2 * arch/m68k/mvme16x/config.c
4 * Copyright (C) 1995 Richard Hirst [richard@sleepie.demon.co.uk]
10 * Copyright (C) 1993 Hamish Macdonald
12 * This file is subject to the terms and conditions of the GNU General Public
13 * License. See the file README.legal in the main directory of this archive
17 #include <linux/types.h>
18 #include <linux/kernel.h>
20 #include <linux/tty.h>
21 #include <linux/console.h>
22 #include <linux/linkage.h>
23 #include <linux/init.h>
24 #include <linux/major.h>
25 #include <linux/genhd.h>
26 #include <linux/rtc.h>
27 #include <linux/interrupt.h>
29 #include <asm/bootinfo.h>
30 #include <asm/system.h>
31 #include <asm/pgtable.h>
32 #include <asm/setup.h>
34 #include <asm/traps.h>
36 #include <asm/machdep.h>
37 #include <asm/mvme16xhw.h>
39 extern t_bdid mvme_bdid;
41 static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE;
43 static void mvme16x_get_model(char *model);
44 static int mvme16x_get_hardware_list(char *buffer);
45 extern void mvme16x_sched_init(irq_handler_t handler);
46 extern unsigned long mvme16x_gettimeoffset (void);
47 extern int mvme16x_hwclk (int, struct rtc_time *);
48 extern int mvme16x_set_clock_mmss (unsigned long);
49 extern void mvme16x_reset (void);
50 extern void mvme16x_waitbut(void);
52 int bcd2int (unsigned char b);
54 /* Save tick handler routine pointer, will point to do_timer() in
55 * kernel/sched.c, called via mvme16x_process_int() */
57 static irq_handler_t tick_handler;
60 unsigned short mvme16x_config;
63 int mvme16x_parse_bootinfo(const struct bi_record *bi)
65 if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO)
71 void mvme16x_reset(void)
73 printk ("\r\n\nCalled mvme16x_reset\r\n"
74 "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
75 /* The string of returns is to delay the reset until the whole
76 * message is output. Assert reset bit in GCSR */
77 *(volatile char *)0xfff40107 = 0x80;
80 static void mvme16x_get_model(char *model)
82 p_bdid p = &mvme_bdid;
85 suf[1] = p->brdsuffix[0];
86 suf[2] = p->brdsuffix[1];
88 suf[0] = suf[1] ? '-' : '\0';
90 sprintf(model, "Motorola MVME%x%s", p->brdno, suf);
94 static int mvme16x_get_hardware_list(char *buffer)
96 p_bdid p = &mvme_bdid;
99 if (p->brdno == 0x0162 || p->brdno == 0x0172)
101 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
103 len += sprintf (buffer+len, "VMEchip2 %spresent\n",
104 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
105 len += sprintf (buffer+len, "SCSI interface %spresent\n",
106 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
107 len += sprintf (buffer+len, "Ethernet i/f %spresent\n",
108 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
117 * This function is called during kernel startup to initialize
118 * the mvme16x IRQ handling routines. Should probably ensure
119 * that the base vectors for the VMEChip2 and PCCChip2 are valid.
122 static void __init mvme16x_init_IRQ (void)
124 m68k_setup_user_interrupt(VEC_USER, 192, NULL);
127 #define pcc2chip ((volatile u_char *)0xfff42000)
128 #define PccSCCMICR 0x1d
129 #define PccSCCTICR 0x1e
130 #define PccSCCRICR 0x1f
132 void __init config_mvme16x(void)
134 p_bdid p = &mvme_bdid;
137 mach_max_dma_address = 0xffffffff;
138 mach_sched_init = mvme16x_sched_init;
139 mach_init_IRQ = mvme16x_init_IRQ;
140 mach_gettimeoffset = mvme16x_gettimeoffset;
141 mach_hwclk = mvme16x_hwclk;
142 mach_set_clock_mmss = mvme16x_set_clock_mmss;
143 mach_reset = mvme16x_reset;
144 mach_get_model = mvme16x_get_model;
145 mach_get_hardware_list = mvme16x_get_hardware_list;
147 /* Report board revision */
149 if (strncmp("BDID", p->bdid, 4))
151 printk ("\n\nBug call .BRD_ID returned garbage - giving up\n\n");
155 /* Board type is only set by newer versions of vmelilo/tftplilo */
156 if (vme_brdtype == 0)
157 vme_brdtype = p->brdno;
159 mvme16x_get_model(id);
160 printk ("\nBRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev>>4,
161 p->rev&0xf, p->yr, p->mth, p->day);
162 if (p->brdno == 0x0162 || p->brdno == 0x172)
164 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
166 mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
168 printk ("MVME%x Hardware status:\n", p->brdno);
169 printk (" CPU Type 68%s040\n",
170 rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
171 printk (" CPU clock %dMHz\n",
172 rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
173 printk (" VMEchip2 %spresent\n",
174 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
175 printk (" SCSI interface %spresent\n",
176 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
177 printk (" Ethernet interface %spresent\n",
178 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
182 mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401;
184 /* Dont allow any interrupts from the CD2401 until the interrupt */
185 /* handlers are installed */
187 pcc2chip[PccSCCMICR] = 0x10;
188 pcc2chip[PccSCCTICR] = 0x10;
189 pcc2chip[PccSCCRICR] = 0x10;
193 static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
195 p_bdid p = &mvme_bdid;
196 unsigned long *new = (unsigned long *)vectors;
197 unsigned long *old = (unsigned long *)0xffe00000;
198 volatile unsigned char uc, *ucp;
200 if (p->brdno == 0x0162 || p->brdno == 0x172)
202 ucp = (volatile unsigned char *)0xfff42043;
208 *(volatile unsigned long *)0xfff40074 = 0x40000000;
210 *(new+4) = *(old+4); /* Illegal instruction */
211 *(new+9) = *(old+9); /* Trace */
212 *(new+47) = *(old+47); /* Trap #15 */
214 if (p->brdno == 0x0162 || p->brdno == 0x172)
215 *(new+0x5e) = *(old+0x5e); /* ABORT switch */
217 *(new+0x6e) = *(old+0x6e); /* ABORT switch */
221 static irqreturn_t mvme16x_timer_int (int irq, void *dev_id)
223 *(volatile unsigned char *)0xfff4201b |= 8;
224 return tick_handler(irq, dev_id);
227 void mvme16x_sched_init (irq_handler_t timer_routine)
229 p_bdid p = &mvme_bdid;
232 tick_handler = timer_routine;
233 /* Using PCCchip2 or MC2 chip tick timer 1 */
234 *(volatile unsigned long *)0xfff42008 = 0;
235 *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */
236 *(volatile unsigned char *)0xfff42017 |= 3;
237 *(volatile unsigned char *)0xfff4201b = 0x16;
238 if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0,
239 "timer", mvme16x_timer_int))
240 panic ("Couldn't register timer int");
242 if (p->brdno == 0x0162 || p->brdno == 0x172)
243 irq = MVME162_IRQ_ABORT;
245 irq = MVME167_IRQ_ABORT;
246 if (request_irq(irq, mvme16x_abort_int, 0,
247 "abort", mvme16x_abort_int))
248 panic ("Couldn't register abort int");
252 /* This is always executed with interrupts disabled. */
253 unsigned long mvme16x_gettimeoffset (void)
255 return (*(volatile unsigned long *)0xfff42008);
258 int bcd2int (unsigned char b)
260 return ((b>>4)*10 + (b&15));
263 int mvme16x_hwclk(int op, struct rtc_time *t)
267 rtc->ctrl = RTC_READ;
268 t->tm_year = bcd2int (rtc->bcd_year);
269 t->tm_mon = bcd2int (rtc->bcd_mth);
270 t->tm_mday = bcd2int (rtc->bcd_dom);
271 t->tm_hour = bcd2int (rtc->bcd_hr);
272 t->tm_min = bcd2int (rtc->bcd_min);
273 t->tm_sec = bcd2int (rtc->bcd_sec);
279 int mvme16x_set_clock_mmss (unsigned long nowtime)