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Linux-2.6.12-rc2
[linux-2.6/kvm.git] / arch / mips / momentum / jaguar_atx / setup.c
blob30462e715066a469437b303775d1073230b1edc4
1 /*
2 * BRIEF MODULE DESCRIPTION
3 * Momentum Computer Jaguar-ATX board dependent boot routines
4 *
5 * Copyright (C) 1996, 1997, 2001, 2004 Ralf Baechle (ralf@linux-mips.org)
6 * Copyright (C) 2000 RidgeRun, Inc.
7 * Copyright (C) 2001 Red Hat, Inc.
8 * Copyright (C) 2002 Momentum Computer
9 *
10 * Author: Matthew Dharm, Momentum Computer
11 * mdharm@momenco.com
12 *
13 * Louis Hamilton, Red Hat, Inc.
14 * hamilton@redhat.com [MIPS64 modifications]
15 *
16 * Author: RidgeRun, Inc.
17 * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
18 *
19 * Copyright 2001 MontaVista Software Inc.
20 * Author: jsun@mvista.com or jsun@junsun.net
21 *
22 * This program is free software; you can redistribute it and/or modify it
23 * under the terms of the GNU General Public License as published by the
24 * Free Software Foundation; either version 2 of the License, or (at your
25 * option) any later version.
26 *
27 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
28 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
29 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
30 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
31 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
33 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
34 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 * You should have received a copy of the GNU General Public License along
39 * with this program; if not, write to the Free Software Foundation, Inc.,
40 * 675 Mass Ave, Cambridge, MA 02139, USA.
41 */
42 #include <linux/config.h>
43 #include <linux/bcd.h>
44 #include <linux/init.h>
45 #include <linux/kernel.h>
46 #include <linux/types.h>
47 #include <linux/mm.h>
48 #include <linux/bootmem.h>
49 #include <linux/module.h>
50 #include <linux/pci.h>
51 #include <linux/swap.h>
52 #include <linux/ioport.h>
53 #include <linux/sched.h>
54 #include <linux/interrupt.h>
55 #include <linux/timex.h>
56 #include <linux/vmalloc.h>
57 #include <asm/time.h>
58 #include <asm/bootinfo.h>
59 #include <asm/page.h>
60 #include <asm/io.h>
61 #include <asm/irq.h>
62 #include <asm/processor.h>
63 #include <asm/ptrace.h>
64 #include <asm/reboot.h>
65 #include <asm/tlbflush.h>
66 #include <asm/mv64340.h>
67
68 #include "jaguar_atx_fpga.h"
69
70 extern unsigned long mv64340_sram_base;
71 unsigned long cpu_clock;
72
73 /* These functions are used for rebooting or halting the machine*/
74 extern void momenco_jaguar_restart(char *command);
75 extern void momenco_jaguar_halt(void);
76 extern void momenco_jaguar_power_off(void);
77
78 void momenco_time_init(void);
79
80 static char reset_reason;
81
82 static inline unsigned long ENTRYLO(unsigned long paddr)
83 {
84 return ((paddr & PAGE_MASK) |
85 (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL |
86 _CACHE_UNCACHED)) >> 6;
87 }
88
89 void __init bus_error_init(void) { /* nothing */ }
90
91 /*
92 * Load a few TLB entries for the MV64340 and perhiperals. The MV64340 is going
93 * to be hit on every IRQ anyway - there's absolutely no point in letting it be
94 * a random TLB entry, as it'll just cause needless churning of the TLB. And we
95 * use the other half for the serial port, which is just a PITA otherwise :)
96 *
97 * Device Physical Virtual
98 * MV64340 Internal Regs 0xf4000000 0xf4000000
99 * Ocelot-C[S] PLD (CS0) 0xfc000000 0xfc000000
100 * NVRAM (CS1) 0xfc800000 0xfc800000
101 * UARTs (CS2) 0xfd000000 0xfd000000
102 * Internal SRAM 0xfe000000 0xfe000000
103 * M-Systems DOC (CS3) 0xff000000 0xff000000
104 */
105
106 static __init void wire_stupidity_into_tlb(void)
107 {
108 #ifdef CONFIG_MIPS32
109 write_c0_wired(0);
110 local_flush_tlb_all();
111
112 /* marvell and extra space */
113 add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000),
114 0xf4000000UL, PM_64K);
115 /* fpga, rtc, and uart */
116 add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000),
117 0xfc000000UL, PM_16M);
118 // /* m-sys and internal SRAM */
119 // add_wired_entry(ENTRYLO(0xfe000000), ENTRYLO(0xff000000),
120 // 0xfe000000UL, PM_16M);
121
122 marvell_base = 0xf4000000;
123 //mv64340_sram_base = 0xfe000000; /* Currently unused */
124 #endif
125 }
126
127 unsigned long marvell_base = 0xf4000000L;
128 unsigned long ja_fpga_base = JAGUAR_ATX_CS0_ADDR;
129 unsigned long uart_base = 0xfd000000L;
130 static unsigned char *rtc_base = (unsigned char*) 0xfc800000L;
131
132 EXPORT_SYMBOL(marvell_base);
133
134 static __init int per_cpu_mappings(void)
135 {
136 marvell_base = (unsigned long) ioremap(0xf4000000, 0x10000);
137 ja_fpga_base = (unsigned long) ioremap(JAGUAR_ATX_CS0_ADDR, 0x1000);
138 uart_base = (unsigned long) ioremap(0xfd000000UL, 0x1000);
139 rtc_base = ioremap(0xfc000000UL, 0x8000);
140 // ioremap(0xfe000000, 32 << 20);
141 write_c0_wired(0);
142 local_flush_tlb_all();
143 ja_setup_console();
144
145 return 0;
146 }
147 arch_initcall(per_cpu_mappings);
148
149 unsigned long m48t37y_get_time(void)
150 {
151 unsigned int year, month, day, hour, min, sec;
152
153 /* stop the update */
154 rtc_base[0x7ff8] = 0x40;
155
156 year = BCD2BIN(rtc_base[0x7fff]);
157 year += BCD2BIN(rtc_base[0x7ff1]) * 100;
158
159 month = BCD2BIN(rtc_base[0x7ffe]);
160
161 day = BCD2BIN(rtc_base[0x7ffd]);
162
163 hour = BCD2BIN(rtc_base[0x7ffb]);
164 min = BCD2BIN(rtc_base[0x7ffa]);
165 sec = BCD2BIN(rtc_base[0x7ff9]);
166
167 /* start the update */
168 rtc_base[0x7ff8] = 0x00;
169
170 return mktime(year, month, day, hour, min, sec);
171 }
172
173 int m48t37y_set_time(unsigned long sec)
174 {
175 struct rtc_time tm;
176
177 /* convert to a more useful format -- note months count from 0 */
178 to_tm(sec, &tm);
179 tm.tm_mon += 1;
180
181 /* enable writing */
182 rtc_base[0x7ff8] = 0x80;
183
184 /* year */
185 rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100);
186 rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100);
187
188 /* month */
189 rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon);
190
191 /* day */
192 rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday);
193
194 /* hour/min/sec */
195 rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour);
196 rtc_base[0x7ffa] = BIN2BCD(tm.tm_min);
197 rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec);
198
199 /* day of week -- not really used, but let's keep it up-to-date */
200 rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1);
201
202 /* disable writing */
203 rtc_base[0x7ff8] = 0x00;
204
205 return 0;
206 }
207
208 void momenco_timer_setup(struct irqaction *irq)
209 {
210 setup_irq(8, irq);
211 }
212
213 /*
214 * Ugly but the least of all evils. TLB initialization did flush the TLB so
215 * We need to setup mappings again before we can touch the RTC.
216 */
217 void momenco_time_init(void)
218 {
219 wire_stupidity_into_tlb();
220
221 mips_hpt_frequency = cpu_clock / 2;
222 board_timer_setup = momenco_timer_setup;
223
224 rtc_get_time = m48t37y_get_time;
225 rtc_set_time = m48t37y_set_time;
226 }
227
228 static struct resource mv_pci_io_mem0_resource = {
229 .name = "MV64340 PCI0 IO MEM",
230 .flags = IORESOURCE_IO
231 };
232
233 static struct resource mv_pci_mem0_resource = {
234 .name = "MV64340 PCI0 MEM",
235 .flags = IORESOURCE_MEM
236 };
237
238 static struct mv_pci_controller mv_bus0_controller = {
239 .pcic = {
240 .pci_ops = &mv_pci_ops,
241 .mem_resource = &mv_pci_mem0_resource,
242 .io_resource = &mv_pci_io_mem0_resource,
243 },
244 .config_addr = MV64340_PCI_0_CONFIG_ADDR,
245 .config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG,
246 };
247
248 static uint32_t mv_io_base, mv_io_size;
249
250 static void ja_pci0_init(void)
251 {
252 uint32_t mem0_base, mem0_size;
253 uint32_t io_base, io_size;
254
255 io_base = MV_READ(MV64340_PCI_0_IO_BASE_ADDR) << 16;
256 io_size = (MV_READ(MV64340_PCI_0_IO_SIZE) + 1) << 16;
257 mem0_base = MV_READ(MV64340_PCI_0_MEMORY0_BASE_ADDR) << 16;
258 mem0_size = (MV_READ(MV64340_PCI_0_MEMORY0_SIZE) + 1) << 16;
259
260 mv_pci_io_mem0_resource.start = 0;
261 mv_pci_io_mem0_resource.end = io_size - 1;
262 mv_pci_mem0_resource.start = mem0_base;
263 mv_pci_mem0_resource.end = mem0_base + mem0_size - 1;
264 mv_bus0_controller.pcic.mem_offset = mem0_base;
265 mv_bus0_controller.pcic.io_offset = 0;
266
267 ioport_resource.end = io_size - 1;
268
269 register_pci_controller(&mv_bus0_controller.pcic);
270
271 mv_io_base = io_base;
272 mv_io_size = io_size;
273 }
274
275 static struct resource mv_pci_io_mem1_resource = {
276 .name = "MV64340 PCI1 IO MEM",
277 .flags = IORESOURCE_IO
278 };
279
280 static struct resource mv_pci_mem1_resource = {
281 .name = "MV64340 PCI1 MEM",
282 .flags = IORESOURCE_MEM
283 };
284
285 static struct mv_pci_controller mv_bus1_controller = {
286 .pcic = {
287 .pci_ops = &mv_pci_ops,
288 .mem_resource = &mv_pci_mem1_resource,
289 .io_resource = &mv_pci_io_mem1_resource,
290 },
291 .config_addr = MV64340_PCI_1_CONFIG_ADDR,
292 .config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG,
293 };
294
295 static __init void ja_pci1_init(void)
296 {
297 uint32_t mem0_base, mem0_size;
298 uint32_t io_base, io_size;
299
300 io_base = MV_READ(MV64340_PCI_1_IO_BASE_ADDR) << 16;
301 io_size = (MV_READ(MV64340_PCI_1_IO_SIZE) + 1) << 16;
302 mem0_base = MV_READ(MV64340_PCI_1_MEMORY0_BASE_ADDR) << 16;
303 mem0_size = (MV_READ(MV64340_PCI_1_MEMORY0_SIZE) + 1) << 16;
304
305 /*
306 * Here we assume the I/O window of second bus to be contiguous with
307 * the first. A gap is no problem but would waste address space for
308 * remapping the port space.
309 */
310 mv_pci_io_mem1_resource.start = mv_io_size;
311 mv_pci_io_mem1_resource.end = mv_io_size + io_size - 1;
312 mv_pci_mem1_resource.start = mem0_base;
313 mv_pci_mem1_resource.end = mem0_base + mem0_size - 1;
314 mv_bus1_controller.pcic.mem_offset = mem0_base;
315 mv_bus1_controller.pcic.io_offset = 0;
316
317 ioport_resource.end = io_base + io_size -mv_io_base - 1;
318
319 register_pci_controller(&mv_bus1_controller.pcic);
320
321 mv_io_size = io_base + io_size - mv_io_base;
322 }
323
324 static __init int __init ja_pci_init(void)
325 {
326 unsigned long io_v_base;
327 uint32_t enable;
328
329 enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE);
330
331 /*
332 * We require at least one enabled I/O or PCI memory window or we
333 * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3.
334 */
335 if (enable & (0x01 << 9) || enable & (0x01 << 10))
336 ja_pci0_init();
337
338 if (enable & (0x01 << 14) || enable & (0x01 << 15))
339 ja_pci1_init();
340
341 if (mv_io_size) {
342 io_v_base = (unsigned long) ioremap(mv_io_base, mv_io_size);
343 if (!io_v_base)
344 panic("Could not ioremap I/O port range");
345
346 set_io_port_base(io_v_base);
347 }
348
349 return 0;
350 }
351
352 arch_initcall(ja_pci_init);
353
354 static int __init momenco_jaguar_atx_setup(void)
355 {
356 unsigned int tmpword;
357
358 board_time_init = momenco_time_init;
359
360 _machine_restart = momenco_jaguar_restart;
361 _machine_halt = momenco_jaguar_halt;
362 _machine_power_off = momenco_jaguar_power_off;
363
364 /*
365 * initrd_start = (ulong)jaguar_initrd_start;
366 * initrd_end = (ulong)jaguar_initrd_start + (ulong)jaguar_initrd_size;
367 * initrd_below_start_ok = 1;
368 */
369
370 wire_stupidity_into_tlb();
371
372 /*
373 * shut down ethernet ports, just to be sure our memory doesn't get
374 * corrupted by random ethernet traffic.
375 */
376 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
377 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
378 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(2), 0xff << 8);
379 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
380 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
381 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(2), 0xff << 8);
382 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
383 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
384 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(2)) & 0xff);
385 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
386 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
387 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(2)) & 0xff);
388 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0),
389 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
390 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1),
391 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
392 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(2),
393 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(2)) & ~1);
394
395 /* Turn off the Bit-Error LED */
396 JAGUAR_FPGA_WRITE(0x80, CLR);
397
398 tmpword = JAGUAR_FPGA_READ(BOARDREV);
399 if (tmpword < 26)
400 printk("Momentum Jaguar-ATX: Board Assembly Rev. %c\n",
401 'A'+tmpword);
402 else
403 printk("Momentum Jaguar-ATX: Board Assembly Revision #0x%x\n",
404 tmpword);
405
406 tmpword = JAGUAR_FPGA_READ(FPGA_REV);
407 printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
408 tmpword = JAGUAR_FPGA_READ(RESET_STATUS);
409 printk("Reset reason: 0x%x\n", tmpword);
410 switch (tmpword) {
411 case 0x1:
412 printk(" - Power-up reset\n");
413 break;
414 case 0x2:
415 printk(" - Push-button reset\n");
416 break;
417 case 0x8:
418 printk(" - Watchdog reset\n");
419 break;
420 case 0x10:
421 printk(" - JTAG reset\n");
422 break;
423 default:
424 printk(" - Unknown reset cause\n");
425 }
426 reset_reason = tmpword;
427 JAGUAR_FPGA_WRITE(0xff, RESET_STATUS);
428
429 tmpword = JAGUAR_FPGA_READ(BOARD_STATUS);
430 printk("Board Status register: 0x%02x\n", tmpword);
431 printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
432 printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
433
434 /* 256MiB of RM9000x2 DDR */
435 // add_memory_region(0x0, 0x100<<20, BOOT_MEM_RAM);
436
437 /* 128MiB of MV-64340 DDR */
438 // add_memory_region(0x100<<20, 0x80<<20, BOOT_MEM_RAM);
439
440 /* XXX Memory configuration should be picked up from PMON2k */
441 #ifdef CONFIG_JAGUAR_DMALOW
442 printk("Jaguar ATX DMA-low mode set\n");
443 add_memory_region(0x00000000, 0x08000000, BOOT_MEM_RAM);
444 add_memory_region(0x08000000, 0x10000000, BOOT_MEM_RAM);
445 #else
446 /* 128MiB of MV-64340 DDR RAM */
447 printk("Jaguar ATX DMA-low mode is not set\n");
448 add_memory_region(0x100<<20, 0x80<<20, BOOT_MEM_RAM);
449 #endif
450
451 #ifdef GEMDEBUG_TRACEBUFFER
452 {
453 unsigned int tbControl;
454 tbControl =
455 0 << 26 | /* post trigger delay 0 */
456 0x2 << 16 | /* sequential trace mode */
457 // 0x0 << 16 | /* non-sequential trace mode */
458 // 0xf << 4 | /* watchpoints disabled */
459 2 << 2 | /* armed */
460 2 ; /* interrupt disabled */
461 printk ("setting tbControl = %08lx\n", tbControl);
462 write_32bit_cp0_set1_register($22, tbControl);
463 __asm__ __volatile__(".set noreorder\n\t" \
464 "nop; nop; nop; nop; nop; nop;\n\t" \
465 "nop; nop; nop; nop; nop; nop;\n\t" \
466 ".set reorder\n\t");
467
468 }
469 #endif
470
471 return 0;
472 }
473
474 early_initcall(momenco_jaguar_atx_setup);
kernel-based virtual machine