278 lines
6.6 KiB
C
278 lines
6.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* linux/arch/m68k/hp300/config.c
|
|
*
|
|
* Copyright (C) 1998 Philip Blundell <philb@gnu.org>
|
|
*
|
|
* This file contains the HP300-specific initialisation code. It gets
|
|
* called by setup.c.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/console.h>
|
|
#include <linux/rtc.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/bootinfo-hp300.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/blinken.h>
|
|
#include <asm/io.h> /* readb() and writeb() */
|
|
#include <asm/hp300hw.h>
|
|
|
|
#include "time.h"
|
|
|
|
unsigned long hp300_model;
|
|
unsigned long hp300_uart_scode = -1;
|
|
unsigned char hp300_ledstate;
|
|
EXPORT_SYMBOL(hp300_ledstate);
|
|
|
|
static char s_hp330[] __initdata = "330";
|
|
static char s_hp340[] __initdata = "340";
|
|
static char s_hp345[] __initdata = "345";
|
|
static char s_hp360[] __initdata = "360";
|
|
static char s_hp370[] __initdata = "370";
|
|
static char s_hp375[] __initdata = "375";
|
|
static char s_hp380[] __initdata = "380";
|
|
static char s_hp385[] __initdata = "385";
|
|
static char s_hp400[] __initdata = "400";
|
|
static char s_hp425t[] __initdata = "425t";
|
|
static char s_hp425s[] __initdata = "425s";
|
|
static char s_hp425e[] __initdata = "425e";
|
|
static char s_hp433t[] __initdata = "433t";
|
|
static char s_hp433s[] __initdata = "433s";
|
|
static char *hp300_models[] __initdata = {
|
|
[HP_320] = NULL,
|
|
[HP_330] = s_hp330,
|
|
[HP_340] = s_hp340,
|
|
[HP_345] = s_hp345,
|
|
[HP_350] = NULL,
|
|
[HP_360] = s_hp360,
|
|
[HP_370] = s_hp370,
|
|
[HP_375] = s_hp375,
|
|
[HP_380] = s_hp380,
|
|
[HP_385] = s_hp385,
|
|
[HP_400] = s_hp400,
|
|
[HP_425T] = s_hp425t,
|
|
[HP_425S] = s_hp425s,
|
|
[HP_425E] = s_hp425e,
|
|
[HP_433T] = s_hp433t,
|
|
[HP_433S] = s_hp433s,
|
|
};
|
|
|
|
static char hp300_model_name[13] = "HP9000/";
|
|
|
|
extern void hp300_reset(void);
|
|
#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
extern int hp300_setup_serial_console(void) __init;
|
|
#endif
|
|
|
|
int __init hp300_parse_bootinfo(const struct bi_record *record)
|
|
{
|
|
int unknown = 0;
|
|
const void *data = record->data;
|
|
|
|
switch (be16_to_cpu(record->tag)) {
|
|
case BI_HP300_MODEL:
|
|
hp300_model = be32_to_cpup(data);
|
|
break;
|
|
|
|
case BI_HP300_UART_SCODE:
|
|
hp300_uart_scode = be32_to_cpup(data);
|
|
break;
|
|
|
|
case BI_HP300_UART_ADDR:
|
|
/* serial port address: ignored here */
|
|
break;
|
|
|
|
default:
|
|
unknown = 1;
|
|
}
|
|
|
|
return unknown;
|
|
}
|
|
|
|
#ifdef CONFIG_HEARTBEAT
|
|
static void hp300_pulse(int x)
|
|
{
|
|
if (x)
|
|
blinken_leds(0x10, 0);
|
|
else
|
|
blinken_leds(0, 0x10);
|
|
}
|
|
#endif
|
|
|
|
static void hp300_get_model(char *model)
|
|
{
|
|
strcpy(model, hp300_model_name);
|
|
}
|
|
|
|
#define RTCBASE 0xf0420000
|
|
#define RTC_DATA 0x1
|
|
#define RTC_CMD 0x3
|
|
|
|
#define RTC_BUSY 0x02
|
|
#define RTC_DATA_RDY 0x01
|
|
|
|
#define rtc_busy() (in_8(RTCBASE + RTC_CMD) & RTC_BUSY)
|
|
#define rtc_data_available() (in_8(RTCBASE + RTC_CMD) & RTC_DATA_RDY)
|
|
#define rtc_status() (in_8(RTCBASE + RTC_CMD))
|
|
#define rtc_command(x) out_8(RTCBASE + RTC_CMD, (x))
|
|
#define rtc_read_data() (in_8(RTCBASE + RTC_DATA))
|
|
#define rtc_write_data(x) out_8(RTCBASE + RTC_DATA, (x))
|
|
|
|
#define RTC_SETREG 0xe0
|
|
#define RTC_WRITEREG 0xc2
|
|
#define RTC_READREG 0xc3
|
|
|
|
#define RTC_REG_SEC2 0
|
|
#define RTC_REG_SEC1 1
|
|
#define RTC_REG_MIN2 2
|
|
#define RTC_REG_MIN1 3
|
|
#define RTC_REG_HOUR2 4
|
|
#define RTC_REG_HOUR1 5
|
|
#define RTC_REG_WDAY 6
|
|
#define RTC_REG_DAY2 7
|
|
#define RTC_REG_DAY1 8
|
|
#define RTC_REG_MON2 9
|
|
#define RTC_REG_MON1 10
|
|
#define RTC_REG_YEAR2 11
|
|
#define RTC_REG_YEAR1 12
|
|
|
|
#define RTC_HOUR1_24HMODE 0x8
|
|
|
|
#define RTC_STAT_MASK 0xf0
|
|
#define RTC_STAT_RDY 0x40
|
|
|
|
static inline unsigned char hp300_rtc_read(unsigned char reg)
|
|
{
|
|
unsigned char s, ret;
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
|
|
while (rtc_busy());
|
|
rtc_command(RTC_SETREG);
|
|
while (rtc_busy());
|
|
rtc_write_data(reg);
|
|
while (rtc_busy());
|
|
rtc_command(RTC_READREG);
|
|
|
|
do {
|
|
while (!rtc_data_available());
|
|
s = rtc_status();
|
|
ret = rtc_read_data();
|
|
} while ((s & RTC_STAT_MASK) != RTC_STAT_RDY);
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline unsigned char hp300_rtc_write(unsigned char reg,
|
|
unsigned char val)
|
|
{
|
|
unsigned char s, ret;
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
|
|
while (rtc_busy());
|
|
rtc_command(RTC_SETREG);
|
|
while (rtc_busy());
|
|
rtc_write_data((val << 4) | reg);
|
|
while (rtc_busy());
|
|
rtc_command(RTC_WRITEREG);
|
|
while (rtc_busy());
|
|
rtc_command(RTC_READREG);
|
|
|
|
do {
|
|
while (!rtc_data_available());
|
|
s = rtc_status();
|
|
ret = rtc_read_data();
|
|
} while ((s & RTC_STAT_MASK) != RTC_STAT_RDY);
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int hp300_hwclk(int op, struct rtc_time *t)
|
|
{
|
|
if (!op) { /* read */
|
|
t->tm_sec = hp300_rtc_read(RTC_REG_SEC1) * 10 +
|
|
hp300_rtc_read(RTC_REG_SEC2);
|
|
t->tm_min = hp300_rtc_read(RTC_REG_MIN1) * 10 +
|
|
hp300_rtc_read(RTC_REG_MIN2);
|
|
t->tm_hour = (hp300_rtc_read(RTC_REG_HOUR1) & 3) * 10 +
|
|
hp300_rtc_read(RTC_REG_HOUR2);
|
|
t->tm_wday = -1;
|
|
t->tm_mday = hp300_rtc_read(RTC_REG_DAY1) * 10 +
|
|
hp300_rtc_read(RTC_REG_DAY2);
|
|
t->tm_mon = hp300_rtc_read(RTC_REG_MON1) * 10 +
|
|
hp300_rtc_read(RTC_REG_MON2) - 1;
|
|
t->tm_year = hp300_rtc_read(RTC_REG_YEAR1) * 10 +
|
|
hp300_rtc_read(RTC_REG_YEAR2);
|
|
if (t->tm_year <= 69)
|
|
t->tm_year += 100;
|
|
} else {
|
|
hp300_rtc_write(RTC_REG_SEC1, t->tm_sec / 10);
|
|
hp300_rtc_write(RTC_REG_SEC2, t->tm_sec % 10);
|
|
hp300_rtc_write(RTC_REG_MIN1, t->tm_min / 10);
|
|
hp300_rtc_write(RTC_REG_MIN2, t->tm_min % 10);
|
|
hp300_rtc_write(RTC_REG_HOUR1,
|
|
((t->tm_hour / 10) & 3) | RTC_HOUR1_24HMODE);
|
|
hp300_rtc_write(RTC_REG_HOUR2, t->tm_hour % 10);
|
|
hp300_rtc_write(RTC_REG_DAY1, t->tm_mday / 10);
|
|
hp300_rtc_write(RTC_REG_DAY2, t->tm_mday % 10);
|
|
hp300_rtc_write(RTC_REG_MON1, (t->tm_mon + 1) / 10);
|
|
hp300_rtc_write(RTC_REG_MON2, (t->tm_mon + 1) % 10);
|
|
if (t->tm_year >= 100)
|
|
t->tm_year -= 100;
|
|
hp300_rtc_write(RTC_REG_YEAR1, t->tm_year / 10);
|
|
hp300_rtc_write(RTC_REG_YEAR2, t->tm_year % 10);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int hp300_get_ss(void)
|
|
{
|
|
return hp300_rtc_read(RTC_REG_SEC1) * 10 +
|
|
hp300_rtc_read(RTC_REG_SEC2);
|
|
}
|
|
|
|
static void __init hp300_init_IRQ(void)
|
|
{
|
|
}
|
|
|
|
void __init config_hp300(void)
|
|
{
|
|
mach_sched_init = hp300_sched_init;
|
|
mach_init_IRQ = hp300_init_IRQ;
|
|
mach_get_model = hp300_get_model;
|
|
arch_gettimeoffset = hp300_gettimeoffset;
|
|
mach_hwclk = hp300_hwclk;
|
|
mach_get_ss = hp300_get_ss;
|
|
mach_reset = hp300_reset;
|
|
#ifdef CONFIG_HEARTBEAT
|
|
mach_heartbeat = hp300_pulse;
|
|
#endif
|
|
mach_max_dma_address = 0xffffffff;
|
|
|
|
if (hp300_model >= HP_330 && hp300_model <= HP_433S &&
|
|
hp300_model != HP_350) {
|
|
pr_info("Detected HP9000 model %s\n",
|
|
hp300_models[hp300_model-HP_320]);
|
|
strcat(hp300_model_name, hp300_models[hp300_model-HP_320]);
|
|
} else {
|
|
panic("Unknown HP9000 Model");
|
|
}
|
|
#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
hp300_setup_serial_console();
|
|
#endif
|
|
}
|