1 /* 2 * linux/arch/m68k/hp300/config.c 3 * 4 * Copyright (C) 1998 Philip Blundell <philb@gnu.org> 5 * 6 * This file contains the HP300-specific initialisation code. It gets 7 * called by setup.c. 8 */ 9 10 #include <linux/module.h> 11 #include <linux/init.h> 12 #include <linux/string.h> 13 #include <linux/kernel.h> 14 #include <linux/console.h> 15 16 #include <asm/bootinfo.h> 17 #include <asm/machdep.h> 18 #include <asm/blinken.h> 19 #include <asm/io.h> /* readb() and writeb() */ 20 #include <asm/hp300hw.h> 21 #include <asm/rtc.h> 22 23 #include "time.h" 24 25 unsigned long hp300_model; 26 unsigned long hp300_uart_scode = -1; 27 unsigned char ledstate; 28 29 static char s_hp330[] __initdata = "330"; 30 static char s_hp340[] __initdata = "340"; 31 static char s_hp345[] __initdata = "345"; 32 static char s_hp360[] __initdata = "360"; 33 static char s_hp370[] __initdata = "370"; 34 static char s_hp375[] __initdata = "375"; 35 static char s_hp380[] __initdata = "380"; 36 static char s_hp385[] __initdata = "385"; 37 static char s_hp400[] __initdata = "400"; 38 static char s_hp425t[] __initdata = "425t"; 39 static char s_hp425s[] __initdata = "425s"; 40 static char s_hp425e[] __initdata = "425e"; 41 static char s_hp433t[] __initdata = "433t"; 42 static char s_hp433s[] __initdata = "433s"; 43 static char *hp300_models[] __initdata = { 44 [HP_320] = NULL, 45 [HP_330] = s_hp330, 46 [HP_340] = s_hp340, 47 [HP_345] = s_hp345, 48 [HP_350] = NULL, 49 [HP_360] = s_hp360, 50 [HP_370] = s_hp370, 51 [HP_375] = s_hp375, 52 [HP_380] = s_hp380, 53 [HP_385] = s_hp385, 54 [HP_400] = s_hp400, 55 [HP_425T] = s_hp425t, 56 [HP_425S] = s_hp425s, 57 [HP_425E] = s_hp425e, 58 [HP_433T] = s_hp433t, 59 [HP_433S] = s_hp433s, 60 }; 61 62 static char hp300_model_name[13] = "HP9000/"; 63 64 extern void hp300_reset(void); 65 #ifdef CONFIG_SERIAL_8250_CONSOLE 66 extern int hp300_setup_serial_console(void) __init; 67 #endif 68 69 int __init hp300_parse_bootinfo(const struct bi_record *record) 70 { 71 int unknown = 0; 72 const unsigned long *data = record->data; 73 74 switch (record->tag) { 75 case BI_HP300_MODEL: 76 hp300_model = *data; 77 break; 78 79 case BI_HP300_UART_SCODE: 80 hp300_uart_scode = *data; 81 break; 82 83 case BI_HP300_UART_ADDR: 84 /* serial port address: ignored here */ 85 break; 86 87 default: 88 unknown = 1; 89 } 90 91 return unknown; 92 } 93 94 #ifdef CONFIG_HEARTBEAT 95 static void hp300_pulse(int x) 96 { 97 if (x) 98 blinken_leds(0x10, 0); 99 else 100 blinken_leds(0, 0x10); 101 } 102 #endif 103 104 static void hp300_get_model(char *model) 105 { 106 strcpy(model, hp300_model_name); 107 } 108 109 #define RTCBASE 0xf0420000 110 #define RTC_DATA 0x1 111 #define RTC_CMD 0x3 112 113 #define RTC_BUSY 0x02 114 #define RTC_DATA_RDY 0x01 115 116 #define rtc_busy() (in_8(RTCBASE + RTC_CMD) & RTC_BUSY) 117 #define rtc_data_available() (in_8(RTCBASE + RTC_CMD) & RTC_DATA_RDY) 118 #define rtc_status() (in_8(RTCBASE + RTC_CMD)) 119 #define rtc_command(x) out_8(RTCBASE + RTC_CMD, (x)) 120 #define rtc_read_data() (in_8(RTCBASE + RTC_DATA)) 121 #define rtc_write_data(x) out_8(RTCBASE + RTC_DATA, (x)) 122 123 #define RTC_SETREG 0xe0 124 #define RTC_WRITEREG 0xc2 125 #define RTC_READREG 0xc3 126 127 #define RTC_REG_SEC2 0 128 #define RTC_REG_SEC1 1 129 #define RTC_REG_MIN2 2 130 #define RTC_REG_MIN1 3 131 #define RTC_REG_HOUR2 4 132 #define RTC_REG_HOUR1 5 133 #define RTC_REG_WDAY 6 134 #define RTC_REG_DAY2 7 135 #define RTC_REG_DAY1 8 136 #define RTC_REG_MON2 9 137 #define RTC_REG_MON1 10 138 #define RTC_REG_YEAR2 11 139 #define RTC_REG_YEAR1 12 140 141 #define RTC_HOUR1_24HMODE 0x8 142 143 #define RTC_STAT_MASK 0xf0 144 #define RTC_STAT_RDY 0x40 145 146 static inline unsigned char hp300_rtc_read(unsigned char reg) 147 { 148 unsigned char s, ret; 149 unsigned long flags; 150 151 local_irq_save(flags); 152 153 while (rtc_busy()); 154 rtc_command(RTC_SETREG); 155 while (rtc_busy()); 156 rtc_write_data(reg); 157 while (rtc_busy()); 158 rtc_command(RTC_READREG); 159 160 do { 161 while (!rtc_data_available()); 162 s = rtc_status(); 163 ret = rtc_read_data(); 164 } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY); 165 166 local_irq_restore(flags); 167 168 return ret; 169 } 170 171 static inline unsigned char hp300_rtc_write(unsigned char reg, 172 unsigned char val) 173 { 174 unsigned char s, ret; 175 unsigned long flags; 176 177 local_irq_save(flags); 178 179 while (rtc_busy()); 180 rtc_command(RTC_SETREG); 181 while (rtc_busy()); 182 rtc_write_data((val << 4) | reg); 183 while (rtc_busy()); 184 rtc_command(RTC_WRITEREG); 185 while (rtc_busy()); 186 rtc_command(RTC_READREG); 187 188 do { 189 while (!rtc_data_available()); 190 s = rtc_status(); 191 ret = rtc_read_data(); 192 } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY); 193 194 local_irq_restore(flags); 195 196 return ret; 197 } 198 199 static int hp300_hwclk(int op, struct rtc_time *t) 200 { 201 if (!op) { /* read */ 202 t->tm_sec = hp300_rtc_read(RTC_REG_SEC1) * 10 + 203 hp300_rtc_read(RTC_REG_SEC2); 204 t->tm_min = hp300_rtc_read(RTC_REG_MIN1) * 10 + 205 hp300_rtc_read(RTC_REG_MIN2); 206 t->tm_hour = (hp300_rtc_read(RTC_REG_HOUR1) & 3) * 10 + 207 hp300_rtc_read(RTC_REG_HOUR2); 208 t->tm_wday = -1; 209 t->tm_mday = hp300_rtc_read(RTC_REG_DAY1) * 10 + 210 hp300_rtc_read(RTC_REG_DAY2); 211 t->tm_mon = hp300_rtc_read(RTC_REG_MON1) * 10 + 212 hp300_rtc_read(RTC_REG_MON2) - 1; 213 t->tm_year = hp300_rtc_read(RTC_REG_YEAR1) * 10 + 214 hp300_rtc_read(RTC_REG_YEAR2); 215 if (t->tm_year <= 69) 216 t->tm_year += 100; 217 } else { 218 hp300_rtc_write(RTC_REG_SEC1, t->tm_sec / 10); 219 hp300_rtc_write(RTC_REG_SEC2, t->tm_sec % 10); 220 hp300_rtc_write(RTC_REG_MIN1, t->tm_min / 10); 221 hp300_rtc_write(RTC_REG_MIN2, t->tm_min % 10); 222 hp300_rtc_write(RTC_REG_HOUR1, 223 ((t->tm_hour / 10) & 3) | RTC_HOUR1_24HMODE); 224 hp300_rtc_write(RTC_REG_HOUR2, t->tm_hour % 10); 225 hp300_rtc_write(RTC_REG_DAY1, t->tm_mday / 10); 226 hp300_rtc_write(RTC_REG_DAY2, t->tm_mday % 10); 227 hp300_rtc_write(RTC_REG_MON1, (t->tm_mon + 1) / 10); 228 hp300_rtc_write(RTC_REG_MON2, (t->tm_mon + 1) % 10); 229 if (t->tm_year >= 100) 230 t->tm_year -= 100; 231 hp300_rtc_write(RTC_REG_YEAR1, t->tm_year / 10); 232 hp300_rtc_write(RTC_REG_YEAR2, t->tm_year % 10); 233 } 234 235 return 0; 236 } 237 238 static unsigned int hp300_get_ss(void) 239 { 240 return hp300_rtc_read(RTC_REG_SEC1) * 10 + 241 hp300_rtc_read(RTC_REG_SEC2); 242 } 243 244 static void __init hp300_init_IRQ(void) 245 { 246 } 247 248 void __init config_hp300(void) 249 { 250 mach_sched_init = hp300_sched_init; 251 mach_init_IRQ = hp300_init_IRQ; 252 mach_get_model = hp300_get_model; 253 mach_gettimeoffset = hp300_gettimeoffset; 254 mach_hwclk = hp300_hwclk; 255 mach_get_ss = hp300_get_ss; 256 mach_reset = hp300_reset; 257 #ifdef CONFIG_HEARTBEAT 258 mach_heartbeat = hp300_pulse; 259 #endif 260 mach_max_dma_address = 0xffffffff; 261 262 if (hp300_model >= HP_330 && hp300_model <= HP_433S && hp300_model != HP_350) { 263 printk(KERN_INFO "Detected HP9000 model %s\n", hp300_models[hp300_model-HP_320]); 264 strcat(hp300_model_name, hp300_models[hp300_model-HP_320]); 265 } 266 else { 267 panic("Unknown HP9000 Model"); 268 } 269 #ifdef CONFIG_SERIAL_8250_CONSOLE 270 hp300_setup_serial_console(); 271 #endif 272 } 273