在U-Boot中添加自定义命令以实现自动下载程序【转】

static int do_mycmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
 // Do Something
}

U_BOOT_CMD(
 mycmd, 1, 1, do_mycmd,
 "short description",
 "help"
);

U_BOOT_CMD(name,maxargs,rep,cmd,usage,help)

#define CONFIG_CMD_MYCMD

obj-$(CONFIG_CMD_MYCMD) += mycmd.o

/*
 * Run a command using the selected parser.
 *
 * @param cmd Command to run
 * @param flag Execution flags (CMD_FLAG_...)
 * @return 0 on success, or != 0 on error.
 */
int run_command(const char *cmd, int flag);

#include 
#include 

static int do_download(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
 int i;

 if(argc == 1)
 printf("param:\nu : U-Boot;\nl : Linux;\nf : File System.\n");

 const char * const cmd_uboot[5] = {
 "nfs 30000000 /home/gmf/nfs/u-boot.bin",
 "protect off all",
 "erase 0 +$filesize",
 "cp.b 30000000 0 $filesize",
 "reset",
 };

 const char * const cmd_linux[4] = {
 "nfs 30008000 /home/gmf/nfs/uImage",
 "nand erase 60000 300000",
 "nand write.jffs2 30008000 60000 300000",
 "bootm 30008000",
 };

 const char * const cmd_fs[4] = {
 "nfs 32000000 /home/gmf/nfs/ramdisk.gz",
 "nand erase 560000 $filesize",
 "nand write.jffs2 32000000 560000 $filesize",
 "bootd",
 };

 switch(*argv[1]) {
 case 'u':
 case 'U':
 for(i = 0; i <5; i++)
 {
 printf("\n##########\n");
 printf(cmd_uboot[i]);
 printf("\n##########\n");
 run_command(cmd_uboot[i], 0);
 }
 break;

 case 'l':
 case 'L':
 for(i = 0; i <4; i++)
 {
 printf("\n##########\n");
 printf(cmd_linux[i]);
 printf("\n##########\n");
 run_command(cmd_linux[i], 0);
 }
 break;

 case 'f':
 case 'F':
 for(i = 0; i <4; i++)
 {
 printf("\n##########\n");
 printf(cmd_fs[i]);
 printf("\n##########\n");
 run_command(cmd_fs[i], 0);
 }
 break;
 }
 return 0;
}


U_BOOT_CMD(
 download, 2, 1, do_download,
 "Download File (Uboot, Linux or FS)",
 " - Download File:\nu : U-Boot;\nl : Linux;\nf : File System.\n"
);