source: mainline/kernel/arch/ia64/src/ia64.c@ a31aad1

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since a31aad1 was a31aad1, checked in by Jakub Jermar <jakub@…>, 13 years ago

Define PIO range for the ns16550 driver.
  • Property mode set to 100644
File size: 7.1 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 = "i460GX";
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 if (ns16550_instance) {
177 srln_instance_t *srln_instance = srln_init();
178 if (srln_instance) {
179 indev_t *sink = stdin_wire();
180 indev_t *srln = srln_wire(srln_instance, sink);
181 ns16550_wire(ns16550_instance, srln);
182 }
183 }
184
185 sysinfo_set_item_val("kbd", NULL, true);
186 sysinfo_set_item_val("kbd.inr", NULL, NS16550_IRQ);
187 sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
188 sysinfo_set_item_val("kbd.address.physical", NULL,
189 (uintptr_t) NS16550_BASE);
190#endif
191
192#ifdef CONFIG_I8042
193 i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE,
194 IRQ_KBD);
195 if (i8042_instance) {
196 kbrd_instance_t *kbrd_instance = kbrd_init();
197 if (kbrd_instance) {
198 indev_t *sink = stdin_wire();
199 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
200 i8042_wire(i8042_instance, kbrd);
201 }
202 }
203#endif
204
205 sysinfo_set_item_val("ia64_iospace", NULL, true);
206 sysinfo_set_item_val("ia64_iospace.address", NULL, true);
207 sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, LEGACYIO_USER_BASE);
208}
209
210
211/** Enter userspace and never return. */
212void userspace(uspace_arg_t *kernel_uarg)
213{
214 psr_t psr;
215 rsc_t rsc;
216
217 psr.value = psr_read();
218 psr.cpl = PL_USER;
219 psr.i = true; /* start with interrupts enabled */
220 psr.ic = true;
221 psr.ri = 0; /* start with instruction #0 */
222 psr.bn = 1; /* start in bank 0 */
223
224 asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
225 rsc.loadrs = 0;
226 rsc.be = false;
227 rsc.pl = PL_USER;
228 rsc.mode = 3; /* eager mode */
229
230 /*
231 * Switch to userspace.
232 *
233 * When calculating stack addresses, mind the stack split between the
234 * memory stack and the RSE stack. Each occuppies STACK_SIZE / 2 bytes.
235 */
236 switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
237 ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE / 2 -
238 ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
239 ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE / 2,
240 (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
241
242 while (1)
243 ;
244}
245
246/** Set thread-local-storage pointer.
247 *
248 * We use r13 (a.k.a. tp) for this purpose.
249 */
250sysarg_t sys_tls_set(uintptr_t addr)
251{
252 return EOK;
253}
254
255void arch_reboot(void)
256{
257 pio_write_8((ioport8_t *)0x64, 0xfe);
258 while (1);
259}
260
261/** Construct function pointer
262 *
263 * @param fptr function pointer structure
264 * @param addr function address
265 * @param caller calling function address
266 *
267 * @return address of the function pointer
268 *
269 */
270void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
271{
272 fptr->fnc = (sysarg_t) addr;
273 fptr->gp = ((sysarg_t *) caller)[1];
274
275 return (void *) fptr;
276}
277
278void irq_initialize_arch(irq_t *irq)
279{
280 (void) irq;
281}
282
283/** @}
284 */
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