mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
29d69787ea
numeric constants and #defines for such constants. Since grepping the tree shouldn't be necessary to find a POST code and we already have too many duplicated POST codes, gather almost all of them in a common header file. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@549 f3766cd6-281f-0410-b1cd-43a5c92072e9
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
#include <console.h>
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#include <keyboard.h>
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#include <device/device.h>
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#include <io.h>
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static int kbd_empty_input_buffer(void)
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{
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unsigned long timeout;
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for(timeout = 1000000; timeout && (inb(0x64) & 0x02); timeout--) {
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post_code(POST_KBD_EMPTY_INPUT_BUFFER);
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}
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return !!timeout;
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}
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static int kbd_empty_output_buffer(void)
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{
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unsigned long timeout;
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for(timeout = 1000000; timeout && ((inb(0x64) & 0x01) == 0); timeout--) {
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post_code(POST_KBD_EMPTY_OUTPUT_BUFFER);
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}
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return !!timeout;
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}
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/* much better keyboard init courtesy ollie@sis.com.tw
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TODO: Typematic Setting, the keyboard is too slow for me */
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static void pc_keyboard_init(struct pc_keyboard *keyboard)
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{
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unsigned char regval;
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/* send cmd = 0xAA, self test 8042 */
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outb(0xaa, 0x64);
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/* empty input buffer or any other command/data will be lost */
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if (!kbd_empty_input_buffer()) {
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printk(BIOS_ERR, "Keyboard input buffer would not empty\n");
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return;
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}
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/* empty output buffer or any other command/data will be lost */
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if (!kbd_empty_output_buffer()) {
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printk(BIOS_ERR, "Keyboard output buffer would not empty\n");
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return;
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}
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/* read self-test result, 0x55 should be returned form 0x60 */
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if ((regval = inb(0x60) != 0x55))
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return;
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/* enable keyboard interface */
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outb(0x60, 0x64);
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kbd_empty_input_buffer();
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/* send cmd: enable IRQ 1 */
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outb(0x61, 0x60);
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kbd_empty_input_buffer();
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/* reset kerboard and self test (keyboard side) */
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outb(0xff, 0x60);
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/* empty inut bufferm or any other command/data will be lost */
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kbd_empty_input_buffer();
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/* empty output buffer or any other command/data will be lost */
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kbd_empty_output_buffer();
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if ((regval = inb(0x60) != 0xfa))
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return;
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kbd_empty_output_buffer();
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if ((regval = inb(0x60) != 0xaa))
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return;
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}
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void init_pc_keyboard(unsigned int port0, unsigned int port1, struct pc_keyboard *kbd)
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{
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if ((port0 == 0x60) && (port1 == 0x64)) {
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pc_keyboard_init(kbd);
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}
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}
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