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1da177e4 LT |
1 | /* |
2 | * BRIEF MODULE DESCRIPTION | |
3 | * Momentum Computer Jaguar-ATX board dependent boot routines | |
4 | * | |
3367fd50 | 5 | * Copyright (C) 1996, 1997, 2001, 04, 06 Ralf Baechle (ralf@linux-mips.org) |
1da177e4 LT |
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> | |
fcdb27ad | 53 | #include <linux/pm.h> |
1da177e4 LT |
54 | #include <linux/sched.h> |
55 | #include <linux/interrupt.h> | |
56 | #include <linux/timex.h> | |
57 | #include <linux/vmalloc.h> | |
3367fd50 RB |
58 | #include <linux/mv643xx.h> |
59 | ||
1da177e4 LT |
60 | #include <asm/time.h> |
61 | #include <asm/bootinfo.h> | |
62 | #include <asm/page.h> | |
63 | #include <asm/io.h> | |
64 | #include <asm/irq.h> | |
65 | #include <asm/processor.h> | |
66 | #include <asm/ptrace.h> | |
67 | #include <asm/reboot.h> | |
68 | #include <asm/tlbflush.h> | |
1da177e4 LT |
69 | |
70 | #include "jaguar_atx_fpga.h" | |
71 | ||
72 | extern unsigned long mv64340_sram_base; | |
73 | unsigned long cpu_clock; | |
74 | ||
75 | /* These functions are used for rebooting or halting the machine*/ | |
76 | extern void momenco_jaguar_restart(char *command); | |
77 | extern void momenco_jaguar_halt(void); | |
78 | extern void momenco_jaguar_power_off(void); | |
79 | ||
80 | void momenco_time_init(void); | |
81 | ||
82 | static char reset_reason; | |
83 | ||
84 | static inline unsigned long ENTRYLO(unsigned long paddr) | |
85 | { | |
86 | return ((paddr & PAGE_MASK) | | |
87 | (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL | | |
88 | _CACHE_UNCACHED)) >> 6; | |
89 | } | |
90 | ||
91 | void __init bus_error_init(void) { /* nothing */ } | |
92 | ||
93 | /* | |
94 | * Load a few TLB entries for the MV64340 and perhiperals. The MV64340 is going | |
95 | * to be hit on every IRQ anyway - there's absolutely no point in letting it be | |
96 | * a random TLB entry, as it'll just cause needless churning of the TLB. And we | |
97 | * use the other half for the serial port, which is just a PITA otherwise :) | |
98 | * | |
99 | * Device Physical Virtual | |
100 | * MV64340 Internal Regs 0xf4000000 0xf4000000 | |
101 | * Ocelot-C[S] PLD (CS0) 0xfc000000 0xfc000000 | |
102 | * NVRAM (CS1) 0xfc800000 0xfc800000 | |
103 | * UARTs (CS2) 0xfd000000 0xfd000000 | |
104 | * Internal SRAM 0xfe000000 0xfe000000 | |
105 | * M-Systems DOC (CS3) 0xff000000 0xff000000 | |
106 | */ | |
107 | ||
108 | static __init void wire_stupidity_into_tlb(void) | |
109 | { | |
875d43e7 | 110 | #ifdef CONFIG_32BIT |
1da177e4 LT |
111 | write_c0_wired(0); |
112 | local_flush_tlb_all(); | |
113 | ||
114 | /* marvell and extra space */ | |
115 | add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000), | |
116 | 0xf4000000UL, PM_64K); | |
117 | /* fpga, rtc, and uart */ | |
118 | add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), | |
119 | 0xfc000000UL, PM_16M); | |
120 | // /* m-sys and internal SRAM */ | |
121 | // add_wired_entry(ENTRYLO(0xfe000000), ENTRYLO(0xff000000), | |
122 | // 0xfe000000UL, PM_16M); | |
123 | ||
124 | marvell_base = 0xf4000000; | |
125 | //mv64340_sram_base = 0xfe000000; /* Currently unused */ | |
126 | #endif | |
127 | } | |
128 | ||
129 | unsigned long marvell_base = 0xf4000000L; | |
130 | unsigned long ja_fpga_base = JAGUAR_ATX_CS0_ADDR; | |
131 | unsigned long uart_base = 0xfd000000L; | |
132 | static unsigned char *rtc_base = (unsigned char*) 0xfc800000L; | |
133 | ||
134 | EXPORT_SYMBOL(marvell_base); | |
135 | ||
136 | static __init int per_cpu_mappings(void) | |
137 | { | |
138 | marvell_base = (unsigned long) ioremap(0xf4000000, 0x10000); | |
139 | ja_fpga_base = (unsigned long) ioremap(JAGUAR_ATX_CS0_ADDR, 0x1000); | |
140 | uart_base = (unsigned long) ioremap(0xfd000000UL, 0x1000); | |
141 | rtc_base = ioremap(0xfc000000UL, 0x8000); | |
142 | // ioremap(0xfe000000, 32 << 20); | |
143 | write_c0_wired(0); | |
144 | local_flush_tlb_all(); | |
145 | ja_setup_console(); | |
146 | ||
147 | return 0; | |
148 | } | |
149 | arch_initcall(per_cpu_mappings); | |
150 | ||
151 | unsigned long m48t37y_get_time(void) | |
152 | { | |
153 | unsigned int year, month, day, hour, min, sec; | |
53c2df2f | 154 | unsigned long flags; |
1da177e4 | 155 | |
53c2df2f | 156 | spin_lock_irqsave(&rtc_lock, flags); |
1da177e4 LT |
157 | /* stop the update */ |
158 | rtc_base[0x7ff8] = 0x40; | |
159 | ||
160 | year = BCD2BIN(rtc_base[0x7fff]); | |
161 | year += BCD2BIN(rtc_base[0x7ff1]) * 100; | |
162 | ||
163 | month = BCD2BIN(rtc_base[0x7ffe]); | |
164 | ||
165 | day = BCD2BIN(rtc_base[0x7ffd]); | |
166 | ||
167 | hour = BCD2BIN(rtc_base[0x7ffb]); | |
168 | min = BCD2BIN(rtc_base[0x7ffa]); | |
169 | sec = BCD2BIN(rtc_base[0x7ff9]); | |
170 | ||
171 | /* start the update */ | |
172 | rtc_base[0x7ff8] = 0x00; | |
53c2df2f | 173 | spin_unlock_irqrestore(&rtc_lock, flags); |
1da177e4 LT |
174 | |
175 | return mktime(year, month, day, hour, min, sec); | |
176 | } | |
177 | ||
178 | int m48t37y_set_time(unsigned long sec) | |
179 | { | |
180 | struct rtc_time tm; | |
53c2df2f | 181 | unsigned long flags; |
1da177e4 LT |
182 | |
183 | /* convert to a more useful format -- note months count from 0 */ | |
184 | to_tm(sec, &tm); | |
185 | tm.tm_mon += 1; | |
186 | ||
53c2df2f | 187 | spin_lock_irqsave(&rtc_lock, flags); |
1da177e4 LT |
188 | /* enable writing */ |
189 | rtc_base[0x7ff8] = 0x80; | |
190 | ||
191 | /* year */ | |
192 | rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100); | |
193 | rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100); | |
194 | ||
195 | /* month */ | |
196 | rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon); | |
197 | ||
198 | /* day */ | |
199 | rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday); | |
200 | ||
201 | /* hour/min/sec */ | |
202 | rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour); | |
203 | rtc_base[0x7ffa] = BIN2BCD(tm.tm_min); | |
204 | rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec); | |
205 | ||
206 | /* day of week -- not really used, but let's keep it up-to-date */ | |
207 | rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1); | |
208 | ||
209 | /* disable writing */ | |
210 | rtc_base[0x7ff8] = 0x00; | |
53c2df2f | 211 | spin_unlock_irqrestore(&rtc_lock, flags); |
1da177e4 LT |
212 | |
213 | return 0; | |
214 | } | |
215 | ||
216 | void momenco_timer_setup(struct irqaction *irq) | |
217 | { | |
218 | setup_irq(8, irq); | |
219 | } | |
220 | ||
221 | /* | |
222 | * Ugly but the least of all evils. TLB initialization did flush the TLB so | |
223 | * We need to setup mappings again before we can touch the RTC. | |
224 | */ | |
225 | void momenco_time_init(void) | |
226 | { | |
227 | wire_stupidity_into_tlb(); | |
228 | ||
229 | mips_hpt_frequency = cpu_clock / 2; | |
230 | board_timer_setup = momenco_timer_setup; | |
231 | ||
d23ee8fe YY |
232 | rtc_mips_get_time = m48t37y_get_time; |
233 | rtc_mips_set_time = m48t37y_set_time; | |
1da177e4 LT |
234 | } |
235 | ||
236 | static struct resource mv_pci_io_mem0_resource = { | |
237 | .name = "MV64340 PCI0 IO MEM", | |
238 | .flags = IORESOURCE_IO | |
239 | }; | |
240 | ||
241 | static struct resource mv_pci_mem0_resource = { | |
242 | .name = "MV64340 PCI0 MEM", | |
243 | .flags = IORESOURCE_MEM | |
244 | }; | |
245 | ||
246 | static struct mv_pci_controller mv_bus0_controller = { | |
247 | .pcic = { | |
248 | .pci_ops = &mv_pci_ops, | |
249 | .mem_resource = &mv_pci_mem0_resource, | |
250 | .io_resource = &mv_pci_io_mem0_resource, | |
251 | }, | |
252 | .config_addr = MV64340_PCI_0_CONFIG_ADDR, | |
253 | .config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG, | |
254 | }; | |
255 | ||
256 | static uint32_t mv_io_base, mv_io_size; | |
257 | ||
258 | static void ja_pci0_init(void) | |
259 | { | |
260 | uint32_t mem0_base, mem0_size; | |
261 | uint32_t io_base, io_size; | |
262 | ||
263 | io_base = MV_READ(MV64340_PCI_0_IO_BASE_ADDR) << 16; | |
264 | io_size = (MV_READ(MV64340_PCI_0_IO_SIZE) + 1) << 16; | |
265 | mem0_base = MV_READ(MV64340_PCI_0_MEMORY0_BASE_ADDR) << 16; | |
266 | mem0_size = (MV_READ(MV64340_PCI_0_MEMORY0_SIZE) + 1) << 16; | |
267 | ||
268 | mv_pci_io_mem0_resource.start = 0; | |
269 | mv_pci_io_mem0_resource.end = io_size - 1; | |
270 | mv_pci_mem0_resource.start = mem0_base; | |
271 | mv_pci_mem0_resource.end = mem0_base + mem0_size - 1; | |
272 | mv_bus0_controller.pcic.mem_offset = mem0_base; | |
273 | mv_bus0_controller.pcic.io_offset = 0; | |
274 | ||
275 | ioport_resource.end = io_size - 1; | |
276 | ||
277 | register_pci_controller(&mv_bus0_controller.pcic); | |
278 | ||
279 | mv_io_base = io_base; | |
280 | mv_io_size = io_size; | |
281 | } | |
282 | ||
283 | static struct resource mv_pci_io_mem1_resource = { | |
284 | .name = "MV64340 PCI1 IO MEM", | |
285 | .flags = IORESOURCE_IO | |
286 | }; | |
287 | ||
288 | static struct resource mv_pci_mem1_resource = { | |
289 | .name = "MV64340 PCI1 MEM", | |
290 | .flags = IORESOURCE_MEM | |
291 | }; | |
292 | ||
293 | static struct mv_pci_controller mv_bus1_controller = { | |
294 | .pcic = { | |
295 | .pci_ops = &mv_pci_ops, | |
296 | .mem_resource = &mv_pci_mem1_resource, | |
297 | .io_resource = &mv_pci_io_mem1_resource, | |
298 | }, | |
299 | .config_addr = MV64340_PCI_1_CONFIG_ADDR, | |
300 | .config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG, | |
301 | }; | |
302 | ||
303 | static __init void ja_pci1_init(void) | |
304 | { | |
305 | uint32_t mem0_base, mem0_size; | |
306 | uint32_t io_base, io_size; | |
307 | ||
308 | io_base = MV_READ(MV64340_PCI_1_IO_BASE_ADDR) << 16; | |
309 | io_size = (MV_READ(MV64340_PCI_1_IO_SIZE) + 1) << 16; | |
310 | mem0_base = MV_READ(MV64340_PCI_1_MEMORY0_BASE_ADDR) << 16; | |
311 | mem0_size = (MV_READ(MV64340_PCI_1_MEMORY0_SIZE) + 1) << 16; | |
312 | ||
313 | /* | |
314 | * Here we assume the I/O window of second bus to be contiguous with | |
315 | * the first. A gap is no problem but would waste address space for | |
316 | * remapping the port space. | |
317 | */ | |
318 | mv_pci_io_mem1_resource.start = mv_io_size; | |
319 | mv_pci_io_mem1_resource.end = mv_io_size + io_size - 1; | |
320 | mv_pci_mem1_resource.start = mem0_base; | |
321 | mv_pci_mem1_resource.end = mem0_base + mem0_size - 1; | |
322 | mv_bus1_controller.pcic.mem_offset = mem0_base; | |
323 | mv_bus1_controller.pcic.io_offset = 0; | |
324 | ||
325 | ioport_resource.end = io_base + io_size -mv_io_base - 1; | |
326 | ||
327 | register_pci_controller(&mv_bus1_controller.pcic); | |
328 | ||
329 | mv_io_size = io_base + io_size - mv_io_base; | |
330 | } | |
331 | ||
332 | static __init int __init ja_pci_init(void) | |
333 | { | |
334 | unsigned long io_v_base; | |
335 | uint32_t enable; | |
336 | ||
337 | enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE); | |
338 | ||
339 | /* | |
340 | * We require at least one enabled I/O or PCI memory window or we | |
341 | * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3. | |
342 | */ | |
343 | if (enable & (0x01 << 9) || enable & (0x01 << 10)) | |
344 | ja_pci0_init(); | |
345 | ||
346 | if (enable & (0x01 << 14) || enable & (0x01 << 15)) | |
347 | ja_pci1_init(); | |
348 | ||
349 | if (mv_io_size) { | |
350 | io_v_base = (unsigned long) ioremap(mv_io_base, mv_io_size); | |
351 | if (!io_v_base) | |
352 | panic("Could not ioremap I/O port range"); | |
353 | ||
354 | set_io_port_base(io_v_base); | |
355 | } | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | arch_initcall(ja_pci_init); | |
361 | ||
c83cfc9c | 362 | void __init plat_setup(void) |
1da177e4 LT |
363 | { |
364 | unsigned int tmpword; | |
365 | ||
366 | board_time_init = momenco_time_init; | |
367 | ||
368 | _machine_restart = momenco_jaguar_restart; | |
369 | _machine_halt = momenco_jaguar_halt; | |
fcdb27ad | 370 | pm_power_off = momenco_jaguar_power_off; |
1da177e4 LT |
371 | |
372 | /* | |
373 | * initrd_start = (ulong)jaguar_initrd_start; | |
374 | * initrd_end = (ulong)jaguar_initrd_start + (ulong)jaguar_initrd_size; | |
375 | * initrd_below_start_ok = 1; | |
376 | */ | |
377 | ||
378 | wire_stupidity_into_tlb(); | |
379 | ||
380 | /* | |
381 | * shut down ethernet ports, just to be sure our memory doesn't get | |
382 | * corrupted by random ethernet traffic. | |
383 | */ | |
384 | MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8); | |
385 | MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8); | |
386 | MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(2), 0xff << 8); | |
387 | MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8); | |
388 | MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8); | |
389 | MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(2), 0xff << 8); | |
390 | while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff); | |
391 | while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff); | |
392 | while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(2)) & 0xff); | |
393 | while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff); | |
394 | while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff); | |
395 | while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(2)) & 0xff); | |
396 | MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0), | |
397 | MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1); | |
398 | MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1), | |
399 | MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1); | |
400 | MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(2), | |
401 | MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(2)) & ~1); | |
402 | ||
403 | /* Turn off the Bit-Error LED */ | |
404 | JAGUAR_FPGA_WRITE(0x80, CLR); | |
405 | ||
406 | tmpword = JAGUAR_FPGA_READ(BOARDREV); | |
407 | if (tmpword < 26) | |
408 | printk("Momentum Jaguar-ATX: Board Assembly Rev. %c\n", | |
409 | 'A'+tmpword); | |
410 | else | |
411 | printk("Momentum Jaguar-ATX: Board Assembly Revision #0x%x\n", | |
412 | tmpword); | |
413 | ||
414 | tmpword = JAGUAR_FPGA_READ(FPGA_REV); | |
415 | printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15); | |
416 | tmpword = JAGUAR_FPGA_READ(RESET_STATUS); | |
417 | printk("Reset reason: 0x%x\n", tmpword); | |
418 | switch (tmpword) { | |
419 | case 0x1: | |
420 | printk(" - Power-up reset\n"); | |
421 | break; | |
422 | case 0x2: | |
423 | printk(" - Push-button reset\n"); | |
424 | break; | |
425 | case 0x8: | |
426 | printk(" - Watchdog reset\n"); | |
427 | break; | |
428 | case 0x10: | |
429 | printk(" - JTAG reset\n"); | |
430 | break; | |
431 | default: | |
432 | printk(" - Unknown reset cause\n"); | |
433 | } | |
434 | reset_reason = tmpword; | |
435 | JAGUAR_FPGA_WRITE(0xff, RESET_STATUS); | |
436 | ||
437 | tmpword = JAGUAR_FPGA_READ(BOARD_STATUS); | |
438 | printk("Board Status register: 0x%02x\n", tmpword); | |
439 | printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent"); | |
440 | printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent"); | |
441 | ||
442 | /* 256MiB of RM9000x2 DDR */ | |
443 | // add_memory_region(0x0, 0x100<<20, BOOT_MEM_RAM); | |
444 | ||
445 | /* 128MiB of MV-64340 DDR */ | |
446 | // add_memory_region(0x100<<20, 0x80<<20, BOOT_MEM_RAM); | |
447 | ||
448 | /* XXX Memory configuration should be picked up from PMON2k */ | |
449 | #ifdef CONFIG_JAGUAR_DMALOW | |
450 | printk("Jaguar ATX DMA-low mode set\n"); | |
451 | add_memory_region(0x00000000, 0x08000000, BOOT_MEM_RAM); | |
452 | add_memory_region(0x08000000, 0x10000000, BOOT_MEM_RAM); | |
453 | #else | |
454 | /* 128MiB of MV-64340 DDR RAM */ | |
455 | printk("Jaguar ATX DMA-low mode is not set\n"); | |
456 | add_memory_region(0x100<<20, 0x80<<20, BOOT_MEM_RAM); | |
457 | #endif | |
458 | ||
459 | #ifdef GEMDEBUG_TRACEBUFFER | |
460 | { | |
461 | unsigned int tbControl; | |
42a3b4f2 | 462 | tbControl = |
1da177e4 | 463 | 0 << 26 | /* post trigger delay 0 */ |
a3dddd56 | 464 | 0x2 << 16 | /* sequential trace mode */ |
1da177e4 LT |
465 | // 0x0 << 16 | /* non-sequential trace mode */ |
466 | // 0xf << 4 | /* watchpoints disabled */ | |
467 | 2 << 2 | /* armed */ | |
468 | 2 ; /* interrupt disabled */ | |
469 | printk ("setting tbControl = %08lx\n", tbControl); | |
470 | write_32bit_cp0_set1_register($22, tbControl); | |
471 | __asm__ __volatile__(".set noreorder\n\t" \ | |
472 | "nop; nop; nop; nop; nop; nop;\n\t" \ | |
473 | "nop; nop; nop; nop; nop; nop;\n\t" \ | |
474 | ".set reorder\n\t"); | |
475 | ||
476 | } | |
477 | #endif | |
1da177e4 | 478 | } |