GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy.c

   1 /******************************************************************************
   2  * ventoy.c
   3  *
   4  * Copyright (c) 2020, longpanda <admin@ventoy.net>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include <grub/types.h>
  22 #include <grub/misc.h>
  23 #include <grub/mm.h>
  24 #include <grub/err.h>
  25 #include <grub/dl.h>
  26 #include <grub/disk.h>
  27 #include <grub/device.h>
  28 #include <grub/term.h>
  29 #include <grub/partition.h>
  30 #include <grub/file.h>
  31 #include <grub/normal.h>
  32 #include <grub/extcmd.h>
  33 #include <grub/datetime.h>
  34 #include <grub/net.h>
  35 #include <grub/misc.h>
  36 #include <grub/kernel.h>
  37 #include <grub/time.h>
  38 #include <grub/memory.h>
  39 #ifdef GRUB_MACHINE_EFI
  40 #include <grub/efi/efi.h>
  41 #endif
  42 #include <grub/ventoy.h>
  43 #include "ventoy_def.h"
  44
  45 GRUB_MOD_LICENSE ("GPLv3+");
  46
  47 int g_ventoy_debug = 0;
  48 static int g_efi_os = 0xFF;
  49 grub_uint32_t g_ventoy_plat_data;
  50
  51 void ventoy_debug(const char *fmt, ...)
  52 {
  53     va_list args;
  54
  55     va_start (args, fmt);
  56     grub_vprintf (fmt, args);
  57     va_end (args);
  58 }
  59
  60 void ventoy_str_tolower(char *str)
  61 {
  62     while (*str)
  63     {
  64         *str = grub_tolower(*str);
  65         str++;
  66     }
  67 }
  68
  69 void ventoy_str_toupper(char *str)
  70 {
  71     while (*str)
  72     {
  73         *str = grub_toupper(*str);
  74         str++;
  75     }
  76 }
  77
  78
  79
  80 int ventoy_strcmp(const char *pattern, const char *str)
  81 {
  82     while (*pattern && *str)
  83     {
  84         if ((*pattern != *str) && (*pattern != '*'))
  85             break;
  86
  87         pattern++;
  88         str++;
  89     }
  90
  91     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
  92 }
  93
  94 int ventoy_strncmp (const char *pattern, const char *str, grub_size_t n)
  95 {
  96     if (n == 0)
  97         return 0;
  98
  99     while (*pattern && *str && --n)
 100     {
 101         if ((*pattern != *str) && (*pattern != '*'))
 102             break;
 103
 104         pattern++;
 105         str++;
 106     }
 107
 108     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 109 }
 110
 111 void ventoy_debug_dump_guid(const char *prefix, grub_uint8_t *guid)
 112 {
 113     int i;
 114
 115     if (!g_ventoy_debug)
 116     {
 117         return;
 118     }
 119
 120     debug("%s", prefix);
 121     for (i = 0; i < 16; i++)
 122     {
 123         grub_printf("%02x ", guid[i]);
 124     }
 125     grub_printf("\n");
 126 }
 127
 128 int ventoy_is_efi_os(void)
 129 {
 130     if (g_efi_os > 1)
 131     {
 132         g_efi_os = (grub_strstr(GRUB_PLATFORM, "efi")) ? 1 : 0;
 133     }
 134
 135     return g_efi_os;
 136 }
 137
 138 static int ventoy_arch_mode_init(void)
 139 {
 140     #ifdef GRUB_MACHINE_EFI
 141     if (grub_strcmp(GRUB_TARGET_CPU, "i386") == 0)
 142     {
 143         g_ventoy_plat_data = VTOY_PLAT_I386_UEFI;
 144         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "ia32");
 145     }
 146     else if (grub_strcmp(GRUB_TARGET_CPU, "arm64") == 0)
 147     {
 148         g_ventoy_plat_data = VTOY_PLAT_ARM64_UEFI;
 149         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "aa64");
 150     }
 151     else if (grub_strcmp(GRUB_TARGET_CPU, "mips64el") == 0)
 152     {
 153         g_ventoy_plat_data = VTOY_PLAT_MIPS_UEFI;
 154         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "mips");
 155     }
 156     else
 157     {
 158         g_ventoy_plat_data = VTOY_PLAT_X86_64_UEFI;
 159         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "uefi");
 160     }
 161 #else
 162     g_ventoy_plat_data = VTOY_PLAT_X86_LEGACY;
 163     grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "legacy");
 164 #endif
 165
 166     return 0;
 167 }
 168
 169 #ifdef GRUB_MACHINE_EFI
 170 static void ventoy_get_uefi_version(char *str, grub_size_t len)
 171 {
 172     grub_efi_uint8_t uefi_minor_1, uefi_minor_2;
 173
 174     uefi_minor_1 = (grub_efi_system_table->hdr.revision & 0xffff) / 10;
 175     uefi_minor_2 = (grub_efi_system_table->hdr.revision & 0xffff) % 10;
 176     grub_snprintf(str, len, "%d.%d", (grub_efi_system_table->hdr.revision >> 16), uefi_minor_1);
 177     if (uefi_minor_2)
 178         grub_snprintf(str, len, "%s.%d", str, uefi_minor_2);
 179 }
 180 #endif
 181
 182 static int ventoy_calc_totalmem(grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, void *data)
 183 {
 184     grub_uint64_t *total_mem = (grub_uint64_t *)data;
 185
 186     (void)addr;
 187     (void)type;
 188
 189     *total_mem += size;
 190
 191     return 0;
 192 }
 193
 194 static int ventoy_hwinfo_init(void)
 195 {
 196     char str[256];
 197     grub_uint64_t total_mem = 0;
 198
 199     grub_machine_mmap_iterate(ventoy_calc_totalmem, &total_mem);
 200
 201     grub_snprintf(str, sizeof(str), "%ld", (long)(total_mem / VTOY_SIZE_1MB));
 202     ventoy_env_export("grub_total_ram", str);
 203
 204 #ifdef GRUB_MACHINE_EFI
 205     ventoy_get_uefi_version(str, sizeof(str));
 206     ventoy_env_export("grub_uefi_version", str);
 207 #endif
 208
 209     return 0;
 210 }
 211
 212 GRUB_MOD_INIT(ventoy)
 213 {
 214     ventoy_hwinfo_init();
 215     ventoy_env_init();
 216     ventoy_arch_mode_init();
 217     ventoy_register_all_cmd();
 218 }
 219
 220 GRUB_MOD_FINI(ventoy)
 221 {
 222     ventoy_unregister_all_cmd();
 223 }
 224