1 /* $Id: mmnet_machdep.c,v 1.6 2020/04/18 11:00:40 skrll Exp $ */
2 /* $NetBSD: mmnet_machdep.c,v 1.6 2020/04/18 11:00:40 skrll Exp $ */
3
4 /*
5 * Copyright (c) 2007 Embedtronics Oy
6 * Based on tsarm_machdep.c
7 *
8 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
9 * All rights reserved.
10 *
11 * Based on code written by Jason R. Thorpe and Steve C. Woodford for
12 * Wasabi Systems, Inc.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 * must display the following acknowledgement:
24 * This product includes software developed for the NetBSD Project by
25 * Wasabi Systems, Inc.
26 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
27 * or promote products derived from this software without specific prior
28 * written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
33 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40 * POSSIBILITY OF SUCH DAMAGE.
41 */
42
43 /*
44 * Copyright (c) 1997,1998 Mark Brinicombe.
45 * Copyright (c) 1997,1998 Causality Limited.
46 * All rights reserved.
47 *
48 * Redistribution and use in source and binary forms, with or without
49 * modification, are permitted provided that the following conditions
50 * are met:
51 * 1. Redistributions of source code must retain the above copyright
52 * notice, this list of conditions and the following disclaimer.
53 * 2. Redistributions in binary form must reproduce the above copyright
54 * notice, this list of conditions and the following disclaimer in the
55 * documentation and/or other materials provided with the distribution.
56 * 3. All advertising materials mentioning features or use of this software
57 * must display the following acknowledgement:
58 * This product includes software developed by Mark Brinicombe
59 * for the NetBSD Project.
60 * 4. The name of the company nor the name of the author may be used to
61 * endorse or promote products derived from this software without specific
62 * prior written permission.
63 *
64 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
65 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
66 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
67 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
68 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
69 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
70 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
74 * SUCH DAMAGE.
75 *
76 * Machine dependant functions for kernel setup for Iyonix.
77 */
78 /* Adaptation for Propox MMnet by Aymeric Vincent is in the public domain */
79
80 #include <sys/cdefs.h>
81 __KERNEL_RCSID(0, "$NetBSD: mmnet_machdep.c,v 1.6 2020/04/18 11:00:40 skrll Exp $");
82
83 #include "opt_ddb.h"
84 #include "opt_kgdb.h"
85
86 #include <sys/param.h>
87 #include <sys/bus.h>
88 #include <sys/device.h>
89 #include <sys/systm.h>
90 #include <sys/kernel.h>
91 #include <sys/exec.h>
92 #include <sys/proc.h>
93 #include <sys/msgbuf.h>
94 #include <sys/reboot.h>
95 #include <sys/termios.h>
96 #include <sys/ksyms.h>
97
98 #include <uvm/uvm_extern.h>
99
100 #include <dev/cons.h>
101
102 #include <machine/db_machdep.h>
103 #include <ddb/db_sym.h>
104 #include <ddb/db_extern.h>
105
106 #define DRAM_BLOCKS 1
107 #include <machine/bootconfig.h>
108 #include <machine/cpu.h>
109 #include <machine/frame.h>
110 #include <arm/undefined.h>
111
112 #include <arm/arm32/machdep.h>
113
114 #include <arm/at91/at91reg.h>
115 #include <arm/at91/at91var.h>
116
117 #include <dev/ic/comreg.h>
118 #include <dev/ic/comvar.h>
119
120 #include <machine/autoconf.h>
121
122 #include "isa.h"
123
124 #include <arm/at91/at91sam9260reg.h>
125 #include <arm/at91/at91sam9260busvar.h>
126
127 #include "ksyms.h"
128
129 #include <arm/at91/at91busvar.h>
130 #include <arm/at91/at91pdcreg.h>
131 #include <arm/at91/at91dbgureg.h>
132 #include <arm/at91/at91reg.h>
133 #include <arm/at91/at91streg.h>
134
135 /* boot configuration: */
136 BootConfig bootconfig; /* Boot config storage */
137 char *boot_args = NULL;
138 char *boot_file = NULL;
139
140 /* hmmm */
141 static struct arm32_dma_range mmnet_dma_ranges[4];
142 static struct at91bus_machdep mmnetbus;
143 static at91bus_tag_t old_at91bus_tag;
144
145 /* Prototypes */
146 static void mmnet_device_register(device_t dev, void *aux);
147 static void mmnetbus_init(struct at91bus_clocks *);
148 static void mmnetbus_peripheral_clock(int pid, int enable);
149 static uint32_t mmnetbus_gpio_mask(int pid);
150
151
152 /*
153 * void cpu_reboot(int howto, char *bootstr)
154 *
155 * Reboots the system
156 *
157 * Deal with any syncing, unmounting, dumping and shutdown hooks,
158 * then reset the CPU.
159 */
160 void
cpu_reboot(int howto,char * bootstr)161 cpu_reboot(int howto, char *bootstr)
162 {
163
164 /*
165 * If we are still cold then hit the air brakes
166 * and crash to earth fast
167 */
168 if (cold) {
169 doshutdownhooks();
170 pmf_system_shutdown(boothowto);
171 printf("\r\n");
172 printf("The operating system has halted.\r\n");
173 printf("Please press any key to reboot.\r\n");
174 cngetc();
175 printf("\r\nrebooting...\r\n");
176 goto reset;
177 }
178
179 /* Disable console buffering */
180
181 /*
182 * If RB_NOSYNC was not specified sync the discs.
183 * Note: Unless cold is set to 1 here, syslogd will die during the
184 * unmount. It looks like syslogd is getting woken up only to find
185 * that it cannot page part of the binary in as the filesystem has
186 * been unmounted.
187 */
188 if (!(howto & RB_NOSYNC))
189 bootsync();
190
191 /* Say NO to interrupts */
192 splhigh();
193
194 /* Do a dump if requested. */
195 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
196 dumpsys();
197
198 /* Run any shutdown hooks */
199 doshutdownhooks();
200
201 pmf_system_shutdown(boothowto);
202
203 /* Make sure IRQ's are disabled */
204 IRQdisable;
205
206 if (howto & RB_HALT) {
207 printf("\r\n");
208 printf("The operating system has halted.\r\n");
209 printf("Please press any key to reboot.\r\n");
210 cngetc();
211 }
212
213 printf("\r\nrebooting...\r\n");
214 reset:
215 /*
216 * Make really really sure that all interrupts are disabled,
217 * and poke the Internal Bus and Peripheral Bus reset lines.
218 */
219 (void) disable_interrupts(I32_bit|F32_bit);
220 STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1;
221 STREG(ST_CR) = ST_CR_WDRST;
222 for (;;);
223 }
224
225 /*
226 * vaddr_t initarm(...)
227 *
228 * Initial entry point on startup. This gets called before main() is
229 * entered.
230 * It should be responsible for setting up everything that must be
231 * in place when main is called.
232 * This includes
233 * Taking a copy of the boot configuration structure.
234 * Initialising the physical console so characters can be printed.
235 * Setting up page tables for the kernel
236 * Initialising interrupt controllers to a sane default state
237 */
238 vaddr_t
initarm(void * arg)239 initarm(void *arg)
240 {
241 vaddr_t sp;
242 /*
243 * basic AT91 initialization:
244 */
245 if (at91bus_init())
246 panic("%s: at91bus_init() failed", __FUNCTION__);
247
248 if (AT91_CHIP_ID() == AT91SAM9260_CHIP_ID) {
249 memcpy(&mmnetbus, at91bus_tag, sizeof(mmnetbus));
250 mmnetbus.init = mmnetbus_init;
251 mmnetbus.peripheral_clock = mmnetbus_peripheral_clock;
252 mmnetbus.gpio_mask = mmnetbus_gpio_mask;
253 old_at91bus_tag = at91bus_tag;
254 at91bus_tag = &mmnetbus;
255 }
256
257 /* Fake bootconfig structure for the benefit of pmap.c */
258 /* XXX must make the memory description h/w independent */
259 bootconfig.dramblocks = 1;
260 bootconfig.dram[0].address = 0x20000000UL;
261 bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE;
262 sp = at91bus_setup(&bootconfig);
263
264 if (AT91_CHIP_ID() != AT91SAM9260_CHIP_ID)
265 panic("%s: processor is not AT91SAM9260", __FUNCTION__);
266
267 /* we've a specific device_register routine */
268 evbarm_device_register = mmnet_device_register;
269
270 /* We return the new stack pointer address */
271 return sp;
272 }
273
274
275 bus_dma_tag_t
at91_bus_dma_init(struct arm32_bus_dma_tag * dma_tag_template)276 at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template)
277 {
278 int i;
279 struct arm32_bus_dma_tag *dmat;
280
281 for (i = 0; i < bootconfig.dramblocks; i++) {
282 mmnet_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address;
283 mmnet_dma_ranges[i].dr_busbase = bootconfig.dram[i].address;
284 mmnet_dma_ranges[i].dr_len = bootconfig.dram[i].pages *
285 PAGE_SIZE;
286 }
287
288 dmat = dma_tag_template;
289
290 dmat->_ranges = mmnet_dma_ranges;
291 dmat->_nranges = bootconfig.dramblocks;
292
293 return dmat;
294 }
295
mmnetbus_init(struct at91bus_clocks * clocks)296 void mmnetbus_init(struct at91bus_clocks *clocks)
297 {
298 (*old_at91bus_tag->init)(clocks);
299 }
300
mmnetbus_gpio_mask(int pid)301 uint32_t mmnetbus_gpio_mask(int pid)
302 {
303 switch (pid) {
304 case PID_PIOA: return ~0x00000300U;
305 case PID_PIOB: return ~0x0000783FU;
306 case PID_PIOC: return ~0x00000000U;
307 default: return ~0x00000000U;
308 }
309 }
310
mmnetbus_peripheral_clock(int pid,int enable)311 void mmnetbus_peripheral_clock(int pid, int enable)
312 {
313 switch (pid) {
314 case PID_TWI:
315 if (enable) {
316 PIOA_WRITE(PIO_ASR, 0x06000000);
317 PIOA_WRITE(PIO_PDR, 0x06000000);
318 PIOA_WRITE(PIO_MDER, 0x06000000);
319 }
320 break;
321
322 case PID_SPI0:
323 if (enable) {
324 PIOA_WRITE(PIO_ASR, 0x0000000f);
325 PIOA_WRITE(PIO_PDR, 0x0000000f);
326 }
327 break;
328
329 case PID_SPI1:
330 if (enable) {
331 PIOB_WRITE(PIO_ASR, 0x0000000f);
332 PIOB_WRITE(PIO_PDR, 0x0000000f);
333 }
334 break;
335 }
336 (*old_at91bus_tag->peripheral_clock)(pid, enable);
337 }
338
339
mmnet_device_register(device_t dev,void * aux)340 static void mmnet_device_register(device_t dev, void *aux)
341 {
342 #if 0
343 if (device_is_a(dev, "at91semac")) {
344 // propagate mac address from u-boot
345 }
346 #endif
347 }
348