source: mainline/kernel/arch/ia64/src/ia64.c@ 88dfee7

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 88dfee7 was 88dfee7, checked in by Martin Decky <martin@…>, 13 years ago

get rid of unnecessary legacy code
  • 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
56#ifdef MACHINE_ski
57#include <arch/drivers/ski.h>
58#endif
59
60/* NS16550 as a COM 1 */
61#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
62
63bootinfo_t *bootinfo;
64
65static uint64_t iosapic_base = 0xfec00000;
66uintptr_t legacyio_virt_base = 0;
67
68/** Performs ia64-specific initialization before main_bsp() is called. */
69void arch_pre_main(void)
70{
71 init.cnt = min3(bootinfo->taskmap.cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS);
72 size_t i;
73 for (i = 0; i < init.cnt; i++) {
74 init.tasks[i].addr =
75 ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
76 VRN_MASK;
77 init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
78 str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
79 bootinfo->taskmap.tasks[i].name);
80 }
81}
82
83void arch_pre_mm_init(void)
84{
85}
86
87static void iosapic_init(void)
88{
89 uintptr_t IOSAPIC = hw_map(iosapic_base, PAGE_SIZE);
90 int i;
91
92 int myid, myeid;
93
94 myid = ia64_get_cpu_id();
95 myeid = ia64_get_cpu_eid();
96
97 for (i = 0; i < 16; i++) {
98 if (i == 2)
99 continue; /* Disable Cascade interrupt */
100 ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
101 srlz_d();
102 ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
103 srlz_d();
104 ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
105 srlz_d();
106 ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
107 myeid << (48 - 32);
108 srlz_d();
109 }
110
111}
112
113void arch_post_mm_init(void)
114{
115 if (config.cpu_active == 1) {
116 /* Map the page with legacy I/O. */
117 legacyio_virt_base = hw_map(LEGACYIO_PHYS_BASE, LEGACYIO_SIZE);
118
119 iosapic_init();
120 irq_init(INR_COUNT, INR_COUNT);
121 }
122 it_init();
123}
124
125void arch_post_cpu_init(void){
126}
127
128void arch_pre_smp_init(void)
129{
130}
131
132void arch_post_smp_init(void)
133{
134 static const char *platform;
135
136 /* Set platform name. */
137#ifdef MACHINE_ski
138 platform = "ski";
139#endif
140#ifdef MACHINE_i460GX
141 platform = "i460GX";
142#endif
143 sysinfo_set_item_data("platform", NULL, (void *) platform,
144 str_size(platform));
145
146#ifdef MACHINE_ski
147 ski_instance_t *ski_instance = skiin_init();
148 if (ski_instance) {
149 srln_instance_t *srln_instance = srln_init();
150 if (srln_instance) {
151 indev_t *sink = stdin_wire();
152 indev_t *srln = srln_wire(srln_instance, sink);
153 skiin_wire(ski_instance, srln);
154 }
155 }
156
157 outdev_t *skidev = skiout_init();
158 if (skidev)
159 stdout_wire(skidev);
160#endif
161
162#ifdef CONFIG_EGA
163 outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
164 if (egadev)
165 stdout_wire(egadev);
166#endif
167
168#ifdef CONFIG_NS16550
169 ns16550_instance_t *ns16550_instance
170 = ns16550_init((ns16550_t *) NS16550_BASE, NS16550_IRQ, NULL, NULL);
171 if (ns16550_instance) {
172 srln_instance_t *srln_instance = srln_init();
173 if (srln_instance) {
174 indev_t *sink = stdin_wire();
175 indev_t *srln = srln_wire(srln_instance, sink);
176 ns16550_wire(ns16550_instance, srln);
177 }
178 }
179
180 sysinfo_set_item_val("kbd", NULL, true);
181 sysinfo_set_item_val("kbd.inr", NULL, NS16550_IRQ);
182 sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
183 sysinfo_set_item_val("kbd.address.physical", NULL,
184 (uintptr_t) NS16550_BASE);
185 sysinfo_set_item_val("kbd.address.kernel", NULL,
186 (uintptr_t) NS16550_BASE);
187#endif
188
189#ifdef CONFIG_I8042
190 i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE,
191 IRQ_KBD);
192 if (i8042_instance) {
193 kbrd_instance_t *kbrd_instance = kbrd_init();
194 if (kbrd_instance) {
195 indev_t *sink = stdin_wire();
196 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
197 i8042_wire(i8042_instance, kbrd);
198 }
199 }
200#endif
201
202 sysinfo_set_item_val("ia64_iospace", NULL, true);
203 sysinfo_set_item_val("ia64_iospace.address", NULL, true);
204 sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, LEGACYIO_USER_BASE);
205}
206
207
208/** Enter userspace and never return. */
209void userspace(uspace_arg_t *kernel_uarg)
210{
211 psr_t psr;
212 rsc_t rsc;
213
214 psr.value = psr_read();
215 psr.cpl = PL_USER;
216 psr.i = true; /* start with interrupts enabled */
217 psr.ic = true;
218 psr.ri = 0; /* start with instruction #0 */
219 psr.bn = 1; /* start in bank 0 */
220
221 asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
222 rsc.loadrs = 0;
223 rsc.be = false;
224 rsc.pl = PL_USER;
225 rsc.mode = 3; /* eager mode */
226
227 /*
228 * Switch to userspace.
229 *
230 * When calculating stack addresses, mind the stack split between the
231 * memory stack and the RSE stack. Each occuppies STACK_SIZE / 2 bytes.
232 */
233 switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
234 ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE / 2 -
235 ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
236 ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE / 2,
237 (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
238
239 while (1)
240 ;
241}
242
243/** Set thread-local-storage pointer.
244 *
245 * We use r13 (a.k.a. tp) for this purpose.
246 */
247sysarg_t sys_tls_set(uintptr_t addr)
248{
249 return EOK;
250}
251
252void arch_reboot(void)
253{
254 pio_write_8((ioport8_t *)0x64, 0xfe);
255 while (1);
256}
257
258/** Construct function pointer
259 *
260 * @param fptr function pointer structure
261 * @param addr function address
262 * @param caller calling function address
263 *
264 * @return address of the function pointer
265 *
266 */
267void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
268{
269 fptr->fnc = (sysarg_t) addr;
270 fptr->gp = ((sysarg_t *) caller)[1];
271
272 return (void *) fptr;
273}
274
275void irq_initialize_arch(irq_t *irq)
276{
277 (void) irq;
278}
279
280/** @}
281 */
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