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[PATCH] s390: export ipl device parameters

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Sysfs interface to export ipl device parameters.  Dependent on the ipl type
the interface will look like this:

- ccw ipl:

/sys/firmware/ipl/device
		 /ipl_type

- fcp ipl:

/sys/firmware/ipl/binary_parameter
		 /bootprog
		 /br_lba
		 /device
		 /ipl_type
		 /lun
		 /scp_data
		 /wwpn

- otherwise (unknown that is):

/sys/firmware/ipl/ipl_type

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Heiko Carstens
2005-10-30 15:00:11 -08:00
committed by Linus Torvalds
parent ed3cb6f039
commit 1e8e338325
4 changed files with 367 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/asm-s390/setup.h
+50
View File
@@ -8,11 +8,14 @@
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H
#include <asm/types.h>
#define PARMAREA 0x10400
#define COMMAND_LINE_SIZE 896
#define RAMDISK_ORIGIN 0x800000
#define RAMDISK_SIZE 0x800000
#define MEMORY_CHUNKS 16 /* max 0x7fff */
#define IPL_PARMBLOCK_ORIGIN 0x2000
#ifndef __ASSEMBLY__
@@ -64,6 +67,53 @@ extern unsigned int console_irq;
#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
struct ipl_list_header {
u32 length;
u8 reserved[3];
u8 version;
} __attribute__((packed));
struct ipl_block_fcp {
u32 length;
u8 pbt;
u8 reserved1[322-1];
u16 devno;
u8 reserved2[4];
u64 wwpn;
u64 lun;
u32 bootprog;
u8 reserved3[12];
u64 br_lba;
u32 scp_data_len;
u8 reserved4[260];
u8 scp_data[];
} __attribute__((packed));
struct ipl_parameter_block {
union {
u32 length;
struct ipl_list_header header;
} hdr;
struct ipl_block_fcp fcp;
} __attribute__((packed));
#define IPL_MAX_SUPPORTED_VERSION (0)
#define IPL_TYPE_FCP (0)
/*
* IPL validity flags and parameters as detected in head.S
*/
extern u32 ipl_parameter_flags;
extern u16 ipl_devno;
#define IPL_DEVNO_VALID (ipl_parameter_flags & 1)
#define IPL_PARMBLOCK_VALID (ipl_parameter_flags & 2)
#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
IPL_PARMBLOCK_ORIGIN)
#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.length)
#else
#ifndef __s390x__