1/* 2 * arch/m68k/q40/config.c 3 * 4 * Copyright (C) 1999 Richard Zidlicky 5 * 6 * originally based on: 7 * 8 * linux/bvme/config.c 9 * 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 12 * for more details. 13 */ 14 15#include <linux/config.h> 16#include <linux/types.h> 17#include <linux/kernel.h> 18#include <linux/mm.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> 27 28#include <asm/io.h> 29#include <asm/rtc.h> 30#include <asm/bootinfo.h> 31#include <asm/system.h> 32#include <asm/pgtable.h> 33#include <asm/setup.h> 34#include <asm/irq.h> 35#include <asm/traps.h> 36#include <asm/rtc.h> 37#include <asm/machdep.h> 38#include <asm/q40_master.h> 39#include <asm/keyboard.h> 40 41extern void floppy_setup(char *str, int *ints); 42 43extern int q40kbd_translate(unsigned char scancode, unsigned char *keycode, 44 char raw_mode); 45extern void q40_process_int (int level, struct pt_regs *regs); 46extern void (*q40_sys_default_handler[]) (int, void *, struct pt_regs *); /* added just for debugging */ 47extern void q40_init_IRQ (void); 48extern void q40_free_irq (unsigned int, void *); 49extern int q40_get_irq_list (char *); 50extern void q40_enable_irq (unsigned int); 51extern void q40_disable_irq (unsigned int); 52static void q40_get_model(char *model); 53static int q40_get_hardware_list(char *buffer); 54extern int q40_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id); 55extern void q40_sched_init(void (*handler)(int, void *, struct pt_regs *)); 56 57extern unsigned long q40_gettimeoffset (void); 58extern void q40_gettod (int *year, int *mon, int *day, int *hour, 59 int *min, int *sec); 60extern int q40_hwclk (int, struct rtc_time *); 61extern int q40_set_clock_mmss (unsigned long); 62extern void q40_reset (void); 63void q40_halt(void); 64extern void q40_waitbut(void); 65void q40_set_vectors (void); 66 67void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/ ); 68 69extern char *saved_command_line; 70extern char m68k_debug_device[]; 71static void q40_mem_console_write(struct console *co, const char *b, 72 unsigned int count); 73 74extern int ql_ticks; 75 76static struct console q40_console_driver = { 77 name: "debug", 78 flags: CON_PRINTBUFFER, 79 index: -1, 80}; 81 82 83/* early debugging function:*/ 84extern char *q40_mem_cptr; /*=(char *)0xff020000;*/ 85static int _cpleft; 86 87 88static void q40_mem_console_write(struct console *co, const char *s, 89 unsigned int count) 90{ 91 char *p=(char *)s; 92 93 if (count<_cpleft) 94 while (count-- >0){ 95 *q40_mem_cptr=*p++; 96 q40_mem_cptr+=4; 97 _cpleft--; 98 } 99} 100 101 102static int halted=0; 103 104#ifdef CONFIG_HEARTBEAT 105static void q40_heartbeat(int on) 106{ 107 if (halted) return; 108 109 if (on) 110 Q40_LED_ON(); 111 else 112 Q40_LED_OFF(); 113} 114#endif 115 116void q40_reset() 117{ 118 halted=1; 119 printk ("\n\n*******************************************\n" 120 "Called q40_reset : press the RESET button!! \n" 121 "*******************************************\n"); 122 Q40_LED_ON(); 123 while(1) ; 124} 125void q40_halt() 126{ 127 halted=1; 128 printk ("\n\n*******************\n" 129 " Called q40_halt\n" 130 "*******************\n"); 131 Q40_LED_ON(); 132 while(1) ; 133} 134 135static void q40_get_model(char *model) 136{ 137 sprintf(model, "Q40"); 138} 139 140/* No hardware options on Q40? */ 141 142static int q40_get_hardware_list(char *buffer) 143{ 144 *buffer = '\0'; 145 return 0; 146} 147 148static unsigned int serports[]={0x3f8,0x2f8,0x3e8,0x2e8,0}; 149void q40_disable_irqs(void) 150{ 151 unsigned i,j; 152 153 j=0; 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); 157} 158 159void __init config_q40(void) 160{ 161 mach_sched_init = q40_sched_init; 162 163#ifdef CONFIG_VT 164 mach_keyb_init = q40kbd_init_hw; 165 mach_kbd_translate = q40kbd_translate; 166 kd_mksound = q40_mksound; 167#endif 168 mach_init_IRQ = q40_init_IRQ; 169 mach_gettimeoffset = q40_gettimeoffset; 170 mach_gettod = q40_gettod; 171 mach_hwclk = q40_hwclk; 172 mach_set_clock_mmss = q40_set_clock_mmss; 173 174 mach_reset = q40_reset; 175 mach_free_irq = q40_free_irq; 176 mach_process_int = q40_process_int; 177 mach_get_irq_list = q40_get_irq_list; 178 mach_request_irq = q40_request_irq; 179 enable_irq = q40_enable_irq; 180 disable_irq = q40_disable_irq; 181 mach_default_handler = &q40_sys_default_handler; 182 mach_get_model = q40_get_model; 183 mach_get_hardware_list = q40_get_hardware_list; 184 185#ifdef CONFIG_MAGIC_SYSRQ 186 mach_sysrq_key = 0x54; 187#endif 188#ifdef CONFIG_HEARTBEAT 189 mach_heartbeat = q40_heartbeat; 190#endif 191 mach_halt = q40_halt; 192#ifdef CONFIG_DUMMY_CONSOLE 193 conswitchp = &dummy_con; 194#endif 195 196 /* disable a few things that SMSQ might have left enabled */ 197 q40_disable_irqs(); 198 199 /* no DMA at all, but ide-scsi requires it.. make sure 200 * all physical RAM fits into the boundary - otherwise 201 * allocator may play costly and useless tricks */ 202 mach_max_dma_address = 1024*1024*1024; 203 204 /* useful for early debugging stages - writes kernel messages into SRAM */ 205 if (!strncmp( m68k_debug_device,"mem",3 )) 206 { 207 /*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/ 208 _cpleft=2000-((long)q40_mem_cptr-0xff020000)/4; 209 q40_console_driver.write = q40_mem_console_write; 210 register_console(&q40_console_driver); 211 } 212} 213 214 215int q40_parse_bootinfo(const struct bi_record *rec) 216{ 217 return 1; 218} 219 220 221static inline unsigned char bcd2bin (unsigned char b) 222{ 223 return ((b>>4)*10 + (b&15)); 224} 225 226static inline unsigned char bin2bcd (unsigned char b) 227{ 228 return (((b/10)*16) + (b%10)); 229} 230 231 232unsigned long q40_gettimeoffset (void) 233{ 234 return 5000*(ql_ticks!=0); 235} 236 237extern void q40_gettod (int *year, int *mon, int *day, int *hour, 238 int *min, int *sec) 239{ 240 Q40_RTC_CTRL |= Q40_RTC_READ; 241 *year = bcd2bin (Q40_RTC_YEAR); 242 *mon = bcd2bin (Q40_RTC_MNTH); 243 *day = bcd2bin (Q40_RTC_DATE); 244 *hour = bcd2bin (Q40_RTC_HOUR); 245 *min = bcd2bin (Q40_RTC_MINS); 246 *sec = bcd2bin (Q40_RTC_SECS); 247 Q40_RTC_CTRL &= ~(Q40_RTC_READ); 248 249} 250 251 252 253/* 254 * Looks like op is non-zero for setting the clock, and zero for 255 * reading the clock. 256 * 257 * struct hwclk_time { 258 * unsigned sec; 0..59 259 * unsigned min; 0..59 260 * unsigned hour; 0..23 261 * unsigned day; 1..31 262 * unsigned mon; 0..11 263 * unsigned year; 00... 264 * int wday; 0..6, 0 is Sunday, -1 means unknown/don't set 265 * }; 266 */ 267 268int q40_hwclk(int op, struct rtc_time *t) 269{ 270 if (op) 271 { /* Write.... */ 272 Q40_RTC_CTRL |= Q40_RTC_WRITE; 273 274 Q40_RTC_SECS = bin2bcd(t->tm_sec); 275 Q40_RTC_MINS = bin2bcd(t->tm_min); 276 Q40_RTC_HOUR = bin2bcd(t->tm_hour); 277 Q40_RTC_DATE = bin2bcd(t->tm_mday); 278 Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1); 279 Q40_RTC_YEAR = bin2bcd(t->tm_year%100); 280 if (t->tm_wday >= 0) 281 Q40_RTC_DOW = bin2bcd(t->tm_wday+1); 282 283 Q40_RTC_CTRL &= ~(Q40_RTC_WRITE); 284 } 285 else 286 { /* Read.... */ 287 Q40_RTC_CTRL |= Q40_RTC_READ; 288 289 t->tm_year = bcd2bin (Q40_RTC_YEAR); 290 t->tm_mon = bcd2bin (Q40_RTC_MNTH)-1; 291 t->tm_mday = bcd2bin (Q40_RTC_DATE); 292 t->tm_hour = bcd2bin (Q40_RTC_HOUR); 293 t->tm_min = bcd2bin (Q40_RTC_MINS); 294 t->tm_sec = bcd2bin (Q40_RTC_SECS); 295 296 Q40_RTC_CTRL &= ~(Q40_RTC_READ); 297 298 if (t->tm_year < 70) 299 t->tm_year += 100; 300 t->tm_wday = bcd2bin(Q40_RTC_DOW)-1; 301 302 } 303 304 return 0; 305} 306 307/* 308 * Set the minutes and seconds from seconds value 'nowtime'. Fail if 309 * clock is out by > 30 minutes. Logic lifted from atari code. 310 */ 311 312int q40_set_clock_mmss (unsigned long nowtime) 313{ 314 int retval = 0; 315 short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60; 316 317 int rtc_minutes; 318 319 320 rtc_minutes = bcd2bin (Q40_RTC_MINS); 321 322 if ((rtc_minutes < real_minutes 323 ? real_minutes - rtc_minutes 324 : rtc_minutes - real_minutes) < 30) 325 { 326 Q40_RTC_CTRL |= Q40_RTC_WRITE; 327 Q40_RTC_MINS = bin2bcd(real_minutes); 328 Q40_RTC_SECS = bin2bcd(real_seconds); 329 Q40_RTC_CTRL &= ~(Q40_RTC_WRITE); 330 } 331 else 332 retval = -1; 333 334 335 return retval; 336} 337 338