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 #include <grub/efi/memory.h>
  42 #endif
  43 #include <grub/ventoy.h>
  44 #include "ventoy_def.h"
  45
  46 GRUB_MOD_LICENSE ("GPLv3+");
  47
  48 int g_ventoy_debug = 0;
  49 static int g_efi_os = 0xFF;
  50 grub_uint32_t g_ventoy_plat_data;
  51
  52 void ventoy_debug(const char *fmt, ...)
  53 {
  54     va_list args;
  55
  56     va_start (args, fmt);
  57     grub_vprintf (fmt, args);
  58     va_end (args);
  59 }
  60
  61 void ventoy_str_tolower(char *str)
  62 {
  63     while (*str)
  64     {
  65         *str = grub_tolower(*str);
  66         str++;
  67     }
  68 }
  69
  70 void ventoy_str_toupper(char *str)
  71 {
  72     while (*str)
  73     {
  74         *str = grub_toupper(*str);
  75         str++;
  76     }
  77 }
  78
  79
  80
  81 int ventoy_strcmp(const char *pattern, const char *str)
  82 {
  83     while (*pattern && *str)
  84     {
  85         if ((*pattern != *str) && (*pattern != '*'))
  86             break;
  87
  88         pattern++;
  89         str++;
  90     }
  91
  92     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
  93 }
  94
  95 int ventoy_strncmp (const char *pattern, const char *str, grub_size_t n)
  96 {
  97     if (n == 0)
  98         return 0;
  99
 100     while (*pattern && *str && --n)
 101     {
 102         if ((*pattern != *str) && (*pattern != '*'))
 103             break;
 104
 105         pattern++;
 106         str++;
 107     }
 108
 109     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 110 }
 111
 112 void ventoy_debug_dump_guid(const char *prefix, grub_uint8_t *guid)
 113 {
 114     int i;
 115
 116     if (!g_ventoy_debug)
 117     {
 118         return;
 119     }
 120
 121     debug("%s", prefix);
 122     for (i = 0; i < 16; i++)
 123     {
 124         grub_printf("%02x ", guid[i]);
 125     }
 126     grub_printf("\n");
 127 }
 128
 129 int ventoy_is_efi_os(void)
 130 {
 131     if (g_efi_os > 1)
 132     {
 133         g_efi_os = (grub_strstr(GRUB_PLATFORM, "efi")) ? 1 : 0;
 134     }
 135
 136     return g_efi_os;
 137 }
 138
 139 void * ventoy_alloc_chain(grub_size_t size)
 140 {
 141     void *p = NULL;
 142
 143     p = grub_malloc(size);
 144 #ifdef GRUB_MACHINE_EFI
 145     if (!p)
 146     {
 147         p = grub_efi_allocate_any_pages(GRUB_EFI_BYTES_TO_PAGES(size));
 148     }
 149 #endif
 150
 151     return p;
 152 }
 153
 154
 155 static int ventoy_arch_mode_init(void)
 156 {
 157     #ifdef GRUB_MACHINE_EFI
 158     if (grub_strcmp(GRUB_TARGET_CPU, "i386") == 0)
 159     {
 160         g_ventoy_plat_data = VTOY_PLAT_I386_UEFI;
 161         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "ia32");
 162     }
 163     else if (grub_strcmp(GRUB_TARGET_CPU, "arm64") == 0)
 164     {
 165         g_ventoy_plat_data = VTOY_PLAT_ARM64_UEFI;
 166         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "aa64");
 167     }
 168     else if (grub_strcmp(GRUB_TARGET_CPU, "mips64el") == 0)
 169     {
 170         g_ventoy_plat_data = VTOY_PLAT_MIPS_UEFI;
 171         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "mips");
 172     }
 173     else
 174     {
 175         g_ventoy_plat_data = VTOY_PLAT_X86_64_UEFI;
 176         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "uefi");
 177     }
 178 #else
 179     g_ventoy_plat_data = VTOY_PLAT_X86_LEGACY;
 180     grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "legacy");
 181 #endif
 182
 183     return 0;
 184 }
 185
 186 #ifdef GRUB_MACHINE_EFI
 187 static void ventoy_get_uefi_version(char *str, grub_size_t len)
 188 {
 189     grub_efi_uint8_t uefi_minor_1, uefi_minor_2;
 190
 191     uefi_minor_1 = (grub_efi_system_table->hdr.revision & 0xffff) / 10;
 192     uefi_minor_2 = (grub_efi_system_table->hdr.revision & 0xffff) % 10;
 193     grub_snprintf(str, len, "%d.%d", (grub_efi_system_table->hdr.revision >> 16), uefi_minor_1);
 194     if (uefi_minor_2)
 195         grub_snprintf(str, len, "%s.%d", str, uefi_minor_2);
 196 }
 197 #endif
 198
 199 static int ventoy_calc_totalmem(grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, void *data)
 200 {
 201     grub_uint64_t *total_mem = (grub_uint64_t *)data;
 202
 203     (void)addr;
 204     (void)type;
 205
 206     *total_mem += size;
 207
 208     return 0;
 209 }
 210
 211 static int ventoy_hwinfo_init(void)
 212 {
 213     char str[256];
 214     grub_uint64_t total_mem = 0;
 215
 216     grub_machine_mmap_iterate(ventoy_calc_totalmem, &total_mem);
 217
 218     grub_snprintf(str, sizeof(str), "%ld", (long)(total_mem / VTOY_SIZE_1MB));
 219     ventoy_env_export("grub_total_ram", str);
 220
 221 #ifdef GRUB_MACHINE_EFI
 222     ventoy_get_uefi_version(str, sizeof(str));
 223     ventoy_env_export("grub_uefi_version", str);
 224 #endif
 225
 226     return 0;
 227 }
 228
 229 GRUB_MOD_INIT(ventoy)
 230 {
 231     ventoy_hwinfo_init();
 232     ventoy_env_init();
 233     ventoy_arch_mode_init();
 234     ventoy_register_all_cmd();
 235 }
 236
 237 GRUB_MOD_FINI(ventoy)
 238 {
 239     ventoy_unregister_all_cmd();
 240 }
 241