99ca4e582d
In case of a kernel panic it is currently possible to specify that a dump should be created, the system should be rebooted or stopped. Virtual sysfs files under the directory /sys/firmware/ are used for that configuration. In addition to that, there are kernel parameters 'vmhalt', 'vmpoff' and 'vmpanic', which can be used to specify z/VM commands, which are automatically executed in case of halt, power off or a kernel panic. This patch combines both functionalities and allows to specify the z/VM CP commands also via sysfs attributes. In addition to that, it enhances the existing handling of shutdown triggers (e.g. halt or panic) and associated shutdown actions (e.g. dump or reipl) and makes it more flexible. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
153 lines
2.7 KiB
C
153 lines
2.7 KiB
C
/*
|
|
* s390 (re)ipl support
|
|
*
|
|
* Copyright IBM Corp. 2007
|
|
*/
|
|
|
|
#ifndef _ASM_S390_IPL_H
|
|
#define _ASM_S390_IPL_H
|
|
|
|
#include <asm/types.h>
|
|
#include <asm/cio.h>
|
|
#include <asm/setup.h>
|
|
|
|
#define IPL_PARMBLOCK_ORIGIN 0x2000
|
|
|
|
#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
|
|
sizeof(struct ipl_block_fcp))
|
|
|
|
#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 8)
|
|
|
|
#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
|
|
sizeof(struct ipl_block_ccw))
|
|
|
|
#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 8)
|
|
|
|
#define IPL_MAX_SUPPORTED_VERSION (0)
|
|
|
|
#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
|
|
IPL_PARMBLOCK_ORIGIN)
|
|
#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
|
|
|
|
struct ipl_list_hdr {
|
|
u32 len;
|
|
u8 reserved1[3];
|
|
u8 version;
|
|
u32 blk0_len;
|
|
u8 pbt;
|
|
u8 flags;
|
|
u16 reserved2;
|
|
} __attribute__((packed));
|
|
|
|
struct ipl_block_fcp {
|
|
u8 reserved1[313-1];
|
|
u8 opt;
|
|
u8 reserved2[3];
|
|
u16 reserved3;
|
|
u16 devno;
|
|
u8 reserved4[4];
|
|
u64 wwpn;
|
|
u64 lun;
|
|
u32 bootprog;
|
|
u8 reserved5[12];
|
|
u64 br_lba;
|
|
u32 scp_data_len;
|
|
u8 reserved6[260];
|
|
u8 scp_data[];
|
|
} __attribute__((packed));
|
|
|
|
struct ipl_block_ccw {
|
|
u8 load_param[8];
|
|
u8 reserved1[84];
|
|
u8 reserved2[2];
|
|
u16 devno;
|
|
u8 vm_flags;
|
|
u8 reserved3[3];
|
|
u32 vm_parm_len;
|
|
u8 reserved4[80];
|
|
} __attribute__((packed));
|
|
|
|
struct ipl_parameter_block {
|
|
struct ipl_list_hdr hdr;
|
|
union {
|
|
struct ipl_block_fcp fcp;
|
|
struct ipl_block_ccw ccw;
|
|
} ipl_info;
|
|
} __attribute__((packed));
|
|
|
|
/*
|
|
* IPL validity flags
|
|
*/
|
|
extern u32 ipl_flags;
|
|
extern u32 dump_prefix_page;
|
|
extern unsigned int zfcpdump_prefix_array[];
|
|
|
|
extern void do_reipl(void);
|
|
extern void do_halt(void);
|
|
extern void do_poff(void);
|
|
extern void ipl_save_parameters(void);
|
|
|
|
enum {
|
|
IPL_DEVNO_VALID = 1,
|
|
IPL_PARMBLOCK_VALID = 2,
|
|
IPL_NSS_VALID = 4,
|
|
};
|
|
|
|
enum ipl_type {
|
|
IPL_TYPE_UNKNOWN = 1,
|
|
IPL_TYPE_CCW = 2,
|
|
IPL_TYPE_FCP = 4,
|
|
IPL_TYPE_FCP_DUMP = 8,
|
|
IPL_TYPE_NSS = 16,
|
|
};
|
|
|
|
struct ipl_info
|
|
{
|
|
enum ipl_type type;
|
|
union {
|
|
struct {
|
|
struct ccw_dev_id dev_id;
|
|
} ccw;
|
|
struct {
|
|
struct ccw_dev_id dev_id;
|
|
u64 wwpn;
|
|
u64 lun;
|
|
} fcp;
|
|
struct {
|
|
char name[NSS_NAME_SIZE + 1];
|
|
} nss;
|
|
} data;
|
|
};
|
|
|
|
extern struct ipl_info ipl_info;
|
|
extern void setup_ipl(void);
|
|
|
|
/*
|
|
* DIAG 308 support
|
|
*/
|
|
enum diag308_subcode {
|
|
DIAG308_REL_HSA = 2,
|
|
DIAG308_IPL = 3,
|
|
DIAG308_DUMP = 4,
|
|
DIAG308_SET = 5,
|
|
DIAG308_STORE = 6,
|
|
};
|
|
|
|
enum diag308_ipl_type {
|
|
DIAG308_IPL_TYPE_FCP = 0,
|
|
DIAG308_IPL_TYPE_CCW = 2,
|
|
};
|
|
|
|
enum diag308_opt {
|
|
DIAG308_IPL_OPT_IPL = 0x10,
|
|
DIAG308_IPL_OPT_DUMP = 0x20,
|
|
};
|
|
|
|
enum diag308_rc {
|
|
DIAG308_RC_OK = 1,
|
|
};
|
|
|
|
extern int diag308(unsigned long subcode, void *addr);
|
|
|
|
#endif /* _ASM_S390_IPL_H */
|