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1 /*
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2 * Copyright (C) 2001-2003 Hewlett-Packard Co.
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3 * Contributed by Stephane Eranian <eranian@hpl.hp.com>
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4 *
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5 * This file is part of the ELILO, the EFI Linux boot loader.
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6 *
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7 * ELILO is free software; you can redistribute it and/or modify
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8 * it under the terms of the GNU General Public License as published by
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9 * the Free Software Foundation; either version 2, or (at your option)
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10 * any later version.
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11 *
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12 * ELILO is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 * GNU General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU General Public License
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18 * along with ELILO; see the file COPYING. If not, write to the Free
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19 * Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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20 * 02111-1307, USA.
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21 *
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22 * Please check out the elilo.txt for complete documentation on how
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23 * to use this program.
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24 */
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25
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26 #include <efi.h>
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27 #include <efilib.h>
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28
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29 #include "elilo.h"
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30 #include "config.h"
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31 #include "private.h"
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32 #include "sysdeps.h"
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33 #include "getopt.h"
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34
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35 typedef struct {
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36 CHAR16 fpswa[FILENAME_MAXLEN];
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37 CHAR16 cmd_fpswa[FILENAME_MAXLEN];
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38 UINTN allow_relocation;
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39 } ia64_global_config_t;
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40
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41 #define ia64_opt_offsetof(option) (&((sys_img_options_t *)(0x0))->option)
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42
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43 static ia64_global_config_t ia64_gconf;
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44
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45 /*
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46 * No IA-64 specific options at this point
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47 * The last entry in each table MUST be use the OPT_NULL type to terminate
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48 * the chain.
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49 */
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50 config_option_t sysdeps_global_options[]={
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51 {OPT_FILE, OPT_GLOBAL, L"fpswa", NULL, NULL, ia64_gconf.fpswa},
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52 {OPT_BOOL, OPT_GLOBAL, L"relocatable", NULL, NULL, &ia64_gconf.allow_relocation},
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53 };
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54
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55 config_option_t sysdeps_image_options[]={
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56 {OPT_BOOL, OPT_IMAGE_SYS, L"relocatable", NULL, NULL, ia64_opt_offsetof(allow_relocation)},
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57 };
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58
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59
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60 /*
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61 * IA-64 operations that need to be done only once and just before
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62 * entering the main loop of the loader
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63 * Return:
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64 * 0 if sucessful
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65 * -1 otherwise (will abort execution)
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66 */
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67 INTN
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68 sysdeps_preloop_actions(EFI_HANDLE dev, CHAR16 **argv, INTN argc, INTN index, EFI_HANDLE image)
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69 {
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70 /*
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71 * we have separate string to make sure that the command line take precedence over
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72 * the config file
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73 */
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74 if (ia64_gconf.cmd_fpswa[0] != CHAR_NULL) {
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75 check_fpswa(image, dev, ia64_gconf.cmd_fpswa);
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76 } else if (ia64_gconf.fpswa[0] != CHAR_NULL)
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77 check_fpswa(image, dev, ia64_gconf.fpswa);
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78 else
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79 check_fpswa(image, dev, NULL);
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80
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81 return 0;
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82 }
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83
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84 /*
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85 * Return:
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86 * 1: if image or global configuration allows relocation
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87 * 0: otherwise
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88 *
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89 * It is written has a function rather than a macro to avoid
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90 * exposing config data structure to the rest of the code in ia64
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91 */
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92 INTN
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93 ia64_can_relocate(VOID)
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94 {
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95 return ia64_gconf.allow_relocation == TRUE
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96 || (elilo_opt.sys_img_opts && elilo_opt.sys_img_opts->allow_relocation ==TRUE) ? 1 : 0;
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97 }
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98
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99 #define IA64_CMDLINE_OPTIONS L"rF:"
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100
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101 CHAR16 *
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102 sysdeps_get_cmdline_opts(VOID)
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103 {
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104 return IA64_CMDLINE_OPTIONS;
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105 }
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106
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107 INTN
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108 sysdeps_getopt(INTN c, INTN optind, CHAR16 *optarg)
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109 {
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110 INTN ret = 0; /* let's be optimistic ! */
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111
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112 /*
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113 * XXX: for now these command line options have to be global
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114 */
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115 switch(c) {
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116 case L'r':
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117 ia64_gconf.allow_relocation = 1;
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118 break;
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119 case L'F':
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120 if (StrLen(Optarg) >= FILENAME_MAXLEN) {
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121 Print(L"FPSWA filename is limited to %d characters\n", FILENAME_MAXLEN);
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122 return -1;
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123 }
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124 StrCpy(ia64_gconf.cmd_fpswa, Optarg);
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125 break;
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126 default:
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127 ret = -1;
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128 }
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129 return ret;
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130 }
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131
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132 VOID
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133 sysdeps_print_cmdline_opts(VOID)
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134 {
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135 Print(L"-r kernel image can be relocated if load address inexistent\n");
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136 Print(L"-F file name of a specific FPSWA EFI driver to load\n");
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137 }
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138
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139 INTN
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140 sysdeps_register_options(VOID)
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141 {
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142 INTN ret;
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143
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144 ret = register_config_options(sysdeps_global_options,
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145 sizeof(sysdeps_global_options)/sizeof(config_option_t),
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146 OPTIONS_GROUP_GLOBAL);
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147 if (ret == -1 ) return ret;
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148
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149 ret = register_config_options(sysdeps_image_options,
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150 sizeof(sysdeps_image_options)/sizeof(config_option_t),
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151 OPTIONS_GROUP_IMAGE);
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152
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153 return ret;
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154 }
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