source: mainline/kernel/arch/ia64/src/ia64.c@ 3da166f0

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 3da166f0 was 21b6307, checked in by Martin Sucha <sucha14@…>, 13 years ago

Merge ns16550_output into ns16550_init.
  • Property mode set to 100644
File size: 7.2 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 <typedefs.h>
37#include <errno.h>
38#include <interrupt.h>
39#include <macros.h>
40#include <str.h>
41#include <userspace.h>
42#include <console/console.h>
43#include <syscall/syscall.h>
44#include <sysinfo/sysinfo.h>
45#include <arch/drivers/it.h>
46#include <arch/drivers/kbd.h>
47#include <arch/legacyio.h>
48#include <genarch/drivers/ega/ega.h>
49#include <genarch/drivers/i8042/i8042.h>
50#include <genarch/drivers/ns16550/ns16550.h>
51#include <genarch/drivers/legacy/ia32/io.h>
52#include <genarch/kbrd/kbrd.h>
53#include <genarch/srln/srln.h>
54#include <mm/page.h>
55#include <mm/km.h>
56
57#ifdef MACHINE_ski
58#include <arch/drivers/ski.h>
59#endif
60
61/* NS16550 as a COM 1 */
62#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
63
64bootinfo_t *bootinfo;
65
66static uint64_t iosapic_base = 0xfec00000;
67uintptr_t legacyio_virt_base = 0;
68
69/** Performs ia64-specific initialization before main_bsp() is called. */
70void arch_pre_main(void)
71{
72 init.cnt = min3(bootinfo->taskmap.cnt, TASKMAP_MAX_RECORDS,
73 CONFIG_INIT_TASKS);
74 size_t i;
75
76 for (i = 0; i < init.cnt; i++) {
77 init.tasks[i].paddr =
78 (uintptr_t) bootinfo->taskmap.tasks[i].addr;
79 init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
80 str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
81 bootinfo->taskmap.tasks[i].name);
82 }
83}
84
85void arch_pre_mm_init(void)
86{
87}
88
89static void iosapic_init(void)
90{
91 uintptr_t IOSAPIC = km_map(iosapic_base, PAGE_SIZE,
92 PAGE_WRITE | PAGE_NOT_CACHEABLE);
93 int i;
94
95 int myid, myeid;
96
97 myid = ia64_get_cpu_id();
98 myeid = ia64_get_cpu_eid();
99
100 for (i = 0; i < 16; i++) {
101 if (i == 2)
102 continue; /* Disable Cascade interrupt */
103 ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
104 srlz_d();
105 ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
106 srlz_d();
107 ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
108 srlz_d();
109 ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
110 myeid << (48 - 32);
111 srlz_d();
112 }
113
114}
115
116void arch_post_mm_init(void)
117{
118 if (config.cpu_active == 1) {
119 /* Map the page with legacy I/O. */
120 legacyio_virt_base = km_map(LEGACYIO_PHYS_BASE, LEGACYIO_SIZE,
121 PAGE_WRITE | PAGE_NOT_CACHEABLE);
122
123 iosapic_init();
124 irq_init(INR_COUNT, INR_COUNT);
125 }
126 it_init();
127}
128
129void arch_post_cpu_init(void)
130{
131}
132
133void arch_pre_smp_init(void)
134{
135}
136
137void arch_post_smp_init(void)
138{
139 static const char *platform;
140
141 /* Set platform name. */
142#ifdef MACHINE_ski
143 platform = "ski";
144#endif
145#ifdef MACHINE_i460GX
146 platform = "pc";
147#endif
148 sysinfo_set_item_data("platform", NULL, (void *) platform,
149 str_size(platform));
150
151#ifdef MACHINE_ski
152 ski_instance_t *ski_instance = skiin_init();
153 if (ski_instance) {
154 srln_instance_t *srln_instance = srln_init();
155 if (srln_instance) {
156 indev_t *sink = stdin_wire();
157 indev_t *srln = srln_wire(srln_instance, sink);
158 skiin_wire(ski_instance, srln);
159 }
160 }
161
162 outdev_t *skidev = skiout_init();
163 if (skidev)
164 stdout_wire(skidev);
165#endif
166
167#ifdef CONFIG_EGA
168 outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
169 if (egadev)
170 stdout_wire(egadev);
171#endif
172
173#ifdef CONFIG_NS16550
174 ns16550_instance_t *ns16550_instance
175 = ns16550_init((ns16550_t *) NS16550_BASE, NS16550_IRQ, NULL, NULL,
176 NULL);
177 if (ns16550_instance) {
178 srln_instance_t *srln_instance = srln_init();
179 if (srln_instance) {
180 indev_t *sink = stdin_wire();
181 indev_t *srln = srln_wire(srln_instance, sink);
182 ns16550_wire(ns16550_instance, srln);
183 }
184 }
185
186 sysinfo_set_item_val("kbd", NULL, true);
187 sysinfo_set_item_val("kbd.inr", NULL, NS16550_IRQ);
188 sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
189 sysinfo_set_item_val("kbd.address.physical", NULL,
190 (uintptr_t) NS16550_BASE);
191#endif
192
193#ifdef CONFIG_I8042
194 i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE,
195 IRQ_KBD);
196 if (i8042_instance) {
197 kbrd_instance_t *kbrd_instance = kbrd_init();
198 if (kbrd_instance) {
199 indev_t *sink = stdin_wire();
200 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
201 i8042_wire(i8042_instance, kbrd);
202 }
203 }
204#endif
205
206 sysinfo_set_item_val("ia64_iospace", NULL, true);
207 sysinfo_set_item_val("ia64_iospace.address", NULL, true);
208 sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, LEGACYIO_USER_BASE);
209}
210
211
212/** Enter userspace and never return. */
213void userspace(uspace_arg_t *kernel_uarg)
214{
215 psr_t psr;
216 rsc_t rsc;
217
218 psr.value = psr_read();
219 psr.cpl = PL_USER;
220 psr.i = true; /* start with interrupts enabled */
221 psr.ic = true;
222 psr.ri = 0; /* start with instruction #0 */
223 psr.bn = 1; /* start in bank 0 */
224
225 asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
226 rsc.loadrs = 0;
227 rsc.be = false;
228 rsc.pl = PL_USER;
229 rsc.mode = 3; /* eager mode */
230
231 /*
232 * Switch to userspace.
233 *
234 * When calculating stack addresses, mind the stack split between the
235 * memory stack and the RSE stack. Each occuppies
236 * uspace_stack_size / 2 bytes.
237 */
238 switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
239 ((uintptr_t) kernel_uarg->uspace_stack) +
240 kernel_uarg->uspace_stack_size / 2 -
241 ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
242 ((uintptr_t) kernel_uarg->uspace_stack) +
243 kernel_uarg->uspace_stack_size / 2,
244 (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
245
246 while (1);
247}
248
249/** Set thread-local-storage pointer.
250 *
251 * We use r13 (a.k.a. tp) for this purpose.
252 */
253sysarg_t sys_tls_set(uintptr_t addr)
254{
255 return EOK;
256}
257
258void arch_reboot(void)
259{
260 pio_write_8((ioport8_t *)0x64, 0xfe);
261 while (1);
262}
263
264/** Construct function pointer
265 *
266 * @param fptr function pointer structure
267 * @param addr function address
268 * @param caller calling function address
269 *
270 * @return address of the function pointer
271 *
272 */
273void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
274{
275 fptr->fnc = (sysarg_t) addr;
276 fptr->gp = ((sysarg_t *) caller)[1];
277
278 return (void *) fptr;
279}
280
281void irq_initialize_arch(irq_t *irq)
282{
283 (void) irq;
284}
285
286/** @}
287 */
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