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