2 * arch/s390/kernel/setup.c
5 * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Hartmut Penner (hp@de.ibm.com),
7 * Martin Schwidefsky (schwidefsky@de.ibm.com)
9 * Derived from "arch/i386/kernel/setup.c"
10 * Copyright (C) 1995, Linus Torvalds
14 * This file handles the architecture-dependent parts of initialization
17 #include <linux/errno.h>
18 #include <linux/module.h>
19 #include <linux/sched.h>
20 #include <linux/kernel.h>
22 #include <linux/stddef.h>
23 #include <linux/unistd.h>
24 #include <linux/ptrace.h>
25 #include <linux/slab.h>
26 #include <linux/user.h>
27 #include <linux/a.out.h>
28 #include <linux/tty.h>
29 #include <linux/ioport.h>
30 #include <linux/delay.h>
31 #include <linux/config.h>
32 #include <linux/init.h>
33 #include <linux/initrd.h>
34 #include <linux/bootmem.h>
35 #include <linux/root_dev.h>
36 #include <linux/console.h>
37 #include <linux/seq_file.h>
38 #include <linux/kernel_stat.h>
39 #include <linux/device.h>
40 #include <linux/notifier.h>
42 #include <asm/uaccess.h>
43 #include <asm/system.h>
45 #include <asm/mmu_context.h>
46 #include <asm/cpcmd.h>
47 #include <asm/lowcore.h>
50 #include <asm/ptrace.h>
51 #include <asm/sections.h>
56 unsigned int console_mode
= 0;
57 unsigned int console_devno
= -1;
58 unsigned int console_irq
= -1;
59 unsigned long memory_size
= 0;
60 unsigned long machine_flags
= 0;
62 unsigned long addr
, size
, type
;
63 } memory_chunk
[MEMORY_CHUNKS
] = { { 0 } };
64 #define CHUNK_READ_WRITE 0
65 #define CHUNK_READ_ONLY 1
66 volatile int __cpu_logical_map
[NR_CPUS
]; /* logical cpu to cpu address */
67 unsigned long __initdata zholes_size
[MAX_NR_ZONES
];
68 static unsigned long __initdata memory_end
;
71 * This is set up by the setup-routine at boot-time
72 * for S390 need to find out, what we have to setup
73 * using address 0x10400 ...
76 #include <asm/setup.h>
78 static struct resource code_resource
= {
79 .name
= "Kernel code",
80 .flags
= IORESOURCE_BUSY
| IORESOURCE_MEM
,
83 static struct resource data_resource
= {
84 .name
= "Kernel data",
85 .flags
= IORESOURCE_BUSY
| IORESOURCE_MEM
,
89 * cpu_init() initializes state that is per-CPU.
91 void __devinit
cpu_init (void)
93 int addr
= hard_smp_processor_id();
96 * Store processor id in lowcore (used e.g. in timer_interrupt)
98 asm volatile ("stidp %0": "=m" (S390_lowcore
.cpu_data
.cpu_id
));
99 S390_lowcore
.cpu_data
.cpu_addr
= addr
;
102 * Force FPU initialization:
104 clear_thread_flag(TIF_USEDFPU
);
107 atomic_inc(&init_mm
.mm_count
);
108 current
->active_mm
= &init_mm
;
111 enter_lazy_tlb(&init_mm
, current
);
115 * VM halt and poweroff setup routines
117 char vmhalt_cmd
[128] = "";
118 char vmpoff_cmd
[128] = "";
119 char vmpanic_cmd
[128] = "";
121 static inline void strncpy_skip_quote(char *dst
, char *src
, int n
)
126 for (sx
= 0; src
[sx
] != 0; sx
++) {
127 if (src
[sx
] == '"') continue;
133 static int __init
vmhalt_setup(char *str
)
135 strncpy_skip_quote(vmhalt_cmd
, str
, 127);
140 __setup("vmhalt=", vmhalt_setup
);
142 static int __init
vmpoff_setup(char *str
)
144 strncpy_skip_quote(vmpoff_cmd
, str
, 127);
149 __setup("vmpoff=", vmpoff_setup
);
151 static int vmpanic_notify(struct notifier_block
*self
, unsigned long event
,
154 if (MACHINE_IS_VM
&& strlen(vmpanic_cmd
) > 0)
155 cpcmd(vmpanic_cmd
, NULL
, 0, NULL
);
160 #define PANIC_PRI_VMPANIC 0
162 static struct notifier_block vmpanic_nb
= {
163 .notifier_call
= vmpanic_notify
,
164 .priority
= PANIC_PRI_VMPANIC
167 static int __init
vmpanic_setup(char *str
)
169 static int register_done __initdata
= 0;
171 strncpy_skip_quote(vmpanic_cmd
, str
, 127);
172 vmpanic_cmd
[127] = 0;
173 if (!register_done
) {
175 atomic_notifier_chain_register(&panic_notifier_list
,
181 __setup("vmpanic=", vmpanic_setup
);
184 * condev= and conmode= setup parameter.
187 static int __init
condev_setup(char *str
)
191 vdev
= simple_strtoul(str
, &str
, 0);
192 if (vdev
>= 0 && vdev
< 65536) {
193 console_devno
= vdev
;
199 __setup("condev=", condev_setup
);
201 static int __init
conmode_setup(char *str
)
203 #if defined(CONFIG_SCLP_CONSOLE)
204 if (strncmp(str
, "hwc", 4) == 0 || strncmp(str
, "sclp", 5) == 0)
207 #if defined(CONFIG_TN3215_CONSOLE)
208 if (strncmp(str
, "3215", 5) == 0)
211 #if defined(CONFIG_TN3270_CONSOLE)
212 if (strncmp(str
, "3270", 5) == 0)
218 __setup("conmode=", conmode_setup
);
220 static void __init
conmode_default(void)
222 char query_buffer
[1024];
226 __cpcmd("QUERY CONSOLE", query_buffer
, 1024, NULL
);
227 console_devno
= simple_strtoul(query_buffer
+ 5, NULL
, 16);
228 ptr
= strstr(query_buffer
, "SUBCHANNEL =");
229 console_irq
= simple_strtoul(ptr
+ 13, NULL
, 16);
230 __cpcmd("QUERY TERM", query_buffer
, 1024, NULL
);
231 ptr
= strstr(query_buffer
, "CONMODE");
233 * Set the conmode to 3215 so that the device recognition
234 * will set the cu_type of the console to 3215. If the
235 * conmode is 3270 and we don't set it back then both
236 * 3215 and the 3270 driver will try to access the console
237 * device (3215 as console and 3270 as normal tty).
239 __cpcmd("TERM CONMODE 3215", NULL
, 0, NULL
);
241 #if defined(CONFIG_SCLP_CONSOLE)
246 if (strncmp(ptr
+ 8, "3270", 4) == 0) {
247 #if defined(CONFIG_TN3270_CONSOLE)
249 #elif defined(CONFIG_TN3215_CONSOLE)
251 #elif defined(CONFIG_SCLP_CONSOLE)
254 } else if (strncmp(ptr
+ 8, "3215", 4) == 0) {
255 #if defined(CONFIG_TN3215_CONSOLE)
257 #elif defined(CONFIG_TN3270_CONSOLE)
259 #elif defined(CONFIG_SCLP_CONSOLE)
263 } else if (MACHINE_IS_P390
) {
264 #if defined(CONFIG_TN3215_CONSOLE)
266 #elif defined(CONFIG_TN3270_CONSOLE)
270 #if defined(CONFIG_SCLP_CONSOLE)
277 extern void machine_restart_smp(char *);
278 extern void machine_halt_smp(void);
279 extern void machine_power_off_smp(void);
281 void (*_machine_restart
)(char *command
) = machine_restart_smp
;
282 void (*_machine_halt
)(void) = machine_halt_smp
;
283 void (*_machine_power_off
)(void) = machine_power_off_smp
;
286 * Reboot, halt and power_off routines for non SMP.
288 extern void reipl(unsigned long devno
);
289 extern void reipl_diag(void);
290 static void do_machine_restart_nonsmp(char * __unused
)
295 cpcmd ("IPL", NULL
, 0, NULL
);
297 reipl (0x10000 | S390_lowcore
.ipl_device
);
300 static void do_machine_halt_nonsmp(void)
302 if (MACHINE_IS_VM
&& strlen(vmhalt_cmd
) > 0)
303 cpcmd(vmhalt_cmd
, NULL
, 0, NULL
);
304 signal_processor(smp_processor_id(), sigp_stop_and_store_status
);
307 static void do_machine_power_off_nonsmp(void)
309 if (MACHINE_IS_VM
&& strlen(vmpoff_cmd
) > 0)
310 cpcmd(vmpoff_cmd
, NULL
, 0, NULL
);
311 signal_processor(smp_processor_id(), sigp_stop_and_store_status
);
314 void (*_machine_restart
)(char *command
) = do_machine_restart_nonsmp
;
315 void (*_machine_halt
)(void) = do_machine_halt_nonsmp
;
316 void (*_machine_power_off
)(void) = do_machine_power_off_nonsmp
;
320 * Reboot, halt and power_off stubs. They just call _machine_restart,
321 * _machine_halt or _machine_power_off.
324 void machine_restart(char *command
)
326 if (!in_interrupt() || oops_in_progress
)
328 * Only unblank the console if we are called in enabled
329 * context or a bust_spinlocks cleared the way for us.
332 _machine_restart(command
);
335 void machine_halt(void)
337 if (!in_interrupt() || oops_in_progress
)
339 * Only unblank the console if we are called in enabled
340 * context or a bust_spinlocks cleared the way for us.
346 void machine_power_off(void)
348 if (!in_interrupt() || oops_in_progress
)
350 * Only unblank the console if we are called in enabled
351 * context or a bust_spinlocks cleared the way for us.
354 _machine_power_off();
358 * Dummy power off function.
360 void (*pm_power_off
)(void) = machine_power_off
;
363 add_memory_hole(unsigned long start
, unsigned long end
)
365 unsigned long dma_pfn
= MAX_DMA_ADDRESS
>> PAGE_SHIFT
;
368 zholes_size
[ZONE_DMA
] += end
- start
+ 1;
369 else if (start
> dma_pfn
)
370 zholes_size
[ZONE_NORMAL
] += end
- start
+ 1;
372 zholes_size
[ZONE_DMA
] += dma_pfn
- start
+ 1;
373 zholes_size
[ZONE_NORMAL
] += end
- dma_pfn
;
377 static int __init
early_parse_mem(char *p
)
379 memory_end
= memparse(p
, &p
);
382 early_param("mem", early_parse_mem
);
385 * "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes
387 static int __init
early_parse_ipldelay(char *p
)
389 unsigned long delay
= 0;
391 delay
= simple_strtoul(p
, &p
, 0);
400 delay
*= 60 * 1000000;
403 /* now wait for the requested amount of time */
408 early_param("ipldelay", early_parse_ipldelay
);
417 * Setup lowcore for boot cpu
419 lc_pages
= sizeof(void *) == 8 ? 2 : 1;
420 lc
= (struct _lowcore
*)
421 __alloc_bootmem(lc_pages
* PAGE_SIZE
, lc_pages
* PAGE_SIZE
, 0);
422 memset(lc
, 0, lc_pages
* PAGE_SIZE
);
423 lc
->restart_psw
.mask
= PSW_BASE_BITS
| PSW_DEFAULT_KEY
;
424 lc
->restart_psw
.addr
=
425 PSW_ADDR_AMODE
| (unsigned long) restart_int_handler
;
426 lc
->external_new_psw
.mask
= PSW_KERNEL_BITS
;
427 lc
->external_new_psw
.addr
=
428 PSW_ADDR_AMODE
| (unsigned long) ext_int_handler
;
429 lc
->svc_new_psw
.mask
= PSW_KERNEL_BITS
| PSW_MASK_IO
| PSW_MASK_EXT
;
430 lc
->svc_new_psw
.addr
= PSW_ADDR_AMODE
| (unsigned long) system_call
;
431 lc
->program_new_psw
.mask
= PSW_KERNEL_BITS
;
432 lc
->program_new_psw
.addr
=
433 PSW_ADDR_AMODE
| (unsigned long)pgm_check_handler
;
434 lc
->mcck_new_psw
.mask
=
435 PSW_KERNEL_BITS
& ~PSW_MASK_MCHECK
& ~PSW_MASK_DAT
;
436 lc
->mcck_new_psw
.addr
=
437 PSW_ADDR_AMODE
| (unsigned long) mcck_int_handler
;
438 lc
->io_new_psw
.mask
= PSW_KERNEL_BITS
;
439 lc
->io_new_psw
.addr
= PSW_ADDR_AMODE
| (unsigned long) io_int_handler
;
440 lc
->ipl_device
= S390_lowcore
.ipl_device
;
441 lc
->jiffy_timer
= -1LL;
442 lc
->kernel_stack
= ((unsigned long) &init_thread_union
) + THREAD_SIZE
;
443 lc
->async_stack
= (unsigned long)
444 __alloc_bootmem(ASYNC_SIZE
, ASYNC_SIZE
, 0) + ASYNC_SIZE
;
445 lc
->panic_stack
= (unsigned long)
446 __alloc_bootmem(PAGE_SIZE
, PAGE_SIZE
, 0) + PAGE_SIZE
;
447 lc
->current_task
= (unsigned long) init_thread_union
.thread_info
.task
;
448 lc
->thread_info
= (unsigned long) &init_thread_union
;
450 if (MACHINE_HAS_IEEE
) {
451 lc
->extended_save_area_addr
= (__u32
)
452 __alloc_bootmem(PAGE_SIZE
, PAGE_SIZE
, 0);
453 /* enable extended save area */
457 set_prefix((u32
)(unsigned long) lc
);
461 setup_resources(void)
463 struct resource
*res
;
466 code_resource
.start
= (unsigned long) &_text
;
467 code_resource
.end
= (unsigned long) &_etext
- 1;
468 data_resource
.start
= (unsigned long) &_etext
;
469 data_resource
.end
= (unsigned long) &_edata
- 1;
471 for (i
= 0; i
< MEMORY_CHUNKS
&& memory_chunk
[i
].size
> 0; i
++) {
472 res
= alloc_bootmem_low(sizeof(struct resource
));
473 res
->flags
= IORESOURCE_BUSY
| IORESOURCE_MEM
;
474 switch (memory_chunk
[i
].type
) {
475 case CHUNK_READ_WRITE
:
476 res
->name
= "System RAM";
478 case CHUNK_READ_ONLY
:
479 res
->name
= "System ROM";
480 res
->flags
|= IORESOURCE_READONLY
;
483 res
->name
= "reserved";
485 res
->start
= memory_chunk
[i
].addr
;
486 res
->end
= memory_chunk
[i
].addr
+ memory_chunk
[i
].size
- 1;
487 request_resource(&iomem_resource
, res
);
488 request_resource(res
, &code_resource
);
489 request_resource(res
, &data_resource
);
496 unsigned long bootmap_size
;
497 unsigned long start_pfn
, end_pfn
, init_pfn
;
498 unsigned long last_rw_end
;
502 * partially used pages are not usable - thus
503 * we are rounding upwards:
505 start_pfn
= (__pa(&_end
) + PAGE_SIZE
- 1) >> PAGE_SHIFT
;
506 end_pfn
= max_pfn
= memory_end
>> PAGE_SHIFT
;
508 /* Initialize storage key for kernel pages */
509 for (init_pfn
= 0 ; init_pfn
< start_pfn
; init_pfn
++)
510 page_set_storage_key(init_pfn
<< PAGE_SHIFT
, PAGE_DEFAULT_KEY
);
513 * Initialize the boot-time allocator (with low memory only):
515 bootmap_size
= init_bootmem(start_pfn
, end_pfn
);
518 * Register RAM areas with the bootmem allocator.
520 last_rw_end
= start_pfn
;
522 for (i
= 0; i
< MEMORY_CHUNKS
&& memory_chunk
[i
].size
> 0; i
++) {
523 unsigned long start_chunk
, end_chunk
;
525 if (memory_chunk
[i
].type
!= CHUNK_READ_WRITE
)
527 start_chunk
= (memory_chunk
[i
].addr
+ PAGE_SIZE
- 1);
528 start_chunk
>>= PAGE_SHIFT
;
529 end_chunk
= (memory_chunk
[i
].addr
+ memory_chunk
[i
].size
);
530 end_chunk
>>= PAGE_SHIFT
;
531 if (start_chunk
< start_pfn
)
532 start_chunk
= start_pfn
;
533 if (end_chunk
> end_pfn
)
535 if (start_chunk
< end_chunk
) {
536 /* Initialize storage key for RAM pages */
537 for (init_pfn
= start_chunk
; init_pfn
< end_chunk
;
539 page_set_storage_key(init_pfn
<< PAGE_SHIFT
,
541 free_bootmem(start_chunk
<< PAGE_SHIFT
,
542 (end_chunk
- start_chunk
) << PAGE_SHIFT
);
543 if (last_rw_end
< start_chunk
)
544 add_memory_hole(last_rw_end
, start_chunk
- 1);
545 last_rw_end
= end_chunk
;
549 psw_set_key(PAGE_DEFAULT_KEY
);
551 if (last_rw_end
< end_pfn
- 1)
552 add_memory_hole(last_rw_end
, end_pfn
- 1);
555 * Reserve the bootmem bitmap itself as well. We do this in two
556 * steps (first step was init_bootmem()) because this catches
557 * the (very unlikely) case of us accidentally initializing the
558 * bootmem allocator with an invalid RAM area.
560 reserve_bootmem(start_pfn
<< PAGE_SHIFT
, bootmap_size
);
562 #ifdef CONFIG_BLK_DEV_INITRD
564 if (INITRD_START
+ INITRD_SIZE
<= memory_end
) {
565 reserve_bootmem(INITRD_START
, INITRD_SIZE
);
566 initrd_start
= INITRD_START
;
567 initrd_end
= initrd_start
+ INITRD_SIZE
;
569 printk("initrd extends beyond end of memory "
570 "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
571 initrd_start
+ INITRD_SIZE
, memory_end
);
572 initrd_start
= initrd_end
= 0;
579 * Setup function called from init/main.c just after the banner
584 setup_arch(char **cmdline_p
)
587 * print what head.S has found out about the machine
590 printk((MACHINE_IS_VM
) ?
591 "We are running under VM (31 bit mode)\n" :
592 "We are running native (31 bit mode)\n");
593 printk((MACHINE_HAS_IEEE
) ?
594 "This machine has an IEEE fpu\n" :
595 "This machine has no IEEE fpu\n");
596 #else /* CONFIG_64BIT */
597 printk((MACHINE_IS_VM
) ?
598 "We are running under VM (64 bit mode)\n" :
599 "We are running native (64 bit mode)\n");
600 #endif /* CONFIG_64BIT */
602 /* Save unparsed command line copy for /proc/cmdline */
603 strlcpy(saved_command_line
, COMMAND_LINE
, COMMAND_LINE_SIZE
);
605 *cmdline_p
= COMMAND_LINE
;
606 *(*cmdline_p
+ COMMAND_LINE_SIZE
- 1) = '\0';
608 ROOT_DEV
= Root_RAM0
;
610 init_mm
.start_code
= PAGE_OFFSET
;
611 init_mm
.end_code
= (unsigned long) &_etext
;
612 init_mm
.end_data
= (unsigned long) &_edata
;
613 init_mm
.brk
= (unsigned long) &_end
;
615 memory_end
= memory_size
;
620 memory_end
&= ~0x400000UL
;
623 * We need some free virtual space to be able to do vmalloc.
624 * On a machine with 2GB memory we make sure that we have at
625 * least 128 MB free space for vmalloc.
627 if (memory_end
> 1920*1024*1024)
628 memory_end
= 1920*1024*1024;
629 #else /* CONFIG_64BIT */
630 memory_end
&= ~0x200000UL
;
631 #endif /* CONFIG_64BIT */
638 __cpu_logical_map
[0] = S390_lowcore
.cpu_data
.cpu_addr
;
639 smp_setup_cpu_possible_map();
642 * Create kernel page tables and switch to virtual addressing.
646 /* Setup default console */
650 void print_cpu_info(struct cpuinfo_S390
*cpuinfo
)
656 "vers=%02X ident=%06X machine=%04X unused=%04X\n",
661 cpuinfo
->cpu_id
.version
,
662 cpuinfo
->cpu_id
.ident
,
663 cpuinfo
->cpu_id
.machine
,
664 cpuinfo
->cpu_id
.unused
);
668 * show_cpuinfo - Get information on one CPU for use by procfs.
671 static int show_cpuinfo(struct seq_file
*m
, void *v
)
673 struct cpuinfo_S390
*cpuinfo
;
674 unsigned long n
= (unsigned long) v
- 1;
678 seq_printf(m
, "vendor_id : IBM/S390\n"
679 "# processors : %i\n"
680 "bogomips per cpu: %lu.%02lu\n",
681 num_online_cpus(), loops_per_jiffy
/(500000/HZ
),
682 (loops_per_jiffy
/(5000/HZ
))%100);
686 if (smp_processor_id() == n
)
687 cpuinfo
= &S390_lowcore
.cpu_data
;
689 cpuinfo
= &lowcore_ptr
[n
]->cpu_data
;
691 cpuinfo
= &S390_lowcore
.cpu_data
;
693 seq_printf(m
, "processor %li: "
695 "identification = %06X, "
697 n
, cpuinfo
->cpu_id
.version
,
698 cpuinfo
->cpu_id
.ident
,
699 cpuinfo
->cpu_id
.machine
);
705 static void *c_start(struct seq_file
*m
, loff_t
*pos
)
707 return *pos
< NR_CPUS
? (void *)((unsigned long) *pos
+ 1) : NULL
;
709 static void *c_next(struct seq_file
*m
, void *v
, loff_t
*pos
)
712 return c_start(m
, pos
);
714 static void c_stop(struct seq_file
*m
, void *v
)
717 struct seq_operations cpuinfo_op
= {
721 .show
= show_cpuinfo
,
724 #define DEFINE_IPL_ATTR(_name, _format, _value) \
725 static ssize_t ipl_##_name##_show(struct subsystem *subsys, \
728 return sprintf(page, _format, _value); \
730 static struct subsys_attribute ipl_##_name##_attr = \
731 __ATTR(_name, S_IRUGO, ipl_##_name##_show, NULL);
733 DEFINE_IPL_ATTR(wwpn
, "0x%016llx\n", (unsigned long long)
734 IPL_PARMBLOCK_START
->fcp
.wwpn
);
735 DEFINE_IPL_ATTR(lun
, "0x%016llx\n", (unsigned long long)
736 IPL_PARMBLOCK_START
->fcp
.lun
);
737 DEFINE_IPL_ATTR(bootprog
, "%lld\n", (unsigned long long)
738 IPL_PARMBLOCK_START
->fcp
.bootprog
);
739 DEFINE_IPL_ATTR(br_lba
, "%lld\n", (unsigned long long)
740 IPL_PARMBLOCK_START
->fcp
.br_lba
);
748 static enum ipl_type_type
751 struct ipl_parameter_block
*ipl
= IPL_PARMBLOCK_START
;
753 if (!IPL_DEVNO_VALID
)
754 return ipl_type_unknown
;
755 if (!IPL_PARMBLOCK_VALID
)
757 if (ipl
->hdr
.header
.version
> IPL_MAX_SUPPORTED_VERSION
)
758 return ipl_type_unknown
;
759 if (ipl
->fcp
.pbt
!= IPL_TYPE_FCP
)
760 return ipl_type_unknown
;
765 ipl_type_show(struct subsystem
*subsys
, char *page
)
767 switch (get_ipl_type()) {
769 return sprintf(page
, "ccw\n");
771 return sprintf(page
, "fcp\n");
773 return sprintf(page
, "unknown\n");
777 static struct subsys_attribute ipl_type_attr
= __ATTR_RO(ipl_type
);
780 ipl_device_show(struct subsystem
*subsys
, char *page
)
782 struct ipl_parameter_block
*ipl
= IPL_PARMBLOCK_START
;
784 switch (get_ipl_type()) {
786 return sprintf(page
, "0.0.%04x\n", ipl_devno
);
788 return sprintf(page
, "0.0.%04x\n", ipl
->fcp
.devno
);
794 static struct subsys_attribute ipl_device_attr
=
795 __ATTR(device
, S_IRUGO
, ipl_device_show
, NULL
);
797 static struct attribute
*ipl_fcp_attrs
[] = {
799 &ipl_device_attr
.attr
,
802 &ipl_bootprog_attr
.attr
,
803 &ipl_br_lba_attr
.attr
,
807 static struct attribute_group ipl_fcp_attr_group
= {
808 .attrs
= ipl_fcp_attrs
,
811 static struct attribute
*ipl_ccw_attrs
[] = {
813 &ipl_device_attr
.attr
,
817 static struct attribute_group ipl_ccw_attr_group
= {
818 .attrs
= ipl_ccw_attrs
,
821 static struct attribute
*ipl_unknown_attrs
[] = {
826 static struct attribute_group ipl_unknown_attr_group
= {
827 .attrs
= ipl_unknown_attrs
,
831 ipl_parameter_read(struct kobject
*kobj
, char *buf
, loff_t off
, size_t count
)
833 unsigned int size
= IPL_PARMBLOCK_SIZE
;
837 if (off
+ count
> size
)
840 memcpy(buf
, (void *) IPL_PARMBLOCK_START
+ off
, count
);
844 static struct bin_attribute ipl_parameter_attr
= {
846 .name
= "binary_parameter",
848 .owner
= THIS_MODULE
,
851 .read
= &ipl_parameter_read
,
855 ipl_scp_data_read(struct kobject
*kobj
, char *buf
, loff_t off
, size_t count
)
857 unsigned int size
= IPL_PARMBLOCK_START
->fcp
.scp_data_len
;
858 void *scp_data
= &IPL_PARMBLOCK_START
->fcp
.scp_data
;
862 if (off
+ count
> size
)
865 memcpy(buf
, scp_data
+ off
, count
);
869 static struct bin_attribute ipl_scp_data_attr
= {
873 .owner
= THIS_MODULE
,
876 .read
= &ipl_scp_data_read
,
879 static decl_subsys(ipl
, NULL
, NULL
);
882 ipl_device_sysfs_register(void) {
885 rc
= firmware_register(&ipl_subsys
);
889 switch (get_ipl_type()) {
891 sysfs_create_group(&ipl_subsys
.kset
.kobj
, &ipl_ccw_attr_group
);
894 sysfs_create_group(&ipl_subsys
.kset
.kobj
, &ipl_fcp_attr_group
);
895 sysfs_create_bin_file(&ipl_subsys
.kset
.kobj
,
896 &ipl_parameter_attr
);
897 sysfs_create_bin_file(&ipl_subsys
.kset
.kobj
,
901 sysfs_create_group(&ipl_subsys
.kset
.kobj
,
902 &ipl_unknown_attr_group
);
908 __initcall(ipl_device_sysfs_register
);