source: mainline/kernel/arch/ia64/src/ia64.c@ 36251c6

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 36251c6 was 50b3d30, checked in by Jakub Vana <jakub.vana@…>, 17 years ago

IA64: repair similators support
  • Property mode set to 100644
File size: 7.0 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup ia64
30 * @{
31 */
32/** @file
33 */
34
35#include <arch.h>
36#include <arch/ski/ski.h>
37#include <arch/drivers/it.h>
38#include <arch/interrupt.h>
39#include <arch/barrier.h>
40#include <arch/asm.h>
41#include <arch/register.h>
42#include <arch/types.h>
43#include <arch/context.h>
44#include <arch/stack.h>
45#include <arch/mm/page.h>
46#include <mm/as.h>
47#include <config.h>
48#include <userspace.h>
49#include <console/console.h>
50#include <proc/uarg.h>
51#include <syscall/syscall.h>
52#include <ddi/irq.h>
53#include <ddi/device.h>
54#include <arch/drivers/ega.h>
55#include <arch/bootinfo.h>
56#include <genarch/kbd/i8042.h>
57#include <genarch/kbd/ns16550.h>
58#include <smp/smp.h>
59#include <smp/ipi.h>
60#include <arch/atomic.h>
61#include <panic.h>
62#include <print.h>
63#include <sysinfo/sysinfo.h>
64
65/*NS16550 as a COM 1*/
66#define NS16550_IRQ (4+LAGACY_INTERRUPT_BASE)
67#define NS16550_PORT 0x3f8
68
69bootinfo_t *bootinfo;
70
71static uint64_t iosapic_base=0xfec00000;
72
73void arch_pre_main(void)
74{
75 /* Setup usermode init tasks. */
76
77//#ifdef I460GX
78 unsigned int i;
79
80 init.cnt = bootinfo->taskmap.count;
81
82 for (i = 0; i < init.cnt; i++) {
83 init.tasks[i].addr = ((unsigned long) bootinfo->taskmap.tasks[i].addr) | VRN_MASK;
84 init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
85 }
86/*
87#else
88 init.cnt = 8;
89 init.tasks[0].addr = INIT0_ADDRESS;
90 init.tasks[0].size = INIT0_SIZE;
91 init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
92 init.tasks[1].size = INIT0_SIZE;
93 init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
94 init.tasks[2].size = INIT0_SIZE;
95 init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
96 init.tasks[3].size = INIT0_SIZE;
97 init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
98 init.tasks[4].size = INIT0_SIZE;
99 init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
100 init.tasks[5].size = INIT0_SIZE;
101 init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
102 init.tasks[6].size = INIT0_SIZE;
103 init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
104 init.tasks[7].size = INIT0_SIZE;
105#endif*/
106}
107
108void arch_pre_mm_init(void)
109{
110 /* Set Interruption Vector Address (i.e. location of interruption vector table). */
111 iva_write((uintptr_t) &ivt);
112 srlz_d();
113
114}
115
116static void iosapic_init(void)
117{
118
119 uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base))|FW_OFFSET;
120 int i;
121
122 int myid,myeid;
123
124 myid=ia64_get_cpu_id();
125 myeid=ia64_get_cpu_eid();
126
127 for(i=0;i<16;i++)
128 {
129
130 if(i==2) continue; //Disable Cascade interrupt
131 ((uint32_t*)(IOSAPIC+0x00))[0]=0x10+2*i;
132 srlz_d();
133 ((uint32_t*)(IOSAPIC+0x10))[0]=LAGACY_INTERRUPT_BASE+i;
134 srlz_d();
135 ((uint32_t*)(IOSAPIC+0x00))[0]=0x10+2*i+1;
136 srlz_d();
137 ((uint32_t*)(IOSAPIC+0x10))[0]=myid<<(56-32) | myeid<<(48-32);
138 srlz_d();
139 }
140
141}
142
143
144void arch_post_mm_init(void)
145{
146 if(config.cpu_active==1)
147 {
148 iosapic_init();
149
150 irq_init(INR_COUNT, INR_COUNT);
151#ifdef SKI
152 ski_init_console();
153#else
154 ega_init();
155#endif
156 }
157 it_init();
158
159}
160
161void arch_post_cpu_init(void)
162{
163}
164
165void arch_pre_smp_init(void)
166{
167}
168
169
170#ifdef I460GX
171#define POLL_INTERVAL 50000 /* 50 ms */
172/** Kernel thread for polling keyboard. */
173static void i8042_kkbdpoll(void *arg)
174{
175 while (1) {
176#ifdef CONFIG_NS16550
177 #ifndef CONFIG_NS16550_INTERRUPT_DRIVEN
178 ns16550_poll();
179 #endif
180#else
181 #ifndef CONFIG_I8042_INTERRUPT_DRIVEN
182 i8042_poll();
183 #endif
184#endif
185 thread_usleep(POLL_INTERVAL);
186 }
187}
188#endif
189
190
191void end_of_irq_void(void *cir_arg __attribute__((unused)),inr_t inr __attribute__((unused)));
192void end_of_irq_void(void *cir_arg __attribute__((unused)),inr_t inr __attribute__((unused)))
193{
194 return;
195}
196
197
198void arch_post_smp_init(void)
199{
200
201 {
202 /*
203 * Create thread that polls keyboard.
204 */
205#ifdef SKI
206 thread_t *t;
207 t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
208 if (!t)
209 panic("cannot create kkbdpoll\n");
210 thread_ready(t);
211#endif
212
213#ifdef I460GX
214 devno_t kbd = device_assign_devno();
215 /* keyboard controller */
216
217#ifdef CONFIG_NS16550
218 ns16550_init(kbd, NS16550_PORT, NS16550_IRQ,end_of_irq_void,NULL); // as a COM 1
219#else
220 devno_t mouse = device_assign_devno();
221 i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
222#endif
223 thread_t *t;
224 t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
225 if (!t)
226 panic("cannot create kkbdpoll\n");
227 thread_ready(t);
228
229#endif
230
231 }
232
233 sysinfo_set_item_val("ia64_iospace", NULL, true);
234 sysinfo_set_item_val("ia64_iospace.address", NULL, true);
235 sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
236
237
238
239
240
241}
242
243
244/** Enter userspace and never return. */
245void userspace(uspace_arg_t *kernel_uarg)
246{
247 psr_t psr;
248 rsc_t rsc;
249
250 psr.value = psr_read();
251 psr.cpl = PL_USER;
252 psr.i = true; /* start with interrupts enabled */
253 psr.ic = true;
254 psr.ri = 0; /* start with instruction #0 */
255 psr.bn = 1; /* start in bank 0 */
256
257 asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
258 rsc.loadrs = 0;
259 rsc.be = false;
260 rsc.pl = PL_USER;
261 rsc.mode = 3; /* eager mode */
262
263 switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
264 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
265 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
266 (uintptr_t) kernel_uarg->uspace_uarg,
267 psr.value, rsc.value);
268
269 while (1) {
270 ;
271 }
272}
273
274/** Set thread-local-storage pointer.
275 *
276 * We use r13 (a.k.a. tp) for this purpose.
277 */
278unative_t sys_tls_set(unative_t addr)
279{
280 return 0;
281}
282
283/** Acquire console back for kernel
284 *
285 */
286void arch_grab_console(void)
287{
288#ifdef SKI
289 ski_kbd_grab();
290#else
291 #ifdef CONFIG_NS16550
292 ns16550_grab();
293 #else
294 i8042_grab();
295 #endif
296#endif
297}
298/** Return console to userspace
299 *
300 */
301void arch_release_console(void)
302{
303#ifdef SKI
304 ski_kbd_release();
305#else
306 #ifdef CONFIG_NS16550
307 ns16550_release();
308 #else
309 i8042_release();
310 #endif
311
312#endif
313}
314
315void arch_reboot(void)
316{
317 outb(0x64,0xfe);
318 while (1);
319}
320
321/** @}
322 */
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