mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-25 16:37:42 +01:00
7c0aa811ec
Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
135 lines
4.2 KiB
C
135 lines
4.2 KiB
C
/* grub_driver.c - Data that needs to be altered for each driver */
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/*
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* Copyright © 2014 Pete Batard <pete@akeo.ie>
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* Based on GRUB -- GRand Unified Bootloader
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* Copyright © 2001-2014 Free Software Foundation, Inc.
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* Path sanitation code by Ludwig Nussel <ludwig.nussel@suse.de>
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*
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* This program 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 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/err.h>
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#include "driver.h"
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/* Setup generic function calls for grub_<fs>_init and grub_<fs>_exit */
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#define MAKE_FN_NAME(drivername, suffix) grub_ ## drivername ## _ ## suffix
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#define GRUB_FS_CALL(drivername, suffix) MAKE_FN_NAME(drivername, suffix)
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extern void GRUB_FS_CALL(DRIVERNAME, init)(void);
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extern void GRUB_FS_CALL(DRIVERNAME, fini)(void);
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#if defined(EXTRAMODULE)
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extern void GRUB_FS_CALL(EXTRAMODULE, init)(void);
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extern void GRUB_FS_CALL(EXTRAMODULE, fini)(void);
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#endif
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#if defined(EXTRAMODULE2)
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extern void GRUB_FS_CALL(EXTRAMODULE2, init)(void);
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extern void GRUB_FS_CALL(EXTRAMODULE2, fini)(void);
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#endif
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extern LIST_ENTRY FsListHead;
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CHAR16 *DriverNameString = L"efifs " WIDEN(STRINGIFY(FS_DRIVER_VERSION_MAJOR)) L"."
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WIDEN(STRINGIFY(FS_DRIVER_VERSION_MINOR)) L"." WIDEN(STRINGIFY(FS_DRIVER_VERSION_MICRO))
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L" " WIDEN(STRINGIFY(DRIVERNAME)) L" driver (" WIDEN(PACKAGE_STRING) L")";
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/**
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* Set a filesystem GUID according to the filesystem name
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* We use a static ID for the first 8 bytes, and then roll the lowercase name
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* for the last 8 bytes (eg. exfat => {'e', 'x', 'f', 'a', 't', 'e', 'x', 'f'})
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*/
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EFI_GUID *
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GetFSGuid(VOID)
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{
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INTN i, j, k, Len = StrLen(WIDEN(STRINGIFY(DRIVERNAME)));
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static EFI_GUID Guid = { 0xEF1F5EF1, 0xF17E, 0x5857, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } };
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CHAR16 *FsName = WIDEN(STRINGIFY(DRIVERNAME));
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const CHAR16 *PlusName = L"plus";
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EFI_UNICODE_COLLATION_PROTOCOL *UnicodeCollation;
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UINT8 Data4[12]; /* +4 so that we can also reduce something like "1234567plus" into "1234567+" */
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EFI_STATUS Status = EFI_SUCCESS;
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Status = gBS->LocateProtocol(&gEfiUnicodeCollation2ProtocolGuid, NULL, (VOID**)&UnicodeCollation);
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if (EFI_ERROR(Status) || (UnicodeCollation == NULL))
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{
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Status = gBS->LocateProtocol(&gEfiUnicodeCollationProtocolGuid, NULL, (VOID**)&UnicodeCollation);
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}
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if (EFI_ERROR(Status) || (UnicodeCollation == NULL))
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{
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Print(L"ERROR: Could not open unicode collation protocol\n");
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return NULL;
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}
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UnicodeCollation->StrLwr(UnicodeCollation, FsName);
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for (i = 0, j = 0, k = 0; j < ARRAYSIZE(Data4); i = (i+1)%Len, j++) {
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/* Convert any 'plus' that is part of the name to '+' */
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if (FsName[i] == PlusName[k]) {
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if (++k == 4) {
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k = 0;
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j -= 3;
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Data4[j] = (UINT8) '+';
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} else {
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Data4[j] = FsName[i];
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}
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} else {
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k = 0;
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Data4[j] = FsName[i];
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}
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}
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if (FsName != NULL)
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{
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FreePool(FsName);
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FsName = NULL;
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}
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CopyMem(Guid.Data4, Data4, 8);
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return &Guid;
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}
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VOID
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GrubDriverInit(VOID)
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{
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/* Register the relevant GRUB filesystem module */
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GRUB_FS_CALL(DRIVERNAME, init)();
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/* The GRUB compression routines are registered as extra module(s) */
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// TODO: Eventually, we could try to turn each GRUB module into their
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// own EFI driver, have them register their interface and consume that.
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#if defined(EXTRAMODULE)
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GRUB_FS_CALL(EXTRAMODULE, init)();
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#endif
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#if defined(EXTRAMODULE2)
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GRUB_FS_CALL(EXTRAMODULE2, init)();
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#endif
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InitializeListHead(&FsListHead);
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}
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VOID
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GrubDriverExit(VOID)
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{
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/* Unregister the relevant grub module */
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GRUB_FS_CALL(DRIVERNAME, fini)();
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#if defined(EXTRAMODULE)
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GRUB_FS_CALL(EXTRAMODULE, fini)();
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#endif
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#if defined(EXTRAMODULE2)
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GRUB_FS_CALL(EXTRAMODULE2, fini)();
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#endif
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}
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