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 hp300_ledstate; 28 EXPORT_SYMBOL(hp300_ledstate); 29 30 static char s_hp330[] __initdata = "330"; 31 static char s_hp340[] __initdata = "340"; 32 static char s_hp345[] __initdata = "345"; 33 static char s_hp360[] __initdata = "360"; 34 static char s_hp370[] __initdata = "370"; 35 static char s_hp375[] __initdata = "375"; 36 static char s_hp380[] __initdata = "380"; 37 static char s_hp385[] __initdata = "385"; 38 static char s_hp400[] __initdata = "400"; 39 static char s_hp425t[] __initdata = "425t"; 40 static char s_hp425s[] __initdata = "425s"; 41 static char s_hp425e[] __initdata = "425e"; 42 static char s_hp433t[] __initdata = "433t"; 43 static char s_hp433s[] __initdata = "433s"; 44 static char *hp300_models[] __initdata = { 45 [HP_320] = NULL, 46 [HP_330] = s_hp330, 47 [HP_340] = s_hp340, 48 [HP_345] = s_hp345, 49 [HP_350] = NULL, 50 [HP_360] = s_hp360, 51 [HP_370] = s_hp370, 52 [HP_375] = s_hp375, 53 [HP_380] = s_hp380, 54 [HP_385] = s_hp385, 55 [HP_400] = s_hp400, 56 [HP_425T] = s_hp425t, 57 [HP_425S] = s_hp425s, 58 [HP_425E] = s_hp425e, 59 [HP_433T] = s_hp433t, 60 [HP_433S] = s_hp433s, 61 }; 62 63 static char hp300_model_name[13] = "HP9000/"; 64 65 extern void hp300_reset(void); 66 #ifdef CONFIG_SERIAL_8250_CONSOLE 67 extern int hp300_setup_serial_console(void) __init; 68 #endif 69 70 int __init hp300_parse_bootinfo(const struct bi_record *record) 71 { 72 int unknown = 0; 73 const unsigned long *data = record->data; 74 75 switch (record->tag) { 76 case BI_HP300_MODEL: 77 hp300_model = *data; 78 break; 79 80 case BI_HP300_UART_SCODE: 81 hp300_uart_scode = *data; 82 break; 83 84 case BI_HP300_UART_ADDR: 85 /* serial port address: ignored here */ 86 break; 87 88 default: 89 unknown = 1; 90 } 91 92 return unknown; 93 } 94 95 #ifdef CONFIG_HEARTBEAT 96 static void hp300_pulse(int x) 97 { 98 if (x) 99 blinken_leds(0x10, 0); 100 else 101 blinken_leds(0, 0x10); 102 } 103 #endif 104 105 static void hp300_get_model(char *model) 106 { 107 strcpy(model, hp300_model_name); 108 } 109 110 #define RTCBASE 0xf0420000 111 #define RTC_DATA 0x1 112 #define RTC_CMD 0x3 113 114 #define RTC_BUSY 0x02 115 #define RTC_DATA_RDY 0x01 116 117 #define rtc_busy() (in_8(RTCBASE + RTC_CMD) & RTC_BUSY) 118 #define rtc_data_available() (in_8(RTCBASE + RTC_CMD) & RTC_DATA_RDY) 119 #define rtc_status() (in_8(RTCBASE + RTC_CMD)) 120 #define rtc_command(x) out_8(RTCBASE + RTC_CMD, (x)) 121 #define rtc_read_data() (in_8(RTCBASE + RTC_DATA)) 122 #define rtc_write_data(x) out_8(RTCBASE + RTC_DATA, (x)) 123 124 #define RTC_SETREG 0xe0 125 #define RTC_WRITEREG 0xc2 126 #define RTC_READREG 0xc3 127 128 #define RTC_REG_SEC2 0 129 #define RTC_REG_SEC1 1 130 #define RTC_REG_MIN2 2 131 #define RTC_REG_MIN1 3 132 #define RTC_REG_HOUR2 4 133 #define RTC_REG_HOUR1 5 134 #define RTC_REG_WDAY 6 135 #define RTC_REG_DAY2 7 136 #define RTC_REG_DAY1 8 137 #define RTC_REG_MON2 9 138 #define RTC_REG_MON1 10 139 #define RTC_REG_YEAR2 11 140 #define RTC_REG_YEAR1 12 141 142 #define RTC_HOUR1_24HMODE 0x8 143 144 #define RTC_STAT_MASK 0xf0 145 #define RTC_STAT_RDY 0x40 146 147 static inline unsigned char hp300_rtc_read(unsigned char reg) 148 { 149 unsigned char s, ret; 150 unsigned long flags; 151 152 local_irq_save(flags); 153 154 while (rtc_busy()); 155 rtc_command(RTC_SETREG); 156 while (rtc_busy()); 157 rtc_write_data(reg); 158 while (rtc_busy()); 159 rtc_command(RTC_READREG); 160 161 do { 162 while (!rtc_data_available()); 163 s = rtc_status(); 164 ret = rtc_read_data(); 165 } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY); 166 167 local_irq_restore(flags); 168 169 return ret; 170 } 171 172 static inline unsigned char hp300_rtc_write(unsigned char reg, 173 unsigned char val) 174 { 175 unsigned char s, ret; 176 unsigned long flags; 177 178 local_irq_save(flags); 179 180 while (rtc_busy()); 181 rtc_command(RTC_SETREG); 182 while (rtc_busy()); 183 rtc_write_data((val << 4) | reg); 184 while (rtc_busy()); 185 rtc_command(RTC_WRITEREG); 186 while (rtc_busy()); 187 rtc_command(RTC_READREG); 188 189 do { 190 while (!rtc_data_available()); 191 s = rtc_status(); 192 ret = rtc_read_data(); 193 } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY); 194 195 local_irq_restore(flags); 196 197 return ret; 198 } 199 200 static int hp300_hwclk(int op, struct rtc_time *t) 201 { 202 if (!op) { /* read */ 203 t->tm_sec = hp300_rtc_read(RTC_REG_SEC1) * 10 + 204 hp300_rtc_read(RTC_REG_SEC2); 205 t->tm_min = hp300_rtc_read(RTC_REG_MIN1) * 10 + 206 hp300_rtc_read(RTC_REG_MIN2); 207 t->tm_hour = (hp300_rtc_read(RTC_REG_HOUR1) & 3) * 10 + 208 hp300_rtc_read(RTC_REG_HOUR2); 209 t->tm_wday = -1; 210 t->tm_mday = hp300_rtc_read(RTC_REG_DAY1) * 10 + 211 hp300_rtc_read(RTC_REG_DAY2); 212 t->tm_mon = hp300_rtc_read(RTC_REG_MON1) * 10 + 213 hp300_rtc_read(RTC_REG_MON2) - 1; 214 t->tm_year = hp300_rtc_read(RTC_REG_YEAR1) * 10 + 215 hp300_rtc_read(RTC_REG_YEAR2); 216 if (t->tm_year <= 69) 217 t->tm_year += 100; 218 } else { 219 hp300_rtc_write(RTC_REG_SEC1, t->tm_sec / 10); 220 hp300_rtc_write(RTC_REG_SEC2, t->tm_sec % 10); 221 hp300_rtc_write(RTC_REG_MIN1, t->tm_min / 10); 222 hp300_rtc_write(RTC_REG_MIN2, t->tm_min % 10); 223 hp300_rtc_write(RTC_REG_HOUR1, 224 ((t->tm_hour / 10) & 3) | RTC_HOUR1_24HMODE); 225 hp300_rtc_write(RTC_REG_HOUR2, t->tm_hour % 10); 226 hp300_rtc_write(RTC_REG_DAY1, t->tm_mday / 10); 227 hp300_rtc_write(RTC_REG_DAY2, t->tm_mday % 10); 228 hp300_rtc_write(RTC_REG_MON1, (t->tm_mon + 1) / 10); 229 hp300_rtc_write(RTC_REG_MON2, (t->tm_mon + 1) % 10); 230 if (t->tm_year >= 100) 231 t->tm_year -= 100; 232 hp300_rtc_write(RTC_REG_YEAR1, t->tm_year / 10); 233 hp300_rtc_write(RTC_REG_YEAR2, t->tm_year % 10); 234 } 235 236 return 0; 237 } 238 239 static unsigned int hp300_get_ss(void) 240 { 241 return hp300_rtc_read(RTC_REG_SEC1) * 10 + 242 hp300_rtc_read(RTC_REG_SEC2); 243 } 244 245 static void __init hp300_init_IRQ(void) 246 { 247 } 248 249 void __init config_hp300(void) 250 { 251 mach_sched_init = hp300_sched_init; 252 mach_init_IRQ = hp300_init_IRQ; 253 mach_get_model = hp300_get_model; 254 arch_gettimeoffset = hp300_gettimeoffset; 255 mach_hwclk = hp300_hwclk; 256 mach_get_ss = hp300_get_ss; 257 mach_reset = hp300_reset; 258 #ifdef CONFIG_HEARTBEAT 259 mach_heartbeat = hp300_pulse; 260 #endif 261 mach_max_dma_address = 0xffffffff; 262 263 if (hp300_model >= HP_330 && hp300_model <= HP_433S && hp300_model != HP_350) { 264 printk(KERN_INFO "Detected HP9000 model %s\n", hp300_models[hp300_model-HP_320]); 265 strcat(hp300_model_name, hp300_models[hp300_model-HP_320]); 266 } 267 else { 268 panic("Unknown HP9000 Model"); 269 } 270 #ifdef CONFIG_SERIAL_8250_CONSOLE 271 hp300_setup_serial_console(); 272 #endif 273 } 274