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8#include <linux/errno.h>
9#include <linux/sched.h>
10#include <linux/kernel.h>
11#include <linux/mm.h>
12#include <linux/stddef.h>
13#include <linux/unistd.h>
14#include <linux/ptrace.h>
15#include <linux/slab.h>
16#include <asm/smp.h>
17#include <linux/user.h>
18#include <linux/screen_info.h>
19#include <linux/delay.h>
20#include <linux/fs.h>
21#include <linux/seq_file.h>
22#include <linux/syscalls.h>
23#include <linux/kdev_t.h>
24#include <linux/major.h>
25#include <linux/string.h>
26#include <linux/init.h>
27#include <linux/inet.h>
28#include <linux/console.h>
29#include <linux/root_dev.h>
30#include <linux/interrupt.h>
31#include <linux/cpu.h>
32#include <linux/initrd.h>
33
34#include <asm/system.h>
35#include <asm/io.h>
36#include <asm/processor.h>
37#include <asm/oplib.h>
38#include <asm/page.h>
39#include <asm/pgtable.h>
40#include <asm/idprom.h>
41#include <asm/head.h>
42#include <asm/starfire.h>
43#include <asm/mmu_context.h>
44#include <asm/timer.h>
45#include <asm/sections.h>
46#include <asm/setup.h>
47#include <asm/mmu.h>
48#include <asm/ns87303.h>
49
50#ifdef CONFIG_IP_PNP
51#include <net/ipconfig.h>
52#endif
53
54#include "entry.h"
55#include "kernel.h"
56
57
58
59
60DEFINE_SPINLOCK(ns87303_lock);
61EXPORT_SYMBOL(ns87303_lock);
62
63struct screen_info screen_info = {
64 0, 0,
65 0,
66 0,
67 0,
68 128,
69 0, 0, 0,
70 54,
71 0,
72 16
73};
74
75static void
76prom_console_write(struct console *con, const char *s, unsigned n)
77{
78 prom_write(s, n);
79}
80
81
82unsigned long cmdline_memory_size = 0;
83
84static struct console prom_early_console = {
85 .name = "earlyprom",
86 .write = prom_console_write,
87 .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
88 .index = -1,
89};
90
91
92
93
94
95static void __init process_switch(char c)
96{
97 switch (c) {
98 case 'd':
99 case 's':
100 break;
101 case 'h':
102 prom_printf("boot_flags_init: Halt!\n");
103 prom_halt();
104 break;
105 case 'p':
106
107 break;
108 case 'P':
109
110 if (tlb_type != cheetah) {
111 printk("BOOT: Ignoring P-Cache force option.\n");
112 break;
113 }
114 cheetah_pcache_forced_on = 1;
115 add_taint(TAINT_MACHINE_CHECK);
116 cheetah_enable_pcache();
117 break;
118
119 default:
120 printk("Unknown boot switch (-%c)\n", c);
121 break;
122 }
123}
124
125static void __init boot_flags_init(char *commands)
126{
127 while (*commands) {
128
129 while (*commands && *commands == ' ')
130 commands++;
131
132
133 if (*commands == '\0')
134 break;
135 if (*commands == '-') {
136 commands++;
137 while (*commands && *commands != ' ')
138 process_switch(*commands++);
139 continue;
140 }
141 if (!strncmp(commands, "mem=", 4)) {
142
143
144
145
146 cmdline_memory_size = simple_strtoul(commands + 4,
147 &commands, 0);
148 if (*commands == 'K' || *commands == 'k') {
149 cmdline_memory_size <<= 10;
150 commands++;
151 } else if (*commands=='M' || *commands=='m') {
152 cmdline_memory_size <<= 20;
153 commands++;
154 }
155 }
156 while (*commands && *commands != ' ')
157 commands++;
158 }
159}
160
161extern unsigned short root_flags;
162extern unsigned short root_dev;
163extern unsigned short ram_flags;
164#define RAMDISK_IMAGE_START_MASK 0x07FF
165#define RAMDISK_PROMPT_FLAG 0x8000
166#define RAMDISK_LOAD_FLAG 0x4000
167
168extern int root_mountflags;
169
170char reboot_command[COMMAND_LINE_SIZE];
171
172static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
173
174void __init per_cpu_patch(void)
175{
176 struct cpuid_patch_entry *p;
177 unsigned long ver;
178 int is_jbus;
179
180 if (tlb_type == spitfire && !this_is_starfire)
181 return;
182
183 is_jbus = 0;
184 if (tlb_type != hypervisor) {
185 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
186 is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
187 (ver >> 32UL) == __SERRANO_ID);
188 }
189
190 p = &__cpuid_patch;
191 while (p < &__cpuid_patch_end) {
192 unsigned long addr = p->addr;
193 unsigned int *insns;
194
195 switch (tlb_type) {
196 case spitfire:
197 insns = &p->starfire[0];
198 break;
199 case cheetah:
200 case cheetah_plus:
201 if (is_jbus)
202 insns = &p->cheetah_jbus[0];
203 else
204 insns = &p->cheetah_safari[0];
205 break;
206 case hypervisor:
207 insns = &p->sun4v[0];
208 break;
209 default:
210 prom_printf("Unknown cpu type, halting.\n");
211 prom_halt();
212 };
213
214 *(unsigned int *) (addr + 0) = insns[0];
215 wmb();
216 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
217
218 *(unsigned int *) (addr + 4) = insns[1];
219 wmb();
220 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
221
222 *(unsigned int *) (addr + 8) = insns[2];
223 wmb();
224 __asm__ __volatile__("flush %0" : : "r" (addr + 8));
225
226 *(unsigned int *) (addr + 12) = insns[3];
227 wmb();
228 __asm__ __volatile__("flush %0" : : "r" (addr + 12));
229
230 p++;
231 }
232}
233
234void __init sun4v_patch(void)
235{
236 extern void sun4v_hvapi_init(void);
237 struct sun4v_1insn_patch_entry *p1;
238 struct sun4v_2insn_patch_entry *p2;
239
240 if (tlb_type != hypervisor)
241 return;
242
243 p1 = &__sun4v_1insn_patch;
244 while (p1 < &__sun4v_1insn_patch_end) {
245 unsigned long addr = p1->addr;
246
247 *(unsigned int *) (addr + 0) = p1->insn;
248 wmb();
249 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
250
251 p1++;
252 }
253
254 p2 = &__sun4v_2insn_patch;
255 while (p2 < &__sun4v_2insn_patch_end) {
256 unsigned long addr = p2->addr;
257
258 *(unsigned int *) (addr + 0) = p2->insns[0];
259 wmb();
260 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
261
262 *(unsigned int *) (addr + 4) = p2->insns[1];
263 wmb();
264 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
265
266 p2++;
267 }
268
269 sun4v_hvapi_init();
270}
271
272#ifdef CONFIG_SMP
273void __init boot_cpu_id_too_large(int cpu)
274{
275 prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
276 cpu, NR_CPUS);
277 prom_halt();
278}
279#endif
280
281void __init setup_arch(char **cmdline_p)
282{
283
284 *cmdline_p = prom_getbootargs();
285 strcpy(boot_command_line, *cmdline_p);
286 parse_early_param();
287
288 boot_flags_init(*cmdline_p);
289 register_console(&prom_early_console);
290
291 if (tlb_type == hypervisor)
292 printk("ARCH: SUN4V\n");
293 else
294 printk("ARCH: SUN4U\n");
295
296#ifdef CONFIG_DUMMY_CONSOLE
297 conswitchp = &dummy_con;
298#endif
299
300 idprom_init();
301
302 if (!root_flags)
303 root_mountflags &= ~MS_RDONLY;
304 ROOT_DEV = old_decode_dev(root_dev);
305#ifdef CONFIG_BLK_DEV_RAM
306 rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
307 rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
308 rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
309#endif
310
311 task_thread_info(&init_task)->kregs = &fake_swapper_regs;
312
313#ifdef CONFIG_IP_PNP
314 if (!ic_set_manually) {
315 int chosen = prom_finddevice ("/chosen");
316 u32 cl, sv, gw;
317
318 cl = prom_getintdefault (chosen, "client-ip", 0);
319 sv = prom_getintdefault (chosen, "server-ip", 0);
320 gw = prom_getintdefault (chosen, "gateway-ip", 0);
321 if (cl && sv) {
322 ic_myaddr = cl;
323 ic_servaddr = sv;
324 if (gw)
325 ic_gateway = gw;
326#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
327 ic_proto_enabled = 0;
328#endif
329 }
330 }
331#endif
332
333
334 init_cur_cpu_trap(current_thread_info());
335
336 paging_init();
337}
338
339
340
341extern void smp_info(struct seq_file *);
342extern void smp_bogo(struct seq_file *);
343extern void mmu_info(struct seq_file *);
344
345unsigned int dcache_parity_tl1_occurred;
346unsigned int icache_parity_tl1_occurred;
347
348int ncpus_probed;
349
350static int show_cpuinfo(struct seq_file *m, void *__unused)
351{
352 seq_printf(m,
353 "cpu\t\t: %s\n"
354 "fpu\t\t: %s\n"
355 "pmu\t\t: %s\n"
356 "prom\t\t: %s\n"
357 "type\t\t: %s\n"
358 "ncpus probed\t: %d\n"
359 "ncpus active\t: %d\n"
360 "D$ parity tl1\t: %u\n"
361 "I$ parity tl1\t: %u\n"
362#ifndef CONFIG_SMP
363 "Cpu0ClkTck\t: %016lx\n"
364#endif
365 ,
366 sparc_cpu_type,
367 sparc_fpu_type,
368 sparc_pmu_type,
369 prom_version,
370 ((tlb_type == hypervisor) ?
371 "sun4v" :
372 "sun4u"),
373 ncpus_probed,
374 num_online_cpus(),
375 dcache_parity_tl1_occurred,
376 icache_parity_tl1_occurred
377#ifndef CONFIG_SMP
378 , cpu_data(0).clock_tick
379#endif
380 );
381#ifdef CONFIG_SMP
382 smp_bogo(m);
383#endif
384 mmu_info(m);
385#ifdef CONFIG_SMP
386 smp_info(m);
387#endif
388 return 0;
389}
390
391static void *c_start(struct seq_file *m, loff_t *pos)
392{
393
394
395
396
397 return *pos == 0 ? &c_start : NULL;
398}
399
400static void *c_next(struct seq_file *m, void *v, loff_t *pos)
401{
402 ++*pos;
403 return c_start(m, pos);
404}
405
406static void c_stop(struct seq_file *m, void *v)
407{
408}
409
410const struct seq_operations cpuinfo_op = {
411 .start =c_start,
412 .next = c_next,
413 .stop = c_stop,
414 .show = show_cpuinfo,
415};
416
417extern int stop_a_enabled;
418
419void sun_do_break(void)
420{
421 if (!stop_a_enabled)
422 return;
423
424 prom_printf("\n");
425 flush_user_windows();
426
427 prom_cmdline();
428}
429EXPORT_SYMBOL(sun_do_break);
430
431int stop_a_enabled = 1;
432EXPORT_SYMBOL(stop_a_enabled);
433
