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elilo/choosers/textmenu.c

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/*
* Copyright (C) 2001-2003 Hewlett-Packard Co.
* Contributed by Richard Hirst <rhirst@linuxcare.com>
*
* This file is part of the ELILO, the EFI Linux boot loader.
*
* ELILO 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, or (at your option)
* any later version.
*
* ELILO 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 ELILO; see the file COPYING. If not, write to the Free
* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Please check out the elilo.txt for complete documentation on how
* to use this program.
*/
#include <efi.h>
#include <efilib.h>
#include "elilo.h"
#define MAX_LABELS 16
#define MSGBUFLEN 4096
static UINT8 msgbuf[MSGBUFLEN];
static CHAR16 *labels[MAX_LABELS];
static CHAR16 *descriptions[MAX_LABELS];
static INTN nlabels;
static INTN CursorRow, CursorCol, PromptRow, PromptCol;
static INTN MenuRow, MenuCol, MenuWidth, MenuHeight;
static INTN DisplayParsed, CurrentAttr, PromptAttr;
static INTN PromptWidth, MenuHiAttr, MenuLoAttr;
static INTN PromptLen, MenuActive, MenuFirst;
static CHAR16 PromptBuf[CMDLINE_MAXLEN];
#define DEF_ATTR EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK)
#define ClearScreen() ST->ConOut->ClearScreen(ST->ConOut)
#define SetTextAttr(a) ST->ConOut->SetAttribute(ST->ConOut, a)
static INTN
tohex(INTN c)
{
if (c >= '0' && c <= '9')
return c - '0';
else if (c >= 'A' && c <= 'F')
return c = c - 'A' + 10;
else if (c >= 'a' && c <= 'f')
return c = c - 'a' + 10;
else
return 16;
}
static VOID
paint_msg(UINT8 *msg)
{
INTN c;
CursorCol = CursorRow = 0;
CurrentAttr = DEF_ATTR;
SetTextAttr(CurrentAttr);
ClearScreen();
while ((c = *msg++)) {
/* First map VGA to EFI line drawing chars */
if (c == 0xda) c = BOXDRAW_DOWN_RIGHT;
else if (c == 0xc4) c = BOXDRAW_HORIZONTAL;
else if (c == 0xbf) c = BOXDRAW_DOWN_LEFT;
else if (c == 0xb3) c = BOXDRAW_VERTICAL;
else if (c == 0xd9) c = BOXDRAW_UP_LEFT;
else if (c == 0xc0) c = BOXDRAW_UP_RIGHT;
else if (c == 0xb4) c = BOXDRAW_VERTICAL_LEFT;
else if (c == 0xc3) c = BOXDRAW_VERTICAL_RIGHT;
else if (c == 0x1e) c = GEOMETRICSHAPE_UP_TRIANGLE;
else if (c == 0x1f) c = GEOMETRICSHAPE_DOWN_TRIANGLE;
else if (c > 0x7f) c = '?';
/* Now print the printable chars, then process controls */
if (c >= ' ') {
Print(L"%c", c);
CursorCol++;
}
else {
switch (c) {
case '\r': /* Ignore CR */
break;
case '\n': /* LF treated as cr/lf */
CursorRow++;
CursorCol = 0;
Print(L"\n");
break;
case 0x0c: /* FF - Clear screen */
CursorCol = CursorRow = 0;
ClearScreen();
break;
case 0x0f: /* ^O - Attributes */
if (msg[0] && msg[1]) {
INTN bg = tohex(*msg++);
INTN fg = tohex(*msg++);
if (bg < 16 || fg < 16) {
CurrentAttr = EFI_TEXT_ATTR(fg, bg);
SetTextAttr(CurrentAttr);
}
}
break;
case 0x01: /* ^A - Prompt */
if (!DisplayParsed) {
if (!PromptRow) {
PromptRow = CursorRow;
PromptCol = CursorCol;
PromptAttr = CurrentAttr;
}
else if (!PromptWidth)
PromptWidth = CursorCol - PromptCol;
/* else bad syntax */
}
break;
case 0x02: /* ^B - Menu */
if (!DisplayParsed) {
if (!MenuRow) {
MenuRow = CursorRow;
MenuCol = CursorCol;
MenuLoAttr = CurrentAttr;
}
else if (!MenuWidth) {
MenuWidth = CursorCol - MenuCol;
MenuHeight = CursorRow - MenuRow + 1;
MenuHiAttr = CurrentAttr;
}
/* else bad syntax */
}
break;
default:
Print(L"?");
CursorCol++;
}
}
}
}
static VOID
paint_prompt(VOID)
{
INTN offset = PromptLen > PromptWidth - 1 ? PromptLen - PromptWidth + 1: 0;
SetTextAttr(PromptAttr);
PrintAt(PromptCol, PromptRow, L"%s%s", PromptBuf + offset, L" \b");
SetTextAttr(CurrentAttr);
}
static VOID
paint_menu(VOID)
{
INTN i, j;
for (i = 0; i < MenuHeight; i++) {
INTN attr = (i + MenuFirst == MenuActive) ? MenuHiAttr: MenuLoAttr;
CHAR16 description[80];
for (j = 0; j < MenuWidth; j++)
description[j] = ' ';
description[MenuWidth] = '\0';
if (i + MenuFirst < nlabels) {
for (j = 0; descriptions[i + MenuFirst][j] && j < MenuWidth; j++)
description[j+1] = descriptions[i + MenuFirst][j];
}
SetTextAttr(attr);
PrintAt(MenuCol, MenuRow + i, L"%-.*s", MenuWidth, description);
SetTextAttr(CurrentAttr);
}
paint_prompt();
}
static INTN
read_message_file(INTN msg, INT8 *buf, INTN max)
{
CHAR16 *filename;
fops_fd_t message_fd;
EFI_STATUS status;
INTN len = max;
if (msg > 10) return 0;
if ((filename = get_message_filename(msg)) == NULL) {
VERB_PRT(3, Print(L"no message file specified\n"));
return 0;
}
VERB_PRT(3, Print(L"opening message file %s\n", filename));
status = fops_open(filename, &message_fd);
if (EFI_ERROR(status)) {
VERB_PRT(3, Print(L"message file %s not found\n", filename));
return 0;
}
status = fops_read(message_fd, buf, &len);
if (EFI_ERROR(status)) {
VERB_PRT(3, Print(L"Error reading message file\n"));
len = 0;
}
fops_close(message_fd);
VERB_PRT(3, Print(L"done reading message file %s\n", filename));
return len;
}
/*
* interactively select a kernel image and options.
* The kernel can be an actual filename or a label in the config file
* Return:
* -1: if unsucessful
* 0: otherwise
*/
static INTN
select_kernel(CHAR16 *label, INTN lsize)
{
#define CHAR_CTRL_C (L'\003') /* Unicode CTRL-C */
#define CHAR_CTRL_D (L'\004') /* Unicode CTRL-D */
#define CHAR_CTRL_F (L'\006') /* Unicode CTRL-F */
#define CHAR_DEL (L'\177') /* Unicode DEL */
SIMPLE_INPUT_INTERFACE *ip = systab->ConIn;
EFI_INPUT_KEY key;
EFI_STATUS status;
INT8 first_time = 1;
INTN i;
INT8 fn = 0;
reprint:
i = read_message_file(0, msgbuf, MSGBUFLEN-1);
msgbuf[i] = 0;
paint_msg(msgbuf);
DisplayParsed = 1;
paint_menu();
CurrentAttr = PromptAttr;
SetTextAttr(CurrentAttr);
for (;;) {
while ((status=ip->ReadKeyStroke(ip, &key)) == EFI_NOT_READY);
if (EFI_ERROR(status)) {
SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
ClearScreen();
ERR_PRT((L"select_kernel readkey: %r", status));
return -1;
}
if (key.UnicodeChar == CHAR_CTRL_F) {
fn = 1;
continue;
}
if (fn) {
if (key.UnicodeChar >= '0' && key.UnicodeChar <= '9') {
if (key.UnicodeChar == '0')
key.ScanCode = SCAN_F10;
else
key.ScanCode = SCAN_F1 + key.UnicodeChar - '1';
key.UnicodeChar = 0;
}
fn = 0;
}
if (key.ScanCode == SCAN_UP) {
if (MenuActive)
MenuActive--;
else
continue;
if (MenuActive < MenuFirst)
MenuFirst = MenuActive;
paint_menu();
continue;
}
else if (key.ScanCode == SCAN_DOWN) {
if (MenuActive < nlabels - 1)
MenuActive++;
else
continue;
if (MenuActive >= MenuFirst + MenuHeight)
MenuFirst = MenuActive - MenuHeight + 1;
paint_menu();
continue;
}
else if (key.ScanCode >= SCAN_F1 && key.ScanCode <= SCAN_F10) {
i = read_message_file(key.ScanCode - SCAN_F1 + 1, msgbuf, MSGBUFLEN-1);
if (i) {
msgbuf[i] = 0;
paint_msg(msgbuf);
while ((status=ip->ReadKeyStroke(ip, &key)) == EFI_NOT_READY);
goto reprint;
}
}
switch (key.UnicodeChar) {
/* XXX Do we really want this in textmenual mode? */
case L'?':
Print(L"\n");
print_devices();
first_time = 0;
goto reprint;
case CHAR_BACKSPACE:
case CHAR_DEL:
if (PromptLen == 0) break;
PromptLen--;
PromptBuf[PromptLen] = 0;
if (PromptLen >= PromptWidth-2)
paint_prompt();
else
Print(L"\b \b");
break;
case CHAR_LINEFEED:
case CHAR_CARRIAGE_RETURN:
StrCpy(label, labels[MenuActive]);
SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
ClearScreen();
return 0;
default:
if ( key.UnicodeChar == CHAR_CTRL_D
|| key.UnicodeChar == CHAR_CTRL_C) {
SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
ClearScreen();
Print(L"\nGiving up then...\n");
return -1;
}
if (key.UnicodeChar == CHAR_NULL) break;
if (PromptLen > CMDLINE_MAXLEN-1) break;
if (key.UnicodeChar < ' ' || key.UnicodeChar > 0x7e)
key.UnicodeChar = '?';
PromptBuf[PromptLen++] = key.UnicodeChar;
PromptBuf[PromptLen] = 0;
/* Write the character out */
if (PromptLen >= PromptWidth-1)
paint_prompt();
else
Print(L"%c", key.UnicodeChar);
}
}
return 0;
}
INTN
textmenu_choose(CHAR16 **argv, INTN argc, INTN index, CHAR16 *kname, CHAR16 *cmdline)
{
# define BOOT_IMG_STR L"BOOT_IMAGE="
CHAR16 label[CMDLINE_MAXLEN];
CHAR16 initrd_name[CMDLINE_MAXLEN];
CHAR16 args[CMDLINE_MAXLEN];
CHAR16 devname[CMDLINE_MAXLEN];
CHAR16 dpath[FILENAME_MAXLEN];
CHAR16 *slash_pos, *colon_pos, *backslash_pos;
UINTN len;
INTN ret;
VOID *handle = NULL;
/* Clear all static variables, as we might be called more than once */
CursorRow = CursorCol = PromptRow = PromptCol = 0;
MenuRow = MenuCol = MenuWidth = MenuHeight = 0;
DisplayParsed = CurrentAttr = PromptAttr = 0;
PromptWidth = MenuHiAttr = MenuLoAttr = 0;
PromptLen = MenuActive = MenuFirst = 0;
PromptBuf[0] = CHAR_NULL;
nlabels = 0;
while (nlabels < MAX_LABELS && (handle = get_next_description(handle, labels + nlabels, descriptions + nlabels))) {
if (descriptions[nlabels][0] == 0)
descriptions[nlabels] = labels[nlabels];
nlabels++;
}
restart:
initrd_name[0] = kname[0] = cmdline[0] = args[0] = CHAR_NULL;
/* reset per image loader options */
Memset(&elilo_opt.img_opt, 0, sizeof(elilo_opt.img_opt));
if (elilo_opt.prompt) {
ret = select_kernel(label, sizeof(label));
if (ret == -1) return -1;
argc = argify(PromptBuf,sizeof(PromptBuf), argv);
index = 0;
}
/*
* check for alternate kernel image and params in EFI variable
*/
if (elilo_opt.alt_check && alternate_kernel(PromptBuf, sizeof(PromptBuf)) == 0) {
argc = argify(PromptBuf,sizeof(PromptBuf), argv);
index = 0;
label[0] = args[0] = initrd_name[0] = 0;
}
/*
* First search for matching label in the config file
* if options were specified on command line, they take
* precedence over the ones in the config file
*
* if no match is found, the args and initrd arguments may
* still be modified by global options in the config file.
*/
if (label[0])
ret = find_label(label, kname, args, initrd_name);
else
ret = find_label(argv[index], kname, args, initrd_name);
/*
* not found, so assume first argument is kernel name and
* not label name
*/
if (ret == -1) {
if (argv[index])
StrCpy(kname, argv[index]);
else
StrCpy(kname, elilo_opt.default_kernel);
}
/*
* no matter what happened for kname, if user specified
* additional options, they override the ones in the
* config file
*/
if (label[0])
index--;
if (argc > 1+index) {
/*StrCpy(args, argv[++index]);*/
while (++index < argc) {
StrCat(args, L" ");
StrCat(args, argv[index]);
}
}
/*
* if initrd specified on command line, it overrides
* the one defined in config file, if any
*/
if (elilo_opt.initrd[0] == CHAR_NULL && initrd_name[0] != CHAR_NULL) {
StrCpy(elilo_opt.initrd, initrd_name);
}
VERB_PRT(1, { Print(L"kernel is '%s'\n", kname);
Print(L"arguments are '%s'\n", args);
if (elilo_opt.initrd[0]) Print(L"initrd is '%s'\n", elilo_opt.initrd);
});
if (elilo_opt.prompt == 0) {
/* minimal printing */
Print(L"ELILO\n");
ret = wait_timeout(elilo_opt.delay);
if (ret != 0) {
elilo_opt.prompt = 1;
elilo_opt.timeout = ELILO_TIMEOUT_INFINITY;
goto restart;
}
}
/*
* add the device name, if not already specified,
* so that we know where we came from
*/
slash_pos = StrChr(kname, L'/');
backslash_pos = StrChr(kname, L'\\');
colon_pos = StrChr(kname, L':');
if (backslash_pos && backslash_pos < slash_pos) slash_pos = backslash_pos;
if (colon_pos == NULL || (slash_pos && (slash_pos < colon_pos))) {
StrCpy(devname, fops_bootdev_name());
StrCat(devname, L":");
/* the default path is always terminated with a separator */
if (kname[0] != L'/' && kname[0] != L'\\') {
fops_getdefault_path(dpath,FILENAME_MAXLEN);
StrCat(devname, dpath);
}
} else {
devname[0] = CHAR_NULL;
}
/*
* create final argument list to the kernel
*/
len = StrLen(BOOT_IMG_STR) /* BOOT_IMAGE= */
+StrLen(devname) /* device name */
+StrLen(kname) /* kernel name */
+1 /* space */
+StrLen(args); /* args length */
if (len >= CMDLINE_MAXLEN-1) {
SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
ClearScreen();
ERR_PRT((L" arguments list too long cannot fit BOOT_IMAGE\n"));
return -1;
}
StrCpy(cmdline, L"BOOT_IMAGE=");
StrCat(cmdline, devname);
StrCat(cmdline, kname);
StrCat(cmdline, L" ");
StrCat(cmdline, args);
VERB_PRT(3, Print(L"final command line is '%s'\n", cmdline));
return 0;
}
static INTN
textmenu_probe(EFI_HANDLE dev)
{
/* this chooser always works */
return 0;
}
chooser_t textmenu_chooser={
L"textmenu",
textmenu_probe,
textmenu_choose
};
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