В Tue, 06 Aug 2013 10:35:30 +0200 Pawel Wojtalczyk <e...@wp.pl> пишет:
> Hello, > > I run GRUB2 as 64-bit EFI application and I use gfxterm and serial as > output. > > I would like to edit commands before boot by type 'e' command. Then I > would like to boot by press ctrl-x, but unfortunately the boot does not > appears. > Does F10 work? > The reason is that in AMI and Phoenix BIOSes when ctrl key is pressed > then EFI_SIMPLE_TEXT_INPUT_PROTOCOL protocol returns VT100 style > encoding of pressed unicode character ( > http://www.vt100.net/docs/vt100-ug/table3-5.html). > > I tried to use EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL to get the pressed key > modifier (ctrl, alt, etc), but in case when serial console redirection > enabled in Phoenix BIOS, none characters are received via serial with > EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL(with AMI BIOS characters are received > in VT100 encoding style). > > So maybe we can do another way. Maybe we can explicitly set key modifier > (as in grub_terminfo_getkey() with > http://wiki.phoenix.com/wiki/index.php/Unicode_Control_Characters > restrictions) as following: > > --- grub.orig/grub-core/term/efi/console.c 2013-07-31 > 07:50:52.000000000 +0200 > +++ grub/grub-core/term/efi/console.c 2013-08-06 10:28:26.117499386 +0200 > @@ -125,7 +125,12 @@ > return GRUB_TERM_NO_KEY; > > if (key.scan_code == 0) > - return key.unicode_char; > +#if defined (__i386__) || defined (__x86_64__) > + if (key.unicode_char < 0x20 && key.unicode_char != 0 && > key.unicode_char != '\t' && key.unicode_char != '\b' && key.unicode_char > != '\n' && key.unicode_char != '\r') > + return GRUB_TERM_CTRL | (key.unicode_char - 1 + 'a'); > + else > +#endif /* defined (__i386__) || defined (__x86_64__) */ > + return key.unicode_char; > else if (key.scan_code < ARRAY_SIZE (efi_codes)) > return efi_codes[key.scan_code]; > > In some remote systems EFI serial redirection must be enabled and thus > we cannot use serial (as termianl_input) module in GRUB2 and in such > case it would be good to allow add support for ctrl-x/ctrl-c under GRUB2 > via serial console redirection enabled in EFI and attached USB keyboard. > > Regrads > Pawel Wojtalczyk _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
