Sync these two files.
This commit is contained in:
David E. O'Brien
parent
0911e271e3
commit
b5a8abc730
@ -16,7 +16,7 @@
|
||||
|
||||
# $FreeBSD$
|
||||
|
||||
# A 512-byte boot manager which uses a 9600 baud serial console on COM1.
|
||||
# A 512-byte boot manager which uses a serial console on COM1.
|
||||
|
||||
.set NHRDRV,0x475 # Number of hard drives
|
||||
.set ORIGIN,0x600 # Execution address
|
||||
@ -26,13 +26,14 @@
|
||||
.set PRT_OFF,0x1be # Partition table
|
||||
|
||||
.set TBL0SZ,0x3 # Table 0 size
|
||||
.set TBL1SZ,0xc # Table 1 size
|
||||
.set TBL1SZ,0xb # Table 1 size
|
||||
|
||||
.set MAGIC,0xaa55 # Magic: bootable
|
||||
.set B0MAGIC,0xbb66 # Identification
|
||||
|
||||
.set KEY_ENTER,0x1c # Enter key scan code
|
||||
.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>
|
||||
@ -64,7 +65,7 @@ start: cld # String ops inc
|
||||
movw %ax,%ds # data
|
||||
movw %ax,%ss # Set up
|
||||
movw $LOAD,%sp # stack
|
||||
|
||||
|
||||
#
|
||||
# Copy this code to the address it was linked for
|
||||
#
|
||||
@ -95,6 +96,7 @@ start: cld # String ops inc
|
||||
main: pushw %dx # Save
|
||||
xorw %dx,%dx # Port: COM1
|
||||
movb $0xE3,%al # 9600 8-N-1
|
||||
|
||||
movb $0x00,%ah # BIOS: Set COM Port
|
||||
int $0x14 # Parameters
|
||||
popw %dx # Restore
|
||||
@ -157,13 +159,13 @@ main.3: movb %ch,-0x4(%bx) # Zero active flag (ch == 0)
|
||||
main.4: movb (%di),%cl # Partition
|
||||
addw %cx,%di # description
|
||||
callw putx # Display it
|
||||
main.5: incw %dx # Next item
|
||||
main.5: incw %dx # Next item
|
||||
addb $0x10,%bl # Next entry
|
||||
jnc main.3 # Till done
|
||||
#
|
||||
# Passed a 256 byte boundary..
|
||||
# table is finished.
|
||||
# Add one to the drive number and check it is valid,
|
||||
# Add one to the drive number and check it is valid,
|
||||
#
|
||||
popw %ax # Drive number
|
||||
subb $0x80-0x1,%al # Does next
|
||||
@ -191,13 +193,13 @@ main.6: addb $'0'|0x80,%al # Save next
|
||||
callw putx # item
|
||||
#
|
||||
# Now that we've printed the drive (if we needed to), display a prompt.
|
||||
# Get ready for the input byte noting the time.
|
||||
#
|
||||
main.7: movw $prompt,%si # Display
|
||||
callw putstr # prompt
|
||||
movb _OPT(%bp),%dl # Display
|
||||
decw %si # default
|
||||
callw putkey # key
|
||||
|
||||
main.7_1:
|
||||
xorb %ah,%ah # BIOS: Get
|
||||
int $0x1a # system time
|
||||
@ -205,7 +207,8 @@ main.7_1:
|
||||
addw _TICKS(%bp),%si # timeout
|
||||
|
||||
#
|
||||
# Check for a character on the serial port.
|
||||
# Busy loop, checking for a character on the serial port, but
|
||||
# keeping one eye on the time.
|
||||
#
|
||||
|
||||
main.8: xorw %dx,%dx # Use COM1
|
||||
@ -227,7 +230,7 @@ main.9: movb _OPT(%bp),%al # Load default
|
||||
#
|
||||
# User's last try was bad, beep in displeasure.
|
||||
# Since nothing was printed, just continue on as if the user
|
||||
# hadn't done anything. This gives the effect of the user getting a beep
|
||||
# hadn't done anything. This gives the effect of the user getting a beep
|
||||
# for all bad keystrokes but no action until either the timeout
|
||||
# occurs or the user hits a good key.
|
||||
#
|
||||
@ -236,11 +239,12 @@ main.10: movb $ASCII_BEL,%al # Signal
|
||||
jmp main.7_1 # Go back
|
||||
#
|
||||
# Check the character we just got on the serial port.
|
||||
# If it's CR act as if timed out.
|
||||
#
|
||||
main.11: movb $0x02,%ah # BIOS: Receive
|
||||
int $0x14 # COM Byte
|
||||
|
||||
#
|
||||
# If it's CR act as if timed out.
|
||||
#
|
||||
cmpb $ASCII_CR,%al # Enter pressed?
|
||||
je main.9 # Yes
|
||||
#
|
||||
@ -248,7 +252,7 @@ main.11: movb $0x02,%ah # BIOS: Receive
|
||||
# If not ask again.
|
||||
#
|
||||
subb $ASCII_1,%al # Less '1' ascii character
|
||||
cmpb $0x4,%al # 1..5?
|
||||
cmpb $0x4,%al # #1..#5?
|
||||
ja main.10 # No
|
||||
#
|
||||
# We have a selection.
|
||||
@ -267,7 +271,7 @@ main.12: cbtw # Option
|
||||
movw $FAKE,%si # Partition for write
|
||||
movb (%si),%dl # Drive number
|
||||
movw %si,%bx # Partition for read
|
||||
cmpb $0x4,%al # 5 pressed?
|
||||
cmpb $0x4,%al # F5/#5 pressed?
|
||||
pushf # Save
|
||||
je main.13 # Yes
|
||||
shlb $0x4,%al # Point to
|
||||
@ -289,10 +293,10 @@ main.14: popw %si # Restore
|
||||
# If going to next drive, replace drive with selected one.
|
||||
# Remember to un-ascii it. Hey 0x80 is already set, cool!
|
||||
#
|
||||
jne main.15 # If not 5
|
||||
jne main.15 # If not F5/#5
|
||||
movb _NXTDRV(%bp),%dl # Next drive
|
||||
subb $'0',%dl # number XXX char val?
|
||||
#
|
||||
subb $'0',%dl # number
|
||||
#
|
||||
# load selected bootsector to the LOAD location in RAM.
|
||||
# If it fails to read or isn't marked bootable, treat it
|
||||
# as a bad selection.
|
||||
@ -371,7 +375,7 @@ intx13.1: int $0x13 # BIOS: Disk I/O
|
||||
# Menu strings
|
||||
|
||||
item: .ascii " "; .byte ' '|0x80
|
||||
prompt: .ascii "\nDef:"; .byte ' '|0x80
|
||||
prompt: .ascii "\nDef:"; .byte ' '|0x80
|
||||
crlf: .ascii "\r"; .byte '\n'|0x80
|
||||
|
||||
# Partition type tables
|
||||
@ -384,7 +388,7 @@ tables:
|
||||
#
|
||||
# These values indicate bootable types we know the names of
|
||||
#
|
||||
.byte 0x1, 0x4, 0x6, 0xb, 0xc, 0xe, 0x63, 0x83
|
||||
.byte 0x1, 0x4, 0x6, 0xb, 0xc, 0xe, 0x83
|
||||
.byte 0x9f, 0xa5, 0xa6, 0xa9
|
||||
#
|
||||
# These are offsets that match the known names above and point to the strings
|
||||
@ -397,21 +401,19 @@ tables:
|
||||
.byte os_dos-. # Windows
|
||||
.byte os_dos-. # Windows
|
||||
.byte os_dos-. # Windows
|
||||
.byte os_unix-. # UNIX
|
||||
.byte os_linux-. # Linux
|
||||
.byte os_bsd-. # BSD/OS
|
||||
.byte os_freebsd-. # FreeBSD
|
||||
.byte os_bsd-. # OpenBSD
|
||||
.byte os_bsd-. # NetBSD
|
||||
#
|
||||
# And here are the strings themselves. 0x80 or'd into a byte indicates
|
||||
# And here are the strings themselves. 0x80 or'd into a byte indicates
|
||||
# the end of the string. (not so great for Russians but...)
|
||||
#
|
||||
os_misc: .ascii "?"; .byte '?'|0x80
|
||||
os_dos: .ascii "DO"; .byte 'S'|0x80
|
||||
os_unix: .ascii "UNI"; .byte 'X'|0x80
|
||||
os_linux: .ascii "Lnu"; .byte 'x'|0x80
|
||||
os_freebsd: .ascii "F"
|
||||
os_linux: .ascii "Linu"; .byte 'x'|0x80
|
||||
os_freebsd: .ascii "Free"
|
||||
os_bsd: .ascii "BS"; .byte 'D'|0x80
|
||||
|
||||
.org PRT_OFF-0xe,0x90
|
||||
@ -420,7 +422,7 @@ os_bsd: .ascii "BS"; .byte 'D'|0x80
|
||||
|
||||
#
|
||||
# These values are sometimes changed before writing back to the drive
|
||||
# Be especially careful that nxtdrv: must come after drive:, as it
|
||||
# Be especially careful that nxtdrv: must come after drive:, as it
|
||||
# is part of the same string.
|
||||
#
|
||||
drive: .ascii "Drive "
|
||||
|
||||
@ -60,7 +60,7 @@ start: cld # String ops inc
|
||||
movw %ax,%ds # data
|
||||
movw %ax,%ss # Set up
|
||||
movw $LOAD,%sp # stack
|
||||
|
||||
|
||||
#
|
||||
# Copy this code to the address it was linked for
|
||||
#
|
||||
@ -142,13 +142,13 @@ main.3: movb %ch,-0x4(%bx) # Zero active flag (ch == 0)
|
||||
main.4: movb (%di),%cl # Partition
|
||||
addw %cx,%di # description
|
||||
callw putx # Display it
|
||||
main.5: incw %dx # Next item
|
||||
main.5: incw %dx # Next item
|
||||
addb $0x10,%bl # Next entry
|
||||
jnc main.3 # Till done
|
||||
#
|
||||
# Passed a 256 byte boundary..
|
||||
# table is finished.
|
||||
# Add one to the drive number and check it is valid,
|
||||
# Add one to the drive number and check it is valid,
|
||||
#
|
||||
popw %ax # Drive number
|
||||
subb $0x80-0x1,%al # Does next
|
||||
@ -176,7 +176,7 @@ main.6: addb $'0'|0x80,%al # Save next
|
||||
callw putx # item
|
||||
#
|
||||
# Now that we've printed the drive (if we needed to), display a prompt.
|
||||
# Get ready for the input byt noting the time.
|
||||
# Get ready for the input byte noting the time.
|
||||
#
|
||||
main.7: movw $prompt,%si # Display
|
||||
callw putstr # prompt
|
||||
@ -187,7 +187,7 @@ main.7: movw $prompt,%si # Display
|
||||
int $0x1a # system time
|
||||
movw %dx,%di # Ticks when
|
||||
addw _TICKS(%bp),%di # timeout
|
||||
#
|
||||
#
|
||||
# Busy loop, looking for keystrokes but
|
||||
# keeping one eye on the time.
|
||||
#
|
||||
@ -206,7 +206,7 @@ main.9: movb _OPT(%bp),%al # Load default
|
||||
#
|
||||
# User's last try was bad, beep in displeasure.
|
||||
# Since nothing was printed, just continue on as if the user
|
||||
# hadn't done anything. This gives the effect of the user getting a beep
|
||||
# hadn't done anything. This gives the effect of the user getting a beep
|
||||
# for all bad keystrokes but no action until either the timeout
|
||||
# occurs or the user hits a good key.
|
||||
#
|
||||
@ -250,7 +250,7 @@ main.12: cbtw # Option
|
||||
movw $FAKE,%si # Partition for write
|
||||
movb (%si),%dl # Drive number
|
||||
movw %si,%bx # Partition for read
|
||||
cmpb $0x4,%al # F5 pressed?
|
||||
cmpb $0x4,%al # F5/#5 pressed?
|
||||
pushf # Save
|
||||
je main.13 # Yes
|
||||
shlb $0x4,%al # Point to
|
||||
@ -272,10 +272,10 @@ main.14: popw %si # Restore
|
||||
# If going to next drive, replace drive with selected one.
|
||||
# Remember to un-ascii it. Hey 0x80 is already set, cool!
|
||||
#
|
||||
jne main.15 # If not F5
|
||||
jne main.15 # If not F5/#5
|
||||
movb _NXTDRV(%bp),%dl # Next drive
|
||||
subb $'0',%dl # number
|
||||
#
|
||||
#
|
||||
# load selected bootsector to the LOAD location in RAM.
|
||||
# If it fails to read or isn't marked bootable, treat it
|
||||
# as a bad selection.
|
||||
@ -387,7 +387,7 @@ tables:
|
||||
.byte os_bsd-. # OpenBSD
|
||||
.byte os_bsd-. # NetBSD
|
||||
#
|
||||
# And here are the strings themselves. 0x80 or'd into a byte indicates
|
||||
# And here are the strings themselves. 0x80 or'd into a byte indicates
|
||||
# the end of the string. (not so great for Russians but...)
|
||||
#
|
||||
os_misc: .ascii "?"; .byte '?'|0x80
|
||||
@ -402,7 +402,7 @@ os_bsd: .ascii "BS"; .byte 'D'|0x80
|
||||
|
||||
#
|
||||
# These values are sometimes changed before writing back to the drive
|
||||
# Be especially careful that nxtdrv: must come after drive:, as it
|
||||
# Be especially careful that nxtdrv: must come after drive:, as it
|
||||
# is part of the same string.
|
||||
#
|
||||
drive: .ascii "Drive "
|
||||
|
||||
@ -16,7 +16,7 @@
|
||||
|
||||
# $FreeBSD$
|
||||
|
||||
# A 512-byte boot manager which uses a 9600 baud serial console on COM1.
|
||||
# A 512-byte boot manager which uses a serial console on COM1.
|
||||
|
||||
.set NHRDRV,0x475 # Number of hard drives
|
||||
.set ORIGIN,0x600 # Execution address
|
||||
@ -26,13 +26,14 @@
|
||||
.set PRT_OFF,0x1be # Partition table
|
||||
|
||||
.set TBL0SZ,0x3 # Table 0 size
|
||||
.set TBL1SZ,0xc # Table 1 size
|
||||
.set TBL1SZ,0xb # Table 1 size
|
||||
|
||||
.set MAGIC,0xaa55 # Magic: bootable
|
||||
.set B0MAGIC,0xbb66 # Identification
|
||||
|
||||
.set KEY_ENTER,0x1c # Enter key scan code
|
||||
.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>
|
||||
@ -64,7 +65,7 @@ start: cld # String ops inc
|
||||
movw %ax,%ds # data
|
||||
movw %ax,%ss # Set up
|
||||
movw $LOAD,%sp # stack
|
||||
|
||||
|
||||
#
|
||||
# Copy this code to the address it was linked for
|
||||
#
|
||||
@ -95,6 +96,7 @@ start: cld # String ops inc
|
||||
main: pushw %dx # Save
|
||||
xorw %dx,%dx # Port: COM1
|
||||
movb $0xE3,%al # 9600 8-N-1
|
||||
|
||||
movb $0x00,%ah # BIOS: Set COM Port
|
||||
int $0x14 # Parameters
|
||||
popw %dx # Restore
|
||||
@ -157,13 +159,13 @@ main.3: movb %ch,-0x4(%bx) # Zero active flag (ch == 0)
|
||||
main.4: movb (%di),%cl # Partition
|
||||
addw %cx,%di # description
|
||||
callw putx # Display it
|
||||
main.5: incw %dx # Next item
|
||||
main.5: incw %dx # Next item
|
||||
addb $0x10,%bl # Next entry
|
||||
jnc main.3 # Till done
|
||||
#
|
||||
# Passed a 256 byte boundary..
|
||||
# table is finished.
|
||||
# Add one to the drive number and check it is valid,
|
||||
# Add one to the drive number and check it is valid,
|
||||
#
|
||||
popw %ax # Drive number
|
||||
subb $0x80-0x1,%al # Does next
|
||||
@ -191,13 +193,13 @@ main.6: addb $'0'|0x80,%al # Save next
|
||||
callw putx # item
|
||||
#
|
||||
# Now that we've printed the drive (if we needed to), display a prompt.
|
||||
# Get ready for the input byte noting the time.
|
||||
#
|
||||
main.7: movw $prompt,%si # Display
|
||||
callw putstr # prompt
|
||||
movb _OPT(%bp),%dl # Display
|
||||
decw %si # default
|
||||
callw putkey # key
|
||||
|
||||
main.7_1:
|
||||
xorb %ah,%ah # BIOS: Get
|
||||
int $0x1a # system time
|
||||
@ -205,7 +207,8 @@ main.7_1:
|
||||
addw _TICKS(%bp),%si # timeout
|
||||
|
||||
#
|
||||
# Check for a character on the serial port.
|
||||
# Busy loop, checking for a character on the serial port, but
|
||||
# keeping one eye on the time.
|
||||
#
|
||||
|
||||
main.8: xorw %dx,%dx # Use COM1
|
||||
@ -227,7 +230,7 @@ main.9: movb _OPT(%bp),%al # Load default
|
||||
#
|
||||
# User's last try was bad, beep in displeasure.
|
||||
# Since nothing was printed, just continue on as if the user
|
||||
# hadn't done anything. This gives the effect of the user getting a beep
|
||||
# hadn't done anything. This gives the effect of the user getting a beep
|
||||
# for all bad keystrokes but no action until either the timeout
|
||||
# occurs or the user hits a good key.
|
||||
#
|
||||
@ -236,11 +239,12 @@ main.10: movb $ASCII_BEL,%al # Signal
|
||||
jmp main.7_1 # Go back
|
||||
#
|
||||
# Check the character we just got on the serial port.
|
||||
# If it's CR act as if timed out.
|
||||
#
|
||||
main.11: movb $0x02,%ah # BIOS: Receive
|
||||
int $0x14 # COM Byte
|
||||
|
||||
#
|
||||
# If it's CR act as if timed out.
|
||||
#
|
||||
cmpb $ASCII_CR,%al # Enter pressed?
|
||||
je main.9 # Yes
|
||||
#
|
||||
@ -248,7 +252,7 @@ main.11: movb $0x02,%ah # BIOS: Receive
|
||||
# If not ask again.
|
||||
#
|
||||
subb $ASCII_1,%al # Less '1' ascii character
|
||||
cmpb $0x4,%al # 1..5?
|
||||
cmpb $0x4,%al # #1..#5?
|
||||
ja main.10 # No
|
||||
#
|
||||
# We have a selection.
|
||||
@ -267,7 +271,7 @@ main.12: cbtw # Option
|
||||
movw $FAKE,%si # Partition for write
|
||||
movb (%si),%dl # Drive number
|
||||
movw %si,%bx # Partition for read
|
||||
cmpb $0x4,%al # 5 pressed?
|
||||
cmpb $0x4,%al # F5/#5 pressed?
|
||||
pushf # Save
|
||||
je main.13 # Yes
|
||||
shlb $0x4,%al # Point to
|
||||
@ -289,10 +293,10 @@ main.14: popw %si # Restore
|
||||
# If going to next drive, replace drive with selected one.
|
||||
# Remember to un-ascii it. Hey 0x80 is already set, cool!
|
||||
#
|
||||
jne main.15 # If not 5
|
||||
jne main.15 # If not F5/#5
|
||||
movb _NXTDRV(%bp),%dl # Next drive
|
||||
subb $'0',%dl # number XXX char val?
|
||||
#
|
||||
subb $'0',%dl # number
|
||||
#
|
||||
# load selected bootsector to the LOAD location in RAM.
|
||||
# If it fails to read or isn't marked bootable, treat it
|
||||
# as a bad selection.
|
||||
@ -371,7 +375,7 @@ intx13.1: int $0x13 # BIOS: Disk I/O
|
||||
# Menu strings
|
||||
|
||||
item: .ascii " "; .byte ' '|0x80
|
||||
prompt: .ascii "\nDef:"; .byte ' '|0x80
|
||||
prompt: .ascii "\nDef:"; .byte ' '|0x80
|
||||
crlf: .ascii "\r"; .byte '\n'|0x80
|
||||
|
||||
# Partition type tables
|
||||
@ -384,7 +388,7 @@ tables:
|
||||
#
|
||||
# These values indicate bootable types we know the names of
|
||||
#
|
||||
.byte 0x1, 0x4, 0x6, 0xb, 0xc, 0xe, 0x63, 0x83
|
||||
.byte 0x1, 0x4, 0x6, 0xb, 0xc, 0xe, 0x83
|
||||
.byte 0x9f, 0xa5, 0xa6, 0xa9
|
||||
#
|
||||
# These are offsets that match the known names above and point to the strings
|
||||
@ -397,21 +401,19 @@ tables:
|
||||
.byte os_dos-. # Windows
|
||||
.byte os_dos-. # Windows
|
||||
.byte os_dos-. # Windows
|
||||
.byte os_unix-. # UNIX
|
||||
.byte os_linux-. # Linux
|
||||
.byte os_bsd-. # BSD/OS
|
||||
.byte os_freebsd-. # FreeBSD
|
||||
.byte os_bsd-. # OpenBSD
|
||||
.byte os_bsd-. # NetBSD
|
||||
#
|
||||
# And here are the strings themselves. 0x80 or'd into a byte indicates
|
||||
# And here are the strings themselves. 0x80 or'd into a byte indicates
|
||||
# the end of the string. (not so great for Russians but...)
|
||||
#
|
||||
os_misc: .ascii "?"; .byte '?'|0x80
|
||||
os_dos: .ascii "DO"; .byte 'S'|0x80
|
||||
os_unix: .ascii "UNI"; .byte 'X'|0x80
|
||||
os_linux: .ascii "Lnu"; .byte 'x'|0x80
|
||||
os_freebsd: .ascii "F"
|
||||
os_linux: .ascii "Linu"; .byte 'x'|0x80
|
||||
os_freebsd: .ascii "Free"
|
||||
os_bsd: .ascii "BS"; .byte 'D'|0x80
|
||||
|
||||
.org PRT_OFF-0xe,0x90
|
||||
@ -420,7 +422,7 @@ os_bsd: .ascii "BS"; .byte 'D'|0x80
|
||||
|
||||
#
|
||||
# These values are sometimes changed before writing back to the drive
|
||||
# Be especially careful that nxtdrv: must come after drive:, as it
|
||||
# Be especially careful that nxtdrv: must come after drive:, as it
|
||||
# is part of the same string.
|
||||
#
|
||||
drive: .ascii "Drive "
|
||||
|
||||
Loading…
Reference in New Issue
Block a user