01;
/* get PD */
pd = (val >> 10) & 0x0f;
/* get PV */
pv = val & 0x7f;
/* caculate the system clock */
if(npd)
val = 2 * CLK_IN * pv;
else
val = CLK_IN * pv / (pd + 1);
return(val);
}
/**
* @brief Enable module clock
*/
void rt_hw_enable_module_clock(rt_uint8_t module)
{
}
/**
* @brief Disable module clock
*/
void rt_hw_disable_module_clock(rt_uint8_t module)
{
}

107
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;/*
; * File : context_rvds.S
; * This file is part of RT-Thread RTOS
; * COPYRIGHT (C) 2006, RT-Thread Development Team
; *
; * The license and distribution terms for this file may be
; * found in the file LICENSE in this distribution or at
; * http://www.rt-thread.org/license/LICENSE
; *
; * Change Logs:
; * Date Author Notes
; * 2009-01-20 Bernard first version
; */
NOINT EQU 0xc0 ; disable interrupt in psr
AREA |.text|, CODE, READONLY, ALIGN=2
ARM
REQUIRE8
PRESERVE8
;/*
; * rt_base_t rt_hw_interrupt_disable();
; */
rt_hw_interrupt_disable PROC
EXPORT rt_hw_interrupt_disable
MRS r0, cpsr
ORR r1, r0, #NOINT
MSR cpsr_c, r1
BX lr
ENDP
;/*
; * void rt_hw_interrupt_enable(rt_base_t level);
; */
rt_hw_interrupt_enable PROC
EXPORT rt_hw_interrupt_enable
MSR cpsr_c, r0
BX lr
ENDP
;/*
; * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
; * r0 --> from
; * r1 --> to
; */
rt_hw_context_switch PROC
EXPORT rt_hw_context_switch
STMFD sp!, {lr} ; push pc (lr should be pushed in place of PC)
STMFD sp!, {r0-r12, lr} ; push lr & register file
MRS r4, cpsr
STMFD sp!, {r4} ; push cpsr
MRS r4, spsr
STMFD sp!, {r4} ; push spsr
STR sp, [r0] ; store sp in preempted tasks TCB
LDR sp, [r1] ; get new task stack pointer
LDMFD sp!, {r4} ; pop new task spsr
MSR spsr_cxsf, r4
LDMFD sp!, {r4} ; pop new task cpsr
MSR cpsr_cxsf, r4
LDMFD sp!, {r0-r12, lr, pc} ; pop new task r0-r12, lr & pc
ENDP
;/*
; * void rt_hw_context_switch_to(rt_uint32 to);
; * r0 --> to
; */
rt_hw_context_switch_to PROC
EXPORT rt_hw_context_switch_to
LDR sp, [r0] ; get new task stack pointer
LDMFD sp!, {r4} ; pop new task spsr
MSR spsr_cxsf, r4
LDMFD sp!, {r4} ; pop new task cpsr
MSR cpsr_cxsf, r4
LDMFD sp!, {r0-r12, lr, pc} ; pop new task r0-r12, lr & pc
ENDP
;/*
; * void rt_hw_context_switch_interrupt(rt_uint32 from, rt_uint32 to);
; */
IMPORT rt_thread_switch_interrput_flag
IMPORT rt_interrupt_from_thread
IMPORT rt_interrupt_to_thread
rt_hw_context_switch_interrupt PROC
EXPORT rt_hw_context_switch_interrupt
LDR r2, =rt_thread_switch_interrput_flag
LDR r3, [r2]
CMP r3, #1
BEQ _reswitch
MOV r3, #1 ; set rt_thread_switch_interrput_flag to 1
STR r3, [r2]
LDR r2, =rt_interrupt_from_thread ; set rt_interrupt_from_thread
STR r0, [r2]
_reswitch
LDR r2, =rt_interrupt_to_thread ; set rt_interrupt_to_thread
STR r1, [r2]
BX lr
ENDP
END

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/*
* File : cpu.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-23 Bernard first version
*/
#include <rtthread.h>
/**
* @addtogroup AT91SAM7X
*/
/*@{*/
/**
* this function will reset CPU
*
*/
void rt_hw_cpu_reset()
{
}
/**
* this function will shutdown CPU
*
*/
void rt_hw_cpu_shutdown()
{
rt_kprintf("shutdown...\n");
while (1);
}
/*@}*/

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/*
* File : trap.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-23 Bernard first version
* 2010-03-17 zchong SEP4020
*/
#include <rtthread.h>
#include "sep4020.h"
#define MAX_HANDLERS 32
extern rt_uint32_t rt_interrupt_nest;
/* exception and interrupt handler table */
rt_isr_handler_t isr_table[MAX_HANDLERS];
rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
rt_uint32_t rt_thread_switch_interrput_flag;
/**
* @addtogroup SEP4020
*/
/*@{*/
void rt_hw_interrupt_handler(int vector)
{
rt_kprintf("Unhandled interrupt %d occured!!!\n", vector);
}
/**
* This function will initialize hardware interrupt
*/
void rt_hw_interrupt_init()
{
register rt_uint32_t idx;
/* disable all interrupts */
INTC_IER = 0x0;
/* mask all interrupts */
INTC_IMR = 0xFFFFFFFF;
/* init exceptions table */
for(idx=0; idx < MAX_HANDLERS; idx++)
{
isr_table[idx] = (rt_isr_handler_t)rt_hw_interrupt_handler;
}
/* init interrupt nest, and context in thread sp */
rt_interrupt_nest = 0;
rt_interrupt_from_thread = 0;
rt_interrupt_to_thread = 0;
rt_thread_switch_interrput_flag = 0;
}
/**
* This function will mask a interrupt.
* @param vector the interrupt number
*/
void rt_hw_interrupt_mask(int vector)
{
INTC_IMR |= 1 << vector;
}
/**
* This function will un-mask a interrupt.
* @param vector the interrupt number
*/
void rt_hw_interrupt_umask(int vector)
{
/* un-mask interrupt */
if ((vector == INT_NOTUSED0) || (vector == INT_NOTUSED16))
{
rt_kprintf("Interrupt vec %d is not used!\n", vector);
// while(1);
}
else if (vector == INTGLOBAL)
INTC_IMR = 0x0;
else
INTC_IMR &= ~(1 << vector);
}
/**
* This function will install a interrupt service routine to a interrupt.
* @param vector the interrupt number
* @param new_handler the interrupt service routine to be installed
* @param old_handler the old interrupt service routine
*/
void rt_hw_interrupt_install(int vector, rt_isr_handler_t new_handler, rt_isr_handler_t *old_handler)
{
if(vector >= 0 && vector < MAX_HANDLERS)
{
if (*old_handler != RT_NULL) *old_handler = isr_table[vector];
if (new_handler != RT_NULL) isr_table[vector] = new_handler;
}
}
/*@}*/

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/*
* File : serial.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-02-05 Bernard first version
* 2009-10-25 Bernard fix rt_serial_read bug when there is no data
* in the buffer.
* 2010-03-29 Bernard cleanup code.
* 2010-06-14 zchong for sep4020
*/
#include "serial.h"
/**
* @addtogroup SEP4020
*/
/*@{*/
/* RT-Thread Device Interface */
static rt_err_t rt_serial_init (rt_device_t dev)
{
struct serial_device* uart = (struct serial_device*) dev->private;
if (!(dev->flag & RT_DEVICE_FLAG_ACTIVATED))
{
if (dev->flag & RT_DEVICE_FLAG_INT_RX)
{
rt_memset(uart->int_rx->rx_buffer, 0,
sizeof(uart->int_rx->rx_buffer));
uart->int_rx->read_index = uart->int_rx->save_index = 0;
}
if (dev->flag & RT_DEVICE_FLAG_INT_TX)
{
rt_memset(uart->int_tx->tx_buffer, 0,
sizeof(uart->int_tx->tx_buffer));
uart->int_tx->write_index = uart->int_tx->save_index = 0;
}
dev->flag |= RT_DEVICE_FLAG_ACTIVATED;
}
return RT_EOK;
}
static rt_err_t rt_serial_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t rt_serial_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_size_t rt_serial_read (rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
rt_uint8_t* ptr;
rt_err_t err_code;
struct serial_device* uart;
ptr = buffer;
err_code = RT_EOK;
uart = (struct serial_device*)dev->private;
if (dev->flag & RT_DEVICE_FLAG_INT_RX)
{
/* interrupt mode Rx */
while (size)
{
rt_base_t level;
/* disable interrupt */
level = rt_hw_interrupt_disable();
if (uart->int_rx->read_index != uart->int_rx->save_index)
{
/* read a character */
*ptr++ = uart->int_rx->rx_buffer[uart->int_rx->read_index];
size--;
/* move to next position */
uart->int_rx->read_index ++;
if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)
uart->int_rx->read_index = 0;
}
else
{
/* set error code */
err_code = -RT_EEMPTY;
/* enable interrupt */
rt_hw_interrupt_enable(level);
break;
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
}
}
else
{
/* polling mode */
while ((rt_uint32_t)ptr - (rt_uint32_t)buffer < size)
{
while (uart->uart_device->lsr & USTAT_RCV_READY)
{
*ptr = uart->uart_device->dlbl_rxfifo_txfifo & 0xff;
ptr ++;
}
}
}
/* set error code */
rt_set_errno(err_code);
return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
}
static rt_size_t rt_serial_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
{
rt_uint8_t* ptr;
rt_err_t err_code;
struct serial_device* uart;
err_code = RT_EOK;
ptr = (rt_uint8_t*)buffer;
uart = (struct serial_device*)dev->private;
if (dev->flag & RT_DEVICE_FLAG_INT_TX)
{
/* interrupt mode Tx */
while (uart->int_tx->save_index != uart->int_tx->write_index)
{
/* save on tx buffer */
uart->int_tx->tx_buffer[uart->int_tx->save_index] = *ptr++;
-- size;
/* move to next position */
uart->int_tx->save_index ++;
/* wrap save index */
if (uart->int_tx->save_index >= UART_TX_BUFFER_SIZE)
uart->int_tx->save_index = 0;
}
/* set error code */
if (size > 0)
err_code = -RT_EFULL;
}
else
{
/* polling mode */
while (size)
{
/*
* to be polite with serial console add a line feed
* to the carriage return character
*/
if (*ptr == '\n' && (dev->flag & RT_DEVICE_FLAG_STREAM))
{
while (!(uart->uart_device->lsr & USTAT_TXB_EMPTY));
uart->uart_device->dlbl_rxfifo_txfifo = '\r';
}
while (!(uart->uart_device->lsr & USTAT_TXB_EMPTY));
uart->uart_device->dlbl_rxfifo_txfifo = (*ptr & 0x1FF);
++ptr; --size;
}
}
/* set error code */
rt_set_errno(err_code);
return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
}
static rt_err_t rt_serial_control (rt_device_t dev, rt_uint8_t cmd, void *args)
{
// struct serial_device* uart;
RT_ASSERT(dev != RT_NULL);
// uart = (struct serial_device*)dev->private;
switch (cmd)
{
case RT_DEVICE_CTRL_SUSPEND:
/* suspend device */
dev->flag |= RT_DEVICE_FLAG_SUSPENDED;
break;
case RT_DEVICE_CTRL_RESUME:
/* resume device */
dev->flag &= ~RT_DEVICE_FLAG_SUSPENDED;
break;
}
return RT_EOK;
}
/*
* serial register for SEP4020
*/
rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial)
{
RT_ASSERT(device != RT_NULL);
device->type = RT_Device_Class_Char;
device->rx_indicate = RT_NULL;
device->tx_complete = RT_NULL;
device->init = rt_serial_init;
device->open = rt_serial_open;
device->close = rt_serial_close;
device->read = rt_serial_read;
device->write = rt_serial_write;
device->control = rt_serial_control;
device->private = serial;
/* register a character device */
return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR | flag);
}
/* ISR for serial interrupt */
void rt_hw_serial_isr(rt_device_t device)
{
rt_base_t level;
struct serial_device* uart = (struct serial_device*) device->private;
/* interrupt mode receive */
RT_ASSERT(device->flag & RT_DEVICE_FLAG_INT_RX);
/* save on rx buffer */
while (uart->uart_device->lsr & USTAT_RCV_READY)
{
/* disable interrupt */
level = rt_hw_interrupt_disable();
uart->int_rx->rx_buffer[uart->int_rx->save_index] = uart->uart_device->dlbl_rxfifo_txfifo & 0xff;
uart->int_rx->save_index ++;
if (uart->int_rx->save_index >= UART_RX_BUFFER_SIZE)
uart->int_rx->save_index = 0;
/* if the next position is read index, discard this 'read char' */
if (uart->int_rx->save_index == uart->int_rx->read_index)
{
uart->int_rx->read_index ++;
if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)
uart->int_rx->read_index = 0;
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
}
/* invoke callback */
if (device->rx_indicate != RT_NULL)
{
rt_size_t rx_length;
/* get rx length */
rx_length = uart->int_rx->read_index > uart->int_rx->save_index ?
UART_RX_BUFFER_SIZE - uart->int_rx->read_index + uart->int_rx->save_index :
uart->int_rx->save_index - uart->int_rx->read_index;
device->rx_indicate(device, rx_length);
}
}
/*@}*/

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#ifndef __RT_SERIAL_H__
#define __RT_SERIAL_H__
#include <rthw.h>
#include <rtthread.h>
#define USTAT_RCV_READY 0x01 /* receive data ready */
#define USTAT_TXB_EMPTY 0x20 /* tx buffer empty */
#define BPS 115200 /* serial baudrate */
#define UART_RX_BUFFER_SIZE 64
#define UART_TX_BUFFER_SIZE 64
struct serial_int_rx
{
rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
rt_uint32_t read_index, save_index;
};
struct serial_int_tx
{
rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
rt_uint32_t write_index, save_index;
};
/* serial port registers */
typedef struct uartport
{
rt_uint32_t dlbl_rxfifo_txfifo;
rt_uint32_t dlbh_ier;
rt_uint32_t iir_fcr;
rt_uint32_t lcr;
rt_uint32_t mcr;
rt_uint32_t lsr;
rt_uint32_t msr;
}uartport;
struct serial_device
{
/* uart hardware registers */
uartport* uart_device;
/* rx structure */
struct serial_int_rx* int_rx;
/* tx structure */
struct serial_int_tx* int_tx;
};
rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial);
void rt_hw_serial_isr(rt_device_t device);
#endif

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/*
* File : stack.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-23 Bernard the first version
*/
#include <rtthread.h>
#define SVCMODE 0x13
/**
* @addtogroup AT91SAM7
*/
/*@{*/
/**
* This function will initialize thread stack
*
* @param tentry the entry of thread
* @param parameter the parameter of entry
* @param stack_addr the beginning stack address
* @param texit the function will be called when thread exit
*
* @return stack address
*/
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
rt_uint8_t *stack_addr, void *texit)
{
unsigned long *stk;
stk = (unsigned long *)stack_addr;
*(stk) = (unsigned long)tentry; /* entry point */
*(--stk) = (unsigned long)texit; /* lr */
*(--stk) = 0; /* r12 */
*(--stk) = 0; /* r11 */
*(--stk) = 0; /* r10 */
*(--stk) = 0; /* r9 */
*(--stk) = 0; /* r8 */
*(--stk) = 0; /* r7 */
*(--stk) = 0; /* r6 */
*(--stk) = 0; /* r5 */
*(--stk) = 0; /* r4 */
*(--stk) = 0; /* r3 */
*(--stk) = 0; /* r2 */
*(--stk) = 0; /* r1 */
*(--stk) = (unsigned long)parameter; /* r0 : argument */
*(--stk) = SVCMODE; /* cpsr */
*(--stk) = SVCMODE; /* spsr */
/* return task's current stack address */
return (rt_uint8_t *)stk;
}
/*@}*/

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;==============================================================================================
; star_rvds.s for Keil MDK 4.10
;
; SEP4020 start up code
;
; Change Logs:
; Date Author Notes
; 2010-03-17 zchong
;=============================================================================================
;
PMU_PLTR EQU 0x10001000 ; PLL的稳定过渡时间
PMU_PMCR EQU 0x10001004 ; 系统主时钟PLL的控制寄存器
PMU_PUCR EQU 0x10001008 ; USB时钟PLL的控制寄存器
PMU_PCSR EQU 0x1000100C ; 内部模块时钟源供给的控制寄存器
PMU_PDSLOW EQU 0x10001010 ; SLOW状态下时钟的分频因子
PMU_PMDR EQU 0x10001014 ; 芯片工作模式寄存器
PMU_RCTR EQU 0x10001018 ; Reset控制寄存器
PMU_CLRWAKUP EQU 0x1000101C ; WakeUp清除寄存器
RTC_CTR EQU 0x1000200C ; RTC控制寄存器
INTC_IER EQU 0x10000000 ; IRQ中断允许寄存器
INTC_IMR EQU 0x10000008 ; IRQ中断屏蔽寄存器
INTC_IFSR EQU 0x10000030 ; IRQ中断最终状态寄存器
INTC_FIER EQU 0x100000C0 ; FIQ中断允许寄存器
INTC_FIMR EQU 0x100000C4 ; FIQ中断屏蔽寄存器
EMI_CSACONF EQU 0x11000000 ; CSA参数配置寄存器
EMI_CSECONF EQU 0x11000010 ; CSE参数配置寄存器
EMI_CSFCONF EQU 0x11000014 ; CSF参数配置寄存器
EMI_SDCONF1 EQU 0x11000018 ; SDRAM时序配置寄存器1
EMI_SDCONF2 EQU 0x1100001C ; SDRAM时序配置寄存器2, SDRAM初始化用到的配置信息
EMI_REMAPCONF EQU 0x11000020 ; 片选空间及地址映射REMAP配置寄存器
Mode_USR EQU 0x10
Mode_FIQ EQU 0x11
Mode_IRQ EQU 0x12
Mode_SVC EQU 0x13
Mode_ABT EQU 0x17
Mode_UND EQU 0x1B
Mode_SYS EQU 0x1F
I_Bit EQU 0x80 ; when I bit is set, IRQ is disabled
F_Bit EQU 0x40 ; when F bit is set, FIQ is disabled
NOINT EQU 0xc0
MASK_MODE EQU 0x0000003F
MODE_SVC32 EQU 0x00000013
; Internal Memory Base Addresses
FLASH_BASE EQU 0x20000000
RAM_BASE EQU 0x04000000
; Stack
UND_Stack_Size EQU 0x00000000
SVC_Stack_Size EQU 0x00000400
ABT_Stack_Size EQU 0x00000000
FIQ_Stack_Size EQU 0x00000000
IRQ_Stack_Size EQU 0x00000100
USR_Stack_Size EQU 0x00000000
ISR_Stack_Size EQU (UND_Stack_Size + SVC_Stack_Size + ABT_Stack_Size + \
FIQ_Stack_Size + IRQ_Stack_Size)
AREA STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem SPACE USR_Stack_Size
__initial_sp SPACE ISR_Stack_Size
Stack_Top
; Heap
Heap_Size EQU 0x00000000
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
Heap_Mem SPACE Heap_Size
__heap_limit
PRESERVE8
; Area Definition and Entry Point
; Startup Code must be linked first at Address at which it expects to run.
AREA RESET, CODE, READONLY
ARM
; Exception Vectors
; Mapped to Address 0.
; Absolute addressing mode must be used.
; Dummy Handlers are implemented as infinite loops which can be modified.
Vectors LDR PC,Reset_Addr
LDR PC,Undef_Addr
LDR PC,SWI_Addr
LDR PC,PAbt_Addr
LDR PC,DAbt_Addr
NOP ; Reserved Vector
LDR PC,IRQ_Addr
LDR PC,FIQ_Addr
Reset_Addr DCD Reset_Handler
Undef_Addr DCD Undef_Handler
SWI_Addr DCD SWI_Handler
PAbt_Addr DCD PAbt_Handler
DAbt_Addr DCD DAbt_Handler
DCD 0 ; Reserved Address
IRQ_Addr DCD IRQ_Handler
FIQ_Addr DCD FIQ_Handler
Undef_Handler B Undef_Handler
SWI_Handler B SWI_Handler
PAbt_Handler B PAbt_Handler
DAbt_Handler B DAbt_Handler
FIQ_Handler B FIQ_Handler
; Reset Handler
EXPORT Reset_Handler
Reset_Handler
;****************************************************************
;* 关闭看门狗
;****************************************************************
LDR R0,=RTC_CTR
LDR R1,=0x0
STR R1,[R0]
;****************************************************************
;* 关中断
;****************************************************************
MRS R0, CPSR
BIC R0, R0, #MASK_MODE
ORR R0, R0, #MODE_SVC32
ORR R0, R0, #I_Bit
ORR R0, R0, #F_Bit
MSR CPSR_c, r0
LDR R0,=INTC_IER
LDR R1,=0x0
STR R1,[R0]
LDR R0,=INTC_IMR
LDR R1,=0xFFFFFFFF
STR R1,[R0]
LDR R0,=INTC_FIER
LDR R1,=0x0
STR R1,[R0]
LDR R0,=INTC_FIMR
LDR R1,=0x0F
STR R1,[R0]
;****************************************************************
;* 初始化PMU模块, 配置系统时钟
;****************************************************************
LDR R4, =PMU_PCSR ; 打开所有模块时钟
LDR R5, =0x0001ffff
STR R5, [ R4 ]
LDR R4, =PMU_PLTR ; 配置PLL稳定过度时间为保守值50us*100M.
LDR R5, =0x00fa00fa
STR R5, [ R4 ]
LDR R4, =PMU_PMDR ; 由SLOW模式进入NORMAL模式
LDR R5, =0x00000001
STR R5, [ R4 ]
LDR R4, =PMU_PMCR ; 配置系统时钟为72MHz 2*Fin*9=2*4*9=72MHz
LDR R5, =0x00004009 ; MFCN 0->1 trigger PLL to reconfigure event when mode isn''t SLOW
STR R5, [ R4 ]
LDR R4, =PMU_PMCR ;
LDR R5, =0x0000c009
STR R5, [ R4 ]
;****************************************************************
;* 初始化EMI
;****************************************************************
; LDR R4, =EMI_CSACONF ; CSA片选时序参数配置
; LDR R5, =0x08a6a6a1
; STR R5, [ R4 ]
; LDR R4, =EMI_CSECONF ; CSE片选时序参数配置,最保守配置
; LDR R5, =0x8cfffff1
; STR R5, [ R4 ]
; LDR R4, =EMI_SDCONF1 ; SDRAM参数配置1
; LDR R5, =0x1E104177
; STR R5, [ R4 ]
; LDR R4, =EMI_SDCONF2 ; SDRAM参数配置2
; LDR R5, =0x80001860
; STR R5, [ R4 ]
; Copy Exception Vectors to Internal RAM
IF :DEF:RAM_INTVEC
ADR R8, Vectors ; Source
LDR R9, =RAM_BASE ; Destination
LDMIA R8!, {R0-R7} ; Load Vectors
STMIA R9!, {R0-R7} ; Store Vectors
LDMIA R8!, {R0-R7} ; Load Handler Addresses
STMIA R9!, {R0-R7} ; Store Handler Addresses
ENDIF
; Remap on-chip RAM to address 0
IF :DEF:REMAP
LDR R0, =EMI_REMAPCONF
MOV R1, #0x80000000
STR R1, [R0, #0] ; Remap
ENDIF
; Setup Stack for each mode
LDR R0, =Stack_Top
; Enter Undefined Instruction Mode and set its Stack Pointer
MSR CPSR_c, #Mode_UND:OR:I_Bit:OR:F_Bit
MOV SP, R0
SUB R0, R0, #UND_Stack_Size
; Enter Abort Mode and set its Stack Pointer
MSR CPSR_c, #Mode_ABT:OR:I_Bit:OR:F_Bit
MOV SP, R0
SUB R0, R0, #ABT_Stack_Size
; Enter FIQ Mode and set its Stack Pointer
MSR CPSR_c, #Mode_FIQ:OR:I_Bit:OR:F_Bit
MOV SP, R0
SUB R0, R0, #FIQ_Stack_Size
; Enter IRQ Mode and set its Stack Pointer
MSR CPSR_c, #Mode_IRQ:OR:I_Bit:OR:F_Bit
MOV SP, R0
SUB R0, R0, #IRQ_Stack_Size
; Enter Supervisor Mode and set its Stack Pointer
MSR CPSR_c, #Mode_SVC:OR:I_Bit:OR:F_Bit
MOV SP, R0
SUB R0, R0, #SVC_Stack_Size
; Enter User Mode and set its Stack Pointer
; MSR CPSR_c, #Mode_USR
IF :DEF:__MICROLIB
EXPORT __initial_sp
ELSE
; No usr mode stack here.
;MOV SP, R0
;SUB SL, SP, #USR_Stack_Size
ENDIF
; Enter the C code
IMPORT __main
LDR R0, =__main
BX R0
IMPORT rt_interrupt_enter
IMPORT rt_interrupt_leave
IMPORT rt_thread_switch_interrput_flag
IMPORT rt_interrupt_from_thread
IMPORT rt_interrupt_to_thread
IMPORT rt_hw_trap_irq
IMPORT rt_hw_trap_abort
IMPORT rt_interrupt_nest
Abort_Handler PROC
EXPORT Abort_Handler
STMFD SP!, {R0-R12,LR}
LDR R0, =rt_interrupt_nest
LDR R1, [R0]
CMP R1, #0
DeadLoop BHI DeadLoop ; Abort happened in irq mode, halt system.
BL rt_interrupt_enter
BL rt_hw_trap_abort
BL rt_interrupt_leave
B SWITCH
ENDP
IRQ_Handler PROC
EXPORT IRQ_Handler
STMFD SP!, {R0-R12,LR}
BL rt_interrupt_enter
BL rt_hw_trap_irq
BL rt_interrupt_leave
; if rt_thread_switch_interrput_flag set, jump to
; rt_hw_context_switch_interrupt_do and don't return
SWITCH
LDR R0, =rt_thread_switch_interrput_flag
LDR R1, [R0]
CMP R1, #1
BEQ rt_hw_context_switch_interrupt_do
LDMFD SP!, {R0-R12,LR}
SUBS PC, LR, #4
ENDP
; /*
; * void rt_hw_context_switch_interrupt_do(rt_base_t flag)
; */
rt_hw_context_switch_interrupt_do PROC
EXPORT rt_hw_context_switch_interrupt_do
MOV r1, #0 ; clear flag
STR r1, [r0]
LDMFD sp!, {r0-r12,lr}; reload saved registers
STMFD sp!, {r0-r3} ; save r0-r3
MOV r1, sp
ADD sp, sp, #16 ; restore sp
SUB r2, lr, #4 ; save old task's pc to r2
MRS r3, spsr ; get cpsr of interrupt thread
; switch to SVC mode and no interrupt
MSR cpsr_c, #I_Bit:OR:F_Bit:OR:Mode_SVC
STMFD sp!, {r2} ; push old task's pc
STMFD sp!, {r4-r12,lr}; push old task's lr,r12-r4
MOV r4, r1 ; Special optimised code below
MOV r5, r3
LDMFD r4!, {r0-r3}
STMFD sp!, {r0-r3} ; push old task's r3-r0
STMFD sp!, {r5} ; push old task's cpsr
MRS r4, spsr
STMFD sp!, {r4} ; push old task's spsr
LDR r4, =rt_interrupt_from_thread
LDR r5, [r4]
STR sp, [r5] ; store sp in preempted tasks's TCB
LDR r6, =rt_interrupt_to_thread
LDR r6, [r6]
LDR sp, [r6] ; get new task's stack pointer
LDMFD sp!, {r4} ; pop new task's spsr
MSR spsr_cxsf, r4
LDMFD sp!, {r4} ; pop new task's psr
MSR cpsr_cxsf, r4
LDMFD sp!, {r0-r12,lr,pc} ; pop new task's r0-r12,lr & pc
ENDP
IF :DEF:__MICROLIB
EXPORT __heap_base
EXPORT __heap_limit
ELSE
; User Initial Stack & Heap
AREA |.text|, CODE, READONLY
IMPORT __use_two_region_memory
EXPORT __user_initial_stackheap
__user_initial_stackheap
LDR R0, = Heap_Mem
LDR R1, = (Stack_Mem + IRQ_Stack_Size)
LDR R2, = (Heap_Mem + Heap_Size)
LDR R3, = Stack_Mem
BX LR
ENDIF
END

66
libcpu/arm/sep4020/trap.c Normal file
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@@ -0,0 +1,66 @@
/*
* File : trap.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-25 Bernard first version
* 2010-03-18 zchong for sep4020
*/
#include <rtthread.h>
#include <rthw.h>
#include "sep4020.h"
/**
* @addtogroup SEP4020
*/
/*@{*/
extern rt_isr_handler_t isr_table[];
void rt_hw_trap_irq()
{
rt_uint32_t intstat,intnum;
rt_uint8_t i = 0;
rt_isr_handler_t isr_func;
/* get interrupt source */
intstat = INTC_IFSR;
intnum = intstat;
if (intstat == INTGLOBAL) return;
while(intnum != 0x00000001)
{
intnum = intnum>>1;
i++;
}
/* get interrupt service routine */
isr_func = isr_table[i];
/* turn to interrupt service routine */
isr_func(intstat);
}
void rt_hw_trap_fiq()
{
rt_kprintf("fast interrupt request\n");
}
extern struct rt_thread* rt_current_thread;
void rt_hw_trap_abort()
{
rt_kprintf("Abort occured!!! Thread [%s] suspended.\n",rt_current_thread->name);
rt_thread_suspend(rt_current_thread);
rt_schedule();
}
/*@}*/