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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
033ef338 | 3 | * 64-bit pSeries and RS/6000 setup code. |
1da177e4 LT |
4 | * |
5 | * Copyright (C) 1995 Linus Torvalds | |
6 | * Adapted from 'alpha' version by Gary Thomas | |
7 | * Modified by Cort Dougan (cort@cs.nmt.edu) | |
8 | * Modified by PPC64 Team, IBM Corp | |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* | |
12 | * bootup setup stuff.. | |
13 | */ | |
14 | ||
62d60e9f | 15 | #include <linux/cpu.h> |
1da177e4 LT |
16 | #include <linux/errno.h> |
17 | #include <linux/sched.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/mm.h> | |
20 | #include <linux/stddef.h> | |
21 | #include <linux/unistd.h> | |
1da177e4 | 22 | #include <linux/user.h> |
1da177e4 LT |
23 | #include <linux/tty.h> |
24 | #include <linux/major.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/reboot.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/ioport.h> | |
29 | #include <linux/console.h> | |
30 | #include <linux/pci.h> | |
cebb2b15 | 31 | #include <linux/utsname.h> |
1da177e4 | 32 | #include <linux/adb.h> |
4b16f8e2 | 33 | #include <linux/export.h> |
1da177e4 LT |
34 | #include <linux/delay.h> |
35 | #include <linux/irq.h> | |
36 | #include <linux/seq_file.h> | |
37 | #include <linux/root_dev.h> | |
1cf3d8b3 | 38 | #include <linux/of.h> |
705a7b47 | 39 | #include <linux/of_pci.h> |
94675cce | 40 | #include <linux/memblock.h> |
1da177e4 LT |
41 | |
42 | #include <asm/mmu.h> | |
43 | #include <asm/processor.h> | |
44 | #include <asm/io.h> | |
45 | #include <asm/pgtable.h> | |
46 | #include <asm/prom.h> | |
47 | #include <asm/rtas.h> | |
48 | #include <asm/pci-bridge.h> | |
49 | #include <asm/iommu.h> | |
50 | #include <asm/dma.h> | |
51 | #include <asm/machdep.h> | |
52 | #include <asm/irq.h> | |
53 | #include <asm/time.h> | |
54 | #include <asm/nvram.h> | |
180a3362 | 55 | #include <asm/pmc.h> |
0b05ac6e | 56 | #include <asm/xics.h> |
eac1e731 | 57 | #include <asm/xive.h> |
d387899f | 58 | #include <asm/ppc-pci.h> |
69a80d3f PM |
59 | #include <asm/i8259.h> |
60 | #include <asm/udbg.h> | |
2249ca9d | 61 | #include <asm/smp.h> |
577830b0 | 62 | #include <asm/firmware.h> |
bed59275 | 63 | #include <asm/eeh.h> |
bf99de36 | 64 | #include <asm/reg.h> |
212bebb4 | 65 | #include <asm/plpar_wrappers.h> |
d81d8258 | 66 | #include <asm/kexec.h> |
38e9d36b | 67 | #include <asm/isa-bridge.h> |
f636c147 | 68 | #include <asm/security_features.h> |
ec0c464c | 69 | #include <asm/asm-const.h> |
1da177e4 | 70 | |
577830b0 | 71 | #include "pseries.h" |
44bda4b7 | 72 | #include "../../../../drivers/pci/pci.h" |
a1218720 | 73 | |
81f14997 RJ |
74 | int CMO_PrPSP = -1; |
75 | int CMO_SecPSP = -1; | |
e589a440 | 76 | unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K); |
d617a402 | 77 | EXPORT_SYMBOL(CMO_PageSize); |
1da177e4 | 78 | |
1da177e4 LT |
79 | int fwnmi_active; /* TRUE if an FWNMI handler is present */ |
80 | ||
8446196a | 81 | static void pSeries_show_cpuinfo(struct seq_file *m) |
1da177e4 LT |
82 | { |
83 | struct device_node *root; | |
84 | const char *model = ""; | |
85 | ||
86 | root = of_find_node_by_path("/"); | |
87 | if (root) | |
e2eb6392 | 88 | model = of_get_property(root, "model", NULL); |
1da177e4 LT |
89 | seq_printf(m, "machine\t\t: CHRP %s\n", model); |
90 | of_node_put(root); | |
3a4c2601 AK |
91 | if (radix_enabled()) |
92 | seq_printf(m, "MMU\t\t: Radix\n"); | |
93 | else | |
94 | seq_printf(m, "MMU\t\t: Hash\n"); | |
1da177e4 LT |
95 | } |
96 | ||
97 | /* Initialize firmware assisted non-maskable interrupts if | |
98 | * the firmware supports this feature. | |
1da177e4 LT |
99 | */ |
100 | static void __init fwnmi_init(void) | |
101 | { | |
8c4f1f29 | 102 | unsigned long system_reset_addr, machine_check_addr; |
94675cce MS |
103 | u8 *mce_data_buf; |
104 | unsigned int i; | |
105 | int nr_cpus = num_possible_cpus(); | |
c6d15258 MS |
106 | #ifdef CONFIG_PPC_BOOK3S_64 |
107 | struct slb_entry *slb_ptr; | |
108 | size_t size; | |
109 | #endif | |
8c4f1f29 | 110 | |
1da177e4 LT |
111 | int ibm_nmi_register = rtas_token("ibm,nmi-register"); |
112 | if (ibm_nmi_register == RTAS_UNKNOWN_SERVICE) | |
113 | return; | |
8c4f1f29 ME |
114 | |
115 | /* If the kernel's not linked at zero we point the firmware at low | |
116 | * addresses anyway, and use a trampoline to get to the real code. */ | |
117 | system_reset_addr = __pa(system_reset_fwnmi) - PHYSICAL_START; | |
118 | machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START; | |
119 | ||
120 | if (0 == rtas_call(ibm_nmi_register, 2, 1, NULL, system_reset_addr, | |
121 | machine_check_addr)) | |
1da177e4 | 122 | fwnmi_active = 1; |
94675cce MS |
123 | |
124 | /* | |
125 | * Allocate a chunk for per cpu buffer to hold rtas errorlog. | |
126 | * It will be used in real mode mce handler, hence it needs to be | |
127 | * below RMA. | |
128 | */ | |
f806714f MR |
129 | mce_data_buf = memblock_alloc_try_nid_raw(RTAS_ERROR_LOG_MAX * nr_cpus, |
130 | RTAS_ERROR_LOG_MAX, MEMBLOCK_LOW_LIMIT, | |
131 | ppc64_rma_size, NUMA_NO_NODE); | |
132 | if (!mce_data_buf) | |
133 | panic("Failed to allocate %d bytes below %pa for MCE buffer\n", | |
134 | RTAS_ERROR_LOG_MAX * nr_cpus, &ppc64_rma_size); | |
135 | ||
94675cce MS |
136 | for_each_possible_cpu(i) { |
137 | paca_ptrs[i]->mce_data_buf = mce_data_buf + | |
138 | (RTAS_ERROR_LOG_MAX * i); | |
139 | } | |
c6d15258 MS |
140 | |
141 | #ifdef CONFIG_PPC_BOOK3S_64 | |
142 | /* Allocate per cpu slb area to save old slb contents during MCE */ | |
143 | size = sizeof(struct slb_entry) * mmu_slb_size * nr_cpus; | |
f806714f MR |
144 | slb_ptr = memblock_alloc_try_nid_raw(size, sizeof(struct slb_entry), |
145 | MEMBLOCK_LOW_LIMIT, ppc64_rma_size, | |
146 | NUMA_NO_NODE); | |
147 | if (!slb_ptr) | |
148 | panic("Failed to allocate %zu bytes below %pa for slb area\n", | |
149 | size, &ppc64_rma_size); | |
150 | ||
c6d15258 MS |
151 | for_each_possible_cpu(i) |
152 | paca_ptrs[i]->mce_faulty_slbs = slb_ptr + (mmu_slb_size * i); | |
153 | #endif | |
1da177e4 LT |
154 | } |
155 | ||
bd0b9ac4 | 156 | static void pseries_8259_cascade(struct irq_desc *desc) |
b9e5b4e6 | 157 | { |
ec775d0e | 158 | struct irq_chip *chip = irq_desc_get_chip(desc); |
35a84c2f | 159 | unsigned int cascade_irq = i8259_irq(); |
79f26c26 | 160 | |
ef24ba70 | 161 | if (cascade_irq) |
7d12e780 | 162 | generic_handle_irq(cascade_irq); |
79f26c26 LB |
163 | |
164 | chip->irq_eoi(&desc->irq_data); | |
b9e5b4e6 BH |
165 | } |
166 | ||
30d6ad25 | 167 | static void __init pseries_setup_i8259_cascade(void) |
032ace7e ME |
168 | { |
169 | struct device_node *np, *old, *found = NULL; | |
30d6ad25 | 170 | unsigned int cascade; |
032ace7e ME |
171 | const u32 *addrp; |
172 | unsigned long intack = 0; | |
30d6ad25 | 173 | int naddr; |
032ace7e | 174 | |
30d6ad25 | 175 | for_each_node_by_type(np, "interrupt-controller") { |
032ace7e ME |
176 | if (of_device_is_compatible(np, "chrp,iic")) { |
177 | found = np; | |
178 | break; | |
179 | } | |
30d6ad25 ME |
180 | } |
181 | ||
032ace7e | 182 | if (found == NULL) { |
30d6ad25 | 183 | printk(KERN_DEBUG "pic: no ISA interrupt controller\n"); |
032ace7e ME |
184 | return; |
185 | } | |
30d6ad25 | 186 | |
032ace7e | 187 | cascade = irq_of_parse_and_map(found, 0); |
ef24ba70 | 188 | if (!cascade) { |
30d6ad25 | 189 | printk(KERN_ERR "pic: failed to map cascade interrupt"); |
032ace7e ME |
190 | return; |
191 | } | |
30d6ad25 | 192 | pr_debug("pic: cascade mapped to irq %d\n", cascade); |
032ace7e ME |
193 | |
194 | for (old = of_node_get(found); old != NULL ; old = np) { | |
195 | np = of_get_parent(old); | |
196 | of_node_put(old); | |
197 | if (np == NULL) | |
198 | break; | |
2c8e65b5 | 199 | if (!of_node_name_eq(np, "pci")) |
032ace7e ME |
200 | continue; |
201 | addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL); | |
202 | if (addrp == NULL) | |
203 | continue; | |
204 | naddr = of_n_addr_cells(np); | |
205 | intack = addrp[naddr-1]; | |
206 | if (naddr > 1) | |
207 | intack |= ((unsigned long)addrp[naddr-2]) << 32; | |
208 | } | |
209 | if (intack) | |
30d6ad25 | 210 | printk(KERN_DEBUG "pic: PCI 8259 intack at 0x%016lx\n", intack); |
032ace7e ME |
211 | i8259_init(found, intack); |
212 | of_node_put(found); | |
ec775d0e | 213 | irq_set_chained_handler(cascade, pseries_8259_cascade); |
032ace7e ME |
214 | } |
215 | ||
e7da5dac | 216 | static void __init pseries_init_irq(void) |
032ace7e | 217 | { |
eac1e731 CLG |
218 | /* Try using a XIVE if available, otherwise use a XICS */ |
219 | if (!xive_spapr_init()) { | |
220 | xics_init(); | |
221 | pseries_setup_i8259_cascade(); | |
222 | } | |
032ace7e ME |
223 | } |
224 | ||
180a3362 ME |
225 | static void pseries_lpar_enable_pmcs(void) |
226 | { | |
227 | unsigned long set, reset; | |
228 | ||
180a3362 ME |
229 | set = 1UL << 63; |
230 | reset = 0; | |
231 | plpar_hcall_norets(H_PERFMON, set, reset); | |
180a3362 ME |
232 | } |
233 | ||
f5242e5a | 234 | static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *data) |
2eb4afb6 | 235 | { |
f5242e5a | 236 | struct of_reconfig_data *rd = data; |
ea0f8acf GS |
237 | struct device_node *parent, *np = rd->dn; |
238 | struct pci_dn *pdn; | |
2eb4afb6 KG |
239 | int err = NOTIFY_OK; |
240 | ||
241 | switch (action) { | |
1cf3d8b3 | 242 | case OF_RECONFIG_ATTACH_NODE: |
ea0f8acf GS |
243 | parent = of_get_parent(np); |
244 | pdn = parent ? PCI_DN(parent) : NULL; | |
8cc7581c | 245 | if (pdn) |
d8f66f41 | 246 | pci_add_device_node_info(pdn->phb, np); |
ea0f8acf GS |
247 | |
248 | of_node_put(parent); | |
2eb4afb6 | 249 | break; |
590c7567 | 250 | case OF_RECONFIG_DETACH_NODE: |
ea0f8acf GS |
251 | pdn = PCI_DN(np); |
252 | if (pdn) | |
253 | list_del(&pdn->list); | |
590c7567 | 254 | break; |
2eb4afb6 KG |
255 | default: |
256 | err = NOTIFY_DONE; | |
257 | break; | |
258 | } | |
259 | return err; | |
260 | } | |
261 | ||
262 | static struct notifier_block pci_dn_reconfig_nb = { | |
263 | .notifier_call = pci_dn_reconfig_notifier, | |
264 | }; | |
265 | ||
af442a1b NA |
266 | struct kmem_cache *dtl_cache; |
267 | ||
abf917cd | 268 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
cf9efce0 PM |
269 | /* |
270 | * Allocate space for the dispatch trace log for all possible cpus | |
271 | * and register the buffers with the hypervisor. This is used for | |
272 | * computing time stolen by the hypervisor. | |
273 | */ | |
274 | static int alloc_dispatch_logs(void) | |
275 | { | |
276 | int cpu, ret; | |
277 | struct paca_struct *pp; | |
278 | struct dtl_entry *dtl; | |
279 | ||
280 | if (!firmware_has_feature(FW_FEATURE_SPLPAR)) | |
281 | return 0; | |
282 | ||
af442a1b | 283 | if (!dtl_cache) |
127493d5 | 284 | return 0; |
127493d5 | 285 | |
cf9efce0 | 286 | for_each_possible_cpu(cpu) { |
d2e60075 | 287 | pp = paca_ptrs[cpu]; |
127493d5 | 288 | dtl = kmem_cache_alloc(dtl_cache, GFP_KERNEL); |
cf9efce0 PM |
289 | if (!dtl) { |
290 | pr_warn("Failed to allocate dispatch trace log for cpu %d\n", | |
291 | cpu); | |
292 | pr_warn("Stolen time statistics will be unreliable\n"); | |
293 | break; | |
294 | } | |
295 | ||
296 | pp->dtl_ridx = 0; | |
297 | pp->dispatch_log = dtl; | |
298 | pp->dispatch_log_end = dtl + N_DISPATCH_LOG; | |
299 | pp->dtl_curr = dtl; | |
300 | } | |
301 | ||
302 | /* Register the DTL for the current (boot) cpu */ | |
303 | dtl = get_paca()->dispatch_log; | |
304 | get_paca()->dtl_ridx = 0; | |
305 | get_paca()->dtl_curr = dtl; | |
306 | get_paca()->lppaca_ptr->dtl_idx = 0; | |
307 | ||
308 | /* hypervisor reads buffer length from this field */ | |
7ffcf8ec | 309 | dtl->enqueue_to_dispatch_time = cpu_to_be32(DISPATCH_LOG_BYTES); |
cf9efce0 PM |
310 | ret = register_dtl(hard_smp_processor_id(), __pa(dtl)); |
311 | if (ret) | |
711ef84e AB |
312 | pr_err("WARNING: DTL registration of cpu %d (hw %d) failed " |
313 | "with %d\n", smp_processor_id(), | |
314 | hard_smp_processor_id(), ret); | |
cf9efce0 PM |
315 | get_paca()->lppaca_ptr->dtl_enable_mask = 2; |
316 | ||
317 | return 0; | |
318 | } | |
abf917cd | 319 | #else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ |
af442a1b NA |
320 | static inline int alloc_dispatch_logs(void) |
321 | { | |
322 | return 0; | |
323 | } | |
abf917cd | 324 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ |
cf9efce0 | 325 | |
af442a1b NA |
326 | static int alloc_dispatch_log_kmem_cache(void) |
327 | { | |
328 | dtl_cache = kmem_cache_create("dtl", DISPATCH_LOG_BYTES, | |
329 | DISPATCH_LOG_BYTES, 0, NULL); | |
330 | if (!dtl_cache) { | |
331 | pr_warn("Failed to create dispatch trace log buffer cache\n"); | |
332 | pr_warn("Stolen time statistics will be unreliable\n"); | |
333 | return 0; | |
334 | } | |
335 | ||
336 | return alloc_dispatch_logs(); | |
337 | } | |
8e83e905 | 338 | machine_early_initcall(pseries, alloc_dispatch_log_kmem_cache); |
af442a1b | 339 | |
363edbe2 | 340 | static void pseries_lpar_idle(void) |
e179816c | 341 | { |
d8c6ad31 NP |
342 | /* |
343 | * Default handler to go into low thread priority and possibly | |
027dfac6 | 344 | * low power mode by ceding processor to hypervisor |
e179816c | 345 | */ |
d8c6ad31 NP |
346 | |
347 | /* Indicate to hypervisor that we are idle. */ | |
348 | get_lppaca()->idle = 1; | |
349 | ||
350 | /* | |
351 | * Yield the processor to the hypervisor. We return if | |
352 | * an external interrupt occurs (which are driven prior | |
353 | * to returning here) or if a prod occurs from another | |
354 | * processor. When returning here, external interrupts | |
355 | * are enabled. | |
356 | */ | |
357 | cede_processor(); | |
358 | ||
359 | get_lppaca()->idle = 0; | |
e179816c DD |
360 | } |
361 | ||
fc8effa4 IM |
362 | /* |
363 | * Enable relocation on during exceptions. This has partition wide scope and | |
364 | * may take a while to complete, if it takes longer than one second we will | |
365 | * just give up rather than wasting any more time on this - if that turns out | |
366 | * to ever be a problem in practice we can move this into a kernel thread to | |
367 | * finish off the process later in boot. | |
368 | */ | |
d3cbff1b | 369 | void pseries_enable_reloc_on_exc(void) |
fc8effa4 IM |
370 | { |
371 | long rc; | |
372 | unsigned int delay, total_delay = 0; | |
373 | ||
374 | while (1) { | |
375 | rc = enable_reloc_on_exceptions(); | |
d3cbff1b BH |
376 | if (!H_IS_LONG_BUSY(rc)) { |
377 | if (rc == H_P2) { | |
378 | pr_info("Relocation on exceptions not" | |
379 | " supported\n"); | |
380 | } else if (rc != H_SUCCESS) { | |
381 | pr_warn("Unable to enable relocation" | |
382 | " on exceptions: %ld\n", rc); | |
383 | } | |
384 | break; | |
385 | } | |
fc8effa4 IM |
386 | |
387 | delay = get_longbusy_msecs(rc); | |
388 | total_delay += delay; | |
389 | if (total_delay > 1000) { | |
390 | pr_warn("Warning: Giving up waiting to enable " | |
391 | "relocation on exceptions (%u msec)!\n", | |
392 | total_delay); | |
d3cbff1b | 393 | return; |
fc8effa4 IM |
394 | } |
395 | ||
396 | mdelay(delay); | |
397 | } | |
398 | } | |
d3cbff1b | 399 | EXPORT_SYMBOL(pseries_enable_reloc_on_exc); |
fc8effa4 | 400 | |
d3cbff1b | 401 | void pseries_disable_reloc_on_exc(void) |
cedddd81 IM |
402 | { |
403 | long rc; | |
404 | ||
405 | while (1) { | |
406 | rc = disable_reloc_on_exceptions(); | |
407 | if (!H_IS_LONG_BUSY(rc)) | |
d3cbff1b | 408 | break; |
cedddd81 IM |
409 | mdelay(get_longbusy_msecs(rc)); |
410 | } | |
d3cbff1b | 411 | if (rc != H_SUCCESS) |
f2c2cbcc JP |
412 | pr_warn("Warning: Failed to disable relocation on exceptions: %ld\n", |
413 | rc); | |
cedddd81 | 414 | } |
d3cbff1b | 415 | EXPORT_SYMBOL(pseries_disable_reloc_on_exc); |
cedddd81 | 416 | |
da665885 | 417 | #ifdef CONFIG_KEXEC_CORE |
cedddd81 IM |
418 | static void pSeries_machine_kexec(struct kimage *image) |
419 | { | |
d3cbff1b BH |
420 | if (firmware_has_feature(FW_FEATURE_SET_MODE)) |
421 | pseries_disable_reloc_on_exc(); | |
cedddd81 IM |
422 | |
423 | default_machine_kexec(image); | |
424 | } | |
425 | #endif | |
426 | ||
e844b1ee | 427 | #ifdef __LITTLE_ENDIAN__ |
d3cbff1b | 428 | void pseries_big_endian_exceptions(void) |
e844b1ee AB |
429 | { |
430 | long rc; | |
431 | ||
432 | while (1) { | |
433 | rc = enable_big_endian_exceptions(); | |
434 | if (!H_IS_LONG_BUSY(rc)) | |
d3cbff1b | 435 | break; |
e844b1ee AB |
436 | mdelay(get_longbusy_msecs(rc)); |
437 | } | |
d3cbff1b BH |
438 | |
439 | /* | |
440 | * At this point it is unlikely panic() will get anything | |
441 | * out to the user, since this is called very late in kexec | |
442 | * but at least this will stop us from continuing on further | |
443 | * and creating an even more difficult to debug situation. | |
444 | * | |
445 | * There is a known problem when kdump'ing, if cpus are offline | |
446 | * the above call will fail. Rather than panicking again, keep | |
447 | * going and hope the kdump kernel is also little endian, which | |
448 | * it usually is. | |
449 | */ | |
450 | if (rc && !kdump_in_progress()) | |
451 | panic("Could not enable big endian exceptions"); | |
e844b1ee AB |
452 | } |
453 | ||
d3cbff1b | 454 | void pseries_little_endian_exceptions(void) |
e844b1ee AB |
455 | { |
456 | long rc; | |
457 | ||
458 | while (1) { | |
459 | rc = enable_little_endian_exceptions(); | |
460 | if (!H_IS_LONG_BUSY(rc)) | |
d3cbff1b | 461 | break; |
e844b1ee AB |
462 | mdelay(get_longbusy_msecs(rc)); |
463 | } | |
d3cbff1b BH |
464 | if (rc) { |
465 | ppc_md.progress("H_SET_MODE LE exception fail", 0); | |
466 | panic("Could not enable little endian exceptions"); | |
467 | } | |
e844b1ee AB |
468 | } |
469 | #endif | |
470 | ||
bdc728a8 DA |
471 | static void __init find_and_init_phbs(void) |
472 | { | |
473 | struct device_node *node; | |
474 | struct pci_controller *phb; | |
475 | struct device_node *root = of_find_node_by_path("/"); | |
476 | ||
477 | for_each_child_of_node(root, node) { | |
e5480bdc RH |
478 | if (!of_node_is_type(node, "pci") && |
479 | !of_node_is_type(node, "pciex")) | |
bdc728a8 DA |
480 | continue; |
481 | ||
482 | phb = pcibios_alloc_controller(node); | |
483 | if (!phb) | |
484 | continue; | |
485 | rtas_setup_phb(phb); | |
486 | pci_process_bridge_OF_ranges(phb, node, 0); | |
487 | isa_bridge_find_early(phb); | |
38ae9ec4 | 488 | phb->controller_ops = pseries_pci_controller_ops; |
bdc728a8 DA |
489 | } |
490 | ||
491 | of_node_put(root); | |
bdc728a8 DA |
492 | |
493 | /* | |
494 | * PCI_PROBE_ONLY and PCI_REASSIGN_ALL_BUS can be set via properties | |
495 | * in chosen. | |
496 | */ | |
705a7b47 | 497 | of_pci_check_probe_only(); |
bdc728a8 DA |
498 | } |
499 | ||
f636c147 ME |
500 | static void init_cpu_char_feature_flags(struct h_cpu_char_result *result) |
501 | { | |
6232774f MFO |
502 | /* |
503 | * The features below are disabled by default, so we instead look to see | |
504 | * if firmware has *enabled* them, and set them if so. | |
505 | */ | |
f636c147 ME |
506 | if (result->character & H_CPU_CHAR_SPEC_BAR_ORI31) |
507 | security_ftr_set(SEC_FTR_SPEC_BAR_ORI31); | |
508 | ||
509 | if (result->character & H_CPU_CHAR_BCCTRL_SERIALISED) | |
510 | security_ftr_set(SEC_FTR_BCCTRL_SERIALISED); | |
511 | ||
512 | if (result->character & H_CPU_CHAR_L1D_FLUSH_ORI30) | |
513 | security_ftr_set(SEC_FTR_L1D_FLUSH_ORI30); | |
514 | ||
515 | if (result->character & H_CPU_CHAR_L1D_FLUSH_TRIG2) | |
516 | security_ftr_set(SEC_FTR_L1D_FLUSH_TRIG2); | |
517 | ||
518 | if (result->character & H_CPU_CHAR_L1D_THREAD_PRIV) | |
519 | security_ftr_set(SEC_FTR_L1D_THREAD_PRIV); | |
520 | ||
521 | if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED) | |
522 | security_ftr_set(SEC_FTR_COUNT_CACHE_DISABLED); | |
523 | ||
ba72dc17 ME |
524 | if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST) |
525 | security_ftr_set(SEC_FTR_BCCTR_FLUSH_ASSIST); | |
526 | ||
527 | if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE) | |
528 | security_ftr_set(SEC_FTR_FLUSH_COUNT_CACHE); | |
529 | ||
f636c147 ME |
530 | /* |
531 | * The features below are enabled by default, so we instead look to see | |
532 | * if firmware has *disabled* them, and clear them if so. | |
533 | */ | |
0f9bdfe3 | 534 | if (!(result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY)) |
f636c147 ME |
535 | security_ftr_clear(SEC_FTR_FAVOUR_SECURITY); |
536 | ||
0f9bdfe3 | 537 | if (!(result->behaviour & H_CPU_BEHAV_L1D_FLUSH_PR)) |
f636c147 ME |
538 | security_ftr_clear(SEC_FTR_L1D_FLUSH_PR); |
539 | ||
0f9bdfe3 | 540 | if (!(result->behaviour & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR)) |
f636c147 ME |
541 | security_ftr_clear(SEC_FTR_BNDS_CHK_SPEC_BAR); |
542 | } | |
543 | ||
921bc6cf | 544 | void pseries_setup_rfi_flush(void) |
8989d568 MN |
545 | { |
546 | struct h_cpu_char_result result; | |
547 | enum l1d_flush_type types; | |
548 | bool enable; | |
549 | long rc; | |
550 | ||
6232774f MFO |
551 | /* |
552 | * Set features to the defaults assumed by init_cpu_char_feature_flags() | |
553 | * so it can set/clear again any features that might have changed after | |
554 | * migration, and in case the hypercall fails and it is not even called. | |
555 | */ | |
556 | powerpc_security_features = SEC_FTR_DEFAULT; | |
557 | ||
8989d568 | 558 | rc = plpar_get_cpu_characteristics(&result); |
2e4a1616 | 559 | if (rc == H_SUCCESS) |
f636c147 ME |
560 | init_cpu_char_feature_flags(&result); |
561 | ||
f636c147 ME |
562 | /* |
563 | * We're the guest so this doesn't apply to us, clear it to simplify | |
564 | * handling of it elsewhere. | |
565 | */ | |
566 | security_ftr_clear(SEC_FTR_L1D_FLUSH_HV); | |
567 | ||
2e4a1616 ME |
568 | types = L1D_FLUSH_FALLBACK; |
569 | ||
570 | if (security_ftr_enabled(SEC_FTR_L1D_FLUSH_TRIG2)) | |
571 | types |= L1D_FLUSH_MTTRIG; | |
572 | ||
573 | if (security_ftr_enabled(SEC_FTR_L1D_FLUSH_ORI30)) | |
574 | types |= L1D_FLUSH_ORI; | |
575 | ||
576 | enable = security_ftr_enabled(SEC_FTR_FAVOUR_SECURITY) && \ | |
577 | security_ftr_enabled(SEC_FTR_L1D_FLUSH_PR); | |
578 | ||
8989d568 | 579 | setup_rfi_flush(types, enable); |
ba72dc17 | 580 | setup_count_cache_flush(); |
8989d568 MN |
581 | } |
582 | ||
fc5f6221 BL |
583 | #ifdef CONFIG_PCI_IOV |
584 | enum rtas_iov_fw_value_map { | |
585 | NUM_RES_PROPERTY = 0, /* Number of Resources */ | |
586 | LOW_INT = 1, /* Lowest 32 bits of Address */ | |
587 | START_OF_ENTRIES = 2, /* Always start of entry */ | |
588 | APERTURE_PROPERTY = 2, /* Start of entry+ to Aperture Size */ | |
589 | WDW_SIZE_PROPERTY = 4, /* Start of entry+ to Window Size */ | |
590 | NEXT_ENTRY = 7 /* Go to next entry on array */ | |
591 | }; | |
592 | ||
593 | enum get_iov_fw_value_index { | |
594 | BAR_ADDRS = 1, /* Get Bar Address */ | |
595 | APERTURE_SIZE = 2, /* Get Aperture Size */ | |
596 | WDW_SIZE = 3 /* Get Window Size */ | |
597 | }; | |
598 | ||
599 | resource_size_t pseries_get_iov_fw_value(struct pci_dev *dev, int resno, | |
600 | enum get_iov_fw_value_index value) | |
601 | { | |
602 | const int *indexes; | |
603 | struct device_node *dn = pci_device_to_OF_node(dev); | |
604 | int i, num_res, ret = 0; | |
605 | ||
606 | indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); | |
607 | if (!indexes) | |
608 | return 0; | |
609 | ||
610 | /* | |
611 | * First element in the array is the number of Bars | |
612 | * returned. Search through the list to find the matching | |
613 | * bar | |
614 | */ | |
615 | num_res = of_read_number(&indexes[NUM_RES_PROPERTY], 1); | |
616 | if (resno >= num_res) | |
617 | return 0; /* or an errror */ | |
618 | ||
619 | i = START_OF_ENTRIES + NEXT_ENTRY * resno; | |
620 | switch (value) { | |
621 | case BAR_ADDRS: | |
622 | ret = of_read_number(&indexes[i], 2); | |
623 | break; | |
624 | case APERTURE_SIZE: | |
625 | ret = of_read_number(&indexes[i + APERTURE_PROPERTY], 2); | |
626 | break; | |
627 | case WDW_SIZE: | |
628 | ret = of_read_number(&indexes[i + WDW_SIZE_PROPERTY], 2); | |
629 | break; | |
630 | } | |
631 | ||
632 | return ret; | |
633 | } | |
634 | ||
635 | void of_pci_set_vf_bar_size(struct pci_dev *dev, const int *indexes) | |
636 | { | |
637 | struct resource *res; | |
638 | resource_size_t base, size; | |
639 | int i, r, num_res; | |
640 | ||
641 | num_res = of_read_number(&indexes[NUM_RES_PROPERTY], 1); | |
642 | num_res = min_t(int, num_res, PCI_SRIOV_NUM_BARS); | |
643 | for (i = START_OF_ENTRIES, r = 0; r < num_res && r < PCI_SRIOV_NUM_BARS; | |
644 | i += NEXT_ENTRY, r++) { | |
645 | res = &dev->resource[r + PCI_IOV_RESOURCES]; | |
646 | base = of_read_number(&indexes[i], 2); | |
647 | size = of_read_number(&indexes[i + APERTURE_PROPERTY], 2); | |
648 | res->flags = pci_parse_of_flags(of_read_number | |
649 | (&indexes[i + LOW_INT], 1), 0); | |
650 | res->flags |= (IORESOURCE_MEM_64 | IORESOURCE_PCI_FIXED); | |
651 | res->name = pci_name(dev); | |
652 | res->start = base; | |
653 | res->end = base + size - 1; | |
654 | } | |
655 | } | |
656 | ||
657 | void of_pci_parse_iov_addrs(struct pci_dev *dev, const int *indexes) | |
658 | { | |
659 | struct resource *res, *root, *conflict; | |
660 | resource_size_t base, size; | |
661 | int i, r, num_res; | |
662 | ||
663 | /* | |
664 | * First element in the array is the number of Bars | |
665 | * returned. Search through the list to find the matching | |
666 | * bars assign them from firmware into resources structure. | |
667 | */ | |
668 | num_res = of_read_number(&indexes[NUM_RES_PROPERTY], 1); | |
669 | for (i = START_OF_ENTRIES, r = 0; r < num_res && r < PCI_SRIOV_NUM_BARS; | |
670 | i += NEXT_ENTRY, r++) { | |
671 | res = &dev->resource[r + PCI_IOV_RESOURCES]; | |
672 | base = of_read_number(&indexes[i], 2); | |
673 | size = of_read_number(&indexes[i + WDW_SIZE_PROPERTY], 2); | |
674 | res->name = pci_name(dev); | |
675 | res->start = base; | |
676 | res->end = base + size - 1; | |
677 | root = &iomem_resource; | |
678 | dev_dbg(&dev->dev, | |
679 | "pSeries IOV BAR %d: trying firmware assignment %pR\n", | |
680 | r + PCI_IOV_RESOURCES, res); | |
681 | conflict = request_resource_conflict(root, res); | |
682 | if (conflict) { | |
683 | dev_info(&dev->dev, | |
684 | "BAR %d: %pR conflicts with %s %pR\n", | |
685 | r + PCI_IOV_RESOURCES, res, | |
686 | conflict->name, conflict); | |
687 | res->flags |= IORESOURCE_UNSET; | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
b87b9cf4 SB |
692 | static void pseries_disable_sriov_resources(struct pci_dev *pdev) |
693 | { | |
694 | int i; | |
695 | ||
696 | pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n"); | |
697 | for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) | |
698 | pdev->resource[i + PCI_IOV_RESOURCES].flags = 0; | |
699 | } | |
700 | ||
fc5f6221 BL |
701 | static void pseries_pci_fixup_resources(struct pci_dev *pdev) |
702 | { | |
703 | const int *indexes; | |
704 | struct device_node *dn = pci_device_to_OF_node(pdev); | |
705 | ||
706 | /*Firmware must support open sriov otherwise dont configure*/ | |
707 | indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); | |
b87b9cf4 SB |
708 | if (indexes) |
709 | of_pci_set_vf_bar_size(pdev, indexes); | |
710 | else | |
711 | pseries_disable_sriov_resources(pdev); | |
fc5f6221 BL |
712 | } |
713 | ||
714 | static void pseries_pci_fixup_iov_resources(struct pci_dev *pdev) | |
715 | { | |
716 | const int *indexes; | |
717 | struct device_node *dn = pci_device_to_OF_node(pdev); | |
718 | ||
44bda4b7 | 719 | if (!pdev->is_physfn || pci_dev_is_added(pdev)) |
fc5f6221 BL |
720 | return; |
721 | /*Firmware must support open sriov otherwise dont configure*/ | |
722 | indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); | |
b87b9cf4 SB |
723 | if (indexes) |
724 | of_pci_parse_iov_addrs(pdev, indexes); | |
725 | else | |
726 | pseries_disable_sriov_resources(pdev); | |
fc5f6221 BL |
727 | } |
728 | ||
729 | static resource_size_t pseries_pci_iov_resource_alignment(struct pci_dev *pdev, | |
730 | int resno) | |
731 | { | |
732 | const __be32 *reg; | |
733 | struct device_node *dn = pci_device_to_OF_node(pdev); | |
734 | ||
735 | /*Firmware must support open sriov otherwise report regular alignment*/ | |
736 | reg = of_get_property(dn, "ibm,is-open-sriov-pf", NULL); | |
737 | if (!reg) | |
738 | return pci_iov_resource_size(pdev, resno); | |
739 | ||
740 | if (!pdev->is_physfn) | |
741 | return 0; | |
742 | return pseries_get_iov_fw_value(pdev, | |
743 | resno - PCI_IOV_RESOURCES, | |
744 | APERTURE_SIZE); | |
745 | } | |
746 | #endif | |
747 | ||
0ebfff14 BH |
748 | static void __init pSeries_setup_arch(void) |
749 | { | |
b71d47c1 | 750 | set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT); |
a934904d | 751 | |
0ebfff14 | 752 | /* Discover PIC type and setup ppc_md accordingly */ |
86425bed | 753 | smp_init_pseries(); |
e7da5dac | 754 | |
0ebfff14 | 755 | |
1da177e4 LT |
756 | /* openpic global configuration register (64-bit format). */ |
757 | /* openpic Interrupt Source Unit pointer (64-bit format). */ | |
758 | /* python0 facility area (mmio) (64-bit format) REAL address. */ | |
759 | ||
760 | /* init to some ~sane value until calibrate_delay() runs */ | |
761 | loops_per_jiffy = 50000000; | |
762 | ||
1da177e4 LT |
763 | fwnmi_init(); |
764 | ||
8989d568 | 765 | pseries_setup_rfi_flush(); |
a048a07d | 766 | setup_stf_barrier(); |
8989d568 | 767 | |
446957ba | 768 | /* By default, only probe PCI (can be overridden by rtas_pci) */ |
673c9756 | 769 | pci_add_flags(PCI_PROBE_ONLY); |
3c13be01 | 770 | |
1da177e4 LT |
771 | /* Find and initialize PCI host bridges */ |
772 | init_pci_config_tokens(); | |
1da177e4 | 773 | find_and_init_phbs(); |
1cf3d8b3 | 774 | of_reconfig_notifier_register(&pci_dn_reconfig_nb); |
1da177e4 | 775 | |
1da177e4 LT |
776 | pSeries_nvram_init(); |
777 | ||
363edbe2 | 778 | if (firmware_has_feature(FW_FEATURE_LPAR)) { |
8d15a3e5 | 779 | vpa_init(boot_cpuid); |
363edbe2 | 780 | ppc_md.power_save = pseries_lpar_idle; |
180a3362 | 781 | ppc_md.enable_pmcs = pseries_lpar_enable_pmcs; |
fc5f6221 BL |
782 | #ifdef CONFIG_PCI_IOV |
783 | ppc_md.pcibios_fixup_resources = | |
784 | pseries_pci_fixup_resources; | |
785 | ppc_md.pcibios_fixup_sriov = | |
786 | pseries_pci_fixup_iov_resources; | |
787 | ppc_md.pcibios_iov_resource_alignment = | |
788 | pseries_pci_iov_resource_alignment; | |
789 | #endif | |
363edbe2 VS |
790 | } else { |
791 | /* No special idle routine */ | |
180a3362 | 792 | ppc_md.enable_pmcs = power4_enable_pmcs; |
363edbe2 | 793 | } |
fc8effa4 | 794 | |
d82fb31a | 795 | ppc_md.pcibios_root_bridge_prepare = pseries_root_bridge_prepare; |
1da177e4 LT |
796 | } |
797 | ||
35adacd6 NP |
798 | static void pseries_panic(char *str) |
799 | { | |
800 | panic_flush_kmsg_end(); | |
801 | rtas_os_term(str); | |
802 | } | |
803 | ||
1da177e4 LT |
804 | static int __init pSeries_init_panel(void) |
805 | { | |
806 | /* Manually leave the kernel version on the panel. */ | |
983d8a6d | 807 | #ifdef __BIG_ENDIAN__ |
1da177e4 | 808 | ppc_md.progress("Linux ppc64\n", 0); |
983d8a6d TB |
809 | #else |
810 | ppc_md.progress("Linux ppc64le\n", 0); | |
811 | #endif | |
96b644bd | 812 | ppc_md.progress(init_utsname()->version, 0); |
1da177e4 LT |
813 | |
814 | return 0; | |
815 | } | |
f86d6b9b | 816 | machine_arch_initcall(pseries, pSeries_init_panel); |
1da177e4 | 817 | |
4474ef05 | 818 | static int pseries_set_dabr(unsigned long dabr, unsigned long dabrx) |
cab0af98 | 819 | { |
76032de8 | 820 | return plpar_hcall_norets(H_SET_DABR, dabr); |
cab0af98 ME |
821 | } |
822 | ||
4474ef05 | 823 | static int pseries_set_xdabr(unsigned long dabr, unsigned long dabrx) |
76032de8 | 824 | { |
4474ef05 MN |
825 | /* Have to set at least one bit in the DABRX according to PAPR */ |
826 | if (dabrx == 0 && dabr == 0) | |
827 | dabrx = DABRX_USER; | |
828 | /* PAPR says we can only set kernel and user bits */ | |
cd144573 | 829 | dabrx &= DABRX_KERNEL | DABRX_USER; |
4474ef05 MN |
830 | |
831 | return plpar_hcall_norets(H_SET_XDABR, dabr, dabrx); | |
76032de8 | 832 | } |
1da177e4 | 833 | |
bf99de36 MN |
834 | static int pseries_set_dawr(unsigned long dawr, unsigned long dawrx) |
835 | { | |
836 | /* PAPR says we can't set HYP */ | |
837 | dawrx &= ~DAWRX_HYP; | |
838 | ||
7c09c186 | 839 | return plpar_set_watchpoint0(dawr, dawrx); |
bf99de36 MN |
840 | } |
841 | ||
e46de429 RJ |
842 | #define CMO_CHARACTERISTICS_TOKEN 44 |
843 | #define CMO_MAXLENGTH 1026 | |
844 | ||
9ee820fa BK |
845 | void pSeries_coalesce_init(void) |
846 | { | |
847 | struct hvcall_mpp_x_data mpp_x_data; | |
848 | ||
849 | if (firmware_has_feature(FW_FEATURE_CMO) && !h_get_mpp_x(&mpp_x_data)) | |
850 | powerpc_firmware_features |= FW_FEATURE_XCMO; | |
851 | else | |
852 | powerpc_firmware_features &= ~FW_FEATURE_XCMO; | |
853 | } | |
854 | ||
e46de429 RJ |
855 | /** |
856 | * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions, | |
857 | * handle that here. (Stolen from parse_system_parameter_string) | |
858 | */ | |
e51df2c1 | 859 | static void pSeries_cmo_feature_init(void) |
e46de429 RJ |
860 | { |
861 | char *ptr, *key, *value, *end; | |
862 | int call_status; | |
e589a440 | 863 | int page_order = IOMMU_PAGE_SHIFT_4K; |
e46de429 RJ |
864 | |
865 | pr_debug(" -> fw_cmo_feature_init()\n"); | |
866 | spin_lock(&rtas_data_buf_lock); | |
867 | memset(rtas_data_buf, 0, RTAS_DATA_BUF_SIZE); | |
868 | call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, | |
869 | NULL, | |
870 | CMO_CHARACTERISTICS_TOKEN, | |
871 | __pa(rtas_data_buf), | |
872 | RTAS_DATA_BUF_SIZE); | |
873 | ||
874 | if (call_status != 0) { | |
875 | spin_unlock(&rtas_data_buf_lock); | |
876 | pr_debug("CMO not available\n"); | |
877 | pr_debug(" <- fw_cmo_feature_init()\n"); | |
878 | return; | |
879 | } | |
880 | ||
881 | end = rtas_data_buf + CMO_MAXLENGTH - 2; | |
882 | ptr = rtas_data_buf + 2; /* step over strlen value */ | |
883 | key = value = ptr; | |
884 | ||
885 | while (*ptr && (ptr <= end)) { | |
886 | /* Separate the key and value by replacing '=' with '\0' and | |
887 | * point the value at the string after the '=' | |
888 | */ | |
889 | if (ptr[0] == '=') { | |
890 | ptr[0] = '\0'; | |
891 | value = ptr + 1; | |
892 | } else if (ptr[0] == '\0' || ptr[0] == ',') { | |
893 | /* Terminate the string containing the key/value pair */ | |
894 | ptr[0] = '\0'; | |
895 | ||
896 | if (key == value) { | |
897 | pr_debug("Malformed key/value pair\n"); | |
898 | /* Never found a '=', end processing */ | |
899 | break; | |
900 | } | |
901 | ||
81f14997 RJ |
902 | if (0 == strcmp(key, "CMOPageSize")) |
903 | page_order = simple_strtol(value, NULL, 10); | |
904 | else if (0 == strcmp(key, "PrPSP")) | |
905 | CMO_PrPSP = simple_strtol(value, NULL, 10); | |
e46de429 | 906 | else if (0 == strcmp(key, "SecPSP")) |
81f14997 | 907 | CMO_SecPSP = simple_strtol(value, NULL, 10); |
e46de429 RJ |
908 | value = key = ptr + 1; |
909 | } | |
910 | ptr++; | |
911 | } | |
912 | ||
81f14997 RJ |
913 | /* Page size is returned as the power of 2 of the page size, |
914 | * convert to the page size in bytes before returning | |
915 | */ | |
916 | CMO_PageSize = 1 << page_order; | |
917 | pr_debug("CMO_PageSize = %lu\n", CMO_PageSize); | |
918 | ||
919 | if (CMO_PrPSP != -1 || CMO_SecPSP != -1) { | |
e46de429 | 920 | pr_info("CMO enabled\n"); |
81f14997 RJ |
921 | pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP, |
922 | CMO_SecPSP); | |
e46de429 | 923 | powerpc_firmware_features |= FW_FEATURE_CMO; |
9ee820fa | 924 | pSeries_coalesce_init(); |
e46de429 | 925 | } else |
81f14997 RJ |
926 | pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP, |
927 | CMO_SecPSP); | |
e46de429 RJ |
928 | spin_unlock(&rtas_data_buf_lock); |
929 | pr_debug(" <- fw_cmo_feature_init()\n"); | |
930 | } | |
931 | ||
1da177e4 LT |
932 | /* |
933 | * Early initialization. Relocation is on but do not reference unbolted pages | |
934 | */ | |
f2d57694 | 935 | static void __init pseries_init(void) |
1da177e4 | 936 | { |
f2d57694 | 937 | pr_debug(" -> pseries_init()\n"); |
1da177e4 | 938 | |
4d2bb3f5 | 939 | #ifdef CONFIG_HVC_CONSOLE |
57cfb814 | 940 | if (firmware_has_feature(FW_FEATURE_LPAR)) |
4d2bb3f5 BH |
941 | hvc_vio_init_early(); |
942 | #endif | |
06c88766 | 943 | if (firmware_has_feature(FW_FEATURE_XDABR)) |
76032de8 | 944 | ppc_md.set_dabr = pseries_set_xdabr; |
06c88766 MN |
945 | else if (firmware_has_feature(FW_FEATURE_DABR)) |
946 | ppc_md.set_dabr = pseries_set_dabr; | |
1da177e4 | 947 | |
bf99de36 MN |
948 | if (firmware_has_feature(FW_FEATURE_SET_MODE)) |
949 | ppc_md.set_dawr = pseries_set_dawr; | |
950 | ||
e46de429 | 951 | pSeries_cmo_feature_init(); |
1da177e4 LT |
952 | iommu_init_early_pSeries(); |
953 | ||
f2d57694 | 954 | pr_debug(" <- pseries_init()\n"); |
1da177e4 LT |
955 | } |
956 | ||
9178ba29 AG |
957 | /** |
958 | * pseries_power_off - tell firmware about how to power off the system. | |
959 | * | |
960 | * This function calls either the power-off rtas token in normal cases | |
961 | * or the ibm,power-off-ups token (if present & requested) in case of | |
962 | * a power failure. If power-off token is used, power on will only be | |
963 | * possible with power button press. If ibm,power-off-ups token is used | |
964 | * it will allow auto poweron after power is restored. | |
965 | */ | |
966 | static void pseries_power_off(void) | |
967 | { | |
968 | int rc; | |
969 | int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups"); | |
970 | ||
971 | if (rtas_flash_term_hook) | |
972 | rtas_flash_term_hook(SYS_POWER_OFF); | |
973 | ||
974 | if (rtas_poweron_auto == 0 || | |
975 | rtas_poweroff_ups_token == RTAS_UNKNOWN_SERVICE) { | |
976 | rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1); | |
977 | printk(KERN_INFO "RTAS power-off returned %d\n", rc); | |
978 | } else { | |
979 | rc = rtas_call(rtas_poweroff_ups_token, 0, 1, NULL); | |
980 | printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc); | |
981 | } | |
982 | for (;;); | |
983 | } | |
984 | ||
e8222502 BH |
985 | static int __init pSeries_probe(void) |
986 | { | |
e5480bdc | 987 | if (!of_node_is_type(of_root, "chrp")) |
1da177e4 LT |
988 | return 0; |
989 | ||
133dda1e AB |
990 | /* Cell blades firmware claims to be chrp while it's not. Until this |
991 | * is fixed, we need to avoid those here. | |
992 | */ | |
406b0b6a BH |
993 | if (of_machine_is_compatible("IBM,CPBW-1.0") || |
994 | of_machine_is_compatible("IBM,CBEA")) | |
133dda1e AB |
995 | return 0; |
996 | ||
9178ba29 AG |
997 | pm_power_off = pseries_power_off; |
998 | ||
f7ebf352 ME |
999 | pr_debug("Machine is%s LPAR !\n", |
1000 | (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not"); | |
57cfb814 | 1001 | |
f2d57694 BH |
1002 | pseries_init(); |
1003 | ||
1da177e4 LT |
1004 | return 1; |
1005 | } | |
1006 | ||
4267292b PM |
1007 | static int pSeries_pci_probe_mode(struct pci_bus *bus) |
1008 | { | |
57cfb814 | 1009 | if (firmware_has_feature(FW_FEATURE_LPAR)) |
4267292b PM |
1010 | return PCI_PROBE_DEVTREE; |
1011 | return PCI_PROBE_NORMAL; | |
1012 | } | |
1013 | ||
38ae9ec4 DA |
1014 | struct pci_controller_ops pseries_pci_controller_ops = { |
1015 | .probe_mode = pSeries_pci_probe_mode, | |
1016 | }; | |
1017 | ||
e8222502 BH |
1018 | define_machine(pseries) { |
1019 | .name = "pSeries", | |
1da177e4 LT |
1020 | .probe = pSeries_probe, |
1021 | .setup_arch = pSeries_setup_arch, | |
e7da5dac | 1022 | .init_IRQ = pseries_init_irq, |
0dd194d0 | 1023 | .show_cpuinfo = pSeries_show_cpuinfo, |
1da177e4 LT |
1024 | .log_error = pSeries_log_error, |
1025 | .pcibios_fixup = pSeries_final_fixup, | |
f4fcbbe9 | 1026 | .restart = rtas_restart, |
f4fcbbe9 | 1027 | .halt = rtas_halt, |
35adacd6 | 1028 | .panic = pseries_panic, |
773bf9c4 AB |
1029 | .get_boot_time = rtas_get_boot_time, |
1030 | .get_rtc_time = rtas_get_rtc_time, | |
1031 | .set_rtc_time = rtas_set_rtc_time, | |
10f7e7c1 | 1032 | .calibrate_decr = generic_calibrate_decr, |
6566c6f1 | 1033 | .progress = rtas_progress, |
1da177e4 | 1034 | .system_reset_exception = pSeries_system_reset_exception, |
a43c1590 | 1035 | .machine_check_early = pseries_machine_check_realmode, |
1da177e4 | 1036 | .machine_check_exception = pSeries_machine_check_exception, |
da665885 | 1037 | #ifdef CONFIG_KEXEC_CORE |
cedddd81 | 1038 | .machine_kexec = pSeries_machine_kexec, |
d739d2ca | 1039 | .kexec_cpu_down = pseries_kexec_cpu_down, |
cedddd81 | 1040 | #endif |
a5d86257 AB |
1041 | #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE |
1042 | .memory_block_size = pseries_memory_block_size, | |
1043 | #endif | |
1da177e4 | 1044 | }; |