2 * arch/m68k/q40/config.c
4 * Copyright (C) 1999 Richard Zidlicky
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file README.legal in the main directory of this archive
15 #include <linux/config.h>
16 #include <linux/types.h>
17 #include <linux/kernel.h>
19 #include <linux/tty.h>
20 #include <linux/console.h>
21 #include <linux/linkage.h>
22 #include <linux/init.h>
23 #include <linux/major.h>
24 #include <linux/serial_reg.h>
25 #include <linux/rtc.h>
26 #include <linux/vt_kern.h>
30 #include <asm/bootinfo.h>
31 #include <asm/system.h>
32 #include <asm/pgtable.h>
33 #include <asm/setup.h>
35 #include <asm/traps.h>
36 #include <asm/machdep.h>
37 #include <asm/q40_master.h>
39 extern irqreturn_t q40_process_int (int level, struct pt_regs *regs);
40 extern void q40_init_IRQ (void);
41 static void q40_get_model(char *model);
42 static int q40_get_hardware_list(char *buffer);
43 extern void q40_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
45 extern unsigned long q40_gettimeoffset (void);
46 extern int q40_hwclk (int, struct rtc_time *);
47 extern unsigned int q40_get_ss (void);
48 extern int q40_set_clock_mmss (unsigned long);
49 static int q40_get_rtc_pll(struct rtc_pll_info *pll);
50 static int q40_set_rtc_pll(struct rtc_pll_info *pll);
51 extern void q40_reset (void);
53 extern void q40_waitbut(void);
54 void q40_set_vectors (void);
56 extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/ );
58 extern char m68k_debug_device[];
59 static void q40_mem_console_write(struct console *co, const char *b,
64 static struct console q40_console_driver = {
66 .flags = CON_PRINTBUFFER,
71 /* early debugging function:*/
72 extern char *q40_mem_cptr; /*=(char *)0xff020000;*/
75 static void q40_mem_console_write(struct console *co, const char *s,
88 void printq40(char *str)
93 while (l-- >0 && _cpleft-- >0)
104 #ifdef CONFIG_HEARTBEAT
105 static void q40_heartbeat(int on)
119 printk ("\n\n*******************************************\n"
120 "Called q40_reset : press the RESET button!! \n"
121 "*******************************************\n");
128 printk ("\n\n*******************\n"
130 "*******************\n");
135 static void q40_get_model(char *model)
137 sprintf(model, "Q40");
140 /* No hardware options on Q40? */
142 static int q40_get_hardware_list(char *buffer)
148 static unsigned int serports[]={0x3f8,0x2f8,0x3e8,0x2e8,0};
149 void q40_disable_irqs(void)
154 while((i=serports[j++])) outb(0,i+UART_IER);
155 master_outb(0,EXT_ENABLE_REG);
156 master_outb(0,KEY_IRQ_ENABLE_REG);
159 void __init config_q40(void)
161 mach_sched_init = q40_sched_init;
163 mach_init_IRQ = q40_init_IRQ;
164 mach_gettimeoffset = q40_gettimeoffset;
165 mach_hwclk = q40_hwclk;
166 mach_get_ss = q40_get_ss;
167 mach_get_rtc_pll = q40_get_rtc_pll;
168 mach_set_rtc_pll = q40_set_rtc_pll;
169 mach_set_clock_mmss = q40_set_clock_mmss;
171 mach_reset = q40_reset;
172 mach_get_model = q40_get_model;
173 mach_get_hardware_list = q40_get_hardware_list;
175 #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
176 mach_beep = q40_mksound;
178 #ifdef CONFIG_HEARTBEAT
179 mach_heartbeat = q40_heartbeat;
181 mach_halt = q40_halt;
183 /* disable a few things that SMSQ might have left enabled */
186 /* no DMA at all, but ide-scsi requires it.. make sure
187 * all physical RAM fits into the boundary - otherwise
188 * allocator may play costly and useless tricks */
189 mach_max_dma_address = 1024*1024*1024;
191 /* useful for early debugging stages - writes kernel messages into SRAM */
192 if (!strncmp( m68k_debug_device,"mem",3 ))
194 /*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/
195 _cpleft=2000-((long)q40_mem_cptr-0xff020000)/4;
196 q40_console_driver.write = q40_mem_console_write;
197 register_console(&q40_console_driver);
202 int q40_parse_bootinfo(const struct bi_record *rec)
208 static inline unsigned char bcd2bin (unsigned char b)
210 return ((b>>4)*10 + (b&15));
213 static inline unsigned char bin2bcd (unsigned char b)
215 return (((b/10)*16) + (b%10));
219 unsigned long q40_gettimeoffset (void)
221 return 5000*(ql_ticks!=0);
226 * Looks like op is non-zero for setting the clock, and zero for
229 * struct hwclk_time {
230 * unsigned sec; 0..59
231 * unsigned min; 0..59
232 * unsigned hour; 0..23
233 * unsigned day; 1..31
234 * unsigned mon; 0..11
235 * unsigned year; 00...
236 * int wday; 0..6, 0 is Sunday, -1 means unknown/don't set
240 int q40_hwclk(int op, struct rtc_time *t)
244 Q40_RTC_CTRL |= Q40_RTC_WRITE;
246 Q40_RTC_SECS = bin2bcd(t->tm_sec);
247 Q40_RTC_MINS = bin2bcd(t->tm_min);
248 Q40_RTC_HOUR = bin2bcd(t->tm_hour);
249 Q40_RTC_DATE = bin2bcd(t->tm_mday);
250 Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1);
251 Q40_RTC_YEAR = bin2bcd(t->tm_year%100);
253 Q40_RTC_DOW = bin2bcd(t->tm_wday+1);
255 Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
259 Q40_RTC_CTRL |= Q40_RTC_READ;
261 t->tm_year = bcd2bin (Q40_RTC_YEAR);
262 t->tm_mon = bcd2bin (Q40_RTC_MNTH)-1;
263 t->tm_mday = bcd2bin (Q40_RTC_DATE);
264 t->tm_hour = bcd2bin (Q40_RTC_HOUR);
265 t->tm_min = bcd2bin (Q40_RTC_MINS);
266 t->tm_sec = bcd2bin (Q40_RTC_SECS);
268 Q40_RTC_CTRL &= ~(Q40_RTC_READ);
272 t->tm_wday = bcd2bin(Q40_RTC_DOW)-1;
279 unsigned int q40_get_ss(void)
281 return bcd2bin(Q40_RTC_SECS);
285 * Set the minutes and seconds from seconds value 'nowtime'. Fail if
286 * clock is out by > 30 minutes. Logic lifted from atari code.
289 int q40_set_clock_mmss (unsigned long nowtime)
292 short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
297 rtc_minutes = bcd2bin (Q40_RTC_MINS);
299 if ((rtc_minutes < real_minutes
300 ? real_minutes - rtc_minutes
301 : rtc_minutes - real_minutes) < 30)
303 Q40_RTC_CTRL |= Q40_RTC_WRITE;
304 Q40_RTC_MINS = bin2bcd(real_minutes);
305 Q40_RTC_SECS = bin2bcd(real_seconds);
306 Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
316 /* get and set PLL calibration of RTC clock */
317 #define Q40_RTC_PLL_MASK ((1<<5)-1)
318 #define Q40_RTC_PLL_SIGN (1<<5)
320 static int q40_get_rtc_pll(struct rtc_pll_info *pll)
322 int tmp=Q40_RTC_CTRL;
323 pll->pll_value = tmp & Q40_RTC_PLL_MASK;
324 if (tmp & Q40_RTC_PLL_SIGN)
325 pll->pll_value = -pll->pll_value;
328 pll->pll_posmult=512;
329 pll->pll_negmult=256;
330 pll->pll_clock=125829120;
334 static int q40_set_rtc_pll(struct rtc_pll_info *pll)
337 /* the docs are a bit unclear so I am doublesetting */
338 /* RTC_WRITE here ... */
339 int tmp = (pll->pll_value & 31) | (pll->pll_value<0 ? 32 : 0) |
341 Q40_RTC_CTRL |= Q40_RTC_WRITE;
343 Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);