| #include <console/console.h> |
| #include <pc80/keyboard.h> |
| #include <device/device.h> |
| #include <arch/io.h> |
| |
| static int kbd_empty_input_buffer(void) |
| { |
| unsigned long timeout; |
| for(timeout = 1000000; timeout && (inb(0x64) & 0x02); timeout--) { |
| post_code(0); |
| } |
| return !!timeout; |
| } |
| |
| static int kbd_empty_output_buffer(void) |
| { |
| unsigned long timeout; |
| for(timeout = 1000000; timeout && ((inb(0x64) & 0x01) == 0); timeout--) { |
| post_code(0); |
| } |
| return !!timeout; |
| } |
| |
| /* much better keyboard init courtesy ollie@sis.com.tw |
| TODO: Typematic Setting, the keyboard is too slow for me */ |
| static void pc_keyboard_init(struct pc_keyboard *keyboard) |
| { |
| unsigned char regval; |
| |
| /* send cmd = 0xAA, self test 8042 */ |
| outb(0xaa, 0x64); |
| |
| /* empty input buffer or any other command/data will be lost */ |
| if (!kbd_empty_input_buffer()) { |
| printk_err("Keyboard input buffer would not empty\n"); |
| return; |
| } |
| |
| /* empty output buffer or any other command/data will be lost */ |
| if (!kbd_empty_output_buffer()) { |
| printk_err("Keyboard output buffer would not empty\n"); |
| return; |
| } |
| |
| /* read self-test result, 0x55 should be returned form 0x60 */ |
| if ((regval = inb(0x60) != 0x55)) |
| return; |
| |
| /* enable keyboard interface */ |
| outb(0x60, 0x64); |
| kbd_empty_input_buffer(); |
| |
| /* send cmd: enable IRQ 1 */ |
| outb(0x61, 0x60); |
| kbd_empty_input_buffer(); |
| |
| /* reset kerboard and self test (keyboard side) */ |
| outb(0xff, 0x60); |
| |
| /* empty inut bufferm or any other command/data will be lost */ |
| kbd_empty_input_buffer(); |
| |
| /* empty output buffer or any other command/data will be lost */ |
| kbd_empty_output_buffer(); |
| |
| if ((regval = inb(0x60) != 0xfa)) |
| return; |
| |
| kbd_empty_output_buffer(); |
| if ((regval = inb(0x60) != 0xaa)) |
| return; |
| } |
| |
| void init_pc_keyboard(unsigned port0, unsigned port1, struct pc_keyboard *kbd) |
| { |
| if ((port0 == 0x60) && (port1 == 0x64)) { |
| pc_keyboard_init(kbd); |
| } |
| } |