Bug #1044 ยป boot0sio.patch
| boot0/Makefile 4 Jul 2008 19:39:23 -0000 | ||
|---|---|---|
|
# $FreeBSD: src/sys/boot/i386/boot0/Makefile,v 1.17 2002/09/17 01:48:54 peter Exp $
|
||
|
# $DragonFly: src/sys/boot/pc32/boot0/Makefile,v 1.5 2004/07/19 23:30:31 dillon Exp $
|
||
|
PROG= boot0
|
||
|
PROG?= boot0
|
||
|
NOMAN=
|
||
|
STRIP=
|
||
|
BINDIR?= /boot
|
||
| ... | ... | |
|
# The default set of flags compiled into boot0. This enables update (writing
|
||
|
# the modified boot0 back to disk after running so that the selection made is
|
||
|
# saved), packet mode (detect and use the BIOS EDD extensions if we try to
|
||
|
# boot past the 1024 cylinder liimt), and booting from all valid slices.
|
||
|
# boot past the 1024 cylinder limit), and booting from all valid slices.
|
||
|
BOOT_BOOT0_FLAGS?= 0xf
|
||
|
# The number of timer ticks to wait for a keypress before assuming the default
|
||
| ... | ... | |
|
# 0xb6 (182d) corresponds to 10 seconds.
|
||
|
BOOT_BOOT0_TICKS?= 0xb6
|
||
|
# Comm settings for boot0sio.
|
||
|
# Bit(s) Description
|
||
|
# 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
|
||
|
# 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
|
||
|
# 2 stop bits (set = 2, clear = 1)
|
||
|
# 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
|
||
|
.if !defined(BOOT_BOOT0_COMCONSOLE_SPEED)
|
||
|
BOOT_COMCONSOLE_SPEED?= 9600
|
||
|
.if ${BOOT_COMCONSOLE_SPEED} == 9600
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 4800
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "6 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 2400
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "5 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 1200
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "4 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 600
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "3 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 300
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "2 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 150
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "1 << 5 + 3"
|
||
|
.elif ${BOOT_COMCONSOLE_SPEED} == 110
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "0 << 5 + 3"
|
||
|
.else
|
||
|
BOOT_BOOT0_COMCONSOLE_SPEED= "7 << 5 + 3"
|
||
|
.endif
|
||
|
.endif
|
||
|
CFLAGS+=-DFLAGS=${BOOT_BOOT0_FLAGS} \
|
||
|
-DTICKS=${BOOT_BOOT0_TICKS} \
|
||
|
-DCOMSPEED=${BOOT_BOOT0_COMCONSOLE_SPEED}
|
||
|
# pull BOOT0_ORIGIN out of bootasm.h
|
||
|
#
|
||
|
#
|
||
|
boot0: boot0.o bootasmdef.nx
|
||
|
${PROG}: boot0.o bootasmdef.nx
|
||
|
@echo "boot0 origin set to `${.OBJDIR}/bootasmdef.nx BOOT0_ORIGIN`"
|
||
|
${LD} -N -e start -Ttext `${.OBJDIR}/bootasmdef.nx BOOT0_ORIGIN` -o boot0.out boot0.o
|
||
|
objcopy -S -O binary boot0.out ${.TARGET}
|
||
|
boot0.o: boot0.S
|
||
|
${CC} -c -DFLAGS=${BOOT_BOOT0_FLAGS} -DTICKS=${BOOT_BOOT0_TICKS} \
|
||
|
${AFLAGS} ${.IMPSRC} -o ${.TARGET}
|
||
|
${CC} -c ${CFLAGS} ${AFLAGS} ${.IMPSRC} -o ${.TARGET}
|
||
|
CLEANFILES+= boot0.out boot0.o bootasmdef.nx
|
||
| boot0/boot0.S 4 Jul 2008 19:26:12 -0000 | ||
|---|---|---|
|
#include "../bootasm.h"
|
||
|
#ifdef SIO
|
||
|
/* ... using a serial console on COM1. */
|
||
|
#endif
|
||
|
/*
|
||
|
* A 512-byte boot manager.
|
||
|
*/
|
||
| ... | ... | |
|
.set KEY_F1,0x3b # F1 key scan code
|
||
|
.set KEY_1,0x02 # #1 key scan code
|
||
|
.set ASCII_BEL,0x07 # ASCII code for <BEL>
|
||
|
.set ASCII_CR,0x0D # ASCII code for <CR>
|
||
|
/*
|
||
|
* Addresses in the sector of embedded data values. Accessed
|
||
|
* with negative offsets from the end of the relocated sector
|
||
| ... | ... | |
|
pushw $main # Jump to relocated code
|
||
|
retw
|
||
|
main:
|
||
|
#if defined(SIO) && COMSPEED != 0
|
||
|
/*
|
||
|
* Initialize the serial port.
|
||
|
* bioscom preserves the driver number in DX.
|
||
|
*/
|
||
|
movw $COMSPEED,%ax # defined by Makefile
|
||
|
callw bioscom
|
||
|
#endif
|
||
|
/*
|
||
|
* Check what flags were loaded with us, specifically, Use a
|
||
|
* predefined Drive. If what the bios gives us is bad, use
|
||
|
* the '0' in the block instead, as well.
|
||
|
*/
|
||
|
main: testb $0x20,_FLAGS(%bp) # Set number drive?
|
||
|
testb $0x20,_FLAGS(%bp) # Set number drive?
|
||
|
jnz main.1 # Yes
|
||
|
testb %dl,%dl # Drive number valid?
|
||
|
js main.2 # Possibly (0x80 set)
|
||
|
main.1: movb _SETDRV(%bp),%dl # Drive number to use
|
||
|
/*
|
||
| ... | ... | |
|
* Busy loop, looking for keystrokes but
|
||
|
* keeping one eye on the time.
|
||
|
*/
|
||
|
main.8: movb $0x1,%ah # BIOS: Check
|
||
|
main.8:
|
||
|
#ifndef SIO
|
||
|
movb $0x1,%ah # BIOS: Check
|
||
|
int $0x16 # for keypress
|
||
|
jnz main.11 # Have one
|
||
|
#else /* SIO */
|
||
|
movb $0x03,%ah # BIOS: Read COM
|
||
|
call bioscom
|
||
|
testb $0x01,%ah # Check line status
|
||
|
jnz main.11 # (bit 1 indicates input)
|
||
|
#endif /* SIO */
|
||
|
xorb %ah,%ah # BIOS: Get
|
||
|
int $0x1a # system time
|
||
|
cmpw %di,%dx # Timeout?
|
||
| ... | ... | |
|
* until either the timeout occurs or the user hits a good
|
||
|
* key.
|
||
|
*/
|
||
|
main.10: movb $0x7,%al # Signal
|
||
|
main.10: movb $ASCII_BEL,%al # Signal
|
||
|
callw putchr # error
|
||
|
/*
|
||
|
* Get the keystroke.
|
||
|
*/
|
||
|
main.11: xorb %ah,%ah # BIOS: Get
|
||
|
main.11:
|
||
|
#ifndef SIO
|
||
|
xorb %ah,%ah # BIOS: Get
|
||
|
int $0x16 # keypress
|
||
|
movb %ah,%al # Scan code
|
||
|
#else
|
||
|
movb $0x02,%ah # BIOS: Receive
|
||
|
call bioscom
|
||
|
#endif
|
||
|
/*
|
||
|
* If it's CR act as if timed out.
|
||
|
*/
|
||
|
#ifndef SIO
|
||
|
cmpb $KEY_ENTER,%al # Enter pressed?
|
||
|
#else
|
||
|
cmpb $ASCII_CR,%al # Enter pressed?
|
||
|
#endif
|
||
|
je main.9 # Yes
|
||
|
/*
|
||
|
* Otherwise check if legal
|
||
|
* If not ask again.
|
||
|
*/
|
||
|
#ifndef SIO
|
||
|
subb $KEY_F1,%al # Less F1 scan code
|
||
|
cmpb $0x4,%al # F1..F5?
|
||
|
jna main.12 # Yes
|
||
|
subb $(KEY_1 - KEY_F1),%al # Less #1 scan code
|
||
|
#else
|
||
|
subb $'1',%al # Less '1' ascii character
|
||
|
#endif
|
||
|
cmpb $0x4,%al # #1..#5?
|
||
|
ja main.10 # No
|
||
| ... | ... | |
|
/*
|
||
|
* Display routines
|
||
|
*/
|
||
|
putkey: movb $'F',%al # Display
|
||
|
putkey:
|
||
|
#ifndef SIO
|
||
|
movb $'F',%al # Display
|
||
|
callw putchr # 'F'
|
||
|
#endif
|
||
|
movb $'1',%al # Prepare
|
||
|
addb %dl,%al # digit
|
||
|
jmp putstr.1 # Display the rest
|
||
| ... | ... | |
|
jmp putstr # Continue
|
||
|
putstr.2: andb $~0x80,%al # Clear MSB
|
||
|
putchr: pusha # Save
|
||
|
#ifndef SIO
|
||
|
putchr:
|
||
|
pusha # Save
|
||
|
movw $0x7,%bx # Page:attribute
|
||
|
movb $0xe,%ah # BIOS: Display
|
||
|
int $0x10 # character
|
||
|
popa # Restore
|
||
|
retw # To caller
|
||
|
#else /* SIO */
|
||
|
putchr:
|
||
|
movb $0x01,%ah # BIOS: Send
|
||
|
bioscom:
|
||
|
pusha # Save
|
||
|
xorw %dx,%dx # Use COM1
|
||
|
int $0x14 # Character
|
||
|
popa # Restore
|
||
|
retw # To caller
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
* One-sector disk I/O routine
|
||
|
-- /dev/null 2008-07-04 18:33:36 +0000
|
||
|
++ boot0sio/Makefile 2008-07-04 19:33:33 +0000
|
||
| ... | ... | |
|
# $FreeBSD: src/sys/boot/i386/boot0sio/Makefile,v 1.4 2004/04/28 21:31:20 ru Exp $
|
||
|
# $DragonFly:$
|
||
|
.PATH: ${.CURDIR}/../boot0
|
||
|
PROG= boot0sio
|
||
|
CFLAGS+= -DSIO
|
||
|
.include "${.CURDIR}/../boot0/Makefile"
|
||