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15#include <linux/kernel.h>
16#include <linux/initrd.h>
17#include <linux/init.h>
18#include <linux/console.h>
19#include <linux/seq_file.h>
20#define PCI_DEBUG
21#include <linux/pci.h>
22#undef PCI_DEBUG
23#include <linux/proc_fs.h>
24#include <linux/export.h>
25#include <linux/sched.h>
26#include <linux/sched/clock.h>
27#include <linux/start_kernel.h>
28
29#include <asm/cacheflush.h>
30#include <asm/processor.h>
31#include <asm/sections.h>
32#include <asm/pdc.h>
33#include <asm/led.h>
34#include <asm/machdep.h>
35#include <asm/pdc_chassis.h>
36#include <asm/io.h>
37#include <asm/setup.h>
38#include <asm/unwind.h>
39#include <asm/smp.h>
40
41static char __initdata command_line[COMMAND_LINE_SIZE];
42
43
44struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
45struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
46struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
47
48void __init setup_cmdline(char **cmdline_p)
49{
50 extern unsigned int boot_args[];
51
52
53
54
55 if (boot_args[0] < 64) {
56
57 boot_command_line[0] = '\0';
58 } else {
59 strlcpy(boot_command_line, (char *)__va(boot_args[1]),
60 COMMAND_LINE_SIZE);
61
62#ifdef CONFIG_BLK_DEV_INITRD
63 if (boot_args[2] != 0)
64 {
65 initrd_start = (unsigned long)__va(boot_args[2]);
66 initrd_end = (unsigned long)__va(boot_args[3]);
67 }
68#endif
69 }
70
71 strcpy(command_line, boot_command_line);
72 *cmdline_p = command_line;
73}
74
75#ifdef CONFIG_PA11
76void __init dma_ops_init(void)
77{
78 switch (boot_cpu_data.cpu_type) {
79 case pcx:
80
81
82
83
84 panic( "PA-RISC Linux currently only supports machines that conform to\n"
85 "the PA-RISC 1.1 or 2.0 architecture specification.\n");
86
87 case pcxl2:
88 pa7300lc_init();
89 break;
90 default:
91 break;
92 }
93}
94#endif
95
96extern void collect_boot_cpu_data(void);
97
98void __init setup_arch(char **cmdline_p)
99{
100#ifdef CONFIG_64BIT
101 extern int parisc_narrow_firmware;
102#endif
103 unwind_init();
104
105 init_per_cpu(smp_processor_id());
106
107#ifdef CONFIG_64BIT
108 printk(KERN_INFO "The 64-bit Kernel has started...\n");
109#else
110 printk(KERN_INFO "The 32-bit Kernel has started...\n");
111#endif
112
113 printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ",
114 (int)(PAGE_SIZE / 1024));
115#ifdef CONFIG_HUGETLB_PAGE
116 printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size",
117 1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20));
118#else
119 printk(KERN_CONT "disabled");
120#endif
121 printk(KERN_CONT ".\n");
122
123
124
125
126
127
128 if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
129 panic("KERNEL_INITIAL_ORDER too small!");
130
131 pdc_console_init();
132
133#ifdef CONFIG_64BIT
134 if(parisc_narrow_firmware) {
135 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
136 }
137#endif
138 setup_pdc();
139 setup_cmdline(cmdline_p);
140 collect_boot_cpu_data();
141 do_memory_inventory();
142 parisc_cache_init();
143 paging_init();
144
145#ifdef CONFIG_CHASSIS_LCD_LED
146
147 led_init();
148#endif
149
150#ifdef CONFIG_PA11
151 dma_ops_init();
152#endif
153}
154
155
156
157
158
159extern int show_cpuinfo (struct seq_file *m, void *v);
160
161static void *
162c_start (struct seq_file *m, loff_t *pos)
163{
164
165
166
167
168
169 return ((long)*pos < 1) ? (void *)1 : NULL;
170}
171
172static void *
173c_next (struct seq_file *m, void *v, loff_t *pos)
174{
175 ++*pos;
176 return c_start(m, pos);
177}
178
179static void
180c_stop (struct seq_file *m, void *v)
181{
182}
183
184const struct seq_operations cpuinfo_op = {
185 .start = c_start,
186 .next = c_next,
187 .stop = c_stop,
188 .show = show_cpuinfo
189};
190
191static void __init parisc_proc_mkdir(void)
192{
193
194
195
196
197
198
199 switch (boot_cpu_data.cpu_type) {
200 case pcxl:
201 case pcxl2:
202 if (NULL == proc_gsc_root)
203 {
204 proc_gsc_root = proc_mkdir("bus/gsc", NULL);
205 }
206 break;
207 case pcxt_:
208 case pcxu:
209 case pcxu_:
210 case pcxw:
211 case pcxw_:
212 case pcxw2:
213 if (NULL == proc_runway_root)
214 {
215 proc_runway_root = proc_mkdir("bus/runway", NULL);
216 }
217 break;
218 case mako:
219 case mako2:
220 if (NULL == proc_mckinley_root)
221 {
222 proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
223 }
224 break;
225 default:
226
227
228
229 break;
230 }
231}
232
233static struct resource central_bus = {
234 .name = "Central Bus",
235 .start = F_EXTEND(0xfff80000),
236 .end = F_EXTEND(0xfffaffff),
237 .flags = IORESOURCE_MEM,
238};
239
240static struct resource local_broadcast = {
241 .name = "Local Broadcast",
242 .start = F_EXTEND(0xfffb0000),
243 .end = F_EXTEND(0xfffdffff),
244 .flags = IORESOURCE_MEM,
245};
246
247static struct resource global_broadcast = {
248 .name = "Global Broadcast",
249 .start = F_EXTEND(0xfffe0000),
250 .end = F_EXTEND(0xffffffff),
251 .flags = IORESOURCE_MEM,
252};
253
254static int __init parisc_init_resources(void)
255{
256 int result;
257
258 result = request_resource(&iomem_resource, ¢ral_bus);
259 if (result < 0) {
260 printk(KERN_ERR
261 "%s: failed to claim %s address space!\n",
262 __FILE__, central_bus.name);
263 return result;
264 }
265
266 result = request_resource(&iomem_resource, &local_broadcast);
267 if (result < 0) {
268 printk(KERN_ERR
269 "%s: failed to claim %s address space!\n",
270 __FILE__, local_broadcast.name);
271 return result;
272 }
273
274 result = request_resource(&iomem_resource, &global_broadcast);
275 if (result < 0) {
276 printk(KERN_ERR
277 "%s: failed to claim %s address space!\n",
278 __FILE__, global_broadcast.name);
279 return result;
280 }
281
282 return 0;
283}
284
285extern void gsc_init(void);
286extern void processor_init(void);
287extern void ccio_init(void);
288extern void hppb_init(void);
289extern void dino_init(void);
290extern void iosapic_init(void);
291extern void lba_init(void);
292extern void sba_init(void);
293extern void eisa_init(void);
294
295static int __init parisc_init(void)
296{
297 u32 osid = (OS_ID_LINUX << 16);
298
299 parisc_proc_mkdir();
300 parisc_init_resources();
301 do_device_inventory();
302
303 parisc_pdc_chassis_init();
304
305
306 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
307
308
309 pdc_stable_write(0x40, &osid, sizeof(osid));
310
311
312 flush_cache_all_local();
313 flush_tlb_all_local(NULL);
314
315 processor_init();
316#ifdef CONFIG_SMP
317 pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n",
318 num_online_cpus(), num_present_cpus(),
319#else
320 pr_info("CPU(s): 1 x %s at %d.%06d MHz\n",
321#endif
322 boot_cpu_data.cpu_name,
323 boot_cpu_data.cpu_hz / 1000000,
324 boot_cpu_data.cpu_hz % 1000000 );
325
326#if defined(CONFIG_64BIT) && defined(CONFIG_SMP)
327
328 if (num_online_cpus() == 1)
329 pa_serialize_tlb_flushes = 0;
330#endif
331
332 apply_alternatives_all();
333 parisc_setup_cache_timing();
334
335
336#if defined(CONFIG_IOSAPIC)
337 iosapic_init();
338#endif
339#if defined(CONFIG_IOMMU_SBA)
340 sba_init();
341#endif
342#if defined(CONFIG_PCI_LBA)
343 lba_init();
344#endif
345
346
347#if defined(CONFIG_IOMMU_CCIO)
348 ccio_init();
349#endif
350
351
352
353
354
355
356#if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
357 gsc_init();
358#endif
359#ifdef CONFIG_EISA
360 eisa_init();
361#endif
362
363#if defined(CONFIG_HPPB)
364 hppb_init();
365#endif
366
367#if defined(CONFIG_GSC_DINO)
368 dino_init();
369#endif
370
371#ifdef CONFIG_CHASSIS_LCD_LED
372 register_led_regions();
373#endif
374
375 return 0;
376}
377arch_initcall(parisc_init);
378
379void __init start_parisc(void)
380{
381 extern void early_trap_init(void);
382
383 int ret, cpunum;
384 struct pdc_coproc_cfg coproc_cfg;
385
386
387 running_on_qemu = (memcmp(&PAGE0->pad0, "SeaBIOS", 8) == 0);
388
389 cpunum = smp_processor_id();
390
391 init_cpu_topology();
392
393 set_firmware_width_unlocked();
394
395 ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
396 if (ret >= 0 && coproc_cfg.ccr_functional) {
397 mtctl(coproc_cfg.ccr_functional, 10);
398
399 per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
400 per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
401
402 asm volatile ("fstd %fr0,8(%sp)");
403 } else {
404 panic("must have an fpu to boot linux");
405 }
406
407 early_trap_init();
408
409 start_kernel();
410
411}
412