int board_early_init_f(void)
{
/* Port H: PH8 - PH13 == A4 - A9
* address lines of the parallel asynchronous memory interface
*/
/************************************************
* configure GPIO *
* set port H function enable register *
* configure PH8-PH13 as peripheral (not GPIO) *
*************************************************/
bfin_write_PORTH_FER(0x3F03);
/************************************************
* set port H MUX to configure PH8-PH13 *
* 1st Function (MUX = 00) (bits 16-27 == 0) *
* Set to address signals A4-A9 *
*************************************************/
bfin_write_PORTH_MUX(0);
/************************************************
* set port H direction register *
* enable PH8-PH13 as outputs *
*************************************************/
bfin_write_PORTH_DIR_SET(0x3F00);
/* Port I: PI0 - PH14 == A10 - A24
* address lines of the parallel asynchronous memory interface
*/
/************************************************
* set port I function enable register *
* configure PI0-PI14 as peripheral (not GPIO) *
*************************************************/
bfin_write_PORTI_FER(0x7fff);
/**************************************************
* set PORT I MUX to configure PI14-PI0 as *
* 1st Function (MUX=00) - address signals A10-A24 *
***************************************************/
bfin_write_PORTI_MUX(0);
/****************************************
* set PORT I direction register *
* enable PI0 - PI14 as outputs *
*****************************************/
bfin_write_PORTI_DIR_SET(0x7fff);
return 0;
}
/**
*
* Function: bfin_config_atapi_gpio
*
* Description: Configures the ATAPI pins for use
*
*/
static int bfin_config_atapi_gpio(struct ata_port *ap)
{
bfin_write_PORTH_FER(bfin_read_PORTH_FER() | 0x4);
bfin_write_PORTH_MUX(bfin_read_PORTH_MUX() & ~0x30);
bfin_write_PORTH_DIR_SET(0x4);
bfin_write_PORTJ_FER(0x7f8);
bfin_write_PORTJ_MUX(bfin_read_PORTI_MUX() & ~0x3fffc0);
bfin_write_PORTJ_DIR_SET(0x5f8);
bfin_write_PORTJ_DIR_CLEAR(0x200);
bfin_write_PORTJ_INEN(0x200);
bfin_write_PINT2_ASSIGN(0x0707);
bfin_write_PINT2_MASK_SET(0x200);
SSYNC();
return 0;
}
