source: mainline/kernel/arch/ppc32/src/ppc32.c@ 1332270

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 1332270 was 88e43bc, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 7 years ago

Mark unreachable consistently in kernel

At least in places that were commented as such.
  • Property mode set to 100644
File size: 8.2 KB
Line 
1/*
2 * Copyright (c) 2005 Martin Decky
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 kernel_ppc32
30 * @{
31 */
32/** @file
33 */
34
35#include <arch.h>
36#include <arch/arch.h>
37#include <config.h>
38#include <arch/boot/boot.h>
39#include <genarch/drivers/via-cuda/cuda.h>
40#include <genarch/kbrd/kbrd.h>
41#include <arch/interrupt.h>
42#include <interrupt.h>
43#include <genarch/fb/fb.h>
44#include <abi/fb/visuals.h>
45#include <genarch/ofw/ofw_tree.h>
46#include <genarch/ofw/pci.h>
47#include <userspace.h>
48#include <mm/page.h>
49#include <mm/km.h>
50#include <time/clock.h>
51#include <abi/proc/uarg.h>
52#include <console/console.h>
53#include <sysinfo/sysinfo.h>
54#include <ddi/irq.h>
55#include <arch/drivers/pic.h>
56#include <align.h>
57#include <macros.h>
58#include <str.h>
59
60#define IRQ_COUNT 64
61#define IRQ_CUDA 10
62
63static void ppc32_pre_mm_init(void);
64static void ppc32_post_mm_init(void);
65static void ppc32_post_smp_init(void);
66
67arch_ops_t ppc32_ops = {
68 .pre_mm_init = ppc32_pre_mm_init,
69 .post_mm_init = ppc32_post_mm_init,
70 .post_smp_init = ppc32_post_smp_init,
71};
72
73arch_ops_t *arch_ops = &ppc32_ops;
74
75bootinfo_t bootinfo;
76
77static cir_t pic_cir;
78static void *pic_cir_arg;
79
80/** Performs ppc32-specific initialization before main_bsp() is called. */
81void ppc32_pre_main(bootinfo_t *bootinfo)
82{
83 /* Copy tasks map. */
84 init.cnt = min3(bootinfo->taskmap.cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS);
85 size_t i;
86 for (i = 0; i < init.cnt; i++) {
87 init.tasks[i].paddr = KA2PA(bootinfo->taskmap.tasks[i].addr);
88 init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
89 str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
90 bootinfo->taskmap.tasks[i].name);
91 }
92
93 /* Copy physical memory map. */
94 memmap.total = bootinfo->memmap.total;
95 memmap.cnt = min(bootinfo->memmap.cnt, MEMMAP_MAX_RECORDS);
96 for (i = 0; i < memmap.cnt; i++) {
97 memmap.zones[i].start = bootinfo->memmap.zones[i].start;
98 memmap.zones[i].size = bootinfo->memmap.zones[i].size;
99 }
100
101 /* Copy boot allocations info. */
102 ballocs.base = bootinfo->ballocs.base;
103 ballocs.size = bootinfo->ballocs.size;
104
105 /* Copy OFW tree. */
106 ofw_tree_init(bootinfo->ofw_root);
107}
108
109void ppc32_pre_mm_init(void)
110{
111 /* Initialize dispatch table */
112 interrupt_init();
113
114 ofw_tree_node_t *cpus_node;
115 ofw_tree_node_t *cpu_node;
116 ofw_tree_property_t *freq_prop;
117
118 cpus_node = ofw_tree_lookup("/cpus");
119 if (!cpus_node)
120 panic("Could not find cpus node.");
121
122 cpu_node = cpus_node->child;
123 if (!cpu_node)
124 panic("Could not find first cpu.");
125
126 freq_prop = ofw_tree_getprop(cpu_node, "timebase-frequency");
127 if (!freq_prop)
128 panic("Could not get frequency property.");
129
130 uint32_t freq;
131 freq = *((uint32_t *) freq_prop->value);
132
133 /* Start decrementer */
134 decrementer_start(freq / HZ);
135}
136
137#ifdef CONFIG_FB
138static bool display_register(ofw_tree_node_t *node, void *arg)
139{
140 uintptr_t fb_addr = 0;
141 uint32_t fb_width = 0;
142 uint32_t fb_height = 0;
143 uint32_t fb_scanline = 0;
144 unsigned int visual = VISUAL_UNKNOWN;
145
146 ofw_tree_property_t *prop = ofw_tree_getprop(node, "address");
147 if ((prop) && (prop->value))
148 fb_addr = *((uintptr_t *) prop->value);
149
150 prop = ofw_tree_getprop(node, "width");
151 if ((prop) && (prop->value))
152 fb_width = *((uint32_t *) prop->value);
153
154 prop = ofw_tree_getprop(node, "height");
155 if ((prop) && (prop->value))
156 fb_height = *((uint32_t *) prop->value);
157
158 prop = ofw_tree_getprop(node, "depth");
159 if ((prop) && (prop->value)) {
160 uint32_t fb_bpp = *((uint32_t *) prop->value);
161 switch (fb_bpp) {
162 case 8:
163 visual = VISUAL_INDIRECT_8;
164 break;
165 case 15:
166 visual = VISUAL_RGB_5_5_5_BE;
167 break;
168 case 16:
169 visual = VISUAL_RGB_5_6_5_BE;
170 break;
171 case 24:
172 visual = VISUAL_BGR_8_8_8;
173 break;
174 case 32:
175 visual = VISUAL_RGB_0_8_8_8;
176 break;
177 default:
178 visual = VISUAL_UNKNOWN;
179 }
180 }
181
182 prop = ofw_tree_getprop(node, "linebytes");
183 if ((prop) && (prop->value))
184 fb_scanline = *((uint32_t *) prop->value);
185
186 if ((fb_addr) && (fb_width > 0) && (fb_height > 0) &&
187 (fb_scanline > 0) && (visual != VISUAL_UNKNOWN)) {
188 fb_properties_t fb_prop = {
189 .addr = fb_addr,
190 .offset = 0,
191 .x = fb_width,
192 .y = fb_height,
193 .scan = fb_scanline,
194 .visual = visual,
195 };
196
197 outdev_t *fbdev = fb_init(&fb_prop);
198 if (fbdev)
199 stdout_wire(fbdev);
200 }
201
202 return true;
203}
204#endif
205
206void ppc32_post_mm_init(void)
207{
208 if (config.cpu_active == 1) {
209#ifdef CONFIG_FB
210 ofw_tree_walk_by_device_type("display", display_register, NULL);
211#endif
212 /* Map OFW information into sysinfo */
213 ofw_sysinfo_map();
214
215 /* Initialize IRQ routing */
216 irq_init(IRQ_COUNT, IRQ_COUNT);
217
218 /* Merge all zones to 1 big zone */
219 zone_merge_all();
220 }
221}
222
223static bool macio_register(ofw_tree_node_t *node, void *arg)
224{
225 ofw_pci_reg_t *assigned_address = NULL;
226
227 ofw_tree_property_t *prop = ofw_tree_getprop(node, "assigned-addresses");
228 if ((prop) && (prop->value))
229 assigned_address = ((ofw_pci_reg_t *) prop->value);
230
231 if (assigned_address) {
232 /* Initialize PIC */
233 pic_init(assigned_address[0].addr, PAGE_SIZE, &pic_cir,
234 &pic_cir_arg);
235
236#ifdef CONFIG_MAC_KBD
237 uintptr_t pa = assigned_address[0].addr + 0x16000;
238 size_t size = 2 * PAGE_SIZE;
239
240 cuda_t *cuda = (cuda_t *) km_map(pa, size, KM_NATURAL_ALIGNMENT,
241 PAGE_WRITE | PAGE_NOT_CACHEABLE);
242
243 /* Initialize I/O controller */
244 cuda_instance_t *cuda_instance =
245 cuda_init(cuda, IRQ_CUDA, pic_cir, pic_cir_arg);
246 if (cuda_instance) {
247 kbrd_instance_t *kbrd_instance = kbrd_init();
248 if (kbrd_instance) {
249 indev_t *sink = stdin_wire();
250 indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
251 cuda_wire(cuda_instance, kbrd);
252 pic_enable_interrupt(IRQ_CUDA);
253 }
254 }
255
256 /*
257 * This is the necessary evil until the userspace driver is entirely
258 * self-sufficient.
259 */
260 sysinfo_set_item_val("cuda", NULL, true);
261 sysinfo_set_item_val("cuda.inr", NULL, IRQ_CUDA);
262 sysinfo_set_item_val("cuda.address.physical", NULL, pa);
263#endif
264 }
265
266 /* Consider only a single device for now */
267 return false;
268}
269
270void irq_initialize_arch(irq_t *irq)
271{
272 irq->cir = pic_cir;
273 irq->cir_arg = pic_cir_arg;
274 irq->preack = true;
275}
276
277void ppc32_post_smp_init(void)
278{
279 /* Currently the only supported platform for ppc32 is 'mac'. */
280 static const char *platform = "mac";
281
282 sysinfo_set_item_data("platform", NULL, (void *) platform,
283 str_size(platform));
284
285 ofw_tree_walk_by_device_type("mac-io", macio_register, NULL);
286}
287
288void calibrate_delay_loop(void)
289{
290}
291
292void userspace(uspace_arg_t *kernel_uarg)
293{
294 userspace_asm((uintptr_t) kernel_uarg->uspace_uarg,
295 (uintptr_t) kernel_uarg->uspace_stack +
296 kernel_uarg->uspace_stack_size - SP_DELTA,
297 (uintptr_t) kernel_uarg->uspace_entry);
298
299 unreachable();
300}
301
302/** Construct function pointer
303 *
304 * @param fptr function pointer structure
305 * @param addr function address
306 * @param caller calling function address
307 *
308 * @return address of the function pointer
309 *
310 */
311void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
312{
313 return addr;
314}
315
316void arch_reboot(void)
317{
318 // TODO
319 while (true)
320 ;
321}
322
323/** @}
324 */
Note: See TracBrowser for help on using the repository browser.