#include "util.h" // debug_enter
#include "config.h" // CONFIG_*
+//--------------------------------------------------------------------------
+// keyboard_panic
+//--------------------------------------------------------------------------
+static void
+keyboard_panic(u16 status)
+{
+ // If you're getting a 993 keyboard panic here,
+ // please see the comment in keyboard_init
+
+ BX_PANIC("Keyboard error:%u\n",status);
+}
+
+static void
+kbd_flush(u8 code)
+{
+ u16 max = 0xffff;
+ while ((inb(PORT_PS2_STATUS) & 0x02) && (--max > 0))
+ outb(code, PORT_DIAG);
+ if (!max && code != 0xff)
+ keyboard_panic(code);
+}
+
+static void
+kbd_waitdata(u8 code)
+{
+ u16 max = 0xffff;
+ while ( ((inb(PORT_PS2_STATUS) & 0x01) == 0) && (--max>0) )
+ outb(code, PORT_DIAG);
+ if (!max)
+ keyboard_panic(code);
+}
+
+//--------------------------------------------------------------------------
+// keyboard_init
+//--------------------------------------------------------------------------
+// this file is based on LinuxBIOS implementation of keyboard.c
+static void
+keyboard_init()
+{
+ /* ------------------- Flush buffers ------------------------*/
+ /* Wait until buffer is empty */
+ kbd_flush(0xff);
+
+ /* flush incoming keys */
+ u16 max=0x2000;
+ while (--max > 0) {
+ outb(0x00, PORT_DIAG);
+ if (inb(PORT_PS2_STATUS) & 0x01) {
+ inb(PORT_PS2_DATA);
+ max = 0x2000;
+ }
+ }
+
+ // Due to timer issues, and if the IPS setting is > 15000000,
+ // the incoming keys might not be flushed here. That will
+ // cause a panic a few lines below. See sourceforge bug report :
+ // [ 642031 ] FATAL: Keyboard RESET error:993
+
+ /* ------------------- controller side ----------------------*/
+ /* send cmd = 0xAA, self test 8042 */
+ outb(0xaa, PORT_PS2_STATUS);
+
+ kbd_flush(0x00);
+ kbd_waitdata(0x01);
+
+ /* read self-test result, 0x55 should be returned from 0x60 */
+ if (inb(PORT_PS2_DATA) != 0x55)
+ keyboard_panic(991);
+
+ /* send cmd = 0xAB, keyboard interface test */
+ outb(0xab, PORT_PS2_STATUS);
+
+ kbd_flush(0x10);
+ kbd_waitdata(0x11);
+
+ /* read keyboard interface test result, */
+ /* 0x00 should be returned form 0x60 */
+ if (inb(PORT_PS2_DATA) != 0x00)
+ keyboard_panic(992);
+
+ /* Enable Keyboard clock */
+ outb(0xae, PORT_PS2_STATUS);
+ outb(0xa8, PORT_PS2_STATUS);
+
+ /* ------------------- keyboard side ------------------------*/
+ /* reset kerboard and self test (keyboard side) */
+ outb(0xff, PORT_PS2_DATA);
+
+ kbd_flush(0x20);
+ kbd_waitdata(0x21);
+
+ /* keyboard should return ACK */
+ if (inb(PORT_PS2_DATA) != 0xfa)
+ keyboard_panic(993);
+
+ kbd_waitdata(0x31);
+
+ if (inb(PORT_PS2_DATA) != 0xaa)
+ keyboard_panic(994);
+
+ /* Disable keyboard */
+ outb(0xf5, PORT_PS2_DATA);
+
+ kbd_flush(0x40);
+ kbd_waitdata(0x41);
+
+ /* keyboard should return ACK */
+ if (inb(PORT_PS2_DATA) != 0xfa)
+ keyboard_panic(995);
+
+ /* Write Keyboard Mode */
+ outb(0x60, PORT_PS2_STATUS);
+
+ kbd_flush(0x50);
+
+ /* send cmd: scan code convert, disable mouse, enable IRQ 1 */
+ outb(0x61, PORT_PS2_DATA);
+
+ kbd_flush(0x60);
+
+ /* Enable keyboard */
+ outb(0xf4, PORT_PS2_DATA);
+
+ kbd_flush(0x70);
+ kbd_waitdata(0x71);
+
+ /* keyboard should return ACK */
+ if (inb(PORT_PS2_DATA) != 0xfa)
+ keyboard_panic(996);
+
+ outb(0x77, PORT_DIAG);
+}
+
+void
+kbd_setup()
+{
+ u16 x = offsetof(struct bios_data_area_s, kbd_buf) - 0x400;
+ SET_BDA(kbd_mode, 0x10);
+ SET_BDA(kbd_buf_head, x);
+ SET_BDA(kbd_buf_tail, x);
+ SET_BDA(kbd_buf_start_offset, x);
+
+ SET_BDA(kbd_buf_end_offset
+ , x + FIELD_SIZEOF(struct bios_data_area_s, kbd_buf));
+
+ keyboard_init();
+}
+
static u8
enqueue_key(u8 scan_code, u8 ascii_code)
{
if (buffer_tail == buffer_head)
return 0;
- SET_FARVAR(0x0000, *(u8*)(temp_tail+0x400+0), ascii_code);
- SET_FARVAR(0x0000, *(u8*)(temp_tail+0x400+1), scan_code);
+ SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+0x400+0), ascii_code);
+ SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+0x400+1), scan_code);
SET_BDA(kbd_buf_tail, buffer_tail);
return 1;
}
break;
if (!incr)
return 0;
- nop();
+ cpu_relax();
}
- *ascii_code = GET_FARVAR(0x0000, *(u8*)(buffer_head+0x400+0));
- *scan_code = GET_FARVAR(0x0000, *(u8*)(buffer_head+0x400+1));
+ *ascii_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+0x400+0));
+ *scan_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+0x400+1));
if (incr) {
u16 buffer_start = GET_BDA(kbd_buf_start_offset);
}
// INT 16h Keyboard Service Entry Point
-void VISIBLE
+void VISIBLE16
handle_16(struct bregs *regs)
{
-// debug_enter(regs);
+ //debug_enter(regs);
set_leds();
break; /* toss key releases ... */
}
if (scancode > MAX_SCAN_CODE) {
- BX_INFO("KBD: int09h_handler(): unknown scancode read: 0x%02x!\n", scancode);
+ BX_INFO("KBD: int09h_handler(): unknown scancode read: 0x%02x!\n"
+ , scancode);
return;
}
u8 asciicode;
} else if (shift_flags & 0x04) { /* CONTROL */
asciicode = GET_VAR(CS, info->control);
scancode = GET_VAR(CS, info->control) >> 8;
- } else if (((mf2_state & 0x02) > 0) && ((scancode >= 0x47) && (scancode <= 0x53))) {
+ } else if ((mf2_state & 0x02) > 0
+ && scancode >= 0x47 && scancode <= 0x53) {
/* extended keys handling */
asciicode = 0xe0;
scancode = GET_VAR(CS, info->normal) >> 8;
}
// INT09h : Keyboard Hardware Service Entry Point
-void VISIBLE
-handle_09(struct bregs *regs)
+void VISIBLE16
+handle_09()
{
- //debug_isr(regs);
+ //debug_isr();
// disable keyboard
outb(0xad, PORT_PS2_STATUS);
projects / seabios.git / blobdiff