- no more separate cd booting stuff (handled in FS now)
- scan_keyboard() asm function that reads char from keyboard controller in case one is in there to avoid stuckness when returning from minix
This commit is contained in:
parent
c899921eb2
commit
32dfc999ce
6 changed files with 24 additions and 1580 deletions
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@ -11,7 +11,7 @@ LD86 = $(CC86) -.o
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BIN = /usr/bin
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MDEC = /usr/mdec
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all: bootblock boot edparams masterboot jumpboot installboot addaout bootcd
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all: bootblock boot edparams masterboot jumpboot installboot addaout
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dos: boot.com mkfile.com
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bootblock: bootblock.s
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@ -40,11 +40,6 @@ boot: boothead.s boot.o bootimage.o rawfs86.o
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boothead.s boot.o bootimage.o rawfs86.o $(LIBS)
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install -S 8kb boot
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bootcd: bootcdhead.s boot.o bootimage.o rawfs86.o
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$(LD86) -o $@ \
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boothead.s boot.o bootimage.o rawfs86.o $(LIBS)
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install -S 16kb bootcd
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edparams.o: boot.c
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ln -f boot.c edparams.c
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$(CC) $(CFLAGS) -DUNIX -c edparams.c
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@ -117,5 +112,5 @@ $(BIN)/edparams: edparams
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clean:
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rm -f *.bak *.o
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rm -f bootblock addaout installboot boot masterboot jumpboot edparams bootcd
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rm -f bootblock addaout installboot boot masterboot jumpboot edparams
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rm -f dosboot boot.com mkfile mkfile.com
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@ -515,6 +515,7 @@ void initialize(void)
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relocate();
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#if !DOS
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/* Take the monitor out of the memory map if we have memory to spare,
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* and also keep the BIOS data area safe (1.5K), plus a bit extra for
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* where we may have to put a.out headers for older kernels.
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@ -103,6 +103,8 @@ int writesectors(u32_t bufaddr, u32_t sector, U8_t count);
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/* Write 1 or more sectors to "device". */
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int getch(void);
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/* Read a keypress. */
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void scan_keyboard(void);
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/* Read keypress directly from kb controller. */
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void ungetch(int c);
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/* Undo a keypress. */
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int escape(void);
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1535
boot/bootcdhead.s
1535
boot/bootcdhead.s
File diff suppressed because it is too large
Load diff
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@ -169,6 +169,7 @@ adj_ext:
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add 14(di), bx ! Add ext mem above 16M to mem below 16M
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no_ext:
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! Time to switch to a higher level language (not much higher)
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call _boot
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@ -1204,44 +1205,6 @@ bcd: movb ah, al
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.data1 0xD5,10 ! aad ! ax = (al >> 4) * 10 + (al & 0x0F)
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ret ! (BUG: assembler messes up aad & aam!)
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! void bootcdinfo(u32_t bufaddr, int *ret, int drive)
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! If booted from CD, do BIOS int 0x13 call to obtain boot CD device.
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.define _bootcdinfo
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_bootcdinfo:
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push bp
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mov bp, sp
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push ax
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push bx
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push cx
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push dx
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push si
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push ds
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mov bx, 10(bp) ! drive number
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mov cx, 8(bp)
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mov ax, 4(bp) ! buffer address from stack
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mov dx, 6(bp)
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call abs2seg
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mov si, ax ! bios will put data in ds:si
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mov ds, dx
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! movb dl, #0x00
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movb dh, #0x00
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movb dl, bl
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! mov ax, #0x4b01 ! command 0x4b, subcommand 0x01
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movb ah, #0x4b
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movb al, bh
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int 0x13
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mov bp, cx
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mov (bp), ax
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pop ds
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pop si
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pop dx
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pop cx
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pop bx
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pop ax
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pop bp
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ret
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! Support function for Minix-386 to make a BIOS int 13 call (disk I/O).
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bios13:
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mov bp, sp
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@ -1448,6 +1411,19 @@ _int15:
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pop si ! Restore
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ret
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! void scan_keyboard(void)
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! Read keyboard character. Needs to be done in case one is waiting.
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.define _scan_keyboard
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_scan_keyboard:
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inb 0x60
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inb 0x61
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movb ah, al
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orb al, #0x80
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outb 0x61
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movb al, ah
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outb 0x61
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ret
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.data
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.ascii "(null)\0" ! Just in case someone follows a null pointer
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.align 2
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@ -1533,3 +1509,5 @@ p_mcs_desc:
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.comm bus, 2 ! Saved return value of _get_bus
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.comm unchar, 2 ! Char returned by ungetch(c)
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.comm line, 2 ! Serial line I/O port to copy console I/O to.
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@ -604,6 +604,9 @@ void exec_image(char *image)
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/* Return from Minix. Things may have changed, so assume nothing. */
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fsok= -1;
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errno= 0;
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/* Read leftover character, if any. */
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scan_keyboard();
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}
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ino_t latest_version(char *version, struct stat *stp)
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