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Thomas Gleixnerde6cc652019-05-27 08:55:02 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Alexander Beregalov071327e2009-04-03 01:49:22 +00002/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 * Initial setup-routines for HP 9000 based hardware.
4 *
5 * Copyright (C) 1991, 1992, 1995 Linus Torvalds
Helge Delleref017be2008-12-31 03:12:10 +00006 * Modifications for PA-RISC (C) 1999-2008 Helge Deller <deller@gmx.de>
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
8 * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
9 * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
10 * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
11 *
12 * Initial PA-RISC Version: 04-23-1999 by Helge Deller
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/delay.h>
15#include <linux/init.h>
16#include <linux/mm.h>
17#include <linux/module.h>
18#include <linux/seq_file.h>
Helge Deller1ed47142017-08-10 19:20:47 +020019#include <linux/random.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <linux/slab.h>
21#include <linux/cpu.h>
Helge Deller62773112022-03-24 19:46:50 +010022#include <asm/topology.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040023#include <asm/param.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <asm/cache.h>
25#include <asm/hardware.h> /* for register_parisc_driver() stuff */
26#include <asm/processor.h>
27#include <asm/page.h>
28#include <asm/pdc.h>
29#include <asm/pdcpat.h>
30#include <asm/irq.h> /* for struct irq_region */
31#include <asm/parisc-device.h>
32
Helge Dellerd9888362019-05-10 20:55:08 +020033struct system_cpuinfo_parisc boot_cpu_data __ro_after_init;
Linus Torvalds1da177e2005-04-16 15:20:36 -070034EXPORT_SYMBOL(boot_cpu_data);
Helge Dellerfc632572015-12-12 18:22:03 +010035#ifdef CONFIG_PA8X00
Helge Dellerd9888362019-05-10 20:55:08 +020036int _parisc_requires_coherency __ro_after_init;
Helge Dellerfc632572015-12-12 18:22:03 +010037EXPORT_SYMBOL(_parisc_requires_coherency);
38#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Helge Delleref017be2008-12-31 03:12:10 +000040DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42/*
43** PARISC CPU driver - claim "device" and initialize CPU data structures.
44**
45** Consolidate per CPU initialization into (mostly) one module.
46** Monarch CPU will initialize boot_cpu_data which shouldn't
47** change once the system has booted.
48**
49** The callback *should* do per-instance initialization of
50** everything including the monarch. "Per CPU" init code in
51** setup.c:start_parisc() has migrated here and start_parisc()
52** will call register_parisc_driver(&cpu_driver) before calling do_inventory().
53**
54** The goal of consolidating CPU initialization into one place is
Simon Arlott70226722007-05-11 20:42:34 +010055** to make sure all CPUs get initialized the same way.
Linus Torvalds1da177e2005-04-16 15:20:36 -070056** The code path not shared is how PDC hands control of the CPU to the OS.
57** The initialization of OS data structures is the same (done below).
58*/
59
60/**
Helge Delleref017be2008-12-31 03:12:10 +000061 * init_cpu_profiler - enable/setup per cpu profiling hooks.
62 * @cpunum: The processor instance.
63 *
64 * FIXME: doesn't do much yet...
65 */
Paul Gortmaker60ffef02013-06-17 15:43:14 -040066static void
Helge Delleref017be2008-12-31 03:12:10 +000067init_percpu_prof(unsigned long cpunum)
68{
Helge Delleref017be2008-12-31 03:12:10 +000069}
70
71
72/**
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 * processor_probe - Determine if processor driver should claim this device.
74 * @dev: The device which has been found.
75 *
76 * Determine if processor driver should claim this chip (return 0) or not
77 * (return 1). If so, initialize the chip and tell other partners in crime
78 * they have work to do.
79 */
Helge Deller6c706b92017-08-21 22:09:30 +020080static int __init processor_probe(struct parisc_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070081{
82 unsigned long txn_addr;
83 unsigned long cpuid;
84 struct cpuinfo_parisc *p;
Helge Dellerc8c37352017-01-08 11:01:11 +010085 struct pdc_pat_cpu_num cpu_info = { };
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Kyle McMartinf8b9e592007-10-18 00:03:50 -070087#ifdef CONFIG_SMP
Rusty Russellbd071e12009-03-16 14:19:37 +103088 if (num_online_cpus() >= nr_cpu_ids) {
89 printk(KERN_INFO "num_online_cpus() >= nr_cpu_ids\n");
Kyle McMartinf8b9e592007-10-18 00:03:50 -070090 return 1;
91 }
92#else
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 if (boot_cpu_data.cpu_count > 0) {
94 printk(KERN_INFO "CONFIG_SMP=n ignoring additional CPUs\n");
95 return 1;
96 }
97#endif
98
99 /* logical CPU ID and update global counter
100 * May get overwritten by PAT code.
101 */
102 cpuid = boot_cpu_data.cpu_count;
Matthew Wilcox53f01bb2005-10-21 22:36:40 -0400103 txn_addr = dev->hpa.start; /* for legacy PDC */
Helge Dellerc8c37352017-01-08 11:01:11 +0100104 cpu_info.cpu_num = cpu_info.cpu_loc = cpuid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Helge Dellera8f44e32007-01-28 14:58:52 +0100106#ifdef CONFIG_64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 if (is_pdc_pat()) {
108 ulong status;
109 unsigned long bytecnt;
Kyle McMartin64a0cdb2009-06-23 13:10:03 -0400110 pdc_pat_cell_mod_maddr_block_t *pa_pdc_cell;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
Kyle McMartin64a0cdb2009-06-23 13:10:03 -0400112 pa_pdc_cell = kmalloc(sizeof (*pa_pdc_cell), GFP_KERNEL);
113 if (!pa_pdc_cell)
114 panic("couldn't allocate memory for PDC_PAT_CELL!");
115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 status = pdc_pat_cell_module(&bytecnt, dev->pcell_loc,
Kyle McMartin64a0cdb2009-06-23 13:10:03 -0400117 dev->mod_index, PA_VIEW, pa_pdc_cell);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
119 BUG_ON(PDC_OK != status);
120
121 /* verify it's the same as what do_pat_inventory() found */
Kyle McMartin64a0cdb2009-06-23 13:10:03 -0400122 BUG_ON(dev->mod_info != pa_pdc_cell->mod_info);
123 BUG_ON(dev->pmod_loc != pa_pdc_cell->mod_location);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
Kyle McMartin64a0cdb2009-06-23 13:10:03 -0400125 txn_addr = pa_pdc_cell->mod[0]; /* id_eid for IO sapic */
126
127 kfree(pa_pdc_cell);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Helge Deller637250c2016-11-17 21:27:50 +0100129 /* get the cpu number */
130 status = pdc_pat_cpu_get_number(&cpu_info, dev->hpa.start);
131 BUG_ON(PDC_OK != status);
132
133 pr_info("Logical CPU #%lu is physical cpu #%lu at location "
134 "0x%lx with hpa %pa\n",
135 cpuid, cpu_info.cpu_num, cpu_info.cpu_loc,
136 &dev->hpa.start);
137
138#undef USE_PAT_CPUID
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#ifdef USE_PAT_CPUID
140/* We need contiguous numbers for cpuid. Firmware's notion
141 * of cpuid is for physical CPUs and we just don't care yet.
142 * We'll care when we need to query PAT PDC about a CPU *after*
143 * boot time (ie shutdown a CPU from an OS perspective).
144 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 if (cpu_info.cpu_num >= NR_CPUS) {
Helge Deller637250c2016-11-17 21:27:50 +0100146 printk(KERN_WARNING "IGNORING CPU at %pa,"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 " cpu_slot_id > NR_CPUS"
148 " (%ld > %d)\n",
Helge Deller637250c2016-11-17 21:27:50 +0100149 &dev->hpa.start, cpu_info.cpu_num, NR_CPUS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 /* Ignore CPU since it will only crash */
151 boot_cpu_data.cpu_count--;
152 return 1;
153 } else {
154 cpuid = cpu_info.cpu_num;
155 }
156#endif
157 }
158#endif
159
Helge Delleref017be2008-12-31 03:12:10 +0000160 p = &per_cpu(cpu_data, cpuid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 boot_cpu_data.cpu_count++;
162
Grant Grundler7908a0c2006-09-01 14:18:39 -0700163 /* initialize counters - CPU 0 gets it_value set in time_init() */
164 if (cpuid)
165 memset(p, 0, sizeof(struct cpuinfo_parisc));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 p->dev = dev; /* Save IODC data in case we need it */
Matthew Wilcox53f01bb2005-10-21 22:36:40 -0400168 p->hpa = dev->hpa.start; /* save CPU hpa */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 p->cpuid = cpuid; /* save CPU id */
170 p->txn_addr = txn_addr; /* save CPU IRQ address */
Helge Dellerc8c37352017-01-08 11:01:11 +0100171 p->cpu_num = cpu_info.cpu_num;
172 p->cpu_loc = cpu_info.cpu_loc;
Helge Dellerbf7b4c12017-09-21 21:55:01 +0200173
Helge Deller09212442022-04-01 09:19:11 +0200174 set_cpu_possible(cpuid, true);
Helge Dellerbf7b4c12017-09-21 21:55:01 +0200175 store_cpu_topology(cpuid);
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177#ifdef CONFIG_SMP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 /*
179 ** FIXME: review if any other initialization is clobbered
Helge Delleref017be2008-12-31 03:12:10 +0000180 ** for boot_cpu by the above memset().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 */
Helge Delleref017be2008-12-31 03:12:10 +0000182 init_percpu_prof(cpuid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183#endif
184
185 /*
Simon Arlott70226722007-05-11 20:42:34 +0100186 ** CONFIG_SMP: init_smp_config() will attempt to get CPUs into
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 ** OS control. RENDEZVOUS is the default state - see mem_set above.
188 ** p->state = STATE_RENDEZVOUS;
189 */
190
191#if 0
192 /* CPU 0 IRQ table is statically allocated/initialized */
193 if (cpuid) {
194 struct irqaction actions[];
195
196 /*
197 ** itimer and ipi IRQ handlers are statically initialized in
198 ** arch/parisc/kernel/irq.c. ie Don't need to register them.
199 */
200 actions = kmalloc(sizeof(struct irqaction)*MAX_CPU_IRQ, GFP_ATOMIC);
201 if (!actions) {
202 /* not getting it's own table, share with monarch */
203 actions = cpu_irq_actions[0];
204 }
205
206 cpu_irq_actions[cpuid] = actions;
207 }
208#endif
209
210 /*
211 * Bring this CPU up now! (ignore bootstrap cpuid == 0)
212 */
213#ifdef CONFIG_SMP
214 if (cpuid) {
Rusty Russell9bc181d2009-03-16 14:19:38 +1030215 set_cpu_present(cpuid, true);
Qais Yousef02addae2020-03-23 13:51:05 +0000216 add_cpu(cpuid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 }
218#endif
219
220 return 0;
221}
222
223/**
224 * collect_boot_cpu_data - Fill the boot_cpu_data structure.
225 *
226 * This function collects and stores the generic processor information
227 * in the boot_cpu_data structure.
228 */
229void __init collect_boot_cpu_data(void)
230{
Helge Deller1ed47142017-08-10 19:20:47 +0200231 unsigned long cr16_seed;
Helge Deller8207d4e2019-02-08 18:28:13 +0100232 char orig_prod_num[64], current_prod_num[64], serial_no[64];
Helge Deller1ed47142017-08-10 19:20:47 +0200233
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));
235
Helge Deller1ed47142017-08-10 19:20:47 +0200236 cr16_seed = get_cycles();
237 add_device_randomness(&cr16_seed, sizeof(cr16_seed));
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec; /* Hz of this PARISC */
240
241 /* get CPU-Model Information... */
242#define p ((unsigned long *)&boot_cpu_data.pdc.model)
Helge Deller1ed47142017-08-10 19:20:47 +0200243 if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 printk(KERN_INFO
245 "model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
246 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]);
Helge Deller1ed47142017-08-10 19:20:47 +0200247
248 add_device_randomness(&boot_cpu_data.pdc.model,
249 sizeof(boot_cpu_data.pdc.model));
250 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251#undef p
252
Helge Deller1ed47142017-08-10 19:20:47 +0200253 if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 printk(KERN_INFO "vers %08lx\n",
255 boot_cpu_data.pdc.versions);
256
Helge Deller1ed47142017-08-10 19:20:47 +0200257 add_device_randomness(&boot_cpu_data.pdc.versions,
258 sizeof(boot_cpu_data.pdc.versions));
259 }
260
261 if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n",
263 (boot_cpu_data.pdc.cpuid >> 5) & 127,
264 boot_cpu_data.pdc.cpuid & 31,
265 boot_cpu_data.pdc.cpuid);
266
Helge Deller1ed47142017-08-10 19:20:47 +0200267 add_device_randomness(&boot_cpu_data.pdc.cpuid,
268 sizeof(boot_cpu_data.pdc.cpuid));
269 }
270
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK)
272 printk(KERN_INFO "capabilities 0x%lx\n",
273 boot_cpu_data.pdc.capabilities);
274
275 if (pdc_model_sysmodel(boot_cpu_data.pdc.sys_model_name) == PDC_OK)
276 printk(KERN_INFO "model %s\n",
277 boot_cpu_data.pdc.sys_model_name);
278
Helge Dellerdbf2a4b2018-08-21 08:15:42 +0200279 dump_stack_set_arch_desc("%s", boot_cpu_data.pdc.sys_model_name);
280
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 boot_cpu_data.hversion = boot_cpu_data.pdc.model.hversion;
282 boot_cpu_data.sversion = boot_cpu_data.pdc.model.sversion;
283
284 boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion);
285 boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0];
286 boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Helge Dellerfc632572015-12-12 18:22:03 +0100288#ifdef CONFIG_PA8X00
289 _parisc_requires_coherency = (boot_cpu_data.cpu_type == mako) ||
290 (boot_cpu_data.cpu_type == mako2);
291#endif
Helge Deller8207d4e2019-02-08 18:28:13 +0100292
293 if (pdc_model_platform_info(orig_prod_num, current_prod_num, serial_no) == PDC_OK) {
294 printk(KERN_INFO "product %s, original product %s, S/N: %s\n",
Helge Deller0e4db232019-04-09 22:22:29 +0200295 current_prod_num[0] ? current_prod_num : "n/a",
296 orig_prod_num, serial_no);
Helge Deller8207d4e2019-02-08 18:28:13 +0100297 add_device_randomness(orig_prod_num, strlen(orig_prod_num));
298 add_device_randomness(current_prod_num, strlen(current_prod_num));
299 add_device_randomness(serial_no, strlen(serial_no));
300 }
Helge Dellerfc632572015-12-12 18:22:03 +0100301}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
304/**
305 * init_per_cpu - Handle individual processor initializations.
306 * @cpunum: logical processor number.
307 *
308 * This function handles initialization for *every* CPU
309 * in the system:
310 *
311 * o Set "default" CPU width for trap handlers
312 *
313 * o Enable FP coprocessor
314 * REVISIT: this could be done in the "code 22" trap handler.
315 * (frowands idea - that way we know which processes need FP
316 * registers saved on the interrupt stack.)
317 * NEWS FLASH: wide kernels need FP coprocessor enabled to handle
318 * formatted printing of %lx for example (double divides I think)
319 *
320 * o Enable CPU profiling hooks.
321 */
Helge Dellerbeb48df2022-03-26 15:10:54 +0100322int init_per_cpu(int cpunum)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323{
324 int ret;
325 struct pdc_coproc_cfg coproc_cfg;
326
327 set_firmware_width();
328 ret = pdc_coproc_cfg(&coproc_cfg);
329
330 if(ret >= 0 && coproc_cfg.ccr_functional) {
331 mtctl(coproc_cfg.ccr_functional, 10); /* 10 == Coprocessor Control Reg */
332
333 /* FWIW, FP rev/model is a more accurate way to determine
334 ** CPU type. CPU rev/model has some ambiguous cases.
335 */
Helge Delleref017be2008-12-31 03:12:10 +0000336 per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
337 per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Helge Deller0032c082016-06-03 19:22:31 +0200339 if (cpunum == 0)
340 printk(KERN_INFO "FP[%d] enabled: Rev %ld Model %ld\n",
341 cpunum, coproc_cfg.revision, coproc_cfg.model);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
343 /*
344 ** store status register to stack (hopefully aligned)
345 ** and clear the T-bit.
346 */
347 asm volatile ("fstd %fr0,8(%sp)");
348
349 } else {
350 printk(KERN_WARNING "WARNING: No FP CoProcessor?!"
351 " (coproc_cfg.ccr_functional == 0x%lx, expected 0xc0)\n"
Helge Dellera8f44e32007-01-28 14:58:52 +0100352#ifdef CONFIG_64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 "Halting Machine - FP required\n"
354#endif
355 , coproc_cfg.ccr_functional);
Helge Dellera8f44e32007-01-28 14:58:52 +0100356#ifdef CONFIG_64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 mdelay(100); /* previous chars get pushed to console */
358 panic("FP CoProc not reported");
359#endif
360 }
361
362 /* FUTURE: Enable Performance Monitor : ccr bit 0x20 */
363 init_percpu_prof(cpunum);
364
365 return ret;
366}
367
368/*
Simon Arlott70226722007-05-11 20:42:34 +0100369 * Display CPU info for all CPUs.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 */
371int
372show_cpuinfo (struct seq_file *m, void *v)
373{
Helge Delleref017be2008-12-31 03:12:10 +0000374 unsigned long cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
Helge Delleref017be2008-12-31 03:12:10 +0000376 for_each_online_cpu(cpu) {
377 const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378#ifdef CONFIG_SMP
Helge Delleref017be2008-12-31 03:12:10 +0000379 if (0 == cpuinfo->hpa)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381#endif
Helge Delleref017be2008-12-31 03:12:10 +0000382 seq_printf(m, "processor\t: %lu\n"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 "cpu family\t: PA-RISC %s\n",
Helge Delleref017be2008-12-31 03:12:10 +0000384 cpu, boot_cpu_data.family_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385
386 seq_printf(m, "cpu\t\t: %s\n", boot_cpu_data.cpu_name );
387
388 /* cpu MHz */
389 seq_printf(m, "cpu MHz\t\t: %d.%06d\n",
390 boot_cpu_data.cpu_hz / 1000000,
391 boot_cpu_data.cpu_hz % 1000000 );
392
Helge Deller62773112022-03-24 19:46:50 +0100393#ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
Helge Dellerbf7b4c12017-09-21 21:55:01 +0200394 seq_printf(m, "physical id\t: %d\n",
395 topology_physical_package_id(cpu));
396 seq_printf(m, "siblings\t: %d\n",
397 cpumask_weight(topology_core_cpumask(cpu)));
398 seq_printf(m, "core id\t\t: %d\n", topology_core_id(cpu));
399#endif
400
Colin Watson445c0882009-01-30 01:03:50 +0000401 seq_printf(m, "capabilities\t:");
402 if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32)
Helge Deller30a9f0b2013-06-21 23:32:44 +0200403 seq_puts(m, " os32");
Colin Watson445c0882009-01-30 01:03:50 +0000404 if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS64)
Helge Deller30a9f0b2013-06-21 23:32:44 +0200405 seq_puts(m, " os64");
406 if (boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC)
407 seq_puts(m, " iopdir_fdc");
408 switch (boot_cpu_data.pdc.capabilities & PDC_MODEL_NVA_MASK) {
409 case PDC_MODEL_NVA_SUPPORTED:
410 seq_puts(m, " nva_supported");
411 break;
412 case PDC_MODEL_NVA_SLOW:
413 seq_puts(m, " nva_slow");
414 break;
415 case PDC_MODEL_NVA_UNSUPPORTED:
416 seq_puts(m, " needs_equivalent_aliasing");
417 break;
418 }
419 seq_printf(m, " (0x%02lx)\n", boot_cpu_data.pdc.capabilities);
Colin Watson445c0882009-01-30 01:03:50 +0000420
Helge Deller5b899662022-04-03 21:57:51 +0200421 seq_printf(m, "model\t\t: %s - %s\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 boot_cpu_data.pdc.sys_model_name,
Helge Delleref017be2008-12-31 03:12:10 +0000423 cpuinfo->dev ?
424 cpuinfo->dev->name : "Unknown");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
426 seq_printf(m, "hversion\t: 0x%08x\n"
427 "sversion\t: 0x%08x\n",
428 boot_cpu_data.hversion,
429 boot_cpu_data.sversion );
430
431 /* print cachesize info */
432 show_cache_info(m);
433
434 seq_printf(m, "bogomips\t: %lu.%02lu\n",
Helge Deller93346da2020-10-24 12:43:11 +0200435 loops_per_jiffy / (500000 / HZ),
436 loops_per_jiffy / (5000 / HZ) % 100);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
438 seq_printf(m, "software id\t: %ld\n\n",
439 boot_cpu_data.pdc.model.sw_id);
440 }
441 return 0;
442}
443
Helge Deller6c706b92017-08-21 22:09:30 +0200444static const struct parisc_device_id processor_tbl[] __initconst = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 { HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID },
446 { 0, }
447};
448
Helge Deller6c706b92017-08-21 22:09:30 +0200449static struct parisc_driver cpu_driver __refdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 .name = "CPU",
451 .id_table = processor_tbl,
452 .probe = processor_probe
453};
454
455/**
Simon Arlott70226722007-05-11 20:42:34 +0100456 * processor_init - Processor initialization procedure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 *
458 * Register this driver.
459 */
460void __init processor_init(void)
461{
Helge Deller09212442022-04-01 09:19:11 +0200462 unsigned int cpu;
463
Helge Deller62773112022-03-24 19:46:50 +0100464 reset_cpu_topology();
Helge Deller09212442022-04-01 09:19:11 +0200465
466 /* reset possible mask. We will mark those which are possible. */
467 for_each_possible_cpu(cpu)
468 set_cpu_possible(cpu, false);
469
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 register_parisc_driver(&cpu_driver);
471}