static void
set_scancodes (void)
{
/* You must have visited computer museum. Keyboard without scancode set
knowledge. Assume XT. */
if (!grub_keyboard_orig_set)
{
grub_dprintf ("atkeyb", "No sets support assumed\n");
current_set = 1;
return;
}
grub_keyboard_controller_write (grub_keyboard_controller_orig
& ~KEYBOARD_AT_TRANSLATE);
write_mode (2);
current_set = query_mode ();
grub_dprintf ("atkeyb", "returned set %d\n", current_set);
if (current_set == 2)
return;
write_mode (1);
current_set = query_mode ();
grub_dprintf ("atkeyb", "returned set %d\n", current_set);
if (current_set == 1)
return;
grub_printf ("No supported scancode set found\n");
}
static int
query_mode (void)
{
grub_uint8_t ret;
int e;
e = write_mode (0);
if (!e)
return 0;
keyboard_controller_wait_until_ready ();
do
ret = grub_inb (KEYBOARD_REG_DATA);
while (ret == GRUB_AT_ACK);
/* QEMU translates the set even in no-translate mode. */
if (ret == 0x43 || ret == 1)
return 1;
if (ret == 0x41 || ret == 2)
return 2;
if (ret == 0x3f || ret == 3)
return 3;
return 0;
}
void Extsram::write_single_byte(uint16_t addr, uint8_t data){
write_mode();
set_address(addr);
*data_p = data;
default_mode();
}
int board_nand_init(struct nand_chip *nand)
{
nand->ecc.mode = NAND_ECC_SOFT;
/* Reference hardware control function */
nand->cmd_ctrl = kpn_nand_hwcontrol;
nand->read_byte = kpn_nand_read_byte;
nand->write_buf = kpn_nand_write_buf;
nand->read_buf = kpn_nand_read_buf;
nand->dev_ready = kpn_nand_dev_ready;
nand->chip_delay = KPN_DEFAULT_CHIP_DELAY;
/* reset mode register */
write_mode(KPN_CE1N + KPN_CE2N + KPN_WPN);
return 0;
}
static void kpn_nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
u8 reg_val = read_mode();
if (ctrl & NAND_CTRL_CHANGE) {
reg_val = reg_val & ~(KPN_ALE + KPN_CLE);
if (ctrl & NAND_CLE)
reg_val = reg_val | KPN_CLE;
if (ctrl & NAND_ALE)
reg_val = reg_val | KPN_ALE;
if (ctrl & NAND_NCE)
reg_val = reg_val & ~KPN_CE1N;
else
reg_val = reg_val | KPN_CE1N;
write_mode(reg_val);
}
if (cmd != NAND_CMD_NONE)
write_data(cmd);
/* wait until flash is ready */
kpn_wait_rdy();
}
