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[bios] Add bin-x86_64-pcbios build platform

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Move most arch/i386 files to arch/x86, and adjust the contents of the
Makefiles and the include/bits/*.h headers to reflect the new
locations.

This patch makes no substantive code changes, as can be seen using a
rename-aware diff (e.g. "git show -M5").

This patch does not make the pcbios platform functional for x86_64; it
merely allows it to compile without errors.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-02-16 15:19:01 +00:00
parent 43515f9f1a
commit f468f12b1e
155 changed files with 198 additions and 240 deletions
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70
src/arch/x86/interface/pcbios/bios_timer.c Normal file
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/*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** @file
*
* BIOS timer
*
*/
#include <ipxe/timer.h>
#include <realmode.h>
#include <bios.h>
/**
* Get current system time in ticks
*
* @ret ticks Current time, in ticks
*
* Use direct memory access to BIOS variables, longword 0040:006C
* (ticks today) and byte 0040:0070 (midnight crossover flag) instead
* of calling timeofday BIOS interrupt.
*/
static unsigned long bios_currticks ( void ) {
static int days = 0;
uint32_t ticks;
uint8_t midnight;
/* Re-enable interrupts so that the timer interrupt can occur */
__asm__ __volatile__ ( "sti\n\t"
"nop\n\t"
"nop\n\t"
"cli\n\t" );
get_real ( ticks, BDA_SEG, 0x006c );
get_real ( midnight, BDA_SEG, 0x0070 );
if ( midnight ) {
midnight = 0;
put_real ( midnight, BDA_SEG, 0x0070 );
days += 0x1800b0;
}
return ( days + ticks );
}
PROVIDE_TIMER_INLINE ( pcbios, udelay );
PROVIDE_TIMER ( pcbios, currticks, bios_currticks );
PROVIDE_TIMER_INLINE ( pcbios, ticks_per_sec );