117.龙芯2k1000-pmon（16）- linux下升级pmon-编程知识

pmon的升级总是有些不方便，至少是要借助串口和串口工具

如果现场不方便连接串口，是不是可以使用网线升级pmon呢？

答案当然是可行的。

环境：2k1000+linux3.10+麒麟的文件系统

如今我已经把这个工具开发出来了。

GitHub - zhaozhi0810/pmon-ls2k1000-2022 tools/program-2k1000-pmon 目录下包含源码，还有编译出来的工具。

烧录的过程大概需要1分钟左右。可以稍微等待一下！！

我这做了一些选项（修改dtb的部分没有实现，暂时好像没有这个需求）

   选项
   -o gzrom-dtb-new.bin 读出flash中的程序（1m以内）
   -e env.bin 写入env数据：要求有校验和+正确的格式
   -d dtb.bin 写入dtb
   -c gzrom-dtb.bin 比较flash中的与文件是否相同（只比较0-0xfb000这一段）

-w gzrom-dtb.bin 直接写入gzrom-dtb.bin
   gzrom-dtb.bin 与-w的功能相同

我升级了很多次，确定没有问题才分享出来。（但是仍然有风险，风险自担）

下面是源码：（两个c文件一起编译就可以了）

#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <error.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>/*2024-03-02  by dazhi特别注意： ls2k1000 的pmon 不能大于1m ，因为它映射的空间就是1m以内env的起始位置0x1fcff000,大小498字节以内，还有2个字节的校验和，最大不能超过500字节dtb的起始位置0x1fcfb000,大小16k-8字节，8个字节留出来做校验和，最大不能超过16kgzrom的起始位置0x1fc00000，最大1004k字节。选项-o gzrom-dtb-new.bin 读出flash中的程序（1m以内）-e env.bin 写入env数据：要求有校验和+正确的格式-d dtb.bin  写入dtb-c gzrom-dtb.bin  比较flash中的与文件是否相同gzrom-dtb.bin 直接写入gzrom-dtb.bin */#define BIN_FILE_SIZE 1044980   //这是编译的gzrom-dtb.bin的大小//extern int spiflash_main(char *cmd, unsigned long flashbase, unsigned long spiregbase, unsigned long spimem_base_map, ...);
//off 就是flash内部的偏移地址
//extern int fl_erase_device(int off, int size, int verbose);//off 就是flash内部的偏移地址
//extern int fl_program_device(int off, void *data_base, int data_size, int verbose);extern int set_spiflash_regaddr(unsigned long long spireg_base,void* spimem_base);
extern void tgt_flashprogram(int p, int size, void *s);
// off 是flash中的偏移地址，起始地址0
// data_base 是文件内容的缓存起始地址
// data_size 是需要比较的数据大小
// verbose 是否打印信息
extern int fl_verify_device(int off, void *data_base, int data_size, int verbose);int PAGE_SIZE;
int PAGE_MASK;#define FLASH_SIZE 0x500000void printf_usage(char* name)
{printf("USAGE:\n");printf("%s [-o gzrom-dtb-new.bin] : read flash(1M) to  file gzrom-dtb-new.bin\n",name);printf("%s <-e env.bin> : write env.bin to flash offset 0xff000,size 500Bytes\n",name);printf("%s <-d dtb.bin> : write dtb.bin to flash offset 0xfb000,size 16KBytes\n",name);printf("%s <-c gzrom-dtb.bin> : compare flash(ahout 600K) and file gzrom-dtb.bin,the same or not\n",name);printf("%s <-w gzrom-dtb.bin> : write gzrom-dtb.bin to flash offset 0,size 1044980Bytes\n",name);printf("%s <gzrom-dtb.bin> : the same with -w\n",name);printf("others ,not support!!!!\n");
}unsigned int flash_buf[FLASH_SIZE];
int main(int argc, char **argv)
{int fd,mem_fd,spimem_physaddr,spimem_map_len,spireg_physaddr,spireg_map_len,spireg_offset;void *spimem_base = NULL,*spireg_base= NULL,*buf=NULL;int i;int err;unsigned char* pbuf;int option = 0;   //0表示读出来char* filename = "gzrom-dtb-new.bin";   //文件名struct stat statbuf;if(argc > 3) //参数多余3个{printf_usage(argv[0]);return -1;}else if(argc == 2){printf("len = %d\n",strlen(argv[1]));if(strlen(argv[1]) > 8){printf("name = %s ,%s\n",argv[1],argv[1]+(strlen(argv[1])-4));if(strcmp(".bin",argv[1]+(strlen(argv[1])-4)) != 0)  //是.bin 结尾的吗{printf_usage(argv[0]);return -1;}}else{printf_usage(argv[0]);return -1;}option = 4;  //write gzrom-dtb ro flashfilename = argv[1];  //保存文件名；}else if(argc == 1){option = 0;}else  //argc == 3{filename = argv[2];  //保存文件名；if(strcmp(argv[1], "-o")==0){option = 0;}else if(strcmp(argv[1], "-e")==0){option = 1;  //写环境变量 env}else if(strcmp(argv[1], "-d")==0){option = 2;  //写dtb文件 }else if(strcmp(argv[1], "-c")==0){option = 3;  //比较文件}else if(strcmp(argv[1], "-w")==0){option = 4;  //write gzrom-dtb ro flash	}else{  //其他不能识别printf_usage(argv[0]);return -1;} }printf("opt = %d filename = %s\n",option,filename);spimem_physaddr = 0x1fc00000;   //0x1d000000; //3a5000的地址   //0x1fc00000 2k1000的地址spimem_map_len = 0x100000;//1MPAGE_SIZE = getpagesize();PAGE_MASK = (~(PAGE_SIZE-1));mem_fd = open("/dev/mem", O_RDWR|O_SYNC);if(mem_fd == -1)error(-1,errno,"error open /dev/mem\n");//spi 内存读写方式spimem_base = mmap(0, spimem_map_len, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, spimem_physaddr&PAGE_MASK);if(spimem_base == MAP_FAILED)error(err,errno,"spimem_base map failed.\n");spireg_physaddr = 0x1fff0220;//0x1fe001f0;    //0x1fff0220 2k1000的地址spireg_map_len = 0x1000; //4Kspireg_offset = spireg_physaddr & (PAGE_SIZE-1);   //偏移地址spireg_base = (unsigned char*)mmap(NULL, spireg_map_len, PROT_READ|PROT_WRITE, MAP_SHARED, mem_fd, spireg_physaddr&PAGE_MASK);if(spireg_base == MAP_FAILED){error(err,errno,"spireg_base map failed.\n");return -1;}close(mem_fd);pbuf = spimem_base;//printf("spireg_base = %p\n",spireg_base);// 需要设置一下才能用啊。。。。set_spiflash_regaddr((unsigned long long) spireg_base + spireg_offset,spimem_base);// for(i=0;i<100;i++)// {//     printf("%02hhx ",pbuf[i]);//     if(i%16 ==15)//         printf("\n");// }//是读操作if(option == 0)  //读出flash的内容，大小BIN_FILE_SIZE个字节{fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC,0666);if(fd == -1)error(err,errno,"error open file.\n");int ret =	write(fd,pbuf,BIN_FILE_SIZE);  //一次性写进去printf("read size = %d\n",ret);close(fd);}else if(option == 1) //写环境变量 env{//1 打开env。bin文件，限制文件不能大于500字节fd = open(filename, O_RDONLY);if(fd == -1)error(err,errno,"error open file. %s\n",filename);int size = lseek(fd,0,SEEK_END);  //长度if(size > 500){printf("file size too large (len=%d > 500Bytes)\n",size);munmap(spireg_base,spireg_map_len);munmap(spimem_base,spimem_map_len);  close(fd);return -1;}lseek(fd,0,SEEK_SET);  //buf = mmap(0, 500, PROT_READ, MAP_SHARED, fd, 0);if(buf == MAP_FAILED)error(err,errno,"map failed.%s\n",filename);// 第一个参数是 flash中的地址，从0开始// 第二个参数是 写入字节数// 第三个参数需要写入内容缓存的起始地址tgt_flashprogram(0xff000, size, buf);close(fd);//取消映射munmap(buf,500);printf("erase and program down\n");}else if(option == 4) //write gzrom-dtb ro flash{if(strncmp("gzrom",filename,5) != 0 ){printf_usage(argv[0]);munmap(spireg_base,spireg_map_len);munmap(spimem_base,spimem_map_len);return -1;}//1 打开gzrom-dtb.bin文件，限制文件大小fd = open(filename, O_RDONLY);if(fd == -1)error(err,errno,"error open file. %s\n",filename);int size = lseek(fd,0,SEEK_END);  //长度if(size != BIN_FILE_SIZE){printf("file size !=  %d\n",size,BIN_FILE_SIZE);munmap(spireg_base,spireg_map_len);munmap(spimem_base,spimem_map_len);  close(fd);return -1;}lseek(fd,0,SEEK_SET);  //buf = mmap(0, BIN_FILE_SIZE, PROT_READ, MAP_SHARED, fd, 0);if(buf == MAP_FAILED)error(err,errno,"map failed.%s\n",filename);// 第一个参数是 flash中的地址，从0开始// 第二个参数是 写入字节数// 第三个参数需要写入内容缓存的起始地址tgt_flashprogram(0, BIN_FILE_SIZE, buf);   //起始地址是0printf("program %s done\n",filename);close(fd);//取消映射munmap(buf,BIN_FILE_SIZE);//printf("erase and program down\n");}else if(option == 3)  //比较文件，只比较前面0~0xfb000,后面的dtb没有必要比较{if(strncmp("gzrom",filename,5) != 0 ){printf_usage(argv[0]);munmap(spireg_base,spireg_map_len);munmap(spimem_base,spimem_map_len);return -1;}//1 打开gzrom-dtb.bin文件，限制文件大小fd = open(filename, O_RDONLY);if(fd == -1)error(err,errno,"error open file. %s\n",filename);int size = lseek(fd,0,SEEK_END);  //长度if(size != BIN_FILE_SIZE){printf("file size !=  %d\n",size,BIN_FILE_SIZE);munmap(spireg_base,spireg_map_len);munmap(spimem_base,spimem_map_len);  close(fd);return -1;}lseek(fd,0,SEEK_SET);  //buf = mmap(0, BIN_FILE_SIZE, PROT_READ, MAP_SHARED, fd, 0);if(buf == MAP_FAILED)error(err,errno,"map failed.%s\n",filename);int ret = fl_verify_device(0, buf, 0xfb000, 1);printf("compare %s done\n",filename);if(ret == 1)printf("file in system is the same with the file %s\n",filename);else if(ret == 0)printf("you can update this %s now!!!\n",filename);close(fd);//取消映射munmap(buf,BIN_FILE_SIZE);}munmap(spireg_base,spireg_map_len);munmap(spimem_base,spimem_map_len);     return 0;
}

这个spi_w 来自pmon的源码，但是有小部分修改

/*
* @Author: dazhi
* @Date:   2024-03-05 15:29:25
* @Last Modified by:   dazhi
* @Last Modified time: 2024-03-06 14:33:40
*/
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <error.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
//#include <pmon.h>
//#include <include/types.h>
//#include <pflash.h>#define TRUE 1
#define FALSE 0//#define SPI_BASE  0x1fff0220
//#define PMON_ADDR 0xa1000000
//
unsigned long long SPI_BASE;   //reg 的基地址void* spi_mem_base_addr;   //lonsoon 映射的内存地址#define PAGE_SIZE_4K 0x1000    //4k
#define PAGE_MASK_4K (PAGE_SIZE_4K-1)#define FLASH_ADDR 0x000000#define SPCR      0x0
#define SPSR      0x1
#define TXFIFO    0x2
#define RXFIFO    0x2
#define SPER      0x3
#define PARAM     0x4
#define SOFTCS    0x5
#define PARAM2    0x6#define WFFULL (1<<3)   //发送缓存满
#define RFEMPTY 1
#define KSEG1_STORE8(addr,val)	 *(volatile char *)(addr) = val
#define KSEG1_LOAD8(addr)	 *(volatile char *)(addr) #define SET_SPI(addr,val)        KSEG1_STORE8(SPI_BASE+addr,val)
#define GET_SPI(addr)            KSEG1_LOAD8(SPI_BASE+addr)
#define NEW_SPI_ZZstatic int delay(int value)
{int i, j;for (i = 0; i < value; i++) {for (j = 0; j < 100; j++) {;}}return 0;
}int set_spiflash_regaddr(unsigned long long spireg_base,void* spimem_base)
{   //寄存器的偏移地址SPI_BASE = spireg_base;spi_mem_base_addr = spimem_base;//printf("spi_base = %llx\n",SPI_BASE);
}int write_sr(char val);
void spi_initw()
{ //printf("11spi_base = %llx\n",SPI_BASE);SET_SPI(SPSR, 0xc0);   SET_SPI(PARAM, 0x40);    //这里没有读使能了         //espr:0100SET_SPI(SPER, 0x05); //spre:01 SET_SPI(PARAM2,0x01); SET_SPI(SPCR, 0x50);//printf("11spi_base = %llx\n",SPI_BASE);
}void spi_initr()
{SET_SPI(PARAM, 0x47);             //espr:0100
}#ifdef NEW_SPI_ZZ//发送数据，需配合写使能，片选操作。
static unsigned char spi_send_byte(unsigned char val)
{	while((GET_SPI(SPSR))&WFFULL);  //发送缓存满！！，等待SET_SPI(TXFIFO,val);while((GET_SPI(SPSR))&RFEMPTY); //等待发送结束return GET_SPI(RXFIFO); //读缓存
}
#endif///read status reg /int read_sr(void)
{int val;SET_SPI(SOFTCS,0x01);  //设置片选#ifdef NEW_SPI_ZZspi_send_byte(0x05);val = spi_send_byte(0x00);
#elseSET_SPI(TXFIFO,0x05);  //发送命令while((GET_SPI(SPSR))&RFEMPTY);  //等待发送结束val = GET_SPI(RXFIFO);  //读缓存SET_SPI(TXFIFO,0x00);	//写数据0，是为了读取一个数据while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY); //等待发送结束val = GET_SPI(RXFIFO); //读缓存
#endif	SET_SPI(SOFTCS,0x11);  //取消片选return val;
}#ifdef NEW_SPI_ZZ
static void spi_flash_check_busy(void)
{unsigned char res;do{res = read_sr();  //读flash状态寄存器}while((res&0x01));  //忙则继续等
}
#endifset write enable//
int set_wren(void)
{int res;#ifdef NEW_SPI_ZZ//spi_flash_check_busy();SET_SPI(SOFTCS,0x01);  //片选spi_send_byte(0x06);  //写使能	SET_SPI(SOFTCS,0x11);   //取消片选spi_flash_check_busy();return 1;
#else	res = read_sr();  //读flash状态寄存器while(res&0x01 == 1)  //忙则继续等{res = read_sr();  }SET_SPI(SOFTCS,0x01);  //片选SET_SPI(TXFIFO,0x6);    //发出命令0x6while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){  //等待发送接收}GET_SPI(RXFIFO);  //读接收缓存，数据丢掉SET_SPI(SOFTCS,0x11);   //取消片选return 1;
#endif
}///write status reg///
int write_sr(char val)
{int res;
#ifdef NEW_SPI_ZZset_wren(); //flash写使能操作//spi_flash_check_busy();SET_SPI(SOFTCS,0x01);  //片选spi_send_byte(0x01);  //写状态寄存器	spi_send_byte(val);  //写入值
#else	set_wren();	//flash写使能操作res = read_sr();  //读flash状态寄存器while(res&0x01 == 1)  //忙则继续等{res = read_sr();}SET_SPI(SOFTCS,0x01);  //片选SET_SPI(TXFIFO,0x01);  //发出命令0x1，这里是写发送缓存，写入发送缓存的数据，就会发送给flashwhile((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){ //读控制器的状态，读缓存为空吗？没收完整就是空     			}				//发送是串行的，数据写入缓存，到发送完是有个时间的。GET_SPI(RXFIFO);  //读接收缓存，数据丢掉SET_SPI(TXFIFO,val);  //再发送值，由参数传入while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){   //等待发送完    			}GET_SPI(RXFIFO);  //读接收缓存，数据丢掉
#endifSET_SPI(SOFTCS,0x11);  //取消片选return 1;	
}///erase all memory/
int erase_all(void)
{int res;int i=1;spi_initw();set_wren();res = read_sr();while(res&0x01 == 1){res = read_sr();}SET_SPI(SOFTCS,0x1);SET_SPI(TXFIFO,0xC7);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){      			}GET_SPI(RXFIFO);SET_SPI(SOFTCS,0x11);while(i++){if(read_sr() & 0x1 == 0x1){if(i % 10000 == 0)printf(".");}else{printf("done...\n");break;}   }return 1;
}void spi_read_id(void)
{unsigned char val;spi_initw();val = read_sr();while(val&0x01 == 1){val = read_sr();}/*CE 0*/SET_SPI(SOFTCS,0x01);/*READ ID CMD*/SET_SPI(TXFIFO,0x9f);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}GET_SPI(RXFIFO);/*Manufacturer’s ID*/SET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);printf("Manufacturer's ID:         %x\n",val);/*Device ID:Memory Type*/SET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);printf("Device ID-memory_type:     %x\n",val);/*Device ID:Memory Capacity*/SET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);printf("Device ID-memory_capacity: %x\n",val);/*CE 1*/SET_SPI(SOFTCS,0x11);}#ifdef NEW_SPI_ZZ
#define PAGE_SIZE 0x100  //# 256B
//返回写入的字节数
static int spi_write_pagebytes(unsigned int addr,unsigned char *data,int len)
{unsigned int i = 0;//	printf("1 addr = %#x i = %u, len = %d data[0] = %hhx\n",addr,i,len,data[0]);if(len > PAGE_SIZE)len = PAGE_SIZE;   //最多一次编程1pagei = addr & (0xff);  //起始地址是不是256的整数倍if(len + i > PAGE_SIZE) //页内有偏移，从写入的位置开始，到结束不能超过页的边界len = PAGE_SIZE - i; //写入页内字节数//	printf("addr = %#x i = %u, len = %d data[0] = %hhx\n",addr,i,len,data[0]);//1. 写使能set_wren();//2 .片选，页编程命令SET_SPI(SOFTCS,0x01);/*CE 0*/spi_send_byte(0x02);  //写页编程指令//3. 发送地址spi_send_byte((addr)>>16);  //写地址spi_send_byte((addr)>>8);  //写地址spi_send_byte(addr);  //写地址//4. 发送数据for(i=0;i<len;i++){spi_send_byte(data[i]);  //写地址}//5.取消片选  /*CE 1*/SET_SPI(SOFTCS,0x11);  //取消片选spi_flash_check_busy(); //等待数据写入完成return len;   //返回实际写入的字节数
}//写入数据
static void spi_write_bytes(unsigned int addr,unsigned char *data,int len)
{int ret = 0;while(len>0){delay(3000);    //必须延时，否则写失败ret = spi_write_pagebytes(addr,data,len);  //返回写入了多少个字节//	printf("spi_write_bytes ret = %d\n",ret);addr+=ret;  //指针向后移动data+=ret;  //指针向后移动len -= ret;//	udelay(10000);    //必须延时，否则写失败//dotik(32, 0);			//显示旋转的字符}	
}
#endifvoid spi_write_byte(unsigned int addr,unsigned char data)
{
#ifdef NEW_SPI_ZZspi_write_pagebytes(addr,&data,1);
#else/*byte_program,CE 0, cmd 0x2,addr2,addr1,addr0,data in,CE 1*/unsigned char addr2,addr1,addr0;unsigned char val;addr2 = (addr & 0xff0000)>>16;addr1 = (addr & 0x00ff00)>>8;addr0 = (addr & 0x0000ff);set_wren();val = read_sr();while(val&0x01 == 1){val = read_sr();}SET_SPI(SOFTCS,0x01);/*CE 0*/SET_SPI(TXFIFO,0x2);/*byte_program */while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);/*send addr2*/SET_SPI(TXFIFO,addr2);     while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);/*send addr1*/SET_SPI(TXFIFO,addr1);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);/*send addr0*/SET_SPI(TXFIFO,addr0);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);/*send data(one byte)*/SET_SPI(TXFIFO,data);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}val = GET_SPI(RXFIFO);/*CE 1*/SET_SPI(SOFTCS,0x11);
#endif
}
// int write_pmon_byte(int argc,char ** argv)
// {
//     unsigned int addr;
//    unsigned char val; 
//     if(argc != 3){
//         printf("\nuse: write_pmon_byte  dst(flash addr) data\n");
//         return -1;
//     }
//     addr = strtoul(argv[1],0,0);
//     val = strtoul(argv[2],0,0);
//     spi_write_byte(addr,val);
// 	return 0;// }// int write_pmon(int argc,char **argv)
// {
// 	long int j=0;
//     unsigned char val;
//     unsigned int ramaddr,flashaddr,size;
// 	if(argc != 4){
//         printf("\nuse: write_pmon src(ram addr) dst(flash addr) size\n");
//         return -1;
//     }//     ramaddr = strtoul(argv[1],0,0);
//     flashaddr = strtoul(argv[2],0,0);
//     size = strtoul(argv[3],0,0);// 	spi_initw();
//     write_sr(0);
// // read flash id command
//     spi_read_id();
// 	val = GET_SPI(SPSR);
// 	printf("====spsr value:%x\n",val);// 	SET_SPI(0x5,0x10);
// // erase the flash     
// 	write_sr(0x00);
// //	erase_all();
//     printf("\nfrom ram 0x%08x  to flash 0x%08x size 0x%08x \n\nprogramming            ",ramaddr,flashaddr,size);
//     for(j=0;size > 0;flashaddr++,ramaddr++,size--,j++)
//     {
//         spi_write_byte(flashaddr,*((unsigned char*)ramaddr));
//         if(j % 0x1000 == 0)
//             printf("\b\b\b\b\b\b\b\b\b\b0x%08x",j);
//     }
//     printf("\b\b\b\b\b\b\b\b\b\b0x%08x end...\n",j);//     SET_SPI(0x5,0x11);
// 	return 1;
// }int read_pmon_byte(unsigned int addr,unsigned int num)
{unsigned char val,data;val = read_sr();while(val&0x01 == 1){val = read_sr();}SET_SPI(0x5,0x01);
// read flash command SET_SPI(TXFIFO,0x03);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}GET_SPI(RXFIFO);// addrSET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}GET_SPI(RXFIFO);SET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}GET_SPI(RXFIFO);SET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}GET_SPI(RXFIFO);SET_SPI(TXFIFO,0x00);while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){}data = GET_SPI(RXFIFO);SET_SPI(0x5,0x11);return data;
}// int read_pmon(int argc,char **argv)
// {
// 	unsigned char addr2,addr1,addr0;
// 	unsigned char data;
// 	int val,base=0;
// 	int addr;
// 	int i;
//         if(argc != 3)
//         {
//             printf("\nuse: read_pmon addr(flash) size\n");
//             return -1;
//         }
//         addr = strtoul(argv[1],0,0);
//         i = strtoul(argv[2],0,0);
// 	spi_initw();
// 	val = read_sr();
// 	while(val&0x01 == 1)
// 	{
// 		val = read_sr();
// 	}// 	SET_SPI(0x5,0x01);
// // read flash command 
// 	SET_SPI(TXFIFO,0x03);
// 	while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){// 	}
// 	GET_SPI(RXFIFO);// // addr
// 	SET_SPI(TXFIFO,((addr >> 16)&0xff));
// 	while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){// 	}
//         GET_SPI(RXFIFO);// 	SET_SPI(TXFIFO,((addr >> 8)&0xff));
// 	while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){// 	}
// 	GET_SPI(RXFIFO);// 	SET_SPI(TXFIFO,(addr & 0xff));
// 	while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){// 	}
// 	GET_SPI(RXFIFO);
// // addr end//         printf("\n");
//         while(i--)
// 	{
// 		SET_SPI(TXFIFO,0x00);
// 		while((GET_SPI(SPSR))&RFEMPTY == RFEMPTY){// 		}
// 	        data = GET_SPI(RXFIFO);
//                 if(base % 16 == 0 ){
//                     printf("0x%08x    ",base);
//                 }
//                 printf("%02x ",data);
//                 if(base % 16 == 7)
//                     printf("  ");
//                 if(base % 16 == 15)
//                     printf("\n");
// 		base++;	
// 	}
//         printf("\n");
// 	return 1;// }int spi_erase_area(unsigned int saddr,unsigned int eaddr,unsigned sectorsize)
{unsigned int addr;spi_initw(); for(addr=saddr;addr<eaddr;addr+=sectorsize){SET_SPI(SOFTCS,0x11);set_wren();write_sr(0x00);while(read_sr()&1);set_wren();SET_SPI(SOFTCS,0x01);/* * 0x20 erase 4kbyte of memory array* 0x52 erase 32kbyte of memory array* 0xd8 erase 64kbyte of memory array                                                                                                           */SET_SPI(TXFIFO,0x20);while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(TXFIFO,addr >> 16);while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(TXFIFO,addr >> 8);while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(TXFIFO,addr);while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(SOFTCS,0x11);while(read_sr()&1);}SET_SPI(SOFTCS,0x11);delay(10);return 0;
}int spi_write_area(int flashaddr,char *buffer,int size)
{int j;spi_initw();    //spi控制设置为写模式
//	SET_SPI(0x5,0x10); //spi控制器，设置片选，输出低，低有效write_sr(0x00);  //写flash的状态寄存器，不是控制器的
#ifdef NEW_SPI_ZZspi_write_bytes(flashaddr,buffer,size);
#elsefor(j=0;size > 0;flashaddr++,size--,j++){spi_write_byte(flashaddr,buffer[j]);   //写入数据，一个字节一个字节dotik(32, 0);			//延时}
#endif
//	SET_SPI(SOFTCS,0x11); //取消片选，之前写入的数据是先到flash的缓存，然后才会编程到flash中，这样速度快一些delay(10);	//延时，结束，写入数据之后，flash会忙一阵子（把缓存的数据编程到flash中去）return 0;
}int spi_read_area(int flashaddr,char *buffer,int size)
{int i;spi_initw();SET_SPI(SOFTCS,0x01);SET_SPI(TXFIFO,0x03);while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(TXFIFO,flashaddr>>16);     while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(TXFIFO,flashaddr>>8);     while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);SET_SPI(TXFIFO,flashaddr);     while((GET_SPI(SPSR))&RFEMPTY);GET_SPI(RXFIFO);for(i=0;i<size;i++){SET_SPI(TXFIFO,0);     while((GET_SPI(SPSR))&RFEMPTY);buffer[i] = GET_SPI(RXFIFO);}SET_SPI(SOFTCS,0x11);delay(10);return 0;
}//off 就是flash内部的偏移地址
int fl_erase_device(int off, int size, int verbose)
{//struct fl_map *map;//int off = (int)fl_base;//map = fl_find_map(fl_base);//off = (int)(fl_base - map->fl_map_base) + map->fl_map_offset;spi_erase_area(off,off+size,0x1000);spi_initr();return 0;
}//off 就是flash内部的偏移地址
int fl_program_device(int off, void *data_base, int data_size, int verbose)
{//struct fl_map *map;//int off = (int)fl_base;//map = fl_find_map(fl_base);//off = (int)(fl_base - map->fl_map_base) + map->fl_map_offset;spi_write_area(off,data_base,data_size);spi_initr();return 0;
}// off 是flash中的偏移地址，起始地址0
// data_base 是文件内容的缓存起始地址
// data_size 是需要比较的数据大小
// verbose 是否打印信息
int fl_verify_device(int off, void *data_base, int data_size, int verbose)
{int ok = 0;int i;if(data_size == -1 || data_base == NULL) {printf("fl_verify_device : data_size == -1 || data_base == NULL\n");return(-4);		/* Bad parameters */}if((data_size + off) > 0x100000) {    //大于1m不行printf("fl_verify_device : (data_size + off) > 0x100000\n");return(-4);	/* Size larger than device array */}if(verbose) {printf("Verifying FLASH. ");}//直接用文件与映射的地址if(memcmp(data_base,spi_mem_base_addr+off,data_size) == 0)ok = 1;elseprintf("fl_verify_device with error!!\n");if(verbose && ok) {printf("\b No Errors found.\n");}return(ok);
}//p 表示 flash 内部的起始地址，从0开始算，小于1MB
//size 表示字节数
//s 表示要写入的内容缓存起始地址
void tgt_flashprogram(int p, int size, void *s)
{printf("Programming flash %x:%x into %x\n", s, size, p);if (fl_erase_device(p, size, TRUE)) {printf("Erase failed!\n");return;}printf("Erase done!!\n");if (fl_program_device(p, s, size, TRUE)) {printf("Programming failed!\n");}printf("Program done!!\n");fl_verify_device(p, s, size, TRUE);printf("Verify done!!\n");
}

makefile ，注意要设置一下编译环境

CC= mips64el-loongson-linux-gccall: mymap.o spi_w.o$(CC) --static  -o  program_pmon_ls2k1000 $^%.o:%.c$(CC) -c $^clean:rm -f program_pmon_ls2k1000 *.o