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https://gitlab.com/qemu-project/openbios.git
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Add EBUS bridge, refactor PC serial and keyboard, generalize floppy
git-svn-id: svn://coreboot.org/openbios/openbios-devel@377 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Blue Swirl
216
drivers/pc_kbd.c
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216
drivers/pc_kbd.c
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/*
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* Copyright (C) 2003, 2004 Stefan Reinauer
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*
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* See the file "COPYING" for further information about
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* the copyright and warranty status of this work.
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*/
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#include "openbios/config.h"
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#include "openbios/bindings.h"
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#include "openbios/kernel.h"
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#include "openbios/drivers.h"
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#include "libc/vsprintf.h"
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/* ******************************************************************
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* simple polling video/keyboard console functions
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* ****************************************************************** */
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/*
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* keyboard driver
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*/
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static const char normal[] = {
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0x0, 0x1b, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-',
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'=', '\b', '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o',
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'p', '[', ']', 0xa, 0x0, 'a', 's', 'd', 'f', 'g', 'h', 'j',
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'k', 'l', ';', 0x27, 0x60, 0x0, 0x5c, 'z', 'x', 'c', 'v', 'b',
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'n', 'm', ',', '.', '/', 0x0, '*', 0x0, ' ', 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '0', 0x7f
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};
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static const char shifted[] = {
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0x0, 0x1b, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_',
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'+', '\b', '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O',
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'P', '{', '}', 0xa, 0x0, 'A', 'S', 'D', 'F', 'G', 'H', 'J',
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'K', 'L', ':', 0x22, '~', 0x0, '|', 'Z', 'X', 'C', 'V', 'B',
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'N', 'M', '<', '>', '?', 0x0, '*', 0x0, ' ', 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '7', '8',
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'9', 0x0, '4', '5', '6', 0x0, '1', '2', '3', '0', 0x7f
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};
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static int key_ext;
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static int key_lshift = 0, key_rshift = 0, key_caps = 0;
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static char last_key;
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static void pc_kbd_cmd(unsigned char cmd, unsigned char val)
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{
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outb(cmd, 0x60);
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/* wait until keyboard controller accepts cmds: */
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while (inb(0x64) & 2);
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outb(val, 0x60);
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while (inb(0x64) & 2);
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}
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static void pc_kbd_controller_cmd(unsigned char cmd, unsigned char val)
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{
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outb(cmd, 0x64);
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/* wait until keyboard controller accepts cmds: */
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while (inb(0x64) & 2);
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outb(val, 0x60);
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while (inb(0x64) & 2);
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}
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static char pc_kbd_poll(void)
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{
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unsigned int c;
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if (inb(0x64) & 1) {
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c = inb(0x60);
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switch (c) {
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case 0xe0:
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key_ext = 1;
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return 0;
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case 0x2a:
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key_lshift = 1;
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return 0;
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case 0x36:
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key_rshift = 1;
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return 0;
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case 0xaa:
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key_lshift = 0;
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return 0;
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case 0xb6:
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key_rshift = 0;
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return 0;
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case 0x3a:
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if (key_caps) {
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key_caps = 0;
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pc_kbd_cmd(0xed, 0);
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} else {
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key_caps = 1;
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pc_kbd_cmd(0xed, 4); /* set caps led */
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}
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return 0;
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}
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if (key_ext) {
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// void printk(const char *format, ...);
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printk("extended keycode: %x\n", c);
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key_ext = 0;
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return 0;
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}
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if (c & 0x80) /* unhandled key release */
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return 0;
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if (key_lshift || key_rshift)
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return key_caps ? normal[c] : shifted[c];
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else
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return key_caps ? shifted[c] : normal[c];
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}
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return 0;
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}
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int pc_kbd_dataready(void)
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{
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if (last_key)
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return 1;
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last_key = pc_kbd_poll();
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return (last_key != 0);
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}
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unsigned char pc_kbd_readdata(void)
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{
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char tmp;
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while (!pc_kbd_dataready());
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tmp = last_key;
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last_key = 0;
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return tmp;
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}
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/* ( addr len -- actual ) */
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static void
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pc_kbd_read(void)
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{
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unsigned char *addr;
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int len;
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len = POP();
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addr = (unsigned char *)POP();
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if (len != 1)
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printk("pc_kbd_read: bad len, addr %lx len %x\n", (unsigned long)addr, len);
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if (pc_kbd_dataready()) {
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*addr = pc_kbd_readdata();
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PUSH(1);
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} else {
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PUSH(0);
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}
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}
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static void
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pc_kbd_close(void)
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{
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}
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static void
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pc_kbd_open(unsigned long *address)
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{
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int len;
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phandle_t ph;
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unsigned long *prop;
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char *args;
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fword("my-self");
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fword("ihandle>phandle");
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ph = (phandle_t)POP();
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prop = (unsigned long *)get_property(ph, "address", &len);
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*address = *prop;
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fword("my-args");
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args = pop_fstr_copy();
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RET ( -1 );
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}
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DECLARE_UNNAMED_NODE(pc_kbd, INSTALL_OPEN, sizeof(unsigned long));
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NODE_METHODS(pc_kbd) = {
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{ "open", pc_kbd_open },
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{ "close", pc_kbd_close },
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{ "read", pc_kbd_read },
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};
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void
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ob_pc_kbd_init(const char *path, const char *dev_name, uint64_t base,
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uint64_t offset, int intr)
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{
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phandle_t chosen, aliases;
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char nodebuff[128];
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snprintf(nodebuff, sizeof(nodebuff), "%s/%s", path, dev_name);
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REGISTER_NAMED_NODE(pc_kbd, nodebuff);
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push_str(nodebuff);
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fword("find-device");
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push_str(dev_name);
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fword("device-name");
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push_str("keyboard");
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fword("device-type");
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chosen = find_dev("/chosen");
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push_str(nodebuff);
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fword("open-dev");
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set_int_property(chosen, "keyboard", POP());
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aliases = find_dev("/aliases");
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set_property(aliases, "keyboard", nodebuff, strlen(nodebuff) + 1);
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pc_kbd_controller_cmd(0x60, 0x40); // Write mode command, translated mode
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}
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