[deliverable/linux.git] / arch / s390 / include / asm / ipl.h

/*
 * s390 (re)ipl support
 *
 * Copyright IBM Corp. 2007
 */

#ifndef _ASM_S390_IPL_H
#define _ASM_S390_IPL_H

#include <asm/lowcore.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) + 16)

#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) + 16)

#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;
	u8  loadparm[8];
} __attribute__((packed));

struct ipl_block_fcp {
	u8  reserved1[305-1];
	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));

#define DIAG308_VMPARM_SIZE	64
#define DIAG308_SCPDATA_SIZE	(PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
				 offsetof(struct ipl_block_fcp, scp_data)))

struct ipl_block_ccw {
	u8  reserved1[84];
	u16 reserved2 : 13;
	u8  ssid : 3;
	u16 devno;
	u8  vm_flags;
	u8  reserved3[3];
	u32 vm_parm_len;
	u8  nss_name[8];
	u8  vm_parm[DIAG308_VMPARM_SIZE];
	u8  reserved4[8];
} __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,aligned(4096)));

/*
 * IPL validity flags
 */
extern u32 ipl_flags;
extern u32 dump_prefix_page;

struct dump_save_areas {
	struct save_area_ext **areas;
	int count;
};

extern struct dump_save_areas dump_save_areas;

extern void do_reipl(void);
extern void do_halt(void);
extern void do_poff(void);
extern void ipl_save_parameters(void);
extern void ipl_update_parameters(void);
extern size_t append_ipl_vmparm(char *, size_t);
extern size_t append_ipl_scpdata(char *, size_t);

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_flags {
	DIAG308_FLAGS_LP_VALID	= 0x80,
};

enum diag308_vm_flags {
	DIAG308_VM_FLAGS_NSS_VALID	= 0x80,
	DIAG308_VM_FLAGS_VP_VALID	= 0x40,
};

enum diag308_rc {
	DIAG308_RC_OK		= 0x0001,
	DIAG308_RC_NOCONFIG	= 0x0102,
};

extern int diag308(unsigned long subcode, void *addr);
extern void diag308_reset(void);
extern void store_status(void);
extern void lgr_info_log(void);

#endif /* _ASM_S390_IPL_H */
Commit	Line	Data
46b05d26 MH	1	/*
	2	* s390 (re)ipl support
	3	*
	4	* Copyright IBM Corp. 2007
	5	*/
	6
	7	#ifndef _ASM_S390_IPL_H
	8	#define _ASM_S390_IPL_H
	9
58952942	10	#include <asm/lowcore.h>
46b05d26	11	#include <asm/types.h>
411ed322 MH	12	#include <asm/cio.h>
411ed322 MH	13	#include <asm/setup.h>
46b05d26 MH	14
	15	#define IPL_PARMBLOCK_ORIGIN 0x2000
	16
	17	#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
	18	sizeof(struct ipl_block_fcp))
	19
69928601	20	#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 16)
fbb04f38	21
46b05d26 MH	22	#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
	23	sizeof(struct ipl_block_ccw))
	24
69928601	25	#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 16)
fbb04f38	26
46b05d26 MH	27	#define IPL_MAX_SUPPORTED_VERSION (0)
	28
	29	#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
	30	IPL_PARMBLOCK_ORIGIN)
	31	#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
	32
	33	struct ipl_list_hdr {
	34	u32 len;
	35	u8 reserved1[3];
	36	u8 version;
	37	u32 blk0_len;
	38	u8 pbt;
	39	u8 flags;
	40	u16 reserved2;
69928601	41	u8 loadparm[8];
46b05d26 MH	42	} __attribute__((packed));
	43
	44	struct ipl_block_fcp {
69928601	45	u8 reserved1[305-1];
46b05d26 MH	46	u8 opt;
	47	u8 reserved2[3];
	48	u16 reserved3;
	49	u16 devno;
	50	u8 reserved4[4];
	51	u64 wwpn;
	52	u64 lun;
	53	u32 bootprog;
	54	u8 reserved5[12];
	55	u64 br_lba;
	56	u32 scp_data_len;
	57	u8 reserved6[260];
	58	u8 scp_data[];
	59	} __attribute__((packed));
	60
a0443fbb	61	#define DIAG308_VMPARM_SIZE 64
684d2fd4 HB	62	#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
684d2fd4 HB	63	offsetof(struct ipl_block_fcp, scp_data)))
a0443fbb	64
46b05d26	65	struct ipl_block_ccw {
46b05d26	66	u8 reserved1[84];
18e22a17 SO	67	u16 reserved2 : 13;
18e22a17 SO	68	u8 ssid : 3;
46b05d26 MH	69	u16 devno;
	70	u8 vm_flags;
	71	u8 reserved3[3];
	72	u32 vm_parm_len;
a0443fbb HB	73	u8 nss_name[8];
	74	u8 vm_parm[DIAG308_VMPARM_SIZE];
	75	u8 reserved4[8];
46b05d26 MH	76	} __attribute__((packed));
	77
	78	struct ipl_parameter_block {
	79	struct ipl_list_hdr hdr;
	80	union {
	81	struct ipl_block_fcp fcp;
	82	struct ipl_block_ccw ccw;
	83	} ipl_info;
a0443fbb	84	} __attribute__((packed,aligned(4096)));
46b05d26 MH	85
46b05d26 MH	86	/*
6fc321fd	87	* IPL validity flags
46b05d26 MH	88	*/
46b05d26 MH	89	extern u32 ipl_flags;
c5dd8586	90	extern u32 dump_prefix_page;
411ed322	91
58952942	92	struct dump_save_areas {
a62bc073	93	struct save_area_ext **areas;
58952942 MH	94	int count;
	95	};
	96
	97	extern struct dump_save_areas dump_save_areas;
58952942	98
46b05d26	99	extern void do_reipl(void);
99ca4e58 MH	100	extern void do_halt(void);
99ca4e58 MH	101	extern void do_poff(void);
46b05d26	102	extern void ipl_save_parameters(void);
a0443fbb	103	extern void ipl_update_parameters(void);
684d2fd4 HB	104	extern size_t append_ipl_vmparm(char *, size_t);
684d2fd4 HB	105	extern size_t append_ipl_scpdata(char *, size_t);
46b05d26 MH	106
	107	enum {
	108	IPL_DEVNO_VALID = 1,
	109	IPL_PARMBLOCK_VALID = 2,
	110	IPL_NSS_VALID = 4,
	111	};
	112
411ed322 MH	113	enum ipl_type {
	114	IPL_TYPE_UNKNOWN = 1,
	115	IPL_TYPE_CCW = 2,
	116	IPL_TYPE_FCP = 4,
	117	IPL_TYPE_FCP_DUMP = 8,
	118	IPL_TYPE_NSS = 16,
	119	};
	120
	121	struct ipl_info
	122	{
	123	enum ipl_type type;
	124	union {
	125	struct {
	126	struct ccw_dev_id dev_id;
	127	} ccw;
	128	struct {
	129	struct ccw_dev_id dev_id;
	130	u64 wwpn;
	131	u64 lun;
	132	} fcp;
	133	struct {
	134	char name[NSS_NAME_SIZE + 1];
	135	} nss;
	136	} data;
	137	};
	138
	139	extern struct ipl_info ipl_info;
99ca4e58	140	extern void setup_ipl(void);
411ed322	141
46b05d26 MH	142	/*
	143	* DIAG 308 support
	144	*/
	145	enum diag308_subcode {
	146	DIAG308_REL_HSA = 2,
	147	DIAG308_IPL = 3,
	148	DIAG308_DUMP = 4,
	149	DIAG308_SET = 5,
	150	DIAG308_STORE = 6,
	151	};
	152
	153	enum diag308_ipl_type {
	154	DIAG308_IPL_TYPE_FCP = 0,
	155	DIAG308_IPL_TYPE_CCW = 2,
	156	};
	157
	158	enum diag308_opt {
	159	DIAG308_IPL_OPT_IPL = 0x10,
	160	DIAG308_IPL_OPT_DUMP = 0x20,
	161	};
	162
48657d22 MH	163	enum diag308_flags {
	164	DIAG308_FLAGS_LP_VALID = 0x80,
	165	};
	166
a0443fbb HB	167	enum diag308_vm_flags {
	168	DIAG308_VM_FLAGS_NSS_VALID = 0x80,
	169	DIAG308_VM_FLAGS_VP_VALID = 0x40,
	170	};
	171
46b05d26	172	enum diag308_rc {
3a95e8eb MH	173	DIAG308_RC_OK = 0x0001,
3a95e8eb MH	174	DIAG308_RC_NOCONFIG = 0x0102,
46b05d26 MH	175	};
	176
	177	extern int diag308(unsigned long subcode, void *addr);
9dc7356e	178	extern void diag308_reset(void);
60a0c68d	179	extern void store_status(void);
3ab121ab	180	extern void lgr_info_log(void);
46b05d26 MH	181
46b05d26 MH	182	#endif /* _ASM_S390_IPL_H */