mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 06:12:58 +00:00
423 lines
8.7 KiB
C
423 lines
8.7 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* Based on sc520cdp.c from rolo 1.6:
|
|
*----------------------------------------------------------------------
|
|
* (C) Copyright 2000
|
|
* Sysgo Real-Time Solutions GmbH
|
|
* Klein-Winternheim, Germany
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#ifdef CONFIG_ALI152X
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/ic/ali512x.h>
|
|
|
|
|
|
/* ALI M5123 Logical device numbers:
|
|
* 0 FDC
|
|
* 1 unused?
|
|
* 2 unused?
|
|
* 3 lpt
|
|
* 4 UART1
|
|
* 5 UART2
|
|
* 6 RTC
|
|
* 7 mouse/kbd
|
|
* 8 CIO
|
|
*/
|
|
|
|
/*
|
|
************************************************************
|
|
* Some access primitives for the ALi chip: *
|
|
************************************************************
|
|
*/
|
|
|
|
static void ali_write(u8 index, u8 value)
|
|
{
|
|
/* write an arbirary register */
|
|
outb(index, ALI_INDEX);
|
|
outb(value, ALI_DATA);
|
|
}
|
|
|
|
#if 0
|
|
static int ali_read(u8 index)
|
|
{
|
|
outb(index, ALI_INDEX);
|
|
return inb(ALI_DATA);
|
|
}
|
|
#endif
|
|
|
|
#define ALI_OPEN() \
|
|
outb(0x51, ALI_INDEX); \
|
|
outb(0x23, ALI_INDEX)
|
|
|
|
|
|
#define ALI_CLOSE() \
|
|
outb(0xbb, ALI_INDEX)
|
|
|
|
/* Select a logical device */
|
|
#define ALI_SELDEV(dev) \
|
|
ali_write(0x07, dev)
|
|
|
|
|
|
void ali512x_init(void)
|
|
{
|
|
ALI_OPEN();
|
|
|
|
ali_write(0x02, 0x01); /* soft reset */
|
|
ali_write(0x03, 0x03); /* disable access to CIOs */
|
|
ali_write(0x22, 0x00); /* disable direct powerdown */
|
|
ali_write(0x23, 0x00); /* disable auto powerdown */
|
|
ali_write(0x24, 0x00); /* IR 8 is active hi, pin26 is PDIR */
|
|
|
|
ALI_CLOSE();
|
|
}
|
|
|
|
void ali512x_set_fdc(int enabled, u16 io, u8 irq, u8 dma_channel)
|
|
{
|
|
ALI_OPEN();
|
|
ALI_SELDEV(0);
|
|
|
|
ali_write(0x30, enabled?1:0);
|
|
if (enabled) {
|
|
ali_write(0x60, io >> 8);
|
|
ali_write(0x61, io & 0xff);
|
|
ali_write(0x70, irq);
|
|
ali_write(0x74, dma_channel);
|
|
|
|
/* AT mode, no drive swap */
|
|
ali_write(0xf0, 0x08);
|
|
ali_write(0xf1, 0x00);
|
|
ali_write(0xf2, 0xff);
|
|
ali_write(0xf4, 0x00);
|
|
}
|
|
ALI_CLOSE();
|
|
}
|
|
|
|
|
|
void ali512x_set_pp(int enabled, u16 io, u8 irq, u8 dma_channel)
|
|
{
|
|
ALI_OPEN();
|
|
ALI_SELDEV(3);
|
|
|
|
ali_write(0x30, enabled?1:0);
|
|
if (enabled) {
|
|
ali_write(0x60, io >> 8);
|
|
ali_write(0x61, io & 0xff);
|
|
ali_write(0x70, irq);
|
|
ali_write(0x74, dma_channel);
|
|
|
|
/* mode: EPP 1.9, ECP FIFO threshold = 7, IRQ active low */
|
|
ali_write(0xf0, 0xbc);
|
|
/* 12 MHz, Burst DMA in ECP */
|
|
ali_write(0xf1, 0x05);
|
|
}
|
|
ALI_CLOSE();
|
|
|
|
}
|
|
|
|
void ali512x_set_uart(int enabled, int index, u16 io, u8 irq)
|
|
{
|
|
ALI_OPEN();
|
|
ALI_SELDEV(index?5:4);
|
|
|
|
ali_write(0x30, enabled?1:0);
|
|
if (enabled) {
|
|
ali_write(0x60, io >> 8);
|
|
ali_write(0x61, io & 0xff);
|
|
ali_write(0x70, irq);
|
|
|
|
ali_write(0xf0, 0x00);
|
|
ali_write(0xf1, 0x00);
|
|
|
|
/* huh? write 0xf2 twice - a typo in rolo
|
|
* or some secret ali errata? Who knows?
|
|
*/
|
|
if (index) {
|
|
ali_write(0xf2, 0x00);
|
|
}
|
|
ali_write(0xf2, 0x0c);
|
|
}
|
|
ALI_CLOSE();
|
|
|
|
}
|
|
|
|
void ali512x_set_uart2_irda(int enabled)
|
|
{
|
|
ALI_OPEN();
|
|
ALI_SELDEV(5);
|
|
|
|
ali_write(0xf1, enabled?0x48:0x00); /* fullduplex IrDa */
|
|
ALI_CLOSE();
|
|
|
|
}
|
|
|
|
void ali512x_set_rtc(int enabled, u16 io, u8 irq)
|
|
{
|
|
ALI_OPEN();
|
|
ALI_SELDEV(6);
|
|
|
|
ali_write(0x30, enabled?1:0);
|
|
if (enabled) {
|
|
ali_write(0x60, io >> 8);
|
|
ali_write(0x61, io & 0xff);
|
|
ali_write(0x70, irq);
|
|
|
|
ali_write(0xf0, 0x00);
|
|
}
|
|
ALI_CLOSE();
|
|
}
|
|
|
|
void ali512x_set_kbc(int enabled, u8 kbc_irq, u8 mouse_irq)
|
|
{
|
|
ALI_OPEN();
|
|
ALI_SELDEV(7);
|
|
|
|
ali_write(0x30, enabled?1:0);
|
|
if (enabled) {
|
|
ali_write(0x70, kbc_irq);
|
|
ali_write(0x72, mouse_irq);
|
|
|
|
ali_write(0xf0, 0x00);
|
|
}
|
|
ALI_CLOSE();
|
|
}
|
|
|
|
|
|
/* Common I/O
|
|
*
|
|
* (This descripotsion is base on several incompete sources
|
|
* since I have not been able to obtain any datasheet for the device
|
|
* there may be some mis-understandings burried in here.
|
|
* -- Daniel daniel@omicron.se)
|
|
*
|
|
* There are 22 CIO pins numbered
|
|
* 10-17
|
|
* 20-25
|
|
* 30-37
|
|
*
|
|
* 20-24 are dedicated CIO pins, the other 17 are muliplexed with
|
|
* other functions.
|
|
*
|
|
* Secondary
|
|
* CIO Pin Function Decription
|
|
* =======================================================
|
|
* CIO10 IRQIN1 Interrupt input 1?
|
|
* CIO11 IRQIN2 Interrupt input 2?
|
|
* CIO12 IRRX IrDa Receive
|
|
* CIO13 IRTX IrDa Transmit
|
|
* CIO14 P21 KBC P21 fucntion
|
|
* CIO15 P20 KBC P21 fucntion
|
|
* CIO16 I2C_CLK I2C Clock
|
|
* CIO17 I2C_DAT I2C Data
|
|
*
|
|
* CIO20 -
|
|
* CIO21 -
|
|
* CIO22 -
|
|
* CIO23 -
|
|
* CIO24 -
|
|
* CIO25 LOCK Keylock
|
|
*
|
|
* CIO30 KBC_CLK Keybaord Clock
|
|
* CIO31 CS0J General Chip Select decoder CS0J
|
|
* CIO32 CS1J General Chip Select decoder CS1J
|
|
* CIO33 ALT_KCLK Alternative Keyboard Clock
|
|
* CIO34 ALT_KDAT Alternative Keyboard Data
|
|
* CIO35 ALT_MCLK Alternative Mouse Clock
|
|
* CIO36 ALT_MDAT Alternative Mouse Data
|
|
* CIO37 ALT_KBC Alternative KBC select
|
|
*
|
|
* The CIO use an indirect address scheme.
|
|
*
|
|
* Reigster 3 in the SIO is used to select the index and data
|
|
* port addresses where the CIO I/O registers show up.
|
|
* The function selection registers are accessible under
|
|
* function SIO 8.
|
|
*
|
|
* SIO reigster 3 (CIO Address Selection) bit definitions:
|
|
* bit 7 CIO index and data registers enabled
|
|
* bit 1-0 CIO indirect registers port address select
|
|
* 0 index = 0xE0 data = 0xE1
|
|
* 1 index = 0xE2 data = 0xE3
|
|
* 2 index = 0xE4 data = 0xE5
|
|
* 3 index = 0xEA data = 0xEB
|
|
*
|
|
* There are three CIO I/O register accessed via CIO index port and CIO data port
|
|
* 0x01 CIO 10-17 data
|
|
* 0x02 CIO 20-25 data (bits 7-6 unused)
|
|
* 0x03 CIO 30-37 data
|
|
*
|
|
*
|
|
* The pin function is accessed through normal
|
|
* SIO registers, each register have the same format:
|
|
*
|
|
* Bit Function Value
|
|
* 0 Input/output 1=input
|
|
* 1 Polarity of signal 1=inverted
|
|
* 2 Unused ??
|
|
* 3 Function (normal or special) 1=special
|
|
* 7-4 Unused
|
|
*
|
|
* SIO REG
|
|
* 0xe0 CIO 10 Config
|
|
* 0xe1 CIO 11 Config
|
|
* 0xe2 CIO 12 Config
|
|
* 0xe3 CIO 13 Config
|
|
* 0xe4 CIO 14 Config
|
|
* 0xe5 CIO 15 Config
|
|
* 0xe6 CIO 16 Config
|
|
* 0xe7 CIO 16 Config
|
|
*
|
|
* 0xe8 CIO 20 Config
|
|
* 0xe9 CIO 21 Config
|
|
* 0xea CIO 22 Config
|
|
* 0xeb CIO 23 Config
|
|
* 0xec CIO 24 Config
|
|
* 0xed CIO 25 Config
|
|
*
|
|
* 0xf5 CIO 30 Config
|
|
* 0xf6 CIO 31 Config
|
|
* 0xf7 CIO 32 Config
|
|
* 0xf8 CIO 33 Config
|
|
* 0xf9 CIO 34 Config
|
|
* 0xfa CIO 35 Config
|
|
* 0xfb CIO 36 Config
|
|
* 0xfc CIO 37 Config
|
|
*
|
|
*/
|
|
|
|
#define ALI_CIO_PORT_SEL 0x83
|
|
#define ALI_CIO_INDEX 0xea
|
|
#define ALI_CIO_DATA 0xeb
|
|
|
|
void ali512x_set_cio(int enabled)
|
|
{
|
|
int i;
|
|
|
|
ALI_OPEN();
|
|
|
|
if (enabled) {
|
|
ali_write(0x3, ALI_CIO_PORT_SEL); /* Enable CIO data register */
|
|
} else {
|
|
ali_write(0x3, ALI_CIO_PORT_SEL & ~0x80);
|
|
}
|
|
|
|
ALI_SELDEV(8);
|
|
|
|
ali_write(0x30, enabled?1:0);
|
|
|
|
/* set all pins to input to start with */
|
|
for (i=0xe0;i<0xee;i++) {
|
|
ali_write(i, 1);
|
|
}
|
|
|
|
for (i=0xf5;i<0xfe;i++) {
|
|
ali_write(i, 1);
|
|
}
|
|
|
|
ALI_CLOSE();
|
|
}
|
|
|
|
|
|
void ali512x_cio_function(int pin, int special, int inv, int input)
|
|
{
|
|
u8 data;
|
|
u8 addr;
|
|
|
|
/* valid pins are 10-17, 20-25 and 30-37 */
|
|
if (pin >= 10 && pin <= 17) {
|
|
addr = 0xe0+(pin&7);
|
|
} else if (pin >= 20 && pin <= 25) {
|
|
addr = 0xe8+(pin&7);
|
|
} else if (pin >= 30 && pin <= 37) {
|
|
addr = 0xf5+(pin&7);
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
ALI_OPEN();
|
|
|
|
ALI_SELDEV(8);
|
|
|
|
|
|
data=0xf4;
|
|
if (special) {
|
|
data |= 0x08;
|
|
} else {
|
|
if (inv) {
|
|
data |= 0x02;
|
|
}
|
|
if (input) {
|
|
data |= 0x01;
|
|
}
|
|
}
|
|
|
|
ali_write(addr, data);
|
|
|
|
ALI_CLOSE();
|
|
}
|
|
|
|
void ali512x_cio_out(int pin, int value)
|
|
{
|
|
u8 reg;
|
|
u8 data;
|
|
u8 bit;
|
|
|
|
reg = pin/10;
|
|
bit = 1 << (pin%10);
|
|
|
|
|
|
outb(reg, ALI_CIO_INDEX); /* select I/O register */
|
|
data = inb(ALI_CIO_DATA);
|
|
if (value) {
|
|
data |= bit;
|
|
} else {
|
|
data &= ~bit;
|
|
}
|
|
outb(data, ALI_CIO_DATA);
|
|
}
|
|
|
|
int ali512x_cio_in(int pin)
|
|
{
|
|
u8 reg;
|
|
u8 data;
|
|
u8 bit;
|
|
|
|
/* valid pins are 10-17, 20-25 and 30-37 */
|
|
reg = pin/10;
|
|
bit = 1 << (pin%10);
|
|
|
|
|
|
outb(reg, ALI_CIO_INDEX); /* select I/O register */
|
|
data = inb(ALI_CIO_DATA);
|
|
|
|
return data & bit;
|
|
}
|
|
|
|
|
|
#endif
|