diff options
author | Tom Gundersen <teg@jklm.no> | 2015-02-17 20:12:50 +0100 |
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committer | Tom Gundersen <teg@jklm.no> | 2015-02-18 15:23:23 +0100 |
commit | e7dd673d1e0acfe5420599588c559fd85a3a9e8f (patch) | |
tree | ecfef02be389745e295322e6a81df481869636c7 /src/boot/efi/console.c | |
parent | 8d4efa540a88b19a475452d8ccc3c9824849fa86 (diff) |
gummiboot/sd-boot/systemd-boot: rename galore
What used to be gummiboot, was renamed sd-boot when it was merged into
systemd. Let's try to be a bit more consistent with the rest of systemd
and rename it again as follows:
The EFI bootloader is now called 'systemd-bootx64.efi', and its sources are in
'src/boot/efi/'. The drop-in directory where bootctl will find EFI loaders
is now /usr/lib/systemd/boot/efi/.
Diffstat (limited to 'src/boot/efi/console.c')
-rw-r--r-- | src/boot/efi/console.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/boot/efi/console.c b/src/boot/efi/console.c new file mode 100644 index 0000000000..6206c80317 --- /dev/null +++ b/src/boot/efi/console.c @@ -0,0 +1,141 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * Copyright (C) 2012-2013 Kay Sievers <kay@vrfy.org> + * Copyright (C) 2012 Harald Hoyer <harald@redhat.com> + */ + +#include <efi.h> +#include <efilib.h> + +#include "util.h" +#include "console.h" + +#define EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID \ + { 0xdd9e7534, 0x7762, 0x4698, { 0x8c, 0x14, 0xf5, 0x85, 0x17, 0xa6, 0x25, 0xaa } } + +struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL; + +typedef EFI_STATUS (EFIAPI *EFI_INPUT_RESET_EX)( + struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This; + BOOLEAN ExtendedVerification; +); + +typedef UINT8 EFI_KEY_TOGGLE_STATE; + +typedef struct { + UINT32 KeyShiftState; + EFI_KEY_TOGGLE_STATE KeyToggleState; +} EFI_KEY_STATE; + +typedef struct { + EFI_INPUT_KEY Key; + EFI_KEY_STATE KeyState; +} EFI_KEY_DATA; + +typedef EFI_STATUS (EFIAPI *EFI_INPUT_READ_KEY_EX)( + struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This; + EFI_KEY_DATA *KeyData; +); + +typedef EFI_STATUS (EFIAPI *EFI_SET_STATE)( + struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This; + EFI_KEY_TOGGLE_STATE *KeyToggleState; +); + +typedef EFI_STATUS (EFIAPI *EFI_KEY_NOTIFY_FUNCTION)( + EFI_KEY_DATA *KeyData; +); + +typedef EFI_STATUS (EFIAPI *EFI_REGISTER_KEYSTROKE_NOTIFY)( + struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This; + EFI_KEY_DATA KeyData; + EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction; + VOID **NotifyHandle; +); + +typedef EFI_STATUS (EFIAPI *EFI_UNREGISTER_KEYSTROKE_NOTIFY)( + struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This; + VOID *NotificationHandle; +); + +typedef struct _EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL { + EFI_INPUT_RESET_EX Reset; + EFI_INPUT_READ_KEY_EX ReadKeyStrokeEx; + EFI_EVENT WaitForKeyEx; + EFI_SET_STATE SetState; + EFI_REGISTER_KEYSTROKE_NOTIFY RegisterKeyNotify; + EFI_UNREGISTER_KEYSTROKE_NOTIFY UnregisterKeyNotify; +} EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL; + +EFI_STATUS console_key_read(UINT64 *key, BOOLEAN wait) { + EFI_GUID EfiSimpleTextInputExProtocolGuid = EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID; + static EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *TextInputEx; + static BOOLEAN checked; + UINTN index; + EFI_INPUT_KEY k; + EFI_STATUS err; + + if (!checked) { + err = LibLocateProtocol(&EfiSimpleTextInputExProtocolGuid, (VOID **)&TextInputEx); + if (EFI_ERROR(err)) + TextInputEx = NULL; + + checked = TRUE; + } + + /* wait until key is pressed */ + if (wait) { + if (TextInputEx) + uefi_call_wrapper(BS->WaitForEvent, 3, 1, &TextInputEx->WaitForKeyEx, &index); + else + uefi_call_wrapper(BS->WaitForEvent, 3, 1, &ST->ConIn->WaitForKey, &index); + } + + if (TextInputEx) { + EFI_KEY_DATA keydata; + UINT64 keypress; + + err = uefi_call_wrapper(TextInputEx->ReadKeyStrokeEx, 2, TextInputEx, &keydata); + if (!EFI_ERROR(err)) { + UINT32 shift = 0; + + /* do not distinguish between left and right keys */ + if (keydata.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) { + if (keydata.KeyState.KeyShiftState & (EFI_RIGHT_CONTROL_PRESSED|EFI_LEFT_CONTROL_PRESSED)) + shift |= EFI_CONTROL_PRESSED; + if (keydata.KeyState.KeyShiftState & (EFI_RIGHT_ALT_PRESSED|EFI_LEFT_ALT_PRESSED)) + shift |= EFI_ALT_PRESSED; + }; + + /* 32 bit modifier keys + 16 bit scan code + 16 bit unicode */ + keypress = KEYPRESS(shift, keydata.Key.ScanCode, keydata.Key.UnicodeChar); + if (keypress > 0) { + *key = keypress; + return 0; + } + } + } + + /* fallback for firmware which does not support SimpleTextInputExProtocol + * + * This is also called in case ReadKeyStrokeEx did not return a key, because + * some broken firmwares offer SimpleTextInputExProtocol, but never acually + * handle any key. */ + err = uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, &k); + if (EFI_ERROR(err)) + return err; + + *key = KEYPRESS(0, k.ScanCode, k.UnicodeChar); + return 0; +} |