diff options
Diffstat (limited to 'gpxe/src/interface/efi/efi_console.c')
| -rw-r--r-- | gpxe/src/interface/efi/efi_console.c | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/gpxe/src/interface/efi/efi_console.c b/gpxe/src/interface/efi/efi_console.c deleted file mode 100644 index 04af28a2..00000000 --- a/gpxe/src/interface/efi/efi_console.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or 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 - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -#include <stddef.h> -#include <assert.h> -#include <gpxe/efi/efi.h> -#include <gpxe/ansiesc.h> -#include <console.h> - -#define ATTR_BOLD 0x08 - -#define ATTR_FCOL_MASK 0x07 -#define ATTR_FCOL_BLACK 0x00 -#define ATTR_FCOL_BLUE 0x01 -#define ATTR_FCOL_GREEN 0x02 -#define ATTR_FCOL_CYAN 0x03 -#define ATTR_FCOL_RED 0x04 -#define ATTR_FCOL_MAGENTA 0x05 -#define ATTR_FCOL_YELLOW 0x06 -#define ATTR_FCOL_WHITE 0x07 - -#define ATTR_BCOL_MASK 0x70 -#define ATTR_BCOL_BLACK 0x00 -#define ATTR_BCOL_BLUE 0x10 -#define ATTR_BCOL_GREEN 0x20 -#define ATTR_BCOL_CYAN 0x30 -#define ATTR_BCOL_RED 0x40 -#define ATTR_BCOL_MAGENTA 0x50 -#define ATTR_BCOL_YELLOW 0x60 -#define ATTR_BCOL_WHITE 0x70 - -#define ATTR_DEFAULT ATTR_FCOL_WHITE - -/** Current character attribute */ -static unsigned int efi_attr = ATTR_DEFAULT; - -/** - * Handle ANSI CUP (cursor position) - * - * @v count Parameter count - * @v params[0] Row (1 is top) - * @v params[1] Column (1 is left) - */ -static void efi_handle_cup ( unsigned int count __unused, int params[] ) { - EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *conout = efi_systab->ConOut; - int cx = ( params[1] - 1 ); - int cy = ( params[0] - 1 ); - - if ( cx < 0 ) - cx = 0; - if ( cy < 0 ) - cy = 0; - - conout->SetCursorPosition ( conout, cx, cy ); -} - -/** - * Handle ANSI ED (erase in page) - * - * @v count Parameter count - * @v params[0] Region to erase - */ -static void efi_handle_ed ( unsigned int count __unused, - int params[] __unused ) { - EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *conout = efi_systab->ConOut; - - /* We assume that we always clear the whole screen */ - assert ( params[0] == ANSIESC_ED_ALL ); - - conout->ClearScreen ( conout ); -} - -/** - * Handle ANSI SGR (set graphics rendition) - * - * @v count Parameter count - * @v params List of graphic rendition aspects - */ -static void efi_handle_sgr ( unsigned int count, int params[] ) { - EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *conout = efi_systab->ConOut; - static const uint8_t efi_attr_fcols[10] = { - ATTR_FCOL_BLACK, ATTR_FCOL_RED, ATTR_FCOL_GREEN, - ATTR_FCOL_YELLOW, ATTR_FCOL_BLUE, ATTR_FCOL_MAGENTA, - ATTR_FCOL_CYAN, ATTR_FCOL_WHITE, - ATTR_FCOL_WHITE, ATTR_FCOL_WHITE /* defaults */ - }; - static const uint8_t efi_attr_bcols[10] = { - ATTR_BCOL_BLACK, ATTR_BCOL_RED, ATTR_BCOL_GREEN, - ATTR_BCOL_YELLOW, ATTR_BCOL_BLUE, ATTR_BCOL_MAGENTA, - ATTR_BCOL_CYAN, ATTR_BCOL_WHITE, - ATTR_BCOL_BLACK, ATTR_BCOL_BLACK /* defaults */ - }; - unsigned int i; - int aspect; - - for ( i = 0 ; i < count ; i++ ) { - aspect = params[i]; - if ( aspect == 0 ) { - efi_attr = ATTR_DEFAULT; - } else if ( aspect == 1 ) { - efi_attr |= ATTR_BOLD; - } else if ( aspect == 22 ) { - efi_attr &= ~ATTR_BOLD; - } else if ( ( aspect >= 30 ) && ( aspect <= 39 ) ) { - efi_attr &= ~ATTR_FCOL_MASK; - efi_attr |= efi_attr_fcols[ aspect - 30 ]; - } else if ( ( aspect >= 40 ) && ( aspect <= 49 ) ) { - efi_attr &= ~ATTR_BCOL_MASK; - efi_attr |= efi_attr_bcols[ aspect - 40 ]; - } - } - - conout->SetAttribute ( conout, efi_attr ); -} - -/** EFI console ANSI escape sequence handlers */ -static struct ansiesc_handler efi_ansiesc_handlers[] = { - { ANSIESC_CUP, efi_handle_cup }, - { ANSIESC_ED, efi_handle_ed }, - { ANSIESC_SGR, efi_handle_sgr }, - { 0, NULL } -}; - -/** EFI console ANSI escape sequence context */ -static struct ansiesc_context efi_ansiesc_ctx = { - .handlers = efi_ansiesc_handlers, -}; - -/** - * Print a character to EFI console - * - * @v character Character to be printed - */ -static void efi_putchar ( int character ) { - EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *conout = efi_systab->ConOut; - wchar_t wstr[] = { character, 0 }; - - /* Intercept ANSI escape sequences */ - character = ansiesc_process ( &efi_ansiesc_ctx, character ); - if ( character < 0 ) - return; - - conout->OutputString ( conout, wstr ); -} - -/** - * Pointer to current ANSI output sequence - * - * While we are in the middle of returning an ANSI sequence for a - * special key, this will point to the next character to return. When - * not in the middle of such a sequence, this will point to a NUL - * (note: not "will be NULL"). - */ -static const char *ansi_input = ""; - -/** Mapping from EFI scan codes to ANSI escape sequences */ -static const char *ansi_sequences[] = { - [SCAN_UP] = "[A", - [SCAN_DOWN] = "[B", - [SCAN_RIGHT] = "[C", - [SCAN_LEFT] = "[D", - [SCAN_HOME] = "[H", - [SCAN_END] = "[F", - [SCAN_INSERT] = "[2~", - /* EFI translates an incoming backspace via the serial console - * into a SCAN_DELETE. There's not much we can do about this. - */ - [SCAN_DELETE] = "[3~", - [SCAN_PAGE_UP] = "[5~", - [SCAN_PAGE_DOWN] = "[6~", - /* EFI translates some (but not all) incoming escape sequences - * via the serial console into equivalent scancodes. When it - * doesn't recognise a sequence, it helpfully(!) translates - * the initial ESC and passes the remainder through verbatim. - * Treating SCAN_ESC as equivalent to an empty escape sequence - * works around this bug. - */ - [SCAN_ESC] = "", -}; - -/** - * Get ANSI escape sequence corresponding to EFI scancode - * - * @v scancode EFI scancode - * @ret ansi_seq ANSI escape sequence, if any, otherwise NULL - */ -static const char * scancode_to_ansi_seq ( unsigned int scancode ) { - if ( scancode < ( sizeof ( ansi_sequences ) / - sizeof ( ansi_sequences[0] ) ) ) { - return ansi_sequences[scancode]; - } - return NULL; -} - -/** - * Get character from EFI console - * - * @ret character Character read from console - */ -static int efi_getchar ( void ) { - EFI_SIMPLE_TEXT_INPUT_PROTOCOL *conin = efi_systab->ConIn; - const char *ansi_seq; - EFI_INPUT_KEY key; - EFI_STATUS efirc; - - /* If we are mid-sequence, pass out the next byte */ - if ( *ansi_input ) - return *(ansi_input++); - - /* Read key from real EFI console */ - if ( ( efirc = conin->ReadKeyStroke ( conin, &key ) ) != 0 ) { - DBG ( "EFI could not read keystroke: %s\n", - efi_strerror ( efirc ) ); - return 0; - } - DBG2 ( "EFI read key stroke with unicode %04x scancode %04x\n", - key.UnicodeChar, key.ScanCode ); - - /* If key has a Unicode representation, return it */ - if ( key.UnicodeChar ) - return key.UnicodeChar; - - /* Otherwise, check for a special key that we know about */ - if ( ( ansi_seq = scancode_to_ansi_seq ( key.ScanCode ) ) ) { - /* Start of escape sequence: return ESC (0x1b) */ - ansi_input = ansi_seq; - return 0x1b; - } - - return 0; -} - -/** - * Check for character ready to read from EFI console - * - * @ret True Character available to read - * @ret False No character available to read - */ -static int efi_iskey ( void ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - EFI_SIMPLE_TEXT_INPUT_PROTOCOL *conin = efi_systab->ConIn; - EFI_STATUS efirc; - - /* If we are mid-sequence, we are always ready */ - if ( *ansi_input ) - return 1; - - /* Check to see if the WaitForKey event has fired */ - if ( ( efirc = bs->CheckEvent ( conin->WaitForKey ) ) == 0 ) - return 1; - - return 0; -} - -struct console_driver efi_console __console_driver = { - .putchar = efi_putchar, - .getchar = efi_getchar, - .iskey = efi_iskey, -}; |