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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
084b3600 | 15 | #include <linux/rtc.h> |
1da177e4 LT |
16 | |
17 | #include <asm/bootinfo.h> | |
4c3c522b | 18 | #include <asm/bootinfo-hp300.h> |
abe48101 | 19 | #include <asm/byteorder.h> |
1da177e4 LT |
20 | #include <asm/machdep.h> |
21 | #include <asm/blinken.h> | |
22 | #include <asm/io.h> /* readb() and writeb() */ | |
23 | #include <asm/hp300hw.h> | |
1da177e4 | 24 | |
1da177e4 LT |
25 | #include "time.h" |
26 | ||
27 | unsigned long hp300_model; | |
28 | unsigned long hp300_uart_scode = -1; | |
f808b865 GU |
29 | unsigned char hp300_ledstate; |
30 | EXPORT_SYMBOL(hp300_ledstate); | |
1da177e4 LT |
31 | |
32 | static char s_hp330[] __initdata = "330"; | |
33 | static char s_hp340[] __initdata = "340"; | |
34 | static char s_hp345[] __initdata = "345"; | |
35 | static char s_hp360[] __initdata = "360"; | |
36 | static char s_hp370[] __initdata = "370"; | |
37 | static char s_hp375[] __initdata = "375"; | |
38 | static char s_hp380[] __initdata = "380"; | |
39 | static char s_hp385[] __initdata = "385"; | |
40 | static char s_hp400[] __initdata = "400"; | |
41 | static char s_hp425t[] __initdata = "425t"; | |
42 | static char s_hp425s[] __initdata = "425s"; | |
43 | static char s_hp425e[] __initdata = "425e"; | |
44 | static char s_hp433t[] __initdata = "433t"; | |
45 | static char s_hp433s[] __initdata = "433s"; | |
46 | static char *hp300_models[] __initdata = { | |
47 | [HP_320] = NULL, | |
48 | [HP_330] = s_hp330, | |
49 | [HP_340] = s_hp340, | |
50 | [HP_345] = s_hp345, | |
51 | [HP_350] = NULL, | |
52 | [HP_360] = s_hp360, | |
53 | [HP_370] = s_hp370, | |
54 | [HP_375] = s_hp375, | |
55 | [HP_380] = s_hp380, | |
56 | [HP_385] = s_hp385, | |
57 | [HP_400] = s_hp400, | |
58 | [HP_425T] = s_hp425t, | |
59 | [HP_425S] = s_hp425s, | |
60 | [HP_425E] = s_hp425e, | |
61 | [HP_433T] = s_hp433t, | |
62 | [HP_433S] = s_hp433s, | |
63 | }; | |
64 | ||
65 | static char hp300_model_name[13] = "HP9000/"; | |
66 | ||
67 | extern void hp300_reset(void); | |
1da177e4 LT |
68 | #ifdef CONFIG_SERIAL_8250_CONSOLE |
69 | extern int hp300_setup_serial_console(void) __init; | |
70 | #endif | |
71 | ||
72 | int __init hp300_parse_bootinfo(const struct bi_record *record) | |
73 | { | |
74 | int unknown = 0; | |
abe48101 | 75 | const void *data = record->data; |
1da177e4 | 76 | |
abe48101 | 77 | switch (be16_to_cpu(record->tag)) { |
1da177e4 | 78 | case BI_HP300_MODEL: |
abe48101 | 79 | hp300_model = be32_to_cpup(data); |
1da177e4 LT |
80 | break; |
81 | ||
82 | case BI_HP300_UART_SCODE: | |
abe48101 | 83 | hp300_uart_scode = be32_to_cpup(data); |
1da177e4 LT |
84 | break; |
85 | ||
86 | case BI_HP300_UART_ADDR: | |
87 | /* serial port address: ignored here */ | |
88 | break; | |
89 | ||
e8d6dc5a | 90 | default: |
1da177e4 LT |
91 | unknown = 1; |
92 | } | |
93 | ||
94 | return unknown; | |
95 | } | |
96 | ||
97 | #ifdef CONFIG_HEARTBEAT | |
98 | static void hp300_pulse(int x) | |
99 | { | |
100 | if (x) | |
101 | blinken_leds(0x10, 0); | |
102 | else | |
103 | blinken_leds(0, 0x10); | |
104 | } | |
105 | #endif | |
106 | ||
107 | static void hp300_get_model(char *model) | |
108 | { | |
109 | strcpy(model, hp300_model_name); | |
110 | } | |
111 | ||
112 | #define RTCBASE 0xf0420000 | |
113 | #define RTC_DATA 0x1 | |
114 | #define RTC_CMD 0x3 | |
115 | ||
116 | #define RTC_BUSY 0x02 | |
117 | #define RTC_DATA_RDY 0x01 | |
118 | ||
119 | #define rtc_busy() (in_8(RTCBASE + RTC_CMD) & RTC_BUSY) | |
120 | #define rtc_data_available() (in_8(RTCBASE + RTC_CMD) & RTC_DATA_RDY) | |
121 | #define rtc_status() (in_8(RTCBASE + RTC_CMD)) | |
122 | #define rtc_command(x) out_8(RTCBASE + RTC_CMD, (x)) | |
123 | #define rtc_read_data() (in_8(RTCBASE + RTC_DATA)) | |
124 | #define rtc_write_data(x) out_8(RTCBASE + RTC_DATA, (x)) | |
125 | ||
126 | #define RTC_SETREG 0xe0 | |
127 | #define RTC_WRITEREG 0xc2 | |
128 | #define RTC_READREG 0xc3 | |
129 | ||
130 | #define RTC_REG_SEC2 0 | |
131 | #define RTC_REG_SEC1 1 | |
132 | #define RTC_REG_MIN2 2 | |
133 | #define RTC_REG_MIN1 3 | |
134 | #define RTC_REG_HOUR2 4 | |
135 | #define RTC_REG_HOUR1 5 | |
136 | #define RTC_REG_WDAY 6 | |
137 | #define RTC_REG_DAY2 7 | |
138 | #define RTC_REG_DAY1 8 | |
139 | #define RTC_REG_MON2 9 | |
140 | #define RTC_REG_MON1 10 | |
141 | #define RTC_REG_YEAR2 11 | |
142 | #define RTC_REG_YEAR1 12 | |
143 | ||
144 | #define RTC_HOUR1_24HMODE 0x8 | |
145 | ||
146 | #define RTC_STAT_MASK 0xf0 | |
147 | #define RTC_STAT_RDY 0x40 | |
148 | ||
149 | static inline unsigned char hp300_rtc_read(unsigned char reg) | |
150 | { | |
151 | unsigned char s, ret; | |
152 | unsigned long flags; | |
153 | ||
154 | local_irq_save(flags); | |
155 | ||
156 | while (rtc_busy()); | |
157 | rtc_command(RTC_SETREG); | |
158 | while (rtc_busy()); | |
159 | rtc_write_data(reg); | |
160 | while (rtc_busy()); | |
161 | rtc_command(RTC_READREG); | |
162 | ||
163 | do { | |
164 | while (!rtc_data_available()); | |
165 | s = rtc_status(); | |
166 | ret = rtc_read_data(); | |
167 | } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY); | |
168 | ||
169 | local_irq_restore(flags); | |
170 | ||
171 | return ret; | |
172 | } | |
173 | ||
174 | static inline unsigned char hp300_rtc_write(unsigned char reg, | |
175 | unsigned char val) | |
176 | { | |
177 | unsigned char s, ret; | |
178 | unsigned long flags; | |
179 | ||
180 | local_irq_save(flags); | |
181 | ||
182 | while (rtc_busy()); | |
183 | rtc_command(RTC_SETREG); | |
184 | while (rtc_busy()); | |
185 | rtc_write_data((val << 4) | reg); | |
186 | while (rtc_busy()); | |
187 | rtc_command(RTC_WRITEREG); | |
188 | while (rtc_busy()); | |
189 | rtc_command(RTC_READREG); | |
190 | ||
191 | do { | |
192 | while (!rtc_data_available()); | |
193 | s = rtc_status(); | |
194 | ret = rtc_read_data(); | |
195 | } while ((s & RTC_STAT_MASK) != RTC_STAT_RDY); | |
196 | ||
197 | local_irq_restore(flags); | |
198 | ||
199 | return ret; | |
200 | } | |
201 | ||
202 | static int hp300_hwclk(int op, struct rtc_time *t) | |
203 | { | |
204 | if (!op) { /* read */ | |
205 | t->tm_sec = hp300_rtc_read(RTC_REG_SEC1) * 10 + | |
206 | hp300_rtc_read(RTC_REG_SEC2); | |
207 | t->tm_min = hp300_rtc_read(RTC_REG_MIN1) * 10 + | |
208 | hp300_rtc_read(RTC_REG_MIN2); | |
209 | t->tm_hour = (hp300_rtc_read(RTC_REG_HOUR1) & 3) * 10 + | |
210 | hp300_rtc_read(RTC_REG_HOUR2); | |
211 | t->tm_wday = -1; | |
212 | t->tm_mday = hp300_rtc_read(RTC_REG_DAY1) * 10 + | |
213 | hp300_rtc_read(RTC_REG_DAY2); | |
214 | t->tm_mon = hp300_rtc_read(RTC_REG_MON1) * 10 + | |
215 | hp300_rtc_read(RTC_REG_MON2) - 1; | |
216 | t->tm_year = hp300_rtc_read(RTC_REG_YEAR1) * 10 + | |
217 | hp300_rtc_read(RTC_REG_YEAR2); | |
218 | if (t->tm_year <= 69) | |
219 | t->tm_year += 100; | |
220 | } else { | |
221 | hp300_rtc_write(RTC_REG_SEC1, t->tm_sec / 10); | |
222 | hp300_rtc_write(RTC_REG_SEC2, t->tm_sec % 10); | |
223 | hp300_rtc_write(RTC_REG_MIN1, t->tm_min / 10); | |
224 | hp300_rtc_write(RTC_REG_MIN2, t->tm_min % 10); | |
225 | hp300_rtc_write(RTC_REG_HOUR1, | |
226 | ((t->tm_hour / 10) & 3) | RTC_HOUR1_24HMODE); | |
227 | hp300_rtc_write(RTC_REG_HOUR2, t->tm_hour % 10); | |
228 | hp300_rtc_write(RTC_REG_DAY1, t->tm_mday / 10); | |
229 | hp300_rtc_write(RTC_REG_DAY2, t->tm_mday % 10); | |
230 | hp300_rtc_write(RTC_REG_MON1, (t->tm_mon + 1) / 10); | |
231 | hp300_rtc_write(RTC_REG_MON2, (t->tm_mon + 1) % 10); | |
232 | if (t->tm_year >= 100) | |
233 | t->tm_year -= 100; | |
234 | hp300_rtc_write(RTC_REG_YEAR1, t->tm_year / 10); | |
235 | hp300_rtc_write(RTC_REG_YEAR2, t->tm_year % 10); | |
236 | } | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static unsigned int hp300_get_ss(void) | |
242 | { | |
243 | return hp300_rtc_read(RTC_REG_SEC1) * 10 + | |
244 | hp300_rtc_read(RTC_REG_SEC2); | |
245 | } | |
246 | ||
35353bb8 RZ |
247 | static void __init hp300_init_IRQ(void) |
248 | { | |
249 | } | |
250 | ||
1da177e4 LT |
251 | void __init config_hp300(void) |
252 | { | |
253 | mach_sched_init = hp300_sched_init; | |
254 | mach_init_IRQ = hp300_init_IRQ; | |
1da177e4 | 255 | mach_get_model = hp300_get_model; |
c8d5ba18 | 256 | arch_gettimeoffset = hp300_gettimeoffset; |
1da177e4 LT |
257 | mach_hwclk = hp300_hwclk; |
258 | mach_get_ss = hp300_get_ss; | |
259 | mach_reset = hp300_reset; | |
260 | #ifdef CONFIG_HEARTBEAT | |
261 | mach_heartbeat = hp300_pulse; | |
1da177e4 LT |
262 | #endif |
263 | mach_max_dma_address = 0xffffffff; | |
264 | ||
e8d6dc5a FF |
265 | if (hp300_model >= HP_330 && hp300_model <= HP_433S && |
266 | hp300_model != HP_350) { | |
267 | pr_info("Detected HP9000 model %s\n", | |
268 | hp300_models[hp300_model-HP_320]); | |
1da177e4 | 269 | strcat(hp300_model_name, hp300_models[hp300_model-HP_320]); |
e8d6dc5a | 270 | } else { |
1da177e4 LT |
271 | panic("Unknown HP9000 Model"); |
272 | } | |
273 | #ifdef CONFIG_SERIAL_8250_CONSOLE | |
274 | hp300_setup_serial_console(); | |
275 | #endif | |
276 | } |