mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
b428f6a8c6
Signed-off-by: Dmitry Rakhchev <rda@emcraft.com> Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
1421 lines
30 KiB
C
1421 lines
30 KiB
C
/*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Add to readline cmdline-editing by
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* (C) Copyright 2005
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* JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* #define DEBUG */
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#ifdef CONFIG_MODEM_SUPPORT
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#include <malloc.h> /* for free() prototype */
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#endif
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#ifdef CFG_HUSH_PARSER
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#include <hush.h>
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#endif
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#include <post.h>
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#if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST)
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DECLARE_GLOBAL_DATA_PTR;
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#endif
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/*
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* Board-specific Platform code can reimplement show_boot_progress () if needed
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*/
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void inline __show_boot_progress (int val) {}
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void inline show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress")));
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#if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); /* for do_reset() prototype */
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#endif
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extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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#define MAX_DELAY_STOP_STR 32
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#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
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static int abortboot(int);
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#endif
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#undef DEBUG_PARSER
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char console_buffer[CFG_CBSIZE]; /* console I/O buffer */
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#ifndef CONFIG_CMDLINE_EDITING
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static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
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static char erase_seq[] = "\b \b"; /* erase sequence */
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static char tab_seq[] = " "; /* used to expand TABs */
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#endif /* CONFIG_CMDLINE_EDITING */
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#ifdef CONFIG_BOOT_RETRY_TIME
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static uint64_t endtime = 0; /* must be set, default is instant timeout */
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static int retry_time = -1; /* -1 so can call readline before main_loop */
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#endif
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#define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
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#ifndef CONFIG_BOOT_RETRY_MIN
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#define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
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#endif
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#ifdef CONFIG_MODEM_SUPPORT
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int do_mdm_init = 0;
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extern void mdm_init(void); /* defined in board.c */
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#endif
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/***************************************************************************
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* Watch for 'delay' seconds for autoboot stop or autoboot delay string.
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* returns: 0 - no key string, allow autoboot
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* 1 - got key string, abort
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*/
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#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
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# if defined(CONFIG_AUTOBOOT_KEYED)
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static __inline__ int abortboot(int bootdelay)
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{
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int abort = 0;
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uint64_t etime = endtick(bootdelay);
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struct {
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char* str;
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u_int len;
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int retry;
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}
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delaykey [] = {
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{ str: getenv ("bootdelaykey"), retry: 1 },
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{ str: getenv ("bootdelaykey2"), retry: 1 },
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{ str: getenv ("bootstopkey"), retry: 0 },
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{ str: getenv ("bootstopkey2"), retry: 0 },
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};
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char presskey [MAX_DELAY_STOP_STR];
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u_int presskey_len = 0;
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u_int presskey_max = 0;
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u_int i;
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# ifdef CONFIG_AUTOBOOT_PROMPT
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printf(CONFIG_AUTOBOOT_PROMPT, bootdelay);
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# endif
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# ifdef CONFIG_AUTOBOOT_DELAY_STR
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if (delaykey[0].str == NULL)
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delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
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# endif
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# ifdef CONFIG_AUTOBOOT_DELAY_STR2
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if (delaykey[1].str == NULL)
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delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
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# endif
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# ifdef CONFIG_AUTOBOOT_STOP_STR
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if (delaykey[2].str == NULL)
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delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
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# endif
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# ifdef CONFIG_AUTOBOOT_STOP_STR2
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if (delaykey[3].str == NULL)
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delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
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# endif
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for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
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delaykey[i].len = delaykey[i].str == NULL ?
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0 : strlen (delaykey[i].str);
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delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
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MAX_DELAY_STOP_STR : delaykey[i].len;
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presskey_max = presskey_max > delaykey[i].len ?
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presskey_max : delaykey[i].len;
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# if DEBUG_BOOTKEYS
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printf("%s key:<%s>\n",
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delaykey[i].retry ? "delay" : "stop",
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delaykey[i].str ? delaykey[i].str : "NULL");
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# endif
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}
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/* In order to keep up with incoming data, check timeout only
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* when catch up.
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*/
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while (!abort && get_ticks() <= etime) {
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for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
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if (delaykey[i].len > 0 &&
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presskey_len >= delaykey[i].len &&
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memcmp (presskey + presskey_len - delaykey[i].len,
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delaykey[i].str,
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delaykey[i].len) == 0) {
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# if DEBUG_BOOTKEYS
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printf("got %skey\n",
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delaykey[i].retry ? "delay" : "stop");
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# endif
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# ifdef CONFIG_BOOT_RETRY_TIME
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/* don't retry auto boot */
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if (! delaykey[i].retry)
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retry_time = -1;
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# endif
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abort = 1;
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}
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}
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if (tstc()) {
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if (presskey_len < presskey_max) {
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presskey [presskey_len ++] = getc();
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}
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else {
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for (i = 0; i < presskey_max - 1; i ++)
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presskey [i] = presskey [i + 1];
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presskey [i] = getc();
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}
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}
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}
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# if DEBUG_BOOTKEYS
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if (!abort)
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puts("key timeout\n");
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# endif
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#ifdef CONFIG_SILENT_CONSOLE
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if (abort)
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gd->flags &= ~GD_FLG_SILENT;
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#endif
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return abort;
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}
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# else /* !defined(CONFIG_AUTOBOOT_KEYED) */
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#ifdef CONFIG_MENUKEY
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static int menukey = 0;
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#endif
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static __inline__ int abortboot(int bootdelay)
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{
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int abort = 0;
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#ifdef CONFIG_MENUPROMPT
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printf(CONFIG_MENUPROMPT, bootdelay);
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#else
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printf("Hit any key to stop autoboot: %2d ", bootdelay);
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#endif
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#if defined CONFIG_ZERO_BOOTDELAY_CHECK
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/*
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* Check if key already pressed
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* Don't check if bootdelay < 0
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*/
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if (bootdelay >= 0) {
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if (tstc()) { /* we got a key press */
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(void) getc(); /* consume input */
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puts ("\b\b\b 0");
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abort = 1; /* don't auto boot */
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}
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}
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#endif
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while ((bootdelay > 0) && (!abort)) {
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int i;
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--bootdelay;
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/* delay 100 * 10ms */
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for (i=0; !abort && i<100; ++i) {
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if (tstc()) { /* we got a key press */
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abort = 1; /* don't auto boot */
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bootdelay = 0; /* no more delay */
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# ifdef CONFIG_MENUKEY
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menukey = getc();
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# else
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(void) getc(); /* consume input */
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# endif
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break;
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}
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udelay(10000);
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}
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printf("\b\b\b%2d ", bootdelay);
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}
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putc('\n');
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#ifdef CONFIG_SILENT_CONSOLE
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if (abort)
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gd->flags &= ~GD_FLG_SILENT;
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#endif
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return abort;
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}
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# endif /* CONFIG_AUTOBOOT_KEYED */
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#endif /* CONFIG_BOOTDELAY >= 0 */
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/****************************************************************************/
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void main_loop (void)
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{
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#ifndef CFG_HUSH_PARSER
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static char lastcommand[CFG_CBSIZE] = { 0, };
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int len;
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int rc = 1;
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int flag;
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#endif
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#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
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char *s;
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int bootdelay;
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#endif
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#ifdef CONFIG_PREBOOT
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char *p;
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#endif
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#ifdef CONFIG_BOOTCOUNT_LIMIT
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unsigned long bootcount = 0;
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unsigned long bootlimit = 0;
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char *bcs;
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char bcs_set[16];
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#endif /* CONFIG_BOOTCOUNT_LIMIT */
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#if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
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ulong bmp = 0; /* default bitmap */
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extern int trab_vfd (ulong bitmap);
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#ifdef CONFIG_MODEM_SUPPORT
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if (do_mdm_init)
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bmp = 1; /* alternate bitmap */
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#endif
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trab_vfd (bmp);
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#endif /* CONFIG_VFD && VFD_TEST_LOGO */
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#ifdef CONFIG_BOOTCOUNT_LIMIT
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bootcount = bootcount_load();
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bootcount++;
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bootcount_store (bootcount);
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sprintf (bcs_set, "%lu", bootcount);
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setenv ("bootcount", bcs_set);
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bcs = getenv ("bootlimit");
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bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0;
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#endif /* CONFIG_BOOTCOUNT_LIMIT */
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#ifdef CONFIG_MODEM_SUPPORT
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debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init);
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if (do_mdm_init) {
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char *str = strdup(getenv("mdm_cmd"));
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setenv ("preboot", str); /* set or delete definition */
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if (str != NULL)
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free (str);
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mdm_init(); /* wait for modem connection */
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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#ifdef CONFIG_VERSION_VARIABLE
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{
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extern char version_string[];
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setenv ("ver", version_string); /* set version variable */
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}
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#endif /* CONFIG_VERSION_VARIABLE */
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#ifdef CFG_HUSH_PARSER
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u_boot_hush_start ();
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#endif
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#ifdef CONFIG_AUTO_COMPLETE
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install_auto_complete();
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#endif
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#ifdef CONFIG_PREBOOT
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if ((p = getenv ("preboot")) != NULL) {
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# ifdef CONFIG_AUTOBOOT_KEYED
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int prev = disable_ctrlc(1); /* disable Control C checking */
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# endif
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# ifndef CFG_HUSH_PARSER
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run_command (p, 0);
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# else
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parse_string_outer(p, FLAG_PARSE_SEMICOLON |
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FLAG_EXIT_FROM_LOOP);
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# endif
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# ifdef CONFIG_AUTOBOOT_KEYED
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disable_ctrlc(prev); /* restore Control C checking */
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# endif
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}
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#endif /* CONFIG_PREBOOT */
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#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
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s = getenv ("bootdelay");
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bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
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debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
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# ifdef CONFIG_BOOT_RETRY_TIME
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init_cmd_timeout ();
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# endif /* CONFIG_BOOT_RETRY_TIME */
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#ifdef CONFIG_POST
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if (gd->flags & GD_FLG_POSTFAIL) {
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s = getenv("failbootcmd");
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}
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else
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#endif /* CONFIG_POST */
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#ifdef CONFIG_BOOTCOUNT_LIMIT
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if (bootlimit && (bootcount > bootlimit)) {
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printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
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(unsigned)bootlimit);
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s = getenv ("altbootcmd");
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}
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else
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#endif /* CONFIG_BOOTCOUNT_LIMIT */
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s = getenv ("bootcmd");
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debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
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if (bootdelay >= 0 && s && !abortboot (bootdelay)) {
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# ifdef CONFIG_AUTOBOOT_KEYED
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int prev = disable_ctrlc(1); /* disable Control C checking */
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# endif
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# ifndef CFG_HUSH_PARSER
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run_command (s, 0);
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# else
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parse_string_outer(s, FLAG_PARSE_SEMICOLON |
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FLAG_EXIT_FROM_LOOP);
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# endif
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# ifdef CONFIG_AUTOBOOT_KEYED
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disable_ctrlc(prev); /* restore Control C checking */
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# endif
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}
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# ifdef CONFIG_MENUKEY
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if (menukey == CONFIG_MENUKEY) {
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s = getenv("menucmd");
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if (s) {
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# ifndef CFG_HUSH_PARSER
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run_command (s, 0);
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# else
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parse_string_outer(s, FLAG_PARSE_SEMICOLON |
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FLAG_EXIT_FROM_LOOP);
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# endif
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}
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}
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#endif /* CONFIG_MENUKEY */
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#endif /* CONFIG_BOOTDELAY */
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#ifdef CONFIG_AMIGAONEG3SE
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{
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extern void video_banner(void);
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video_banner();
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}
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#endif
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/*
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* Main Loop for Monitor Command Processing
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*/
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#ifdef CFG_HUSH_PARSER
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parse_file_outer();
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/* This point is never reached */
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for (;;);
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#else
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for (;;) {
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#ifdef CONFIG_BOOT_RETRY_TIME
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if (rc >= 0) {
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/* Saw enough of a valid command to
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* restart the timeout.
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*/
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reset_cmd_timeout();
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}
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#endif
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len = readline (CFG_PROMPT);
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flag = 0; /* assume no special flags for now */
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if (len > 0)
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strcpy (lastcommand, console_buffer);
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else if (len == 0)
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flag |= CMD_FLAG_REPEAT;
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#ifdef CONFIG_BOOT_RETRY_TIME
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else if (len == -2) {
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/* -2 means timed out, retry autoboot
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*/
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puts ("\nTimed out waiting for command\n");
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# ifdef CONFIG_RESET_TO_RETRY
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/* Reinit board to run initialization code again */
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do_reset (NULL, 0, 0, NULL);
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# else
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return; /* retry autoboot */
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# endif
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}
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#endif
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if (len == -1)
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puts ("<INTERRUPT>\n");
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else
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rc = run_command (lastcommand, flag);
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if (rc <= 0) {
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/* invalid command or not repeatable, forget it */
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lastcommand[0] = 0;
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}
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}
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#endif /*CFG_HUSH_PARSER*/
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}
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#ifdef CONFIG_BOOT_RETRY_TIME
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/***************************************************************************
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* initialize command line timeout
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*/
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void init_cmd_timeout(void)
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{
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char *s = getenv ("bootretry");
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if (s != NULL)
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retry_time = (int)simple_strtol(s, NULL, 10);
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else
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retry_time = CONFIG_BOOT_RETRY_TIME;
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if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
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retry_time = CONFIG_BOOT_RETRY_MIN;
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}
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/***************************************************************************
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* reset command line timeout to retry_time seconds
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*/
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void reset_cmd_timeout(void)
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{
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endtime = endtick(retry_time);
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}
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#endif
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#ifdef CONFIG_CMDLINE_EDITING
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/*
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* cmdline-editing related codes from vivi.
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|
* Author: Janghoon Lyu <nandy@mizi.com>
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|
*/
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|
|
|
#define putnstr(str,n) do { \
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printf ("%.*s", n, str); \
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} while (0)
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#define CTL_CH(c) ((c) - 'a' + 1)
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|
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#define MAX_CMDBUF_SIZE 256
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#define CTL_BACKSPACE ('\b')
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#define DEL ((char)255)
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#define DEL7 ((char)127)
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#define CREAD_HIST_CHAR ('!')
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#define getcmd_putch(ch) putc(ch)
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#define getcmd_getch() getc()
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#define getcmd_cbeep() getcmd_putch('\a')
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#define HIST_MAX 20
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#define HIST_SIZE MAX_CMDBUF_SIZE
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|
|
static int hist_max = 0;
|
|
static int hist_add_idx = 0;
|
|
static int hist_cur = -1;
|
|
unsigned hist_num = 0;
|
|
|
|
char* hist_list[HIST_MAX];
|
|
char hist_lines[HIST_MAX][HIST_SIZE];
|
|
|
|
#define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
|
|
|
|
static void hist_init(void)
|
|
{
|
|
int i;
|
|
|
|
hist_max = 0;
|
|
hist_add_idx = 0;
|
|
hist_cur = -1;
|
|
hist_num = 0;
|
|
|
|
for (i = 0; i < HIST_MAX; i++) {
|
|
hist_list[i] = hist_lines[i];
|
|
hist_list[i][0] = '\0';
|
|
}
|
|
}
|
|
|
|
static void cread_add_to_hist(char *line)
|
|
{
|
|
strcpy(hist_list[hist_add_idx], line);
|
|
|
|
if (++hist_add_idx >= HIST_MAX)
|
|
hist_add_idx = 0;
|
|
|
|
if (hist_add_idx > hist_max)
|
|
hist_max = hist_add_idx;
|
|
|
|
hist_num++;
|
|
}
|
|
|
|
static char* hist_prev(void)
|
|
{
|
|
char *ret;
|
|
int old_cur;
|
|
|
|
if (hist_cur < 0)
|
|
return NULL;
|
|
|
|
old_cur = hist_cur;
|
|
if (--hist_cur < 0)
|
|
hist_cur = hist_max;
|
|
|
|
if (hist_cur == hist_add_idx) {
|
|
hist_cur = old_cur;
|
|
ret = NULL;
|
|
} else
|
|
ret = hist_list[hist_cur];
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static char* hist_next(void)
|
|
{
|
|
char *ret;
|
|
|
|
if (hist_cur < 0)
|
|
return NULL;
|
|
|
|
if (hist_cur == hist_add_idx)
|
|
return NULL;
|
|
|
|
if (++hist_cur > hist_max)
|
|
hist_cur = 0;
|
|
|
|
if (hist_cur == hist_add_idx) {
|
|
ret = "";
|
|
} else
|
|
ret = hist_list[hist_cur];
|
|
|
|
return (ret);
|
|
}
|
|
|
|
#ifndef CONFIG_CMDLINE_EDITING
|
|
static void cread_print_hist_list(void)
|
|
{
|
|
int i;
|
|
unsigned long n;
|
|
|
|
n = hist_num - hist_max;
|
|
|
|
i = hist_add_idx + 1;
|
|
while (1) {
|
|
if (i > hist_max)
|
|
i = 0;
|
|
if (i == hist_add_idx)
|
|
break;
|
|
printf("%s\n", hist_list[i]);
|
|
n++;
|
|
i++;
|
|
}
|
|
}
|
|
#endif /* CONFIG_CMDLINE_EDITING */
|
|
|
|
#define BEGINNING_OF_LINE() { \
|
|
while (num) { \
|
|
getcmd_putch(CTL_BACKSPACE); \
|
|
num--; \
|
|
} \
|
|
}
|
|
|
|
#define ERASE_TO_EOL() { \
|
|
if (num < eol_num) { \
|
|
int tmp; \
|
|
for (tmp = num; tmp < eol_num; tmp++) \
|
|
getcmd_putch(' '); \
|
|
while (tmp-- > num) \
|
|
getcmd_putch(CTL_BACKSPACE); \
|
|
eol_num = num; \
|
|
} \
|
|
}
|
|
|
|
#define REFRESH_TO_EOL() { \
|
|
if (num < eol_num) { \
|
|
wlen = eol_num - num; \
|
|
putnstr(buf + num, wlen); \
|
|
num = eol_num; \
|
|
} \
|
|
}
|
|
|
|
static void cread_add_char(char ichar, int insert, unsigned long *num,
|
|
unsigned long *eol_num, char *buf, unsigned long len)
|
|
{
|
|
unsigned long wlen;
|
|
|
|
/* room ??? */
|
|
if (insert || *num == *eol_num) {
|
|
if (*eol_num > len - 1) {
|
|
getcmd_cbeep();
|
|
return;
|
|
}
|
|
(*eol_num)++;
|
|
}
|
|
|
|
if (insert) {
|
|
wlen = *eol_num - *num;
|
|
if (wlen > 1) {
|
|
memmove(&buf[*num+1], &buf[*num], wlen-1);
|
|
}
|
|
|
|
buf[*num] = ichar;
|
|
putnstr(buf + *num, wlen);
|
|
(*num)++;
|
|
while (--wlen) {
|
|
getcmd_putch(CTL_BACKSPACE);
|
|
}
|
|
} else {
|
|
/* echo the character */
|
|
wlen = 1;
|
|
buf[*num] = ichar;
|
|
putnstr(buf + *num, wlen);
|
|
(*num)++;
|
|
}
|
|
}
|
|
|
|
static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
|
|
unsigned long *eol_num, char *buf, unsigned long len)
|
|
{
|
|
while (strsize--) {
|
|
cread_add_char(*str, insert, num, eol_num, buf, len);
|
|
str++;
|
|
}
|
|
}
|
|
|
|
static int cread_line(const char *const prompt, char *buf, unsigned int *len)
|
|
{
|
|
unsigned long num = 0;
|
|
unsigned long eol_num = 0;
|
|
unsigned long rlen;
|
|
unsigned long wlen;
|
|
char ichar;
|
|
int insert = 1;
|
|
int esc_len = 0;
|
|
int rc = 0;
|
|
char esc_save[8];
|
|
|
|
while (1) {
|
|
rlen = 1;
|
|
#ifdef CONFIG_BOOT_RETRY_TIME
|
|
while (!tstc()) { /* while no incoming data */
|
|
if (retry_time >= 0 && get_ticks() > endtime)
|
|
return (-2); /* timed out */
|
|
}
|
|
#endif
|
|
|
|
ichar = getcmd_getch();
|
|
|
|
if ((ichar == '\n') || (ichar == '\r')) {
|
|
putc('\n');
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* handle standard linux xterm esc sequences for arrow key, etc.
|
|
*/
|
|
if (esc_len != 0) {
|
|
if (esc_len == 1) {
|
|
if (ichar == '[') {
|
|
esc_save[esc_len] = ichar;
|
|
esc_len = 2;
|
|
} else {
|
|
cread_add_str(esc_save, esc_len, insert,
|
|
&num, &eol_num, buf, *len);
|
|
esc_len = 0;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
switch (ichar) {
|
|
|
|
case 'D': /* <- key */
|
|
ichar = CTL_CH('b');
|
|
esc_len = 0;
|
|
break;
|
|
case 'C': /* -> key */
|
|
ichar = CTL_CH('f');
|
|
esc_len = 0;
|
|
break; /* pass off to ^F handler */
|
|
case 'H': /* Home key */
|
|
ichar = CTL_CH('a');
|
|
esc_len = 0;
|
|
break; /* pass off to ^A handler */
|
|
case 'A': /* up arrow */
|
|
ichar = CTL_CH('p');
|
|
esc_len = 0;
|
|
break; /* pass off to ^P handler */
|
|
case 'B': /* down arrow */
|
|
ichar = CTL_CH('n');
|
|
esc_len = 0;
|
|
break; /* pass off to ^N handler */
|
|
default:
|
|
esc_save[esc_len++] = ichar;
|
|
cread_add_str(esc_save, esc_len, insert,
|
|
&num, &eol_num, buf, *len);
|
|
esc_len = 0;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
switch (ichar) {
|
|
case 0x1b:
|
|
if (esc_len == 0) {
|
|
esc_save[esc_len] = ichar;
|
|
esc_len = 1;
|
|
} else {
|
|
puts("impossible condition #876\n");
|
|
esc_len = 0;
|
|
}
|
|
break;
|
|
|
|
case CTL_CH('a'):
|
|
BEGINNING_OF_LINE();
|
|
break;
|
|
case CTL_CH('c'): /* ^C - break */
|
|
*buf = '\0'; /* discard input */
|
|
return (-1);
|
|
case CTL_CH('f'):
|
|
if (num < eol_num) {
|
|
getcmd_putch(buf[num]);
|
|
num++;
|
|
}
|
|
break;
|
|
case CTL_CH('b'):
|
|
if (num) {
|
|
getcmd_putch(CTL_BACKSPACE);
|
|
num--;
|
|
}
|
|
break;
|
|
case CTL_CH('d'):
|
|
if (num < eol_num) {
|
|
wlen = eol_num - num - 1;
|
|
if (wlen) {
|
|
memmove(&buf[num], &buf[num+1], wlen);
|
|
putnstr(buf + num, wlen);
|
|
}
|
|
|
|
getcmd_putch(' ');
|
|
do {
|
|
getcmd_putch(CTL_BACKSPACE);
|
|
} while (wlen--);
|
|
eol_num--;
|
|
}
|
|
break;
|
|
case CTL_CH('k'):
|
|
ERASE_TO_EOL();
|
|
break;
|
|
case CTL_CH('e'):
|
|
REFRESH_TO_EOL();
|
|
break;
|
|
case CTL_CH('o'):
|
|
insert = !insert;
|
|
break;
|
|
case CTL_CH('x'):
|
|
case CTL_CH('u'):
|
|
BEGINNING_OF_LINE();
|
|
ERASE_TO_EOL();
|
|
break;
|
|
case DEL:
|
|
case DEL7:
|
|
case 8:
|
|
if (num) {
|
|
wlen = eol_num - num;
|
|
num--;
|
|
memmove(&buf[num], &buf[num+1], wlen);
|
|
getcmd_putch(CTL_BACKSPACE);
|
|
putnstr(buf + num, wlen);
|
|
getcmd_putch(' ');
|
|
do {
|
|
getcmd_putch(CTL_BACKSPACE);
|
|
} while (wlen--);
|
|
eol_num--;
|
|
}
|
|
break;
|
|
case CTL_CH('p'):
|
|
case CTL_CH('n'):
|
|
{
|
|
char * hline;
|
|
|
|
esc_len = 0;
|
|
|
|
if (ichar == CTL_CH('p'))
|
|
hline = hist_prev();
|
|
else
|
|
hline = hist_next();
|
|
|
|
if (!hline) {
|
|
getcmd_cbeep();
|
|
continue;
|
|
}
|
|
|
|
/* nuke the current line */
|
|
/* first, go home */
|
|
BEGINNING_OF_LINE();
|
|
|
|
/* erase to end of line */
|
|
ERASE_TO_EOL();
|
|
|
|
/* copy new line into place and display */
|
|
strcpy(buf, hline);
|
|
eol_num = strlen(buf);
|
|
REFRESH_TO_EOL();
|
|
continue;
|
|
}
|
|
#ifdef CONFIG_AUTO_COMPLETE
|
|
case '\t': {
|
|
int num2, col;
|
|
|
|
/* do not autocomplete when in the middle */
|
|
if (num < eol_num) {
|
|
getcmd_cbeep();
|
|
break;
|
|
}
|
|
|
|
buf[num] = '\0';
|
|
col = strlen(prompt) + eol_num;
|
|
num2 = num;
|
|
if (cmd_auto_complete(prompt, buf, &num2, &col)) {
|
|
col = num2 - num;
|
|
num += col;
|
|
eol_num += col;
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
|
|
break;
|
|
}
|
|
}
|
|
*len = eol_num;
|
|
buf[eol_num] = '\0'; /* lose the newline */
|
|
|
|
if (buf[0] && buf[0] != CREAD_HIST_CHAR)
|
|
cread_add_to_hist(buf);
|
|
hist_cur = hist_add_idx;
|
|
|
|
return (rc);
|
|
}
|
|
|
|
#endif /* CONFIG_CMDLINE_EDITING */
|
|
|
|
/****************************************************************************/
|
|
|
|
/*
|
|
* Prompt for input and read a line.
|
|
* If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
|
|
* time out when time goes past endtime (timebase time in ticks).
|
|
* Return: number of read characters
|
|
* -1 if break
|
|
* -2 if timed out
|
|
*/
|
|
int readline (const char *const prompt)
|
|
{
|
|
return readline_into_buffer(prompt, console_buffer);
|
|
}
|
|
|
|
|
|
int readline_into_buffer (const char *const prompt, char * buffer)
|
|
{
|
|
char *p = buffer;
|
|
#ifdef CONFIG_CMDLINE_EDITING
|
|
unsigned int len=MAX_CMDBUF_SIZE;
|
|
int rc;
|
|
static int initted = 0;
|
|
|
|
if (!initted) {
|
|
hist_init();
|
|
initted = 1;
|
|
}
|
|
|
|
puts (prompt);
|
|
|
|
rc = cread_line(prompt, p, &len);
|
|
return rc < 0 ? rc : len;
|
|
#else
|
|
char * p_buf = p;
|
|
int n = 0; /* buffer index */
|
|
int plen = 0; /* prompt length */
|
|
int col; /* output column cnt */
|
|
char c;
|
|
|
|
/* print prompt */
|
|
if (prompt) {
|
|
plen = strlen (prompt);
|
|
puts (prompt);
|
|
}
|
|
col = plen;
|
|
|
|
for (;;) {
|
|
#ifdef CONFIG_BOOT_RETRY_TIME
|
|
while (!tstc()) { /* while no incoming data */
|
|
if (retry_time >= 0 && get_ticks() > endtime)
|
|
return (-2); /* timed out */
|
|
}
|
|
#endif
|
|
WATCHDOG_RESET(); /* Trigger watchdog, if needed */
|
|
|
|
#ifdef CONFIG_SHOW_ACTIVITY
|
|
while (!tstc()) {
|
|
extern void show_activity(int arg);
|
|
show_activity(0);
|
|
}
|
|
#endif
|
|
c = getc();
|
|
|
|
/*
|
|
* Special character handling
|
|
*/
|
|
switch (c) {
|
|
case '\r': /* Enter */
|
|
case '\n':
|
|
*p = '\0';
|
|
puts ("\r\n");
|
|
return (p - p_buf);
|
|
|
|
case '\0': /* nul */
|
|
continue;
|
|
|
|
case 0x03: /* ^C - break */
|
|
p_buf[0] = '\0'; /* discard input */
|
|
return (-1);
|
|
|
|
case 0x15: /* ^U - erase line */
|
|
while (col > plen) {
|
|
puts (erase_seq);
|
|
--col;
|
|
}
|
|
p = p_buf;
|
|
n = 0;
|
|
continue;
|
|
|
|
case 0x17: /* ^W - erase word */
|
|
p=delete_char(p_buf, p, &col, &n, plen);
|
|
while ((n > 0) && (*p != ' ')) {
|
|
p=delete_char(p_buf, p, &col, &n, plen);
|
|
}
|
|
continue;
|
|
|
|
case 0x08: /* ^H - backspace */
|
|
case 0x7F: /* DEL - backspace */
|
|
p=delete_char(p_buf, p, &col, &n, plen);
|
|
continue;
|
|
|
|
default:
|
|
/*
|
|
* Must be a normal character then
|
|
*/
|
|
if (n < CFG_CBSIZE-2) {
|
|
if (c == '\t') { /* expand TABs */
|
|
#ifdef CONFIG_AUTO_COMPLETE
|
|
/* if auto completion triggered just continue */
|
|
*p = '\0';
|
|
if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
|
|
p = p_buf + n; /* reset */
|
|
continue;
|
|
}
|
|
#endif
|
|
puts (tab_seq+(col&07));
|
|
col += 8 - (col&07);
|
|
} else {
|
|
++col; /* echo input */
|
|
putc (c);
|
|
}
|
|
*p++ = c;
|
|
++n;
|
|
} else { /* Buffer full */
|
|
putc ('\a');
|
|
}
|
|
}
|
|
}
|
|
#endif /* CONFIG_CMDLINE_EDITING */
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
#ifndef CONFIG_CMDLINE_EDITING
|
|
static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
|
|
{
|
|
char *s;
|
|
|
|
if (*np == 0) {
|
|
return (p);
|
|
}
|
|
|
|
if (*(--p) == '\t') { /* will retype the whole line */
|
|
while (*colp > plen) {
|
|
puts (erase_seq);
|
|
(*colp)--;
|
|
}
|
|
for (s=buffer; s<p; ++s) {
|
|
if (*s == '\t') {
|
|
puts (tab_seq+((*colp) & 07));
|
|
*colp += 8 - ((*colp) & 07);
|
|
} else {
|
|
++(*colp);
|
|
putc (*s);
|
|
}
|
|
}
|
|
} else {
|
|
puts (erase_seq);
|
|
(*colp)--;
|
|
}
|
|
(*np)--;
|
|
return (p);
|
|
}
|
|
#endif /* CONFIG_CMDLINE_EDITING */
|
|
|
|
/****************************************************************************/
|
|
|
|
int parse_line (char *line, char *argv[])
|
|
{
|
|
int nargs = 0;
|
|
|
|
#ifdef DEBUG_PARSER
|
|
printf ("parse_line: \"%s\"\n", line);
|
|
#endif
|
|
while (nargs < CFG_MAXARGS) {
|
|
|
|
/* skip any white space */
|
|
while ((*line == ' ') || (*line == '\t')) {
|
|
++line;
|
|
}
|
|
|
|
if (*line == '\0') { /* end of line, no more args */
|
|
argv[nargs] = NULL;
|
|
#ifdef DEBUG_PARSER
|
|
printf ("parse_line: nargs=%d\n", nargs);
|
|
#endif
|
|
return (nargs);
|
|
}
|
|
|
|
argv[nargs++] = line; /* begin of argument string */
|
|
|
|
/* find end of string */
|
|
while (*line && (*line != ' ') && (*line != '\t')) {
|
|
++line;
|
|
}
|
|
|
|
if (*line == '\0') { /* end of line, no more args */
|
|
argv[nargs] = NULL;
|
|
#ifdef DEBUG_PARSER
|
|
printf ("parse_line: nargs=%d\n", nargs);
|
|
#endif
|
|
return (nargs);
|
|
}
|
|
|
|
*line++ = '\0'; /* terminate current arg */
|
|
}
|
|
|
|
printf ("** Too many args (max. %d) **\n", CFG_MAXARGS);
|
|
|
|
#ifdef DEBUG_PARSER
|
|
printf ("parse_line: nargs=%d\n", nargs);
|
|
#endif
|
|
return (nargs);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
static void process_macros (const char *input, char *output)
|
|
{
|
|
char c, prev;
|
|
const char *varname_start = NULL;
|
|
int inputcnt = strlen (input);
|
|
int outputcnt = CFG_CBSIZE;
|
|
int state = 0; /* 0 = waiting for '$' */
|
|
|
|
/* 1 = waiting for '(' or '{' */
|
|
/* 2 = waiting for ')' or '}' */
|
|
/* 3 = waiting for ''' */
|
|
#ifdef DEBUG_PARSER
|
|
char *output_start = output;
|
|
|
|
printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
|
|
input);
|
|
#endif
|
|
|
|
prev = '\0'; /* previous character */
|
|
|
|
while (inputcnt && outputcnt) {
|
|
c = *input++;
|
|
inputcnt--;
|
|
|
|
if (state != 3) {
|
|
/* remove one level of escape characters */
|
|
if ((c == '\\') && (prev != '\\')) {
|
|
if (inputcnt-- == 0)
|
|
break;
|
|
prev = c;
|
|
c = *input++;
|
|
}
|
|
}
|
|
|
|
switch (state) {
|
|
case 0: /* Waiting for (unescaped) $ */
|
|
if ((c == '\'') && (prev != '\\')) {
|
|
state = 3;
|
|
break;
|
|
}
|
|
if ((c == '$') && (prev != '\\')) {
|
|
state++;
|
|
} else {
|
|
*(output++) = c;
|
|
outputcnt--;
|
|
}
|
|
break;
|
|
case 1: /* Waiting for ( */
|
|
if (c == '(' || c == '{') {
|
|
state++;
|
|
varname_start = input;
|
|
} else {
|
|
state = 0;
|
|
*(output++) = '$';
|
|
outputcnt--;
|
|
|
|
if (outputcnt) {
|
|
*(output++) = c;
|
|
outputcnt--;
|
|
}
|
|
}
|
|
break;
|
|
case 2: /* Waiting for ) */
|
|
if (c == ')' || c == '}') {
|
|
int i;
|
|
char envname[CFG_CBSIZE], *envval;
|
|
int envcnt = input - varname_start - 1; /* Varname # of chars */
|
|
|
|
/* Get the varname */
|
|
for (i = 0; i < envcnt; i++) {
|
|
envname[i] = varname_start[i];
|
|
}
|
|
envname[i] = 0;
|
|
|
|
/* Get its value */
|
|
envval = getenv (envname);
|
|
|
|
/* Copy into the line if it exists */
|
|
if (envval != NULL)
|
|
while ((*envval) && outputcnt) {
|
|
*(output++) = *(envval++);
|
|
outputcnt--;
|
|
}
|
|
/* Look for another '$' */
|
|
state = 0;
|
|
}
|
|
break;
|
|
case 3: /* Waiting for ' */
|
|
if ((c == '\'') && (prev != '\\')) {
|
|
state = 0;
|
|
} else {
|
|
*(output++) = c;
|
|
outputcnt--;
|
|
}
|
|
break;
|
|
}
|
|
prev = c;
|
|
}
|
|
|
|
if (outputcnt)
|
|
*output = 0;
|
|
else
|
|
*(output - 1) = 0;
|
|
|
|
#ifdef DEBUG_PARSER
|
|
printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
|
|
strlen (output_start), output_start);
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
* returns:
|
|
* 1 - command executed, repeatable
|
|
* 0 - command executed but not repeatable, interrupted commands are
|
|
* always considered not repeatable
|
|
* -1 - not executed (unrecognized, bootd recursion or too many args)
|
|
* (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is
|
|
* considered unrecognized)
|
|
*
|
|
* WARNING:
|
|
*
|
|
* We must create a temporary copy of the command since the command we get
|
|
* may be the result from getenv(), which returns a pointer directly to
|
|
* the environment data, which may change magicly when the command we run
|
|
* creates or modifies environment variables (like "bootp" does).
|
|
*/
|
|
|
|
int run_command (const char *cmd, int flag)
|
|
{
|
|
cmd_tbl_t *cmdtp;
|
|
char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */
|
|
char *token; /* start of token in cmdbuf */
|
|
char *sep; /* end of token (separator) in cmdbuf */
|
|
char finaltoken[CFG_CBSIZE];
|
|
char *str = cmdbuf;
|
|
char *argv[CFG_MAXARGS + 1]; /* NULL terminated */
|
|
int argc, inquotes;
|
|
int repeatable = 1;
|
|
int rc = 0;
|
|
|
|
#ifdef DEBUG_PARSER
|
|
printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
|
|
puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */
|
|
puts ("\"\n");
|
|
#endif
|
|
|
|
clear_ctrlc(); /* forget any previous Control C */
|
|
|
|
if (!cmd || !*cmd) {
|
|
return -1; /* empty command */
|
|
}
|
|
|
|
if (strlen(cmd) >= CFG_CBSIZE) {
|
|
puts ("## Command too long!\n");
|
|
return -1;
|
|
}
|
|
|
|
strcpy (cmdbuf, cmd);
|
|
|
|
/* Process separators and check for invalid
|
|
* repeatable commands
|
|
*/
|
|
|
|
#ifdef DEBUG_PARSER
|
|
printf ("[PROCESS_SEPARATORS] %s\n", cmd);
|
|
#endif
|
|
while (*str) {
|
|
|
|
/*
|
|
* Find separator, or string end
|
|
* Allow simple escape of ';' by writing "\;"
|
|
*/
|
|
for (inquotes = 0, sep = str; *sep; sep++) {
|
|
if ((*sep=='\'') &&
|
|
(*(sep-1) != '\\'))
|
|
inquotes=!inquotes;
|
|
|
|
if (!inquotes &&
|
|
(*sep == ';') && /* separator */
|
|
( sep != str) && /* past string start */
|
|
(*(sep-1) != '\\')) /* and NOT escaped */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Limit the token to data between separators
|
|
*/
|
|
token = str;
|
|
if (*sep) {
|
|
str = sep + 1; /* start of command for next pass */
|
|
*sep = '\0';
|
|
}
|
|
else
|
|
str = sep; /* no more commands for next pass */
|
|
#ifdef DEBUG_PARSER
|
|
printf ("token: \"%s\"\n", token);
|
|
#endif
|
|
|
|
/* find macros in this token and replace them */
|
|
process_macros (token, finaltoken);
|
|
|
|
/* Extract arguments */
|
|
if ((argc = parse_line (finaltoken, argv)) == 0) {
|
|
rc = -1; /* no command at all */
|
|
continue;
|
|
}
|
|
|
|
/* Look up command in command table */
|
|
if ((cmdtp = find_cmd(argv[0])) == NULL) {
|
|
printf ("Unknown command '%s' - try 'help'\n", argv[0]);
|
|
rc = -1; /* give up after bad command */
|
|
continue;
|
|
}
|
|
|
|
/* found - check max args */
|
|
if (argc > cmdtp->maxargs) {
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
|
rc = -1;
|
|
continue;
|
|
}
|
|
|
|
#if defined(CONFIG_CMD_BOOTD)
|
|
/* avoid "bootd" recursion */
|
|
if (cmdtp->cmd == do_bootd) {
|
|
#ifdef DEBUG_PARSER
|
|
printf ("[%s]\n", finaltoken);
|
|
#endif
|
|
if (flag & CMD_FLAG_BOOTD) {
|
|
puts ("'bootd' recursion detected\n");
|
|
rc = -1;
|
|
continue;
|
|
} else {
|
|
flag |= CMD_FLAG_BOOTD;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* OK - call function to do the command */
|
|
if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
|
|
rc = -1;
|
|
}
|
|
|
|
repeatable &= cmdtp->repeatable;
|
|
|
|
/* Did the user stop this? */
|
|
if (had_ctrlc ())
|
|
return -1; /* if stopped then not repeatable */
|
|
}
|
|
|
|
return rc ? rc : repeatable;
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
#if defined(CONFIG_CMD_RUN)
|
|
int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
int i;
|
|
|
|
if (argc < 2) {
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
|
return 1;
|
|
}
|
|
|
|
for (i=1; i<argc; ++i) {
|
|
char *arg;
|
|
|
|
if ((arg = getenv (argv[i])) == NULL) {
|
|
printf ("## Error: \"%s\" not defined\n", argv[i]);
|
|
return 1;
|
|
}
|
|
#ifndef CFG_HUSH_PARSER
|
|
if (run_command (arg, flag) == -1)
|
|
return 1;
|
|
#else
|
|
if (parse_string_outer(arg,
|
|
FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
|
|
return 1;
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|