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 char *ventoy_str_last(char *str, char ch)
  80 {
  81     char *pos = NULL;
  82     char *last = NULL;
  83
  84     if (!str)
  85     {
  86         return NULL;
  87     }
  88
  89     for (pos = str; *pos; pos++)
  90     {
  91         if (*pos == ch)
  92         {
  93             last = pos;
  94         }
  95     }
  96
  97     return last;
  98 }
  99
 100 int ventoy_strcmp(const char *pattern, const char *str)
 101 {
 102     while (*pattern && *str)
 103     {
 104         if ((*pattern != *str) && (*pattern != '*'))
 105             break;
 106
 107         pattern++;
 108         str++;
 109     }
 110
 111     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 112 }
 113
 114 int ventoy_strncmp (const char *pattern, const char *str, grub_size_t n)
 115 {
 116     if (n == 0)
 117         return 0;
 118
 119     while (*pattern && *str && --n)
 120     {
 121         if ((*pattern != *str) && (*pattern != '*'))
 122             break;
 123
 124         pattern++;
 125         str++;
 126     }
 127
 128     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 129 }
 130
 131 void ventoy_debug_dump_guid(const char *prefix, grub_uint8_t *guid)
 132 {
 133     int i;
 134
 135     if (!g_ventoy_debug)
 136     {
 137         return;
 138     }
 139
 140     debug("%s", prefix);
 141     for (i = 0; i < 16; i++)
 142     {
 143         grub_printf("%02x ", guid[i]);
 144     }
 145     grub_printf("\n");
 146 }
 147
 148 int ventoy_is_efi_os(void)
 149 {
 150     if (g_efi_os > 1)
 151     {
 152         g_efi_os = (grub_strstr(GRUB_PLATFORM, "efi")) ? 1 : 0;
 153     }
 154
 155     return g_efi_os;
 156 }
 157
 158 void * ventoy_alloc_chain(grub_size_t size)
 159 {
 160     void *p = NULL;
 161
 162     p = grub_malloc(size);
 163 #ifdef GRUB_MACHINE_EFI
 164     if (!p)
 165     {
 166         p = grub_efi_allocate_any_pages(GRUB_EFI_BYTES_TO_PAGES(size));
 167     }
 168 #endif
 169
 170     return p;
 171 }
 172
 173
 174 static int ventoy_arch_mode_init(void)
 175 {
 176     #ifdef GRUB_MACHINE_EFI
 177     if (grub_strcmp(GRUB_TARGET_CPU, "i386") == 0)
 178     {
 179         g_ventoy_plat_data = VTOY_PLAT_I386_UEFI;
 180         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "ia32");
 181     }
 182     else if (grub_strcmp(GRUB_TARGET_CPU, "arm64") == 0)
 183     {
 184         g_ventoy_plat_data = VTOY_PLAT_ARM64_UEFI;
 185         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "aa64");
 186     }
 187     else if (grub_strcmp(GRUB_TARGET_CPU, "mips64el") == 0)
 188     {
 189         g_ventoy_plat_data = VTOY_PLAT_MIPS_UEFI;
 190         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "mips");
 191     }
 192     else
 193     {
 194         g_ventoy_plat_data = VTOY_PLAT_X86_64_UEFI;
 195         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "uefi");
 196     }
 197 #else
 198     g_ventoy_plat_data = VTOY_PLAT_X86_LEGACY;
 199     grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "legacy");
 200 #endif
 201
 202     return 0;
 203 }
 204
 205 #ifdef GRUB_MACHINE_EFI
 206 static void ventoy_get_uefi_version(char *str, grub_size_t len)
 207 {
 208     grub_efi_uint8_t uefi_minor_1, uefi_minor_2;
 209
 210     uefi_minor_1 = (grub_efi_system_table->hdr.revision & 0xffff) / 10;
 211     uefi_minor_2 = (grub_efi_system_table->hdr.revision & 0xffff) % 10;
 212     grub_snprintf(str, len, "%d.%d", (grub_efi_system_table->hdr.revision >> 16), uefi_minor_1);
 213     if (uefi_minor_2)
 214         grub_snprintf(str, len, "%s.%d", str, uefi_minor_2);
 215 }
 216 #endif
 217
 218 static int ventoy_calc_totalmem(grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, void *data)
 219 {
 220     grub_uint64_t *total_mem = (grub_uint64_t *)data;
 221
 222     (void)addr;
 223     (void)type;
 224
 225     *total_mem += size;
 226
 227     return 0;
 228 }
 229
 230 static int ventoy_hwinfo_init(void)
 231 {
 232     char str[256];
 233     grub_uint64_t total_mem = 0;
 234
 235     grub_machine_mmap_iterate(ventoy_calc_totalmem, &total_mem);
 236
 237     grub_snprintf(str, sizeof(str), "%ld", (long)(total_mem / VTOY_SIZE_1MB));
 238     ventoy_env_export("grub_total_ram", str);
 239
 240 #ifdef GRUB_MACHINE_EFI
 241     ventoy_get_uefi_version(str, sizeof(str));
 242     ventoy_env_export("grub_uefi_version", str);
 243 #endif
 244
 245     return 0;
 246 }
 247
 248 GRUB_MOD_INIT(ventoy)
 249 {
 250     ventoy_hwinfo_init();
 251     ventoy_env_init();
 252     ventoy_arch_mode_init();
 253     ventoy_register_all_cmd();
 254 }
 255
 256 GRUB_MOD_FINI(ventoy)
 257 {
 258     ventoy_unregister_all_cmd();
 259 }
 260