Add: nonworking serial port driver implementation
This commit is contained in:
xamidev
89
bochslog.txt
89
bochslog.txt
@@ -44,45 +44,45 @@
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00000000000i[USBCTL] Pluggable USB devices
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00000000000i[USBCTL] mouse tablet keypad keyboard floppy disk cdrom printer
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00000000000i[USBCTL] hub
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00000000000i[MEM0 ] allocated memory at 0x7f59fd3dc010. after alignment, vector=0x7f59fd3dd000
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00000000000i[MEM0 ] allocated memory at 0x7fb8f1ddd010. after alignment, vector=0x7fb8f1dde000
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00000000000i[MEM0 ] 32.00MB
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00000000000i[MEM0 ] mem block size = 0x00020000, blocks=256
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00000000000i[MEM0 ] rom at 0xffff0000/65536 ('/usr/share/bochs/BIOS-bochs-legacy')
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00000000000i[CPU0 ] WARNING: 3DNow! is not implemented yet !
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00000000000i[DEV ] will paste characters every 100 iodev timer ticks
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00000000000i[ ] lt_dlhandle is 0x555b0a2aef10
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00000000000i[ ] lt_dlhandle is 0x5638a94a38b0
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00000000000i[PLUGIN] loaded plugin libbx_soundalsa.so
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00000000000i[WAVOUT] ALSA: opened default PCM output device
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00000000000i[WAVOUT] changed sample rate to 44101
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00000000000i[ ] lt_dlhandle is 0x555b0aa651a0
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00000000000i[ ] lt_dlhandle is 0x5638a9c59430
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00000000000i[PLUGIN] loaded plugin libbx_pci.so
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00000000000i[ ] lt_dlhandle is 0x555b0a2aeff0
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00000000000i[ ] lt_dlhandle is 0x5638a94a3990
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00000000000i[PLUGIN] loaded plugin libbx_pci2isa.so
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00000000000i[ ] lt_dlhandle is 0x555b0a22cea0
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00000000000i[ ] lt_dlhandle is 0x5638a9421ac0
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00000000000i[PLUGIN] loaded plugin libbx_usb_uhci.so
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00000000000i[ ] lt_dlhandle is 0x555b0a2c91b0
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00000000000i[ ] lt_dlhandle is 0x5638a94bdfc0
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00000000000i[PLUGIN] loaded plugin libbx_acpi.so
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00000000000i[ ] lt_dlhandle is 0x555b0a22c2a0
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00000000000i[ ] lt_dlhandle is 0x5638a9420ec0
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00000000000i[PLUGIN] loaded plugin libbx_hpet.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa6f950
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00000000000i[ ] lt_dlhandle is 0x5638a9c63be0
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00000000000i[PLUGIN] loaded plugin libbx_cmos.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa70160
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00000000000i[ ] lt_dlhandle is 0x5638a9c643f0
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00000000000i[PLUGIN] loaded plugin libbx_dma.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa70970
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00000000000i[ ] lt_dlhandle is 0x5638a9c64d60
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00000000000i[PLUGIN] loaded plugin libbx_pic.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa71130
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00000000000i[ ] lt_dlhandle is 0x5638a9c65520
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00000000000i[PLUGIN] loaded plugin libbx_pit.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa71b50
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00000000000i[ ] lt_dlhandle is 0x5638a9c65f40
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00000000000i[PLUGIN] loaded plugin libbx_vga.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa93190
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00000000000i[ ] lt_dlhandle is 0x5638a9c87580
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00000000000i[PLUGIN] loaded plugin libbx_floppy.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa939d0
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00000000000i[ ] lt_dlhandle is 0x5638a9c87dc0
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00000000000i[PLUGIN] loaded plugin libbx_ioapic.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa941e0
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00000000000i[ ] lt_dlhandle is 0x5638a9c885d0
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00000000000i[PLUGIN] loaded plugin libbx_keyboard.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa94ae0
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00000000000i[ ] lt_dlhandle is 0x5638a9c88ed0
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00000000000i[PLUGIN] loaded plugin libbx_harddrv.so
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00000000000i[ ] lt_dlhandle is 0x555b0aa96bb0
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00000000000i[ ] lt_dlhandle is 0x5638a9c8afa0
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00000000000i[PLUGIN] loaded plugin libbx_pci_ide.so
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00000000000i[PLUGIN] init_dev of 'pci' plugin device by virtual method
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00000000000i[DEV ] i440FX PMC present at device 0, function 0
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@@ -90,7 +90,7 @@
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00000000000i[DEV ] PIIX3 PCI-to-ISA bridge present at device 1, function 0
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00000000000i[PLUGIN] init_dev of 'cmos' plugin device by virtual method
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00000000000i[CMOS ] Using local time for initial clock
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00000000000i[CMOS ] Setting initial clock to: Sun May 19 15:09:18 2024 (time0=1716124158)
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00000000000i[CMOS ] Setting initial clock to: Mon May 20 21:48:15 2024 (time0=1716234495)
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00000000000i[PLUGIN] init_dev of 'dma' plugin device by virtual method
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00000000000i[DMA ] channel 4 used by cascade
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00000000000i[PLUGIN] init_dev of 'pic' plugin device by virtual method
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@@ -133,7 +133,7 @@
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00000000000i[PAR ] parallel port 1 at 0x0378 irq 7
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00000000000i[PLUGIN] init_dev of 'biosdev' plugin device by virtual method
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00000000000i[PLUGIN] init_dev of 'serial' plugin device by virtual method
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00000000000i[SER ] com1 at 0x03f8 irq 4 (mode: null)
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00000000000i[SER ] com1 at 0x03f8 irq 4 (mode: file)
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00000000000i[PLUGIN] init_dev of 'extfpuirq' plugin device by virtual method
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00000000000i[PLUGIN] init_dev of 'gameport' plugin device by virtual method
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00000000000i[PLUGIN] init_dev of 'usb_uhci' plugin device by virtual method
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@@ -247,28 +247,29 @@
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00000443015i[BXVGA ] VBE known Display Interface b0c0
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00000443047i[BXVGA ] VBE known Display Interface b0c5
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00000445690i[VBIOS ] VBE Bios $Id: vbe.c 292 2021-06-03 12:24:22Z vruppert $
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00004097883i[BIOS ] IDE time out
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00716758940i[BIOS ] Booting from 07c0:0000
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00716854324i[BIOS ] int13_harddisk: function 41, unmapped device for ELDL=80
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00716857995i[BIOS ] int13_harddisk: function 08, unmapped device for ELDL=80
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00716861666i[BIOS ] *** int 15h function AX=00c0, BX=0000 not yet supported!
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00842722000p[SDL2 ] >>PANIC<< User requested shutdown.
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00842722000i[CPU0 ] CPU is in protected mode (active)
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00842722000i[CPU0 ] CS.mode = 32 bit
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00842722000i[CPU0 ] SS.mode = 32 bit
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00842722000i[CPU0 ] EFER = 0x00000000
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00842722000i[CPU0 ] | EAX=0000002a EBX=0002cd80 ECX=000000f0 EDX=000003d5
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00842722000i[CPU0 ] | ESP=00067ecc EBP=00067ee0 ESI=0002ced8 EDI=0002ced9
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00842722000i[CPU0 ] | IOPL=0 id vip vif ac vm rf nt of df if tf sf zf af pf cf
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00842722000i[CPU0 ] | SEG sltr(index|ti|rpl) base limit G D
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00842722000i[CPU0 ] | CS:0008( 0001| 0| 0) 00000000 ffffffff 1 1
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00842722000i[CPU0 ] | DS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00842722000i[CPU0 ] | SS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00842722000i[CPU0 ] | ES:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00842722000i[CPU0 ] | FS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00842722000i[CPU0 ] | GS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00842722000i[CPU0 ] | EIP=001004ab (001004ab)
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00842722000i[CPU0 ] | CR0=0x60000011 CR2=0x00000000
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00842722000i[CPU0 ] | CR3=0x00000000 CR4=0x00000000
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00842722000i[CMOS ] Last time is 1716125000 (Sun May 19 15:23:20 2024)
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00842722000i[SIM ] quit_sim called with exit code 1
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00004097906i[BIOS ] IDE time out
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00685117203i[BIOS ] Booting from 07c0:0000
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00685212587i[BIOS ] int13_harddisk: function 41, unmapped device for ELDL=80
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00685216258i[BIOS ] int13_harddisk: function 08, unmapped device for ELDL=80
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00685219929i[BIOS ] *** int 15h function AX=00c0, BX=0000 not yet supported!
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00867137284i[ ] Ctrl-C detected in signal handler.
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00867137285i[ ] dbg: Quit
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00867137285i[CPU0 ] CPU is in protected mode (active)
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00867137285i[CPU0 ] CS.mode = 32 bit
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00867137285i[CPU0 ] SS.mode = 32 bit
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00867137285i[CPU0 ] EFER = 0x00000000
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00867137285i[CPU0 ] | EAX=0000002a EBX=0002cd80 ECX=000000f0 EDX=00000006
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00867137285i[CPU0 ] | ESP=00067ecc EBP=00067ee0 ESI=0002ced8 EDI=0002ced9
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00867137285i[CPU0 ] | IOPL=0 id vip vif ac vm rf nt of df if tf sf zf af pf cf
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00867137285i[CPU0 ] | SEG sltr(index|ti|rpl) base limit G D
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00867137285i[CPU0 ] | CS:0008( 0001| 0| 0) 00000000 ffffffff 1 1
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00867137285i[CPU0 ] | DS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00867137285i[CPU0 ] | SS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00867137285i[CPU0 ] | ES:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00867137285i[CPU0 ] | FS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00867137285i[CPU0 ] | GS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
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00867137285i[CPU0 ] | EIP=001006cb (001006cb)
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00867137285i[CPU0 ] | CR0=0x60000011 CR2=0x00000000
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00867137285i[CPU0 ] | CR3=0x00000000 CR4=0x00000000
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00867137285i[CMOS ] Last time is 1716235362 (Mon May 20 22:02:42 2024)
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00867137285i[SIM ] quit_sim called with exit code 0
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@@ -7,3 +7,4 @@ boot: cdrom
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log: bochslog.txt
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clock: sync=realtime, time0=local
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cpu: count=1, ips=1000000
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com1: enabled=1, mode=file, dev=com1.out
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1
io.h
1
io.h
@@ -2,5 +2,6 @@
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#define INCLUDE_IO_H
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void outb(unsigned short port, unsigned char data);
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unsigned char inb(unsigned short port);
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#endif
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7
io.s
7
io.s
@@ -5,3 +5,10 @@ outb:
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mov dx, [esp + 4]
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out dx, al
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ret
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global inb
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inb:
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mov dx, [esp + 4]
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in al, dx
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ret
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Binary file not shown.
BIN
kernel.elf
BIN
kernel.elf
Binary file not shown.
2
kmain.c
2
kmain.c
@@ -1,8 +1,10 @@
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#include "stdio.h"
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#include "serial.h"
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int kmain(int retvalue)
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{
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clear();
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puts("hello\nbrave\nnew\nworld");
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serial_write("hello", 1);
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return retvalue;
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}
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2
makefile
2
makefile
@@ -1,4 +1,4 @@
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OBJECTS = loader.o kmain.o stdio.o io.o string.o
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OBJECTS = loader.o kmain.o stdio.o io.o string.o serial.o
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CC = gcc
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CFLAGS = -m32 -nostdlib -nostdinc -fno-builtin -fno-stack-protector -nostartfiles -nodefaultlibs -Wall -Wextra -c
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LDFLAGS = -T link.ld -melf_i386
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68
serial.c
Normal file
68
serial.c
Normal file
@@ -0,0 +1,68 @@
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#include "io.h"
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#include "serial.h"
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void serial_configure_baud_rate(unsigned short com, unsigned short divisor)
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{
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outb(SERIAL_LINE_CMD_PORT(com), SERIAL_LINE_ENABLE_DLAB);
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outb(SERIAL_DATA_PORT(com), (divisor >> 8) & 0x00FF);
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outb(SERIAL_DATA_PORT(com), divisor & 0x00FF);
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}
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void serial_configure_line(unsigned short com)
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{
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/*
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d b p s dl
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0 0 000 0 11 = 0x03
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Length 8 bits, no parity bit, one stop bit, break control off
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*/
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outb(SERIAL_LINE_CMD_PORT(com), 0x03);
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}
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void serial_configure_buffer(unsigned short com)
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{
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/*
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lv b r d c c e
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11 0 0 0 1 1 1 = 0xC7
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Enable FIFO, clear FIFO queues, use 14 bytes as queue size
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*/
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outb(SERIAL_LINE_CMD_PORT(com), 0xC7);
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}
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void serial_configure_modem(unsigned short com)
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{
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/*
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r r a l a a r d
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0 0 0 0 0 0 1 1 = 0x03
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Ready to transmit, data terminal ready
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*/
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outb(SERIAL_LINE_CMD_PORT(com), 0x03);
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}
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int serial_is_transmit_fifo_empty(unsigned short com)
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{
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return (inb(SERIAL_LINE_STATUS_PORT(com)) & 0x20);
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}
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void serial_write(const char* buf, unsigned short com)
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{
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serial_configure_baud_rate(com, 2);
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serial_configure_line(com);
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serial_configure_buffer(com);
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serial_configure_modem(com);
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for (unsigned int i = 0; i<sizeof(buf); i++)
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{
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while (serial_is_transmit_fifo_empty(com))
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{
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outb(SERIAL_DATA_PORT(com), buf[i]);
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}
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}
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return;
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}
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20
serial.h
Normal file
20
serial.h
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@@ -0,0 +1,20 @@
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#ifndef INCLUDE_SERIAL_H
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#define INCLUDE_SERIAL_H
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#define SERIAL_COM1_BASE 0x3F8
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#define SERIAL_DATA_PORT(base) (base)
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#define SERIAL_FIFO_CMD_PORT(base) (base + 2)
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#define SERIAL_LINE_CMD_PORT(base) (base + 3)
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#define SERIAL_MODEM_CMD_PORT(base) (base + 4)
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#define SERIAL_LINE_STATUS_PORT(base) (base + 5)
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#define SERIAL_LINE_ENABLE_DLAB 0x80
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void serial_configure_baud_rate(unsigned short com, unsigned short divisor);
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void serial_configure_line(unsigned short com);
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void serial_configure_buffer(unsigned short com);
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void serial_configure_modem(unsigned short com);
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int serial_is_transmit_fifo_empty(unsigned short com);
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void serial_write(const char* buf, unsigned short com);
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#endif
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