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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2005-10-30 15:00:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-30 17:37:16 -0800 |
| commit | 1e8e338325fa0f2bd5c1c800086e900cf188d2cd (patch) | |
| tree | fd1e051c0883725d3b24ec9acb428aeddaccf07b /include/asm-s390 | |
| parent | ed3cb6f039bb296457bfd2877cba6ad0287d8d54 (diff) | |
| download | linux-1e8e338325fa0f2bd5c1c800086e900cf188d2cd.tar.gz linux-1e8e338325fa0f2bd5c1c800086e900cf188d2cd.tar.bz2 linux-1e8e338325fa0f2bd5c1c800086e900cf188d2cd.zip | |
[PATCH] s390: export ipl device parameters
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>
Diffstat (limited to 'include/asm-s390')
| -rw-r--r-- | include/asm-s390/setup.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h index 0d51c484c2ea..348a88137445 100644 --- a/include/asm-s390/setup.h +++ b/include/asm-s390/setup.h @@ -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__ |