"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> writes: Hi,
> i have a nice question for you :) > in many acer laptops there is a second poweron button which is called "arcade > button". > this is a normal power on button, as you can see: > > # more /proc/bus/input/devices > I: Bus=0019 Vendor=0000 Product=0002 Version=0000 > N: Name="Power Button (FF)" > P: Phys=button_power/button/input0 > S: Sysfs=/class/input/input0 > U: Uniq= > H: Handlers=kbd event0 > B: EV=3 > B: KEY=100000 0 0 0 > > ... > > I: Bus=0019 Vendor=0000 Product=0001 Version=0000 > N: Name="Power Button (CM)" > P: Phys=PNP0C0C/button/input0 > S: Sysfs=/class/input/input2 > U: Uniq= > H: Handlers=kbd event2 > B: EV=3 > B: KEY=100000 0 0 0 > > when laptop is new (read "when you haven't overridden window's bootloader"), > pressing the normal power on button causes a normal boot sequence, but > pressing the arcade button causes a different boot sequence. > > i don't really want to restore windows boot loader, so: is there a way to > replicate this job with grub or grub2? > > for any further info please ask. Is this information stored somehow? So how can the bootloader determine what is done? In that case you can use scripting in GRUB 2 to make use of this information. It can't be done yet, but surely GRUB 2 can be modified to use this. -- Marco thanks for you answer, marco follows a more deep description of the system the original system uses a modified grub 0.93 chainloaded by ntldr. the modifications of grub are released, but i can't replicate them on grub 0.97. in short, in stage2 is addedd a function called console_getshift() which is this (following lines added in stage2/asm.S) : /* 2004-12-01 CyberLink Corp. <http://www.gocyberlink.com> */ /* * int console_getshift (void) * BIOS call "INT 16H Function 02H" to shift flags from keyboard * Call with %ah = 0x2 * Return: %ah = destroyed by many BIOSes * %al = shift flags */ ENTRY(console_getshift) push %ebp call EXT_C(prot_to_real) .code16 movb $0x2, %ah int $0x16 movb %al, %dl /* real_to_prot uses %eax */ DATA32 call EXT_C(real_to_prot) .code32 movb %dl, %al and $0xf, %eax pop %ebp ret then, a few references are added in other files: stage2/term.h : #ifndef STAGE1_5 /* 2004-12-01 CyberLink Corp. <http://www.gocyberlink.com> */ int console_getshift (void); stage2/stage2.c : /* If SHOW_MENU is false, don't display the menu until ESC is pressed. */ if (! show_menu) { /* 2004-12-01 CyberLink Corp. <http://www.gocyberlink.com> */ #ifndef GRUB_UTIL if(console_getshift() & 0x3) ++entryno; #endif goto boot_entry; stage2/asm.S : while compiling grub 0.97 with these patches added, there are no problems, but it seems that GRUB_UTIL is always defined, so the new code is never compiled. trying to remove the ifndef directive, compilation fails with a "no console_getshift() defined" error. can anybody help me with this? ------------------------------------------------------ Leggi GRATIS le tue mail con il telefonino i-modeĀ di Wind http://i-mode.wind.it/ _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
