/*
* arch/m68k/q40/config.c
*
* Copyright (C) 1999 Richard Zidlicky
*
* originally based on:
*
* linux/bvme/config.c
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file README.legal in the main directory of this archive
* for more details.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/serial_reg.h>
#include <linux/rtc.h>
#include <linux/vt_kern.h>
#include <linux/bcd.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/pgtable.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/machdep.h>
#include <asm/q40_master.h>
extern void q40_init_IRQ(void);
static void q40_get_model(char *model);
extern void q40_sched_init(irq_handler_t handler);
static u32 q40_gettimeoffset(void);
static int q40_hwclk(int, struct rtc_time *);
static unsigned int q40_get_ss(void);
static int q40_set_clock_mmss(unsigned long);
static int q40_get_rtc_pll(struct rtc_pll_info *pll);
static int q40_set_rtc_pll(struct rtc_pll_info *pll);
extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/);
static void q40_mem_console_write(struct console *co, const char *b,
unsigned int count);
extern int ql_ticks;
static struct console q40_console_driver = {
.name = "debug",
.write = q40_mem_console_write,
.flags = CON_PRINTBUFFER,
.index = -1,
};
/* early debugging function:*/
extern char *q40_mem_cptr; /*=(char *)0xff020000;*/
static int _cpleft;
static void q40_mem_console_write(struct console *co, const char *s,
unsigned int count)
{
const char *p = s;
if (count < _cpleft) {
while (count-- > 0) {
*q40_mem_cptr = *p++;
q40_mem_cptr += 4;
_cpleft--;
}
}
}
static int __init q40_debug_setup(char *arg)
{
/* useful for early debugging stages - writes kernel messages into SRAM */
if (MACH_IS_Q40 && !strncmp(arg, "mem", 3)) {
/*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/
_cpleft = 2000 - ((long)q40_mem_cptr-0xff020000) / 4;
register_console(&q40_console_driver);
}
return 0;
}
early_param("debug", q40_debug_setup);
#if 0
void printq40(char *str)
{
int l = strlen(str);
char *p = q40_mem_cptr;
while (l-- > 0 && _cpleft-- > 0) {
*p = *str++;
p += 4;
}
q40_mem_cptr = p;
}
#endif
static int halted;
#ifdef [31mCONFIG_HEARTBEAT[0m
static void q40_heartbeat(int on)
{
if (halted)
return;
if (on)
Q40_LED_ON();
else
Q40_LED_OFF();
}
#endif
static void q40_reset(void)
{
halted = 1;
printk("\n\n*******************************************\n"
"Called q40_reset : press the RESET button!!\n"
"*******************************************\n");
Q40_LED_ON();
while (1)
;
}
static void q40_halt(void)
{
halted = 1;
printk("\n\n*******************\n"
" Called q40_halt\n"
"*******************\n");
Q40_LED_ON();
while (1)
;
}
static void q40_get_model(char *model)
{
sprintf(model, "Q40");
}
static unsigned int serports[] =
{
0x3f8,0x2f8,0x3e8,0x2e8,0
};
static void __init q40_disable_irqs(void)
{
unsigned i, j;
j = 0;
while ((i = serports[j++]))
outb(0, i + UART_IER);
master_outb(0, EXT_ENABLE_REG);
master_outb(0, KEY_IRQ_ENABLE_REG);
}
void __init config_q40(void)
{
mach_sched_init = q40_sched_init;
mach_init_IRQ = q40_init_IRQ;
arch_gettimeoffset = q40_gettimeoffset;
mach_hwclk = q40_hwclk;
mach_get_ss = q40_get_ss;
mach_get_rtc_pll = q40_get_rtc_pll;
mach_set_rtc_pll = q40_set_rtc_pll;
mach_set_clock_mmss = q40_set_clock_mmss;
mach_reset = q40_reset;
mach_get_model = q40_get_model;
#if IS_ENABLED([31mCONFIG_INPUT_M68K_BEEP[0m)
mach_beep = q40_mksound;
#endif
#ifdef [31mCONFIG_HEARTBEAT[0m
mach_heartbeat = q40_heartbeat;
#endif
mach_halt = q40_halt;
/* disable a few things that SMSQ might have left enabled */
q40_disable_irqs();
/* no DMA at all, but ide-scsi requires it.. make sure
* all physical RAM fits into the boundary - otherwise
* allocator may play costly and useless tricks */
mach_max_dma_address = 1024*1024*1024;
}
int __init q40_parse_bootinfo(const struct bi_record *rec)
{
return 1;
}
static u32 q40_gettimeoffset(void)
{
return 5000 * (ql_ticks != 0) * 1000;
}
/*
* Looks like op is non-zero for setting the clock, and zero for
* reading the clock.
*
* struct hwclk_time {
* unsigned sec; 0..59
* unsigned min; 0..59
* unsigned hour; 0..23
* unsigned day; 1..31
* unsigned mon; 0..11
* unsigned year; 00...
* int wday; 0..6, 0 is Sunday, -1 means unknown/don't set
* };
*/
static int q40_hwclk(int op, struct rtc_time *t)
{
if (op) {
/* Write.... */
Q40_RTC_CTRL |= Q40_RTC_WRITE;
Q40_RTC_SECS = bin2bcd(t->tm_sec);
Q40_RTC_MINS = bin2bcd(t->tm_min);
Q40_RTC_HOUR = bin2bcd(t->tm_hour);
Q40_RTC_DATE = bin2bcd(t->tm_mday);
Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1);
Q40_RTC_YEAR = bin2bcd(t->tm_year%100);
if (t->tm_wday >= 0)
Q40_RTC_DOW = bin2bcd(t->tm_wday+1);
Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
} else {
/* Read.... */
Q40_RTC_CTRL |= Q40_RTC_READ;
t->tm_year = bcd2bin (Q40_RTC_YEAR);
t->tm_mon = bcd2bin (Q40_RTC_MNTH)-1;
t->tm_mday = bcd2bin (Q40_RTC_DATE);
t->tm_hour = bcd2bin (Q40_RTC_HOUR);
t->tm_min = bcd2bin (Q40_RTC_MINS);
t->tm_sec = bcd2bin (Q40_RTC_SECS);
Q40_RTC_CTRL &= ~(Q40_RTC_READ);
if (t->tm_year < 70)
t->tm_year += 100;
t->tm_wday = bcd2bin(Q40_RTC_DOW)-1;
}
return 0;
}
static unsigned int q40_get_ss(void)
{
return bcd2bin(Q40_RTC_SECS);
}
/*
* Set the minutes and seconds from seconds value 'nowtime'. Fail if
* clock is out by > 30 minutes. Logic lifted from atari code.
*/
static int q40_set_clock_mmss(unsigned long nowtime)
{
int retval = 0;
short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
int rtc_minutes;
rtc_minutes = bcd2bin(Q40_RTC_MINS);
if ((rtc_minutes < real_minutes ?
real_minutes - rtc_minutes :
rtc_minutes - real_minutes) < 30) {
Q40_RTC_CTRL |= Q40_RTC_WRITE;
Q40_RTC_MINS = bin2bcd(real_minutes);
Q40_RTC_SECS = bin2bcd(real_seconds);
Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
} else
retval = -1;
return retval;
}
/* get and set PLL calibration of RTC clock */
#define Q40_RTC_PLL_MASK ((1<<5)-1)
#define Q40_RTC_PLL_SIGN (1<<5)
static int q40_get_rtc_pll(struct rtc_pll_info *pll)
{
int tmp = Q40_RTC_CTRL;
pll->pll_value = tmp & Q40_RTC_PLL_MASK;
if (tmp & Q40_RTC_PLL_SIGN)
pll->pll_value = -pll->pll_value;
pll->pll_max = 31;
pll->pll_min = -31;
pll->pll_posmult = 512;
pll->pll_negmult = 256;
pll->pll_clock = 125829120;
return 0;
}
static int q40_set_rtc_pll(struct rtc_pll_info *pll)
{
if (!pll->pll_ctrl) {
/* the docs are a bit unclear so I am doublesetting */
/* RTC_WRITE here ... */
int tmp = (pll->pll_value & 31) | (pll->pll_value<0 ? 32 : 0) |
Q40_RTC_WRITE;
Q40_RTC_CTRL |= Q40_RTC_WRITE;
Q40_RTC_CTRL = tmp;
Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
return 0;
} else
return -EINVAL;
}
static __init int q40_add_kbd_device(void)
{
struct platform_device *pdev;
if (!MACH_IS_Q40)
return -ENODEV;
pdev = platform_device_register_simple("q40kbd", -1, NULL, 0);
return PTR_ERR_OR_ZERO(pdev);
}
arch_initcall(q40_add_kbd_device);