Linux开发 | uboot中添加命令之helloworld
uboot版本及实验硬件
UBOOT官网主页UBOOT源码下载
U-Boot 1.3.4-dirty (Jul 25 2021 - 15:13:30) for x210@Flyer
CPU: S5PV210@1000MHz(OK)
APLL = 1000MHz, HclkMsys = 200MHz, PclkMsys = 100MHz
MPLL = 667MHz, EPLL = 96MHz
HclkDsys = 166MHz, PclkDsys = 83MHz
HclkPsys = 133MHz, PclkPsys = 66MHz
SCLKA2M = 200MHz
Serial = CLKUART
Board: X210BV3S
DRAM: 512 MB
Flash: 8 MB
SD/MMC: 3728MB
*** Warning - using default environment
In: serial
Out: serial
Err: serial
[LEFT UP] boot mode
checking mode for fastboot ...
Hit any key to stop autoboot: 0
x210 #
u-boot版本：1.3.4-dirty (Jul 25 2021 - 15:13:30) for x210@Flyer
开发板：X210BV3S
u-boot工程源码（common目录）中添加hello命令源码（cmd_hello.c）
[fly@fly-vm common]$ ls
ace_sha1.c cmd_flash.c cmd_setexpr.c fdt_support.c
ACEX1K.c cmd_fpga.c cmd_sf.c flash.c
altera.c cmd_hello.c cmd_spi.c fpga.c
bedbug.c cmd_i2c.c cmd_strings.c gunzip.c
circbuf.c cmd_ide.c cmd_terminal.c hush.c
cmd_ambapp.c cmd_immap.c cmd_ubi.c image.c
cmd_android.c cmd_itest.c cmd_universe.c kgdb.c
cmd_autoscript.c cmd_jffs2.c cmd_usb.c lcd.c
cmd_bdinfo.c cmd_load.c cmd_usbd.c lists.c
cmd_bedbug.c cmd_log.c cmd_vfd.c lynxkdi.c
cmd_bmp.c cmd_mac.c cmd_ximg.c main.c
cmd_boot.c cmd_mem.c command.c Makefile
cmd_bootldr.c cmd_mfsl.c console.c memsize.c
cmd_bootm.c cmd_mii.c crc16.c miiphybb.c
cmd_cache.c cmd_misc.c cyclon2.c miiphyutil.c
cmd_console.c cmd_mmc.c devices.c secure_boot.c
cmd_cplbinfo.c cmd_mmc_fdisk.c dlmalloc.c serial.c
cmd_date.c cmd_movi.c dlmalloc.src soft_i2c.c
cmd_dcr.c cmd_mp.c docecc.c soft_spi.c
cmd_df.c cmd_mtdparts.c env_auto.c spartan2.c
cmd_diag.c cmd_nand.c env_common.c spartan3.c
cmd_display.c cmd_net.c env_dataflash.c s_record.c
cmd_doc.c cmd_nvedit.c env_eeprom.c stratixII.c
cmd_dtt.c cmd_onenand.c env_flash.c usb.c
cmd_eeprom.c cmd_otp.c environment.c usb_kbd.c
cmd_elf.c cmd_pci.c env_movi.c usb_storage.c
cmd_ext2.c cmd_pcmcia.c env_nand.c virtex2.c
cmd_fastboot.c cmd_portio.c env_nowhere.c xilinx.c
cmd_fat.c cmd_reginfo.c env_nvram.c xyzModem.c
cmd_fdc.c cmd_reiser.c env_onenand.c
cmd_fdos.c cmd_sata.c env_sf.c
cmd_fdt.c cmd_scsi.c exports.c
cmd_hello.c源码
/*******************************************************************
* > File Name: cmd_hello.c
* > Author: fly
* > Create Time: 2020年10月23日 星期五 08时48分46秒
*================================================================*/
#include <command.h>
#include <common.h>
#ifdef CONFIG_CMD_HELLO
int do_hello(cmd_tbl_t *cmdtp, int flag, int argc, char *argv){
printf("Hello, This is my U-Boot command test. @fly\n");
return 0;
}
/* -------------------------------------------------------------------- */
U_BOOT_CMD(
hello, 1, 1, do_hello,
"hello - test\n",
NULL
);
#endif
U_BOOT_CMD宏参数有6个：
第一个参数：添加的命令的名字
第二个参数：添加的命令最多有几个参数(注意，假如你设置的参数个数是3，而实际的参数个数是4，那么执行命令会输出帮助信息的)
第三个参数：是否重复(1重复，0不重复)（即按下Enter键的时候，自动执行上次的命令）
第四个参数：执行函数，即运行了命令具体做啥会在这个函数中体现出来
第五个参数：帮助信息（short）
第六个参数：帮助信息（long）
在uboot/include/config_cmd_default.h添加宏控制
#define CONFIG_CMD_HELLO
common/Makefile文件添加cmd_xx.o，实现命令编译，完成命令添加
COBJS-y += cmd_hello.o
执行结果
x210 # help
? - alias for 'help'
autoscr - run script from memory
base - print or set address offset
bdinfo - print Board Info structure
boot - boot default, i.e., run 'bootcmd'
bootd - boot default, i.e., run 'bootcmd'
bootelf - Boot from an ELF image in memory
bootm - boot application image from memory
bootp - boot image via network using BootP/TFTP protocol
bootvx - Boot vxWorks from an ELF image
cmp - memory compare
coninfo - print console devices and information
cp - memory copy
crc32 - checksum calculation
dcache - enable or disable data cache
dhcp - invoke DHCP client to obtain IP/boot params
dnw - initialize USB device and ready to receive for Windows server (specific)
echo - echo args to console
erase - erase FLASH memory
exit - exit script
ext2format - disk format by ext2
ext2load- load binary file from a Ext2 filesystem
ext2ls - list files in a directory (default /)
ext3format - disk format by ext3
fastboot- use USB Fastboot protocol
fatformat - disk format by FAT32
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls - list files in a directory (default /)
fdisk - fdisk for sd/mmc.
flinfo - print FLASH memory information
go - start application at address 'addr'
hello - test
help - print online help
icache - enable or disable instruction cache
iminfo - print header information for application image
imls - list all images found in flash
imxtract- extract a part of a multi-image
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
md - memory display
mm - memory modify (auto-incrementing)
MMC sub systemprint MMC informationmovi - sd/mmc r/w sub system for SMDK board
mtest - simple RAM test
mw - memory write (fill)
nfs - boot image via network using NFS protocol
nm - memory modify (constant address)
ping - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
protect - enable or disable FLASH write protection
rarpboot- boot image via network using RARP/TFTP protocol
reset - Perform RESET of the CPU
reginfo - print register information
reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
sdfuse - read images from FAT partition of SD card and write them to booting device.
setenv - set environment variables
sleep - delay execution for some time
test - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
version - print monitor version
x210 # hello
Hello, This is my U-Boot command test. @fly
x210 #
Hello, This is my U-Boot command test. @fly
x210 #
拓展
command.c文件
/*
* (C) Copyright 2000-2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Command Processor Table
*/
#include <common.h>
#include <command.h>
int
do_version (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
extern char version_string[];
printf ("\n%s\n", version_string);
return 0;
}
U_BOOT_CMD(
version, 1, 1, do_version,
"version - print monitor version\n",
NULL
);
#if defined(CONFIG_CMD_ECHO)
int
do_echo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int i, putnl = 1;
for (i = 1; i < argc; i++) {
char *p = argv[i], c;
if (i > 1)
putc(' ');
while ((c = *p++) != '\0') {
if (c == '\\' && *p == 'c') {
putnl = 0;
p++;
} else {
putc(c);
}
}
}
if (putnl)
putc('\n');
return 0;
}
U_BOOT_CMD(
echo, CFG_MAXARGS, 1, do_echo,
"echo - echo args to console\n",
"[args..]\n"
" - echo args to console; \\c suppresses newline\n"
);
#endif
#ifdef CFG_HUSH_PARSER
int
do_test (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
char **ap;
int left, adv, expr, last_expr, neg, last_cmp;
/* args? */
if (argc < 3)
return 1;
#if 0
{
printf("test:");
left = 1;
while (argv[left])
printf(" %s", argv[left++]);
}
#endif
last_expr = 0;
left = argc - 1; ap = argv + 1;
if (left > 0 && strcmp(ap[0], "!") == 0) {
neg = 1;
ap++;
left--;
} else
neg = 0;
expr = -1;
last_cmp = -1;
last_expr = -1;
while (left > 0) {
if (strcmp(ap[0], "-o") == 0 || strcmp(ap[0], "-a") == 0)
adv = 1;
else if (strcmp(ap[0], "-z") == 0 || strcmp(ap[0], "-n") == 0)
adv = 2;
else
adv = 3;
if (left < adv) {
expr = 1;
break;
}
if (adv == 1) {
if (strcmp(ap[0], "-o") == 0) {
last_expr = expr;
last_cmp = 0;
} else if (strcmp(ap[0], "-a") == 0) {
last_expr = expr;
last_cmp = 1;
} else {
expr = 1;
break;
}
}
if (adv == 2) {
if (strcmp(ap[0], "-z") == 0)
expr = strlen(ap[1]) == 0 ? 1 : 0;
else if (strcmp(ap[0], "-n") == 0)
expr = strlen(ap[1]) == 0 ? 0 : 1;
else {
expr = 1;
break;
}
if (last_cmp == 0)
expr = last_expr || expr;
else if (last_cmp == 1)
expr = last_expr && expr;
last_cmp = -1;
}
if (adv == 3) {
if (strcmp(ap[1], "=") == 0)
expr = strcmp(ap[0], ap[2]) == 0;
else if (strcmp(ap[1], "!=") == 0)
expr = strcmp(ap[0], ap[2]) != 0;
else if (strcmp(ap[1], ">") == 0)
expr = strcmp(ap[0], ap[2]) > 0;
else if (strcmp(ap[1], "<") == 0)
expr = strcmp(ap[0], ap[2]) < 0;
else if (strcmp(ap[1], "-eq") == 0)
expr = simple_strtol(ap[0], NULL, 10) == simple_strtol(ap[2], NULL, 10);
else if (strcmp(ap[1], "-ne") == 0)
expr = simple_strtol(ap[0], NULL, 10) != simple_strtol(ap[2], NULL, 10);
else if (strcmp(ap[1], "-lt") == 0)
expr = simple_strtol(ap[0], NULL, 10) < simple_strtol(ap[2], NULL, 10);
else if (strcmp(ap[1], "-le") == 0)
expr = simple_strtol(ap[0], NULL, 10) <= simple_strtol(ap[2], NULL, 10);
else if (strcmp(ap[1], "-gt") == 0)
expr = simple_strtol(ap[0], NULL, 10) > simple_strtol(ap[2], NULL, 10);
else if (strcmp(ap[1], "-ge") == 0)
expr = simple_strtol(ap[0], NULL, 10) >= simple_strtol(ap[2], NULL, 10);
else {
expr = 1;
break;
}
if (last_cmp == 0)
expr = last_expr || expr;
else if (last_cmp == 1)
expr = last_expr && expr;
last_cmp = -1;
}
ap += adv; left -= adv;
}
if (neg)
expr = !expr;
expr = !expr;
debug (": returns %d\n", expr);
return expr;
}
U_BOOT_CMD(
test, CFG_MAXARGS, 1, do_test,
"test - minimal test like /bin/sh\n",
"[args..]\n"
" - test functionality\n"
);
int
do_exit (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int r;
r = 0;
if (argc > 1)
r = simple_strtoul(argv[1], NULL, 10);
return -r - 2;
}
U_BOOT_CMD(
exit, 2, 1, do_exit,
"exit - exit script\n",
" - exit functionality\n"
);
#endif
/*
* Use puts() instead of printf() to avoid printf buffer overflow
* for long help messages
*/
int do_help (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int i;
int rcode = 0;
if (argc == 1) { /*show list of commands */
int cmd_items = &__u_boot_cmd_end -
&__u_boot_cmd_start; /* pointer arith! */
cmd_tbl_t *cmd_array[cmd_items];
int i, j, swaps;
/* Make array of commands from .uboot_cmd section */
cmdtp = &__u_boot_cmd_start;
for (i = 0; i < cmd_items; i++) {
cmd_array[i] = cmdtp++;
}
/* Sort command list (trivial bubble sort) */
for (i = cmd_items - 1; i > 0; --i) {
swaps = 0;
for (j = 0; j < i; ++j) {
if (strcmp (cmd_array[j]->name,
cmd_array[j + 1]->name) > 0) {
cmd_tbl_t *tmp;
tmp = cmd_array[j];
cmd_array[j] = cmd_array[j + 1];
cmd_array[j + 1] = tmp;
++swaps;
}
}
if (!swaps)
break;
}
/* print short help (usage) */
for (i = 0; i < cmd_items; i++) {
const char *usage = cmd_array[i]->usage;
/* allow user abort */
if (ctrlc ())
return 1;
if (usage == NULL)
continue;
puts (usage);
}
return 0;
}
/*
* command help (long version)
*/
for (i = 1; i < argc; ++i) {
if ((cmdtp = find_cmd (argv[i])) != NULL) {
#ifdef CFG_LONGHELP
/* found - print (long) help info */
puts (cmdtp->name);
putc (' ');
if (cmdtp->help) {
puts (cmdtp->help);
} else {
puts ("- No help available.\n");
rcode = 1;
}
putc ('\n');
#else /* no long help available */
if (cmdtp->usage)
puts (cmdtp->usage);
#endif /* CFG_LONGHELP */
} else {
printf ("Unknown command '%s' - try 'help'"
" without arguments for list of all"
" known commands\n\n", argv[i]
);
rcode = 1;
}
}
return rcode;
}
U_BOOT_CMD(
help, CFG_MAXARGS, 1, do_help,
"help - print online help\n",
"[command ...]\n"
" - show help information (for 'command')\n"
"'help' prints online help for the monitor commands.\n\n"
"Without arguments, it prints a short usage message for all commands.\n\n"
"To get detailed help information for specific commands you can type\n"
"'help' with one or more command names as arguments.\n"
);
/* This do not ust the U_BOOT_CMD macro as ? can't be used in symbol names */
#ifdef CFG_LONGHELP
cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = {
"?", CFG_MAXARGS, 1, do_help,
"? - alias for 'help'\n",
NULL
};
#else
cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = {
"?", CFG_MAXARGS, 1, do_help,
"? - alias for 'help'\n"
};
#endif /* CFG_LONGHELP */
/***************************************************************************
* find command table entry for a command
*/
cmd_tbl_t *find_cmd (const char *cmd)
{
cmd_tbl_t *cmdtp;
cmd_tbl_t *cmdtp_temp = &__u_boot_cmd_start; /*Init value */
const char *p;
int len;
int n_found = 0;
/*
* Some commands allow length modifiers (like "cp.b");
* compare command name only until first dot.
*/
len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd);
for (cmdtp = &__u_boot_cmd_start;
cmdtp != &__u_boot_cmd_end;
cmdtp++) {
if (strncmp (cmd, cmdtp->name, len) == 0) {
if (len == strlen (cmdtp->name))
return cmdtp; /* full match */
cmdtp_temp = cmdtp; /* abbreviated command ? */
n_found++;
}
}
if (n_found == 1) { /* exactly one match */
return cmdtp_temp;
}
return NULL; /* not found or ambiguous command */
}
#ifdef CONFIG_AUTO_COMPLETE
int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[])
{
static char tmp_buf[512];
int space;
space = last_char == '\0' || last_char == ' ' || last_char == '\t';
if (space && argc == 1)
return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf);
if (!space && argc == 2)
return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf);
return 0;
}
static void install_auto_complete_handler(const char *cmd,
int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]))
{
cmd_tbl_t *cmdtp;
cmdtp = find_cmd(cmd);
if (cmdtp == NULL)
return;
cmdtp->complete = complete;
}
void install_auto_complete(void)
{
install_auto_complete_handler("printenv", var_complete);
install_auto_complete_handler("setenv", var_complete);
#if defined(CONFIG_CMD_RUN)
install_auto_complete_handler("run", var_complete);
#endif
}
/*************************************************************************************/
static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[])
{
cmd_tbl_t *cmdtp;
const char *p;
int len, clen;
int n_found = 0;
const char *cmd;
/* sanity? */
if (maxv < 2)
return -2;
cmdv[0] = NULL;
if (argc == 0) {
/* output full list of commands */
for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
if (n_found >= maxv - 2) {
cmdv[n_found++] = "...";
break;
}
cmdv[n_found++] = cmdtp->name;
}
cmdv[n_found] = NULL;
return n_found;
}
/* more than one arg or one but the start of the next */
if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) {
cmdtp = find_cmd(argv[0]);
if (cmdtp == NULL || cmdtp->complete == NULL) {
cmdv[0] = NULL;
return 0;
}
return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv);
}
cmd = argv[0];
/*
* Some commands allow length modifiers (like "cp.b");
* compare command name only until first dot.
*/
p = strchr(cmd, '.');
if (p == NULL)
len = strlen(cmd);
else
len = p - cmd;
/* return the partial matches */
for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
clen = strlen(cmdtp->name);
if (clen < len)
continue;
if (memcmp(cmd, cmdtp->name, len) != 0)
continue;
/* too many! */
if (n_found >= maxv - 2) {
cmdv[n_found++] = "...";
break;
}
cmdv[n_found++] = cmdtp->name;
}
cmdv[n_found] = NULL;
return n_found;
}
static int make_argv(char *s, int argvsz, char *argv[])
{
int argc = 0;
/* split into argv */
while (argc < argvsz - 1) {
/* skip any white space */
while ((*s == ' ') || (*s == '\t'))
++s;
if (*s == '\0') /* end of s, no more args */
break;
argv[argc++] = s; /* begin of argument string */
/* find end of string */
while (*s && (*s != ' ') && (*s != '\t'))
++s;
if (*s == '\0') /* end of s, no more args */
break;
*s++ = '\0'; /* terminate current arg */
}
argv[argc] = NULL;
return argc;
}
static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[])
{
int ll = leader != NULL ? strlen(leader) : 0;
int sl = sep != NULL ? strlen(sep) : 0;
int len, i;
if (banner) {
puts("\n");
puts(banner);
}
i = linemax; /* force leader and newline */
while (*argv != NULL) {
len = strlen(*argv) + sl;
if (i + len >= linemax) {
puts("\n");
if (leader)
puts(leader);
i = ll - sl;
} else if (sep)
puts(sep);
puts(*argv++);
i += len;
}
printf("\n");
}
static int find_common_prefix(char *argv[])
{
int i, len;
char *anchor, *s, *t;
if (*argv == NULL)
return 0;
/* begin with max */
anchor = *argv++;
len = strlen(anchor);
while ((t = *argv++) != NULL) {
s = anchor;
for (i = 0; i < len; i++, t++, s++) {
if (*t != *s)
break;
}
len = s - anchor;
}
return len;
}
static char tmp_buf[CFG_CBSIZE]; /* copy of console I/O buffer */
int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp)
{
int n = *np, col = *colp;
char *argv[CFG_MAXARGS + 1]; /* NULL terminated */
char *cmdv[20];
char *s, *t;
const char *sep;
int i, j, k, len, seplen, argc;
int cnt;
char last_char;
if (strcmp(prompt, CFG_PROMPT) != 0)
return 0; /* not in normal console */
cnt = strlen(buf);
if (cnt >= 1)
last_char = buf[cnt - 1];
else
last_char = '\0';
/* copy to secondary buffer which will be affected */
strcpy(tmp_buf, buf);
/* separate into argv */
argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv);
/* do the completion and return the possible completions */
i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv);
/* no match; bell and out */
if (i == 0) {
if (argc > 1) /* allow tab for non command */
return 0;
putc('\a');
return 1;
}
s = NULL;
len = 0;
sep = NULL;
seplen = 0;
if (i == 1) { /* one match; perfect */
k = strlen(argv[argc - 1]);
s = cmdv[0] + k;
len = strlen(s);
sep = " ";
seplen = 1;
} else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */
k = strlen(argv[argc - 1]);
j -= k;
if (j > 0) {
s = cmdv[0] + k;
len = j;
}
}
if (s != NULL) {
k = len + seplen;
/* make sure it fits */
if (n + k >= CFG_CBSIZE - 2) {
putc('\a');
return 1;
}
t = buf + cnt;
for (i = 0; i < len; i++)
*t++ = *s++;
if (sep != NULL)
for (i = 0; i < seplen; i++)
*t++ = sep[i];
*t = '\0';
n += k;
col += k;
puts(t - k);
if (sep == NULL)
putc('\a');
*np = n;
*colp = col;
} else {
print_argv(NULL, " ", " ", 78, cmdv);
puts(prompt);
puts(buf);
}
return 1;
}
#endif
comand.h文件
/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Definitions for Command Processor
*/
#ifndef __COMMAND_H
#define __COMMAND_H
#include <config.h>
#ifndef NULL
#define NULL 0
#endif
#ifndef __ASSEMBLY__
/*
* Monitor Command Table
*/
struct cmd_tbl_s {
char *name; /* Command Name */
int maxargs; /* maximum number of arguments */
int repeatable; /* autorepeat allowed? */
/* Implementation function */
int (*cmd)(struct cmd_tbl_s *, int, int, char *[]);
char *usage; /* Usage message (short) */
#ifdef CFG_LONGHELP
char *help; /* Help message (long) */
#endif
#ifdef CONFIG_AUTO_COMPLETE
/* do auto completion on the arguments */
int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]);
#endif
};
typedef struct cmd_tbl_s cmd_tbl_t;
extern cmd_tbl_t __u_boot_cmd_start;
extern cmd_tbl_t __u_boot_cmd_end;
/* common/command.c */
cmd_tbl_t *find_cmd(const char *cmd);
#ifdef CONFIG_AUTO_COMPLETE
extern void install_auto_complete(void);
extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp);
#endif
/*
* Monitor Command
*
* All commands use a common argument format:
*
* void function (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
*/
typedef void command_t (cmd_tbl_t *, int, int, char *[]);
#endif /* __ASSEMBLY__ */
/*
* Command Flags:
*/
#define CMD_FLAG_REPEAT 0x0001 /* repeat last command */
#define CMD_FLAG_BOOTD 0x0002 /* command is from bootd */
#define Struct_Section __attribute__ ((unused,section (".u_boot_cmd")))
#ifdef CFG_LONGHELP
#define U_BOOT_CMD(name,maxargs,rep,cmd,usage,help) \
cmd_tbl_t __u_boot_cmd_##name Struct_Section = {#name, maxargs, rep, cmd, usage, help}
#else /* no long help info */
#define U_BOOT_CMD(name,maxargs,rep,cmd,usage,help) \
cmd_tbl_t __u_boot_cmd_##name Struct_Section = {#name, maxargs, rep, cmd, usage}
#endif /* CFG_LONGHELP */
#endif /* __COMMAND_H */
