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 <common.h>
#include <command.h>

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"
);