mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-23 18:38:51 +09:00
![Peter Tyser](/assets/img/avatar_default.png)
Removed unneeded command line history initialization. Also, the original code would access the 'initted' variable before relocation to SDRAM which resulted in erratic behavior since the bss is not initialized when executing from flash. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
1429 lines
30 KiB
C
1429 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) || defined(CONFIG_CMDLINE_EDITING)
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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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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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#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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|
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#ifdef CONFIG_CMDLINE_EDITING
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/*
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* cmdline-editing related codes from vivi.
|
|
* Author: Janghoon Lyu <nandy@mizi.com>
|
|
*/
|
|
|
|
#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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|
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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
|
|
|
|
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;
|
|
|
|
/*
|
|
* History uses a global array which is not
|
|
* writable until after relocation to RAM.
|
|
* Revert to non-history version if still
|
|
* running from flash.
|
|
*/
|
|
if (gd->flags & GD_FLG_RELOC) {
|
|
if (!initted) {
|
|
hist_init();
|
|
initted = 1;
|
|
}
|
|
|
|
puts (prompt);
|
|
|
|
rc = cread_line(prompt, p, &len);
|
|
return rc < 0 ? rc : len;
|
|
|
|
} else {
|
|
#endif /* CONFIG_CMDLINE_EDITING */
|
|
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');
|
|
}
|
|
}
|
|
}
|
|
#ifdef CONFIG_CMDLINE_EDITING
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
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);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
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
|