release 3.4
https://sourceforge.net/projects/elilo/files/elilo/elilo-3.4/
This commit is contained in:
Stephane Eranian
commit
fb6ce0d596
100 changed files with 20247 additions and 0 deletions
410
choosers/simple.c
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410
choosers/simple.c
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@ -0,0 +1,410 @@
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/*
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* Copyright (C) 2001-2003 Hewlett-Packard Co.
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* Contributed by Stephane Eranian <eranian@hpl.hp.com>
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*
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* This file is part of the ELILO, the EFI Linux boot loader.
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*
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* ELILO 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, or (at your option)
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* any later version.
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*
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* ELILO 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 ELILO; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Please check out the elilo.txt for complete documentation on how
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* to use this program.
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*/
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#include <efi.h>
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#include <efilib.h>
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#include "elilo.h"
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#include "vars.h"
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/* static is ugly but does the job here! */
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static CHAR16 **alt_argv;
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static VOID
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display_label_info(CHAR16 *name)
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{
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CHAR16 *desc;
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CHAR16 initrd_name[CMDLINE_MAXLEN];
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CHAR16 options_tmp[CMDLINE_MAXLEN];
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CHAR16 options[CMDLINE_MAXLEN];
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CHAR16 kname[FILENAME_MAXLEN];
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desc = find_description(name);
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if (desc) {
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Print(L"desc : %s\n", desc);
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}
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initrd_name[0] = options_tmp[0] = kname[0] = CHAR_NULL;
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if (find_label(name, kname, options_tmp, initrd_name) == -1) {
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StrCpy(kname, name);
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Print(L"\n");
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}
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subst_vars(options_tmp, options, CMDLINE_MAXLEN);
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Print(L"cmdline: %s %s\n", kname, options);
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if (initrd_name[0]) Print(L"initrd : %s\n", initrd_name);
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}
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static VOID
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print_infos(int force)
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{
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CHAR16 *config_file;
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CHAR16 dpath[FILENAME_MAXLEN];
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CHAR16 *boot_dev_name;
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UINT8 is_abs;
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boot_dev_name = fops_bootdev_name();
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config_file = get_config_file();
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fops_getdefault_path(dpath, FILENAME_MAXLEN);
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if (force || elilo_opt.verbose > 0)
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Print(L"default file path: %s:%s\n", boot_dev_name, dpath);
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is_abs = config_file && (config_file[0] == CHAR_BACKSLASH || config_file[0] == CHAR_SLASH) ? 1 : 0;
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if (force || elilo_opt.verbose > 0)
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Print(L"config file : %s%s\n", config_file && is_abs == 0 ? dpath : L"", config_file ? config_file : L"none used");
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if (alt_argv) {
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CHAR16 **p = alt_argv;
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Print(L"found alternate default choice :");
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while (*p) Print(L" %s", *p++);
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Print(L"\n");
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}
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}
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static VOID
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print_help(int force)
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{
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if (force || elilo_opt.verbose > 0)
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Print(L"command list (must be first character):\n=:print device list, %%:print variable list, &:print paths, ?:help\nTAB:print label information\n");
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}
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/*
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* interactively select a kernel image and options.
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* The kernel can be an actual filename or a label in the config file
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* Return:
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* -1: if unsucessful
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* 0: otherwise
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*/
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static INTN
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select_kernel(CHAR16 *buffer, INTN size)
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{
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#define CHAR_CTRL_C L'\003' /* Unicode CTRL-C */
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#define CHAR_CTRL_D L'\004' /* Unicode CTRL-D */
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#define CHAR_CTRL_U L'\025' /* Unicode CTRL-U */
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//#define CHAR_TAB L'\t'
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SIMPLE_INPUT_INTERFACE *ip = systab->ConIn;
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EFI_INPUT_KEY key;
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EFI_STATUS status;
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INTN pos = 0, ret;
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INT8 first_time = 1;
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/*
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* let's give some help first
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*/
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print_help(0);
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print_infos(0);
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reprint:
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buffer[pos] = CHAR_NULL;
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Print(L"\nELILO boot: %s", buffer);
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/*
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* autoboot with default choice after timeout expires
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*/
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if (first_time && (ret=wait_timeout(elilo_opt.timeout)) != 1) {
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return ret == -1 ? -1: 0;
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}
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first_time = 0;
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for (;;) {
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while ((status=ip->ReadKeyStroke(ip, &key)) == EFI_NOT_READY);
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if (EFI_ERROR(status)) {
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ERR_PRT((L"select_kernel readkey: %r", status));
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return -1;
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}
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switch (key.UnicodeChar) {
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case CHAR_TAB:
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Print(L"\n");
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if (pos == 0) {
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print_label_list();
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Print(L"(or a kernel file name: [[dev_name:/]path/]kernel_image cmdline options)\n");
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} else {
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buffer[pos] = CHAR_NULL;
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display_label_info(buffer);
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}
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goto reprint;
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case L'%':
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if (pos>0) goto normal_char;
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Print(L"\n");
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print_vars();
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goto reprint;
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case L'?':
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if (pos>0) goto normal_char;
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Print(L"\n");
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print_help(1);
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goto reprint;
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case L'&':
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if (pos>0) goto normal_char;
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Print(L"\n");
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print_infos(1);
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goto reprint;
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case L'=':
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if (pos>0) goto normal_char;
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Print(L"\n");
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print_devices();
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goto reprint;
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case CHAR_BACKSPACE:
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if (pos == 0) break;
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pos--;
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Print(L"\b \b");
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break;
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case CHAR_CTRL_U: /* clear line */
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while (pos) {
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Print(L"\b \b");
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pos--;
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}
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break;
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case CHAR_CTRL_C: /* kill line */
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pos = 0;
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goto reprint;
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case CHAR_LINEFEED:
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case CHAR_CARRIAGE_RETURN:
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buffer[pos] = CHAR_NULL;
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Print(L"\n");
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return 0;
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default:
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normal_char:
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if (key.UnicodeChar == CHAR_CTRL_D || key.ScanCode == 0x17 ) {
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Print(L"\nGiving up then...\n");
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return -1;
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}
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if (key.UnicodeChar == CHAR_NULL) break;
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if (pos > size-1) break;
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buffer[pos++] = key.UnicodeChar;
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/* Write the character out */
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Print(L"%c", key.UnicodeChar);
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}
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}
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return 0;
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}
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static VOID
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display_message(VOID)
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{
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fops_fd_t fd;
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EFI_STATUS status;
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INTN len, i;
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CHAR16 *filename;
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CHAR8 buf[256];
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if ((filename = get_message_filename(0)) == NULL) return;
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if (*filename == CHAR_NULL) return;
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VERB_PRT(3, Print(L"opening message file %s\n", filename));
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status = fops_open(filename, &fd);
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if (EFI_ERROR(status)) {
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VERB_PRT(3, Print(L"message file %s not found\n", filename));
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return;
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}
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len = 256;
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Print(L"\n");
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while ((status = fops_read(fd, buf, &len)) == EFI_SUCCESS) {
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/* XXX: ugly ! */
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for (i=0; i < len; i++) {
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Print(L"%c", (CHAR16)buf[i]);
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}
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if (len < 256) break;
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}
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fops_close(fd);
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}
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static INTN
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simple_choose(CHAR16 **argv, INTN argc, INTN index, CHAR16 *kname, CHAR16 *cmdline)
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{
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# define BOOT_IMG_STR L"BOOT_IMAGE="
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CHAR16 buffer[CMDLINE_MAXLEN];
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CHAR16 alt_buffer[CMDLINE_MAXLEN];
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CHAR16 initrd_name[CMDLINE_MAXLEN];
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CHAR16 args[CMDLINE_MAXLEN];
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CHAR16 devname[CMDLINE_MAXLEN];
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CHAR16 dpath[FILENAME_MAXLEN];
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CHAR16 *slash_pos, *colon_pos, *backslash_pos;
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UINTN len;
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INTN ret;
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buffer[0] = alt_buffer[0] = CHAR_NULL;
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display_message();
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restart:
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initrd_name[0] = kname[0] = cmdline[0] = args[0] = CHAR_NULL;
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/* reset per image loader options */
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Memset(&elilo_opt.img_opt, 0, sizeof(elilo_opt.img_opt));
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/*
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* check for alternate kernel image and params in EFI variable
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*/
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if (elilo_opt.alt_check && alternate_kernel(alt_buffer, sizeof(alt_buffer)) == 0) {
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argc = argify(alt_buffer,sizeof(alt_buffer), argv);
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alt_argv = argv;
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index = 0;
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args[0] = initrd_name[0] = 0;
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/*
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* don't check twice because the variable is deleted after
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* first access
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*/
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elilo_opt.alt_check = 0;
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}
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if (elilo_opt.prompt) {
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ret = select_kernel(buffer, sizeof(buffer));
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if (ret == -1) return -1;
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argc = argify(buffer,sizeof(buffer), argv);
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index = 0;
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}
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/*
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* if we found an alternate choice and the user
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* did not force it manually, then use the alternate
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* option.
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*/
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if (alt_buffer[0] && buffer[0] == CHAR_NULL) {
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StrCpy(buffer, alt_buffer);
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}
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/*
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* First search for matching label in the config file
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* if options were specified on command line, they take
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* precedence over the ones in the config file
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*
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* if no match is found, the args and initrd arguments may
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* still be modified by global options in the config file.
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*/
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ret = find_label(argv[index], kname, args, initrd_name);
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/*
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* not found, so assume first argument is kernel name and
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* not label name
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*/
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if (ret == -1) {
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if (argv[index])
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StrCpy(kname, argv[index]);
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else
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StrCpy(kname, elilo_opt.default_kernel);
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}
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/*
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* no matter what happened for kname, if user specified
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* additional options, they override the ones in the
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* config file
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*/
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if (argc > 1+index) {
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/*StrCpy(args, argv[++index]);*/
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while (++index < argc) {
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StrCat(args, L" ");
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StrCat(args, argv[index]);
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}
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}
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/*
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* if initrd specified on command line, it overrides
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* the one defined in config file, if any
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*/
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if (elilo_opt.initrd[0] == CHAR_NULL && initrd_name[0] != CHAR_NULL) {
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StrCpy(elilo_opt.initrd, initrd_name);
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}
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VERB_PRT(1, { Print(L"kernel is '%s'\n", kname);
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Print(L"arguments are '%s'\n", args);
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if (elilo_opt.initrd[0]) Print(L"initrd is '%s'\n", elilo_opt.initrd);
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});
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if (elilo_opt.prompt == 0) {
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/* minimal printing */
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Print(L"ELILO\n");
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ret = wait_timeout(elilo_opt.delay);
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if (ret != 0) {
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elilo_opt.prompt = 1;
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elilo_opt.timeout = ELILO_TIMEOUT_INFINITY;
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goto restart;
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}
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}
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/*
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* add the device name, if not already specified,
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* so that we know where we came from
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*/
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slash_pos = StrChr(kname, L'/');
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backslash_pos = StrChr(kname, L'\\');
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colon_pos = StrChr(kname, L':');
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if (backslash_pos && backslash_pos < slash_pos) slash_pos = backslash_pos;
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if (colon_pos == NULL || (slash_pos && (slash_pos < colon_pos))) {
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StrCpy(devname, fops_bootdev_name());
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StrCat(devname, L":");
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/* the default path is always terminated with a separator */
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if (kname[0] != L'/' && kname[0] != L'\\') {
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fops_getdefault_path(dpath,FILENAME_MAXLEN);
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StrCat(devname, dpath);
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}
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} else {
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devname[0] = CHAR_NULL;
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}
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/*
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* create final argument list to the kernel
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*/
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len = StrLen(BOOT_IMG_STR) /* BOOT_IMAGE= */
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+StrLen(devname) /* device name */
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+StrLen(kname) /* kernel name */
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+1 /* space */
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+StrLen(args); /* args length */
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if (len >= CMDLINE_MAXLEN-1) {
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ERR_PRT((L" arguments list too long cannot fit BOOT_IMAGE\n"));
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return -1;
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}
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StrCpy(cmdline, L"BOOT_IMAGE=");
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StrCat(cmdline, devname);
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StrCat(cmdline, kname);
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StrCat(cmdline, L" ");
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StrCat(cmdline, args);
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return 0;
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}
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static INTN
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simple_probe(EFI_HANDLE dev)
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{
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/* this chooser always work */
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return 0;
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}
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chooser_t simple_chooser={
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L"simple",
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simple_probe,
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simple_choose
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};
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