91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* go- execute some code anywhere (misc boot support)
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*
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* (C) Copyright 2000-2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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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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#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <linux/ctype.h>
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#include <errno.h>
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static int do_go(struct command *cmdtp, int argc, char *argv[])
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{
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void *addr;
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int rcode = 1;
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int fd = -1;
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int (*func)(int argc, char *argv[]);
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if (argc < 2)
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return COMMAND_ERROR_USAGE;
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if (!isdigit(*argv[1])) {
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fd = open(argv[1], O_RDONLY);
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if (fd < 0) {
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perror("open");
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goto out;
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}
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addr = memmap(fd, PROT_READ);
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if (addr == (void *)-1) {
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perror("memmap");
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goto out;
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}
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} else
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addr = (void *)simple_strtoul(argv[1], NULL, 16);
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printf("## Starting application at 0x%p ...\n", addr);
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console_flush();
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func = addr;
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shutdown_barebox();
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func(argc - 1, &argv[1]);
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/*
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* The application returned. Since we have shutdown barebox and
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* we know nothing about the state of the cpu/memory we can't
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* do anything here.
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*/
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while (1);
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out:
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if (fd > 0)
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close(fd);
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return rcode;
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}
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static const __maybe_unused char cmd_go_help[] =
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"Usage: go addr [arg ...]\n"
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"Start application at address 'addr' passing 'arg' as arguments.\n"
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"If addr does not start with a digit it is interpreted as a filename\n"
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"in which case the file is memmapped and executed\n";
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BAREBOX_CMD_START(go)
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.cmd = do_go,
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.usage = "start application at address or file",
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BAREBOX_CMD_HELP(cmd_go_help)
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BAREBOX_CMD_END
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