2 * 64-bit pSeries and RS/6000 setup code.
4 * Copyright (C) 1995 Linus Torvalds
5 * Adapted from 'alpha' version by Gary Thomas
6 * Modified by Cort Dougan (cort@cs.nmt.edu)
7 * Modified by PPC64 Team, IBM Corp
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
16 * bootup setup stuff..
19 #include <linux/cpu.h>
20 #include <linux/errno.h>
21 #include <linux/sched.h>
22 #include <linux/kernel.h>
24 #include <linux/stddef.h>
25 #include <linux/unistd.h>
26 #include <linux/user.h>
27 #include <linux/tty.h>
28 #include <linux/major.h>
29 #include <linux/interrupt.h>
30 #include <linux/reboot.h>
31 #include <linux/init.h>
32 #include <linux/ioport.h>
33 #include <linux/console.h>
34 #include <linux/pci.h>
35 #include <linux/utsname.h>
36 #include <linux/adb.h>
37 #include <linux/export.h>
38 #include <linux/delay.h>
39 #include <linux/irq.h>
40 #include <linux/seq_file.h>
41 #include <linux/root_dev.h>
43 #include <linux/of_pci.h>
46 #include <asm/processor.h>
48 #include <asm/pgtable.h>
51 #include <asm/pci-bridge.h>
52 #include <asm/iommu.h>
54 #include <asm/machdep.h>
57 #include <asm/nvram.h>
60 #include <asm/ppc-pci.h>
61 #include <asm/i8259.h>
64 #include <asm/firmware.h>
67 #include <asm/plpar_wrappers.h>
68 #include <asm/kexec.h>
69 #include <asm/isa-bridge.h>
70 #include <asm/security_features.h>
76 unsigned long CMO_PageSize
= (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K
);
77 EXPORT_SYMBOL(CMO_PageSize
);
79 int fwnmi_active
; /* TRUE if an FWNMI handler is present */
81 static void pSeries_show_cpuinfo(struct seq_file
*m
)
83 struct device_node
*root
;
84 const char *model
= "";
86 root
= of_find_node_by_path("/");
88 model
= of_get_property(root
, "model", NULL
);
89 seq_printf(m
, "machine\t\t: CHRP %s\n", model
);
92 seq_printf(m
, "MMU\t\t: Radix\n");
94 seq_printf(m
, "MMU\t\t: Hash\n");
97 /* Initialize firmware assisted non-maskable interrupts if
98 * the firmware supports this feature.
100 static void __init
fwnmi_init(void)
102 unsigned long system_reset_addr
, machine_check_addr
;
104 int ibm_nmi_register
= rtas_token("ibm,nmi-register");
105 if (ibm_nmi_register
== RTAS_UNKNOWN_SERVICE
)
108 /* If the kernel's not linked at zero we point the firmware at low
109 * addresses anyway, and use a trampoline to get to the real code. */
110 system_reset_addr
= __pa(system_reset_fwnmi
) - PHYSICAL_START
;
111 machine_check_addr
= __pa(machine_check_fwnmi
) - PHYSICAL_START
;
113 if (0 == rtas_call(ibm_nmi_register
, 2, 1, NULL
, system_reset_addr
,
118 static void pseries_8259_cascade(struct irq_desc
*desc
)
120 struct irq_chip
*chip
= irq_desc_get_chip(desc
);
121 unsigned int cascade_irq
= i8259_irq();
124 generic_handle_irq(cascade_irq
);
126 chip
->irq_eoi(&desc
->irq_data
);
129 static void __init
pseries_setup_i8259_cascade(void)
131 struct device_node
*np
, *old
, *found
= NULL
;
132 unsigned int cascade
;
134 unsigned long intack
= 0;
137 for_each_node_by_type(np
, "interrupt-controller") {
138 if (of_device_is_compatible(np
, "chrp,iic")) {
145 printk(KERN_DEBUG
"pic: no ISA interrupt controller\n");
149 cascade
= irq_of_parse_and_map(found
, 0);
151 printk(KERN_ERR
"pic: failed to map cascade interrupt");
154 pr_debug("pic: cascade mapped to irq %d\n", cascade
);
156 for (old
= of_node_get(found
); old
!= NULL
; old
= np
) {
157 np
= of_get_parent(old
);
161 if (strcmp(np
->name
, "pci") != 0)
163 addrp
= of_get_property(np
, "8259-interrupt-acknowledge", NULL
);
166 naddr
= of_n_addr_cells(np
);
167 intack
= addrp
[naddr
-1];
169 intack
|= ((unsigned long)addrp
[naddr
-2]) << 32;
172 printk(KERN_DEBUG
"pic: PCI 8259 intack at 0x%016lx\n", intack
);
173 i8259_init(found
, intack
);
175 irq_set_chained_handler(cascade
, pseries_8259_cascade
);
178 static void __init
pseries_init_irq(void)
181 pseries_setup_i8259_cascade();
184 static void pseries_lpar_enable_pmcs(void)
186 unsigned long set
, reset
;
190 plpar_hcall_norets(H_PERFMON
, set
, reset
);
193 static int pci_dn_reconfig_notifier(struct notifier_block
*nb
, unsigned long action
, void *data
)
195 struct of_reconfig_data
*rd
= data
;
196 struct device_node
*parent
, *np
= rd
->dn
;
201 case OF_RECONFIG_ATTACH_NODE
:
202 parent
= of_get_parent(np
);
203 pdn
= parent
? PCI_DN(parent
) : NULL
;
205 pci_add_device_node_info(pdn
->phb
, np
);
209 case OF_RECONFIG_DETACH_NODE
:
212 list_del(&pdn
->list
);
221 static struct notifier_block pci_dn_reconfig_nb
= {
222 .notifier_call
= pci_dn_reconfig_notifier
,
225 struct kmem_cache
*dtl_cache
;
227 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
229 * Allocate space for the dispatch trace log for all possible cpus
230 * and register the buffers with the hypervisor. This is used for
231 * computing time stolen by the hypervisor.
233 static int alloc_dispatch_logs(void)
236 struct paca_struct
*pp
;
237 struct dtl_entry
*dtl
;
239 if (!firmware_has_feature(FW_FEATURE_SPLPAR
))
245 for_each_possible_cpu(cpu
) {
247 dtl
= kmem_cache_alloc(dtl_cache
, GFP_KERNEL
);
249 pr_warn("Failed to allocate dispatch trace log for cpu %d\n",
251 pr_warn("Stolen time statistics will be unreliable\n");
256 pp
->dispatch_log
= dtl
;
257 pp
->dispatch_log_end
= dtl
+ N_DISPATCH_LOG
;
261 /* Register the DTL for the current (boot) cpu */
262 dtl
= get_paca()->dispatch_log
;
263 get_paca()->dtl_ridx
= 0;
264 get_paca()->dtl_curr
= dtl
;
265 get_paca()->lppaca_ptr
->dtl_idx
= 0;
267 /* hypervisor reads buffer length from this field */
268 dtl
->enqueue_to_dispatch_time
= cpu_to_be32(DISPATCH_LOG_BYTES
);
269 ret
= register_dtl(hard_smp_processor_id(), __pa(dtl
));
271 pr_err("WARNING: DTL registration of cpu %d (hw %d) failed "
272 "with %d\n", smp_processor_id(),
273 hard_smp_processor_id(), ret
);
274 get_paca()->lppaca_ptr
->dtl_enable_mask
= 2;
278 #else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
279 static inline int alloc_dispatch_logs(void)
283 #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
285 static int alloc_dispatch_log_kmem_cache(void)
287 dtl_cache
= kmem_cache_create("dtl", DISPATCH_LOG_BYTES
,
288 DISPATCH_LOG_BYTES
, 0, NULL
);
290 pr_warn("Failed to create dispatch trace log buffer cache\n");
291 pr_warn("Stolen time statistics will be unreliable\n");
295 return alloc_dispatch_logs();
297 machine_early_initcall(pseries
, alloc_dispatch_log_kmem_cache
);
299 static void pseries_lpar_idle(void)
302 * Default handler to go into low thread priority and possibly
303 * low power mode by ceding processor to hypervisor
306 /* Indicate to hypervisor that we are idle. */
307 get_lppaca()->idle
= 1;
310 * Yield the processor to the hypervisor. We return if
311 * an external interrupt occurs (which are driven prior
312 * to returning here) or if a prod occurs from another
313 * processor. When returning here, external interrupts
318 get_lppaca()->idle
= 0;
322 * Enable relocation on during exceptions. This has partition wide scope and
323 * may take a while to complete, if it takes longer than one second we will
324 * just give up rather than wasting any more time on this - if that turns out
325 * to ever be a problem in practice we can move this into a kernel thread to
326 * finish off the process later in boot.
328 void pseries_enable_reloc_on_exc(void)
331 unsigned int delay
, total_delay
= 0;
334 rc
= enable_reloc_on_exceptions();
335 if (!H_IS_LONG_BUSY(rc
)) {
337 pr_info("Relocation on exceptions not"
339 } else if (rc
!= H_SUCCESS
) {
340 pr_warn("Unable to enable relocation"
341 " on exceptions: %ld\n", rc
);
346 delay
= get_longbusy_msecs(rc
);
347 total_delay
+= delay
;
348 if (total_delay
> 1000) {
349 pr_warn("Warning: Giving up waiting to enable "
350 "relocation on exceptions (%u msec)!\n",
358 EXPORT_SYMBOL(pseries_enable_reloc_on_exc
);
360 void pseries_disable_reloc_on_exc(void)
365 rc
= disable_reloc_on_exceptions();
366 if (!H_IS_LONG_BUSY(rc
))
368 mdelay(get_longbusy_msecs(rc
));
371 pr_warning("Warning: Failed to disable relocation on "
372 "exceptions: %ld\n", rc
);
374 EXPORT_SYMBOL(pseries_disable_reloc_on_exc
);
376 #ifdef CONFIG_KEXEC_CORE
377 static void pSeries_machine_kexec(struct kimage
*image
)
379 if (firmware_has_feature(FW_FEATURE_SET_MODE
))
380 pseries_disable_reloc_on_exc();
382 default_machine_kexec(image
);
386 #ifdef __LITTLE_ENDIAN__
387 void pseries_big_endian_exceptions(void)
392 rc
= enable_big_endian_exceptions();
393 if (!H_IS_LONG_BUSY(rc
))
395 mdelay(get_longbusy_msecs(rc
));
399 * At this point it is unlikely panic() will get anything
400 * out to the user, since this is called very late in kexec
401 * but at least this will stop us from continuing on further
402 * and creating an even more difficult to debug situation.
404 * There is a known problem when kdump'ing, if cpus are offline
405 * the above call will fail. Rather than panicking again, keep
406 * going and hope the kdump kernel is also little endian, which
409 if (rc
&& !kdump_in_progress())
410 panic("Could not enable big endian exceptions");
413 void pseries_little_endian_exceptions(void)
418 rc
= enable_little_endian_exceptions();
419 if (!H_IS_LONG_BUSY(rc
))
421 mdelay(get_longbusy_msecs(rc
));
424 ppc_md
.progress("H_SET_MODE LE exception fail", 0);
425 panic("Could not enable little endian exceptions");
430 static void __init
find_and_init_phbs(void)
432 struct device_node
*node
;
433 struct pci_controller
*phb
;
434 struct device_node
*root
= of_find_node_by_path("/");
436 for_each_child_of_node(root
, node
) {
437 if (node
->type
== NULL
|| (strcmp(node
->type
, "pci") != 0 &&
438 strcmp(node
->type
, "pciex") != 0))
441 phb
= pcibios_alloc_controller(node
);
445 pci_process_bridge_OF_ranges(phb
, node
, 0);
446 isa_bridge_find_early(phb
);
447 phb
->controller_ops
= pseries_pci_controller_ops
;
453 * PCI_PROBE_ONLY and PCI_REASSIGN_ALL_BUS can be set via properties
456 of_pci_check_probe_only();
459 static void init_cpu_char_feature_flags(struct h_cpu_char_result
*result
)
461 if (result
->character
& H_CPU_CHAR_SPEC_BAR_ORI31
)
462 security_ftr_set(SEC_FTR_SPEC_BAR_ORI31
);
464 if (result
->character
& H_CPU_CHAR_BCCTRL_SERIALISED
)
465 security_ftr_set(SEC_FTR_BCCTRL_SERIALISED
);
467 if (result
->character
& H_CPU_CHAR_L1D_FLUSH_ORI30
)
468 security_ftr_set(SEC_FTR_L1D_FLUSH_ORI30
);
470 if (result
->character
& H_CPU_CHAR_L1D_FLUSH_TRIG2
)
471 security_ftr_set(SEC_FTR_L1D_FLUSH_TRIG2
);
473 if (result
->character
& H_CPU_CHAR_L1D_THREAD_PRIV
)
474 security_ftr_set(SEC_FTR_L1D_THREAD_PRIV
);
476 if (result
->character
& H_CPU_CHAR_COUNT_CACHE_DISABLED
)
477 security_ftr_set(SEC_FTR_COUNT_CACHE_DISABLED
);
480 * The features below are enabled by default, so we instead look to see
481 * if firmware has *disabled* them, and clear them if so.
483 if (!(result
->behaviour
& H_CPU_BEHAV_FAVOUR_SECURITY
))
484 security_ftr_clear(SEC_FTR_FAVOUR_SECURITY
);
486 if (!(result
->behaviour
& H_CPU_BEHAV_L1D_FLUSH_PR
))
487 security_ftr_clear(SEC_FTR_L1D_FLUSH_PR
);
489 if (!(result
->behaviour
& H_CPU_BEHAV_BNDS_CHK_SPEC_BAR
))
490 security_ftr_clear(SEC_FTR_BNDS_CHK_SPEC_BAR
);
493 static void pseries_setup_rfi_flush(void)
495 struct h_cpu_char_result result
;
496 enum l1d_flush_type types
;
500 rc
= plpar_get_cpu_characteristics(&result
);
502 init_cpu_char_feature_flags(&result
);
505 * We're the guest so this doesn't apply to us, clear it to simplify
506 * handling of it elsewhere.
508 security_ftr_clear(SEC_FTR_L1D_FLUSH_HV
);
510 types
= L1D_FLUSH_FALLBACK
;
512 if (security_ftr_enabled(SEC_FTR_L1D_FLUSH_TRIG2
))
513 types
|= L1D_FLUSH_MTTRIG
;
515 if (security_ftr_enabled(SEC_FTR_L1D_FLUSH_ORI30
))
516 types
|= L1D_FLUSH_ORI
;
518 enable
= security_ftr_enabled(SEC_FTR_FAVOUR_SECURITY
) && \
519 security_ftr_enabled(SEC_FTR_L1D_FLUSH_PR
);
521 setup_rfi_flush(types
, enable
);
524 static void __init
pSeries_setup_arch(void)
526 set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT
);
528 /* Discover PIC type and setup ppc_md accordingly */
532 /* openpic global configuration register (64-bit format). */
533 /* openpic Interrupt Source Unit pointer (64-bit format). */
534 /* python0 facility area (mmio) (64-bit format) REAL address. */
536 /* init to some ~sane value until calibrate_delay() runs */
537 loops_per_jiffy
= 50000000;
541 pseries_setup_rfi_flush();
543 /* By default, only probe PCI (can be overridden by rtas_pci) */
544 pci_add_flags(PCI_PROBE_ONLY
);
546 /* Find and initialize PCI host bridges */
547 init_pci_config_tokens();
548 find_and_init_phbs();
549 of_reconfig_notifier_register(&pci_dn_reconfig_nb
);
551 pSeries_nvram_init();
553 if (firmware_has_feature(FW_FEATURE_LPAR
)) {
554 vpa_init(boot_cpuid
);
555 ppc_md
.power_save
= pseries_lpar_idle
;
556 ppc_md
.enable_pmcs
= pseries_lpar_enable_pmcs
;
558 /* No special idle routine */
559 ppc_md
.enable_pmcs
= power4_enable_pmcs
;
562 ppc_md
.pcibios_root_bridge_prepare
= pseries_root_bridge_prepare
;
565 static int __init
pSeries_init_panel(void)
567 /* Manually leave the kernel version on the panel. */
568 #ifdef __BIG_ENDIAN__
569 ppc_md
.progress("Linux ppc64\n", 0);
571 ppc_md
.progress("Linux ppc64le\n", 0);
573 ppc_md
.progress(init_utsname()->version
, 0);
577 machine_arch_initcall(pseries
, pSeries_init_panel
);
579 static int pseries_set_dabr(unsigned long dabr
, unsigned long dabrx
)
581 return plpar_hcall_norets(H_SET_DABR
, dabr
);
584 static int pseries_set_xdabr(unsigned long dabr
, unsigned long dabrx
)
586 /* Have to set at least one bit in the DABRX according to PAPR */
587 if (dabrx
== 0 && dabr
== 0)
589 /* PAPR says we can only set kernel and user bits */
590 dabrx
&= DABRX_KERNEL
| DABRX_USER
;
592 return plpar_hcall_norets(H_SET_XDABR
, dabr
, dabrx
);
595 static int pseries_set_dawr(unsigned long dawr
, unsigned long dawrx
)
597 /* PAPR says we can't set HYP */
600 return plapr_set_watchpoint0(dawr
, dawrx
);
603 #define CMO_CHARACTERISTICS_TOKEN 44
604 #define CMO_MAXLENGTH 1026
606 void pSeries_coalesce_init(void)
608 struct hvcall_mpp_x_data mpp_x_data
;
610 if (firmware_has_feature(FW_FEATURE_CMO
) && !h_get_mpp_x(&mpp_x_data
))
611 powerpc_firmware_features
|= FW_FEATURE_XCMO
;
613 powerpc_firmware_features
&= ~FW_FEATURE_XCMO
;
617 * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
618 * handle that here. (Stolen from parse_system_parameter_string)
620 static void pSeries_cmo_feature_init(void)
622 char *ptr
, *key
, *value
, *end
;
624 int page_order
= IOMMU_PAGE_SHIFT_4K
;
626 pr_debug(" -> fw_cmo_feature_init()\n");
627 spin_lock(&rtas_data_buf_lock
);
628 memset(rtas_data_buf
, 0, RTAS_DATA_BUF_SIZE
);
629 call_status
= rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
631 CMO_CHARACTERISTICS_TOKEN
,
635 if (call_status
!= 0) {
636 spin_unlock(&rtas_data_buf_lock
);
637 pr_debug("CMO not available\n");
638 pr_debug(" <- fw_cmo_feature_init()\n");
642 end
= rtas_data_buf
+ CMO_MAXLENGTH
- 2;
643 ptr
= rtas_data_buf
+ 2; /* step over strlen value */
646 while (*ptr
&& (ptr
<= end
)) {
647 /* Separate the key and value by replacing '=' with '\0' and
648 * point the value at the string after the '='
653 } else if (ptr
[0] == '\0' || ptr
[0] == ',') {
654 /* Terminate the string containing the key/value pair */
658 pr_debug("Malformed key/value pair\n");
659 /* Never found a '=', end processing */
663 if (0 == strcmp(key
, "CMOPageSize"))
664 page_order
= simple_strtol(value
, NULL
, 10);
665 else if (0 == strcmp(key
, "PrPSP"))
666 CMO_PrPSP
= simple_strtol(value
, NULL
, 10);
667 else if (0 == strcmp(key
, "SecPSP"))
668 CMO_SecPSP
= simple_strtol(value
, NULL
, 10);
669 value
= key
= ptr
+ 1;
674 /* Page size is returned as the power of 2 of the page size,
675 * convert to the page size in bytes before returning
677 CMO_PageSize
= 1 << page_order
;
678 pr_debug("CMO_PageSize = %lu\n", CMO_PageSize
);
680 if (CMO_PrPSP
!= -1 || CMO_SecPSP
!= -1) {
681 pr_info("CMO enabled\n");
682 pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP
,
684 powerpc_firmware_features
|= FW_FEATURE_CMO
;
685 pSeries_coalesce_init();
687 pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP
,
689 spin_unlock(&rtas_data_buf_lock
);
690 pr_debug(" <- fw_cmo_feature_init()\n");
694 * Early initialization. Relocation is on but do not reference unbolted pages
696 static void __init
pseries_init(void)
698 pr_debug(" -> pseries_init()\n");
700 #ifdef CONFIG_HVC_CONSOLE
701 if (firmware_has_feature(FW_FEATURE_LPAR
))
702 hvc_vio_init_early();
704 if (firmware_has_feature(FW_FEATURE_XDABR
))
705 ppc_md
.set_dabr
= pseries_set_xdabr
;
706 else if (firmware_has_feature(FW_FEATURE_DABR
))
707 ppc_md
.set_dabr
= pseries_set_dabr
;
709 if (firmware_has_feature(FW_FEATURE_SET_MODE
))
710 ppc_md
.set_dawr
= pseries_set_dawr
;
712 pSeries_cmo_feature_init();
713 iommu_init_early_pSeries();
715 pr_debug(" <- pseries_init()\n");
719 * pseries_power_off - tell firmware about how to power off the system.
721 * This function calls either the power-off rtas token in normal cases
722 * or the ibm,power-off-ups token (if present & requested) in case of
723 * a power failure. If power-off token is used, power on will only be
724 * possible with power button press. If ibm,power-off-ups token is used
725 * it will allow auto poweron after power is restored.
727 static void pseries_power_off(void)
730 int rtas_poweroff_ups_token
= rtas_token("ibm,power-off-ups");
732 if (rtas_flash_term_hook
)
733 rtas_flash_term_hook(SYS_POWER_OFF
);
735 if (rtas_poweron_auto
== 0 ||
736 rtas_poweroff_ups_token
== RTAS_UNKNOWN_SERVICE
) {
737 rc
= rtas_call(rtas_token("power-off"), 2, 1, NULL
, -1, -1);
738 printk(KERN_INFO
"RTAS power-off returned %d\n", rc
);
740 rc
= rtas_call(rtas_poweroff_ups_token
, 0, 1, NULL
);
741 printk(KERN_INFO
"RTAS ibm,power-off-ups returned %d\n", rc
);
746 static int __init
pSeries_probe(void)
748 const char *dtype
= of_get_property(of_root
, "device_type", NULL
);
752 if (strcmp(dtype
, "chrp"))
755 /* Cell blades firmware claims to be chrp while it's not. Until this
756 * is fixed, we need to avoid those here.
758 if (of_machine_is_compatible("IBM,CPBW-1.0") ||
759 of_machine_is_compatible("IBM,CBEA"))
762 pm_power_off
= pseries_power_off
;
764 pr_debug("Machine is%s LPAR !\n",
765 (powerpc_firmware_features
& FW_FEATURE_LPAR
) ? "" : " not");
772 static int pSeries_pci_probe_mode(struct pci_bus
*bus
)
774 if (firmware_has_feature(FW_FEATURE_LPAR
))
775 return PCI_PROBE_DEVTREE
;
776 return PCI_PROBE_NORMAL
;
779 struct pci_controller_ops pseries_pci_controller_ops
= {
780 .probe_mode
= pSeries_pci_probe_mode
,
783 define_machine(pseries
) {
785 .probe
= pSeries_probe
,
786 .setup_arch
= pSeries_setup_arch
,
787 .init_IRQ
= pseries_init_irq
,
788 .show_cpuinfo
= pSeries_show_cpuinfo
,
789 .log_error
= pSeries_log_error
,
790 .pcibios_fixup
= pSeries_final_fixup
,
791 .restart
= rtas_restart
,
793 .get_boot_time
= rtas_get_boot_time
,
794 .get_rtc_time
= rtas_get_rtc_time
,
795 .set_rtc_time
= rtas_set_rtc_time
,
796 .calibrate_decr
= generic_calibrate_decr
,
797 .progress
= rtas_progress
,
798 .system_reset_exception
= pSeries_system_reset_exception
,
799 .machine_check_exception
= pSeries_machine_check_exception
,
800 #ifdef CONFIG_KEXEC_CORE
801 .machine_kexec
= pSeries_machine_kexec
,
802 .kexec_cpu_down
= pseries_kexec_cpu_down
,
804 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
805 .memory_block_size
= pseries_memory_block_size
,