machdep.c revision 1.14 
1/*	$NetBSD: machdep.c,v 1.14 2018/07/15 05:16:42 maxv Exp $	*/
2
3/*
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
34 * Copyright (C) 1995, 1996 TooLs GmbH.
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 *    notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 *    notice, this list of conditions and the following disclaimer in the
44 *    documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 *    must display the following acknowledgement:
47 *	This product includes software developed by TooLs GmbH.
48 * 4. The name of TooLs GmbH may not be used to endorse or promote products
49 *    derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
57 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
58 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
59 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
60 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62
63#include <sys/cdefs.h>
64__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.14 2018/07/15 05:16:42 maxv Exp $");
65
66#include "opt_compat_netbsd.h"
67#include "opt_ddb.h"
68#include "opt_ddbparam.h"
69#include "opt_inet.h"
70#include "opt_ccitt.h"
71#include "opt_ns.h"
72
73#include <sys/param.h>
74#include <sys/buf.h>
75#include <sys/bus.h>
76#include <sys/conf.h>
77#include <sys/device.h>
78#include <sys/exec.h>
79#include <sys/extent.h>
80#include <sys/intr.h>
81#include <sys/kernel.h>
82#include <sys/kgdb.h>
83#include <sys/ksyms.h>
84#include <sys/malloc.h>
85#include <sys/mbuf.h>
86#include <sys/mount.h>
87#include <sys/msgbuf.h>
88#include <sys/proc.h>
89#include <sys/reboot.h>
90#include <sys/syscallargs.h>
91#include <sys/sysctl.h>
92#include <sys/syslog.h>
93#include <sys/systm.h>
94
95#include <uvm/uvm_extern.h>
96
97#include <machine/powerpc.h>
98#include <machine/pmppc.h>
99
100#include <powerpc/db_machdep.h>
101#include <powerpc/pio.h>
102#include <powerpc/pmap.h>
103#include <powerpc/trap.h>
104
105#include <powerpc/oea/bat.h>
106#include <powerpc/pic/picvar.h>
107
108#include <ddb/db_extern.h>
109
110#include <dev/cons.h>
111
112#include <dev/ic/cpc700reg.h>
113#include <dev/ic/cpc700uic.h>
114
115#include "com.h"
116#if (NCOM > 0)
117#include <sys/termios.h>
118#include <dev/ic/comreg.h>
119#include <dev/ic/comvar.h>
120#endif
121
122#include "ksyms.h"
123
124struct powerpc_bus_space pmppc_mem_tag = {
125	_BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
126	0, 0, 0xffffffff,
127	NULL,
128};
129struct powerpc_bus_space pmppc_pci_io_tag = {
130	_BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
131	0, CPC_PCI_IO_BASE, 0xffffffff,
132	NULL,
133};
134
135static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)]
136    __attribute__((aligned(8)));
137
138
139#ifdef KGDB
140char kgdb_devname[] = KGDB_DEVNAME;
141int comkgdbaddr = KGDB_DEVADDR;
142int comkgdbrate = KGDB_DEVRATE;
143
144#ifndef KGDB_DEVMODE
145#define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
146#endif
147int comkgdbmode = KGDB_DEVMODE;
148
149void kgdb_port_init(void);
150#endif /* KGDB */
151
152/*
153 * Global variables used here and there
154 */
155struct mem_region physmemr[2], availmemr[2];
156
157struct a_config a_config;
158
159void initppc(u_int, u_int, u_int, void *); /* Called from locore */
160void pmppc_setup(void);
161void setleds(int leds);
162
163void
164initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo)
165{
166	extern void consinit(void);
167	extern u_long ticks_per_sec;
168	extern unsigned char edata[], end[];
169
170	memset(&edata, 0, end - edata); /* clear BSS */
171
172	pmppc_setup();
173
174	physmemr[0].start = 0;
175	physmemr[0].size = a_config.a_mem_size;
176	physmemr[1].size = 0;
177	availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
178	availmemr[0].size = a_config.a_mem_size - availmemr[0].start;
179	availmemr[1].size = 0;
180
181#ifdef BOOTHOWTO
182	/*
183	 * boothowto
184	 */
185	boothowto = BOOTHOWTO;
186#endif
187
188	if (bus_space_init(&pmppc_mem_tag, "iomem",
189			   ex_storage[0], sizeof(ex_storage[0])))
190		panic("bus_space_init failed");
191
192	/*
193	 * Initialize the BAT registers
194	 */
195	oea_batinit(
196	    PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */
197	    CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */
198	    CPC_PCI_IO_BASE,  BAT_BL_128M, /* PCI I/O 128M area */
199	    0);
200
201	/*
202	 * Set up trap vectors
203	 */
204	oea_init(NULL);
205
206	/*
207	 * Get CPU clock
208	 */
209	ticks_per_sec = a_config.a_bus_freq;
210	ticks_per_sec /= 4;	/* 4 cycles per DEC tick */
211	cpu_timebase = ticks_per_sec;
212
213	/*
214	 * Set up console.
215	 */
216	consinit();		/* XXX should not be here */
217
218	printf("console set up\n");
219
220	uvm_md_init();
221
222	/*
223	 * Initialize pmap module.
224	 */
225	pmap_bootstrap(startkernel, endkernel);
226
227#ifdef KGDB
228	kgdb_port_init();
229	if (boothowto & RB_KDB) {
230		kgdb_debug_init = 1;
231		kgdb_connect(1);
232	}
233#endif
234}
235
236void
237mem_regions(struct mem_region **mem, struct mem_region **avail)
238{
239	*mem = physmemr;
240	*avail = availmemr;
241}
242
243/*
244 * Machine dependent startup code.
245 */
246void
247cpu_startup(void)
248{
249
250	oea_startup(NULL);
251
252	/*
253	 * Now that we have VM, malloc()s are OK in bus_space.
254	 */
255	bus_space_mallocok();
256
257	/* Set up the PCI bus tag. */
258	if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0))
259		panic("bus_space_init pci failed");
260
261	/* Set up interrupt controller */
262	cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE,
263	    CPC_INTR_MASK(PMPPC_I_ETH_INT), 0);
264
265	pic_init();
266	(void)setup_cpc700();
267	oea_install_extint(pic_ext_intr);
268
269#if 0
270/* XXX doesn't seem to be needed anymore */
271	/*
272	 * Now allow hardware interrupts.
273	 */
274	__asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
275	    : "=r"(msr) : "K"(PSL_EE));
276#endif
277}
278
279/*
280 * consinit
281 * Initialize system console.
282 */
283void
284consinit(void)
285{
286	static int initted;
287#if (NCOM > 0)
288	bus_space_tag_t tag;
289#endif
290
291	if (initted)
292		return;
293	initted = 1;
294
295#if (NCOM > 0)
296	tag = &pmppc_mem_tag;
297
298	if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq),
299	    COM_TYPE_NORMAL,
300            ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)))
301		panic("can't init serial console");
302	else
303		return;
304#endif
305
306	panic("console device missing -- serial console not in kernel");
307	/* Of course, this is moot if there is no console... */
308}
309
310#ifdef KGDB
311void
312kgdb_port_init(void)
313{
314#if (NCOM > 0)
315	if(!strcmp(kgdb_devname, "com")) {
316		bus_space_tag_t tag = &pmppc_mem_tag;
317		com_kgdb_attach(tag, comkgdbaddr, comkgdbrate,
318				CPC_COM_SPEED(a_config.a_bus_freq),
319				COM_TYPE_NORMAL, comkgdbmode);
320	}
321#endif
322}
323#endif
324
325/*
326 * Halt or reboot the machine after syncing/dumping according to howto.
327 */
328void
329cpu_reboot(int howto, char *what)
330{
331	static int syncing;
332	static char str[256];
333	char *ap = str, *ap1 = ap;
334	extern void disable_intr(void);
335
336	boothowto = howto;
337	if (!cold && !(howto & RB_NOSYNC) && !syncing) {
338		syncing = 1;
339		vfs_shutdown();		/* sync */
340		resettodr();		/* set wall clock */
341	}
342	splhigh();
343	if (howto & RB_HALT) {
344		doshutdownhooks();
345		pmf_system_shutdown(boothowto);
346		printf("halted\n\n");
347		while(1);
348	}
349	if (!cold && (howto & RB_DUMP))
350		oea_dumpsys();
351	doshutdownhooks();
352
353	pmf_system_shutdown(boothowto);
354	printf("rebooting\n\n");
355	if (what && *what) {
356		if (strlen(what) > sizeof str - 5)
357			printf("boot string too large, ignored\n");
358		else {
359			strcpy(str, what);
360			ap1 = ap = str + strlen(str);
361			*ap++ = ' ';
362		}
363	}
364	*ap++ = '-';
365	if (howto & RB_SINGLE)
366		*ap++ = 's';
367	if (howto & RB_KDB)
368		*ap++ = 'd';
369	*ap++ = 0;
370	if (ap[-2] == '-')
371		*ap1 = 0;
372
373	disable_intr();
374
375        /* Write the two byte reset sequence to the reset register. */
376	out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1);
377	out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2);
378
379	while (1);
380}
381
382void
383setleds(int leds)
384{
385	out8(PMPPC_LEDS, leds);
386}
387
388void
389pmppc_setup(void)
390{
391	uint config0, config1;
392
393	config0 = in8(PMPPC_CONFIG0);
394	config1 = in8(PMPPC_CONFIG1);
395
396	/* from page 2-8 in the Artesyn User's manual */
397	a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM;
398	a_config.a_has_ecc = (config1 & 0x40) != 0;
399	switch (config1 & 0x30) {
400	case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break;
401	case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break;
402	case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break;
403	case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break;
404	}
405	a_config.a_l2_cache = (config1 >> 2) & 3;
406	switch (config1 & 0x03) {
407	case 0x00: a_config.a_bus_freq = 66666666; break;
408	case 0x01: a_config.a_bus_freq = 83333333; break;
409	case 0x02: a_config.a_bus_freq = 100000000; break;
410	case 0x03: a_config.a_bus_freq = 0; break; /* XXX */
411	}
412	a_config.a_is_monarch = (config0 & 0x80) == 0;
413	a_config.a_has_eth = (config0 & 0x20) != 0;
414	a_config.a_has_rtc = (config0 & 0x10) == 0;
415	switch (config0 & 0x0c) {
416	case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break;
417	case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break;
418	case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break;
419	case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break;
420	}
421	switch (config0 & 0x03) {
422	case 0x00: a_config.a_flash_width = 64; break;
423	case 0x01: a_config.a_flash_width = 32; break;
424	case 0x02: a_config.a_flash_width = 16; break;
425	case 0x03: a_config.a_flash_width = 0; break;
426	}
427}
428