184 lines
4.2 KiB
C
184 lines
4.2 KiB
C
/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2003 Free Software Foundation, Inc.
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*
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* PUPA is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 PUPA; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include <malloc.h>
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#include <sys/stat.h>
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#include <argp.h>
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#include <string.h>
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#include <pupa/mm.h>
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#include <pupa/setjmp.h>
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#include <pupa/fs.h>
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#include <pupa/i386/pc/util/biosdisk.h>
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#include <pupa/dl.h>
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#include <pupa/machine/console.h>
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#include <pupa/util/misc.h>
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#include <pupa/kernel.h>
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#include <pupa/normal.h>
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#include <pupa/util/getroot.h>
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#include <pupa/env.h>
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#ifdef __NetBSD__
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/* NetBSD uses /boot for its boot block. */
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# define DEFAULT_DIRECTORY "/pupa"
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#else
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# define DEFAULT_DIRECTORY "/boot/pupa"
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#endif
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#define DEFAULT_DEVICE_MAP DEFAULT_DIRECTORY "/device.map"
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/* XXX. */
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pupa_addr_t pupa_end_addr = -1;
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pupa_addr_t pupa_total_module_size = 0;
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int
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pupa_arch_dl_check_header (void *ehdr, pupa_size_t size)
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{
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(void) ehdr;
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(void) size;
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return PUPA_ERR_BAD_MODULE;
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}
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pupa_err_t
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pupa_arch_dl_relocate_symbols (pupa_dl_t mod, void *ehdr)
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{
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(void) mod;
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(void) ehdr;
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return PUPA_ERR_BAD_MODULE;
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}
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void
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pupa_machine_init (void)
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{
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pupa_console_init ();
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}
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const char *argp_program_version = PACKAGE_STRING;
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const char *argp_program_bug_address = PACKAGE_BUGREPORT;
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static char doc[] = "PUPA emulator";
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static struct argp_option options[] = {
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{"root-device", 'r', "DEV", 0, "use DEV as the root device [default=guessed]", 0},
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{"device-map", 'm', "FILE", 0, "use FILE as the device map", 0},
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{"directory", 'd', "DIR", 0, "use PUPA files in the directory DIR", 0},
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{"verbose", 'v', 0 , 0, "print verbose messages", 0},
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{ 0, 0, 0, 0, 0, 0 }
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};
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struct arguments
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{
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char *root_dev;
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char *dev_map;
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char *dir;
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};
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static error_t
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parse_opt (int key, char *arg, struct argp_state *state)
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{
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struct arguments *args = state->input;
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switch (key)
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{
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case 'r':
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args->root_dev = arg;
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break;
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case 'd':
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args->dir = arg;
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break;
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case 'm':
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args->dev_map = arg;
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break;
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case 'v':
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verbosity++;
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break;
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case ARGP_KEY_END:
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break;
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default:
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return ARGP_ERR_UNKNOWN;
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}
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return 0;
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}
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static struct argp argp = {options, parse_opt, 0, doc, 0, 0, 0};
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int
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main (int argc, char *argv[])
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{
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char *prefix = 0;
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char rootprefix[100];
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struct arguments args =
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{
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.dir = DEFAULT_DIRECTORY,
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.dev_map = DEFAULT_DEVICE_MAP
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};
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argp_parse (&argp, argc, argv, 0, 0, &args);
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/* More sure there is a root device. */
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if (! args.root_dev)
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{
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args.root_dev = pupa_guess_root_device (args.dir ? : DEFAULT_DIRECTORY);
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if (! args.root_dev)
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{
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pupa_util_info ("guessing the root device failed, because of `%s'",
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pupa_errmsg);
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pupa_util_error ("Cannot guess the root device. Specify the option ``--root-device''.");
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}
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}
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prefix = pupa_get_prefix (args.dir ? : DEFAULT_DIRECTORY);
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sprintf (rootprefix, "%s%s", args.root_dev, prefix);
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pupa_env_set ("prefix", rootprefix);
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/* XXX: This is a bit unportable. */
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pupa_util_biosdisk_init (args.dev_map);
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/* Initialize the default modules. */
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pupa_fat_init ();
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pupa_ext2_init ();
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pupa_ls_init ();
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pupa_boot_init ();
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pupa_cmp_init ();
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pupa_cat_init ();
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pupa_terminal_init ();
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/* XXX: Should normal mode be started by default? */
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pupa_normal_init ();
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/* Start PUPA! */
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pupa_main ();
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pupa_util_biosdisk_fini ();
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pupa_normal_fini ();
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pupa_ext2_fini ();
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pupa_fat_fini ();
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pupa_boot_fini ();
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pupa_cmp_fini ();
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pupa_cat_fini ();
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pupa_terminal_fini ();
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return 0;
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}
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