[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;

struct save_area;
struct save_area * __init save_area_alloc(bool is_boot_cpu);
struct save_area * __init save_area_boot_cpu(void);
void __init save_area_add_regs(struct save_area *, void *regs);
void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs);

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 (*fn)(void *), void *data);
extern void lgr_info_log(void);

#endif /* _ASM_S390_IPL_H */
Commit	Line	Data
	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
	10	#include <asm/lowcore.h>
	11	#include <asm/types.h>
	12	#include <asm/cio.h>
	13	#include <asm/setup.h>
	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
	20	#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 16)
	21
	22	#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
	23	sizeof(struct ipl_block_ccw))
	24
	25	#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 16)
	26
	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;
	41	u8 loadparm[8];
	42	} __attribute__((packed));
	43
	44	struct ipl_block_fcp {
	45	u8 reserved1[305-1];
	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
	61	#define DIAG308_VMPARM_SIZE 64
	62	#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
	63	offsetof(struct ipl_block_fcp, scp_data)))
	64
	65	struct ipl_block_ccw {
	66	u8 reserved1[84];
	67	u16 reserved2 : 13;
	68	u8 ssid : 3;
	69	u16 devno;
	70	u8 vm_flags;
	71	u8 reserved3[3];
	72	u32 vm_parm_len;
	73	u8 nss_name[8];
	74	u8 vm_parm[DIAG308_VMPARM_SIZE];
	75	u8 reserved4[8];
	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;
	84	} __attribute__((packed,aligned(4096)));
	85
	86	/*
	87	* IPL validity flags
	88	*/
	89	extern u32 ipl_flags;
	90
	91	struct save_area;
	92	struct save_area * __init save_area_alloc(bool is_boot_cpu);
	93	struct save_area * __init save_area_boot_cpu(void);
	94	void __init save_area_add_regs(struct save_area , void regs);
	95	void __init save_area_add_vxrs(struct save_area , __vector128 vxrs);
	96
	97	extern void do_reipl(void);
	98	extern void do_halt(void);
	99	extern void do_poff(void);
	100	extern void ipl_save_parameters(void);
	101	extern void ipl_update_parameters(void);
	102	extern size_t append_ipl_vmparm(char *, size_t);
	103	extern size_t append_ipl_scpdata(char *, size_t);
	104
	105	enum {
	106	IPL_DEVNO_VALID = 1,
	107	IPL_PARMBLOCK_VALID = 2,
	108	IPL_NSS_VALID = 4,
	109	};
	110
	111	enum ipl_type {
	112	IPL_TYPE_UNKNOWN = 1,
	113	IPL_TYPE_CCW = 2,
	114	IPL_TYPE_FCP = 4,
	115	IPL_TYPE_FCP_DUMP = 8,
	116	IPL_TYPE_NSS = 16,
	117	};
	118
	119	struct ipl_info
	120	{
	121	enum ipl_type type;
	122	union {
	123	struct {
	124	struct ccw_dev_id dev_id;
	125	} ccw;
	126	struct {
	127	struct ccw_dev_id dev_id;
	128	u64 wwpn;
	129	u64 lun;
	130	} fcp;
	131	struct {
	132	char name[NSS_NAME_SIZE + 1];
	133	} nss;
	134	} data;
	135	};
	136
	137	extern struct ipl_info ipl_info;
	138	extern void setup_ipl(void);
	139
	140	/*
	141	* DIAG 308 support
	142	*/
	143	enum diag308_subcode {
	144	DIAG308_REL_HSA = 2,
	145	DIAG308_IPL = 3,
	146	DIAG308_DUMP = 4,
	147	DIAG308_SET = 5,
	148	DIAG308_STORE = 6,
	149	};
	150
	151	enum diag308_ipl_type {
	152	DIAG308_IPL_TYPE_FCP = 0,
	153	DIAG308_IPL_TYPE_CCW = 2,
	154	};
	155
	156	enum diag308_opt {
	157	DIAG308_IPL_OPT_IPL = 0x10,
	158	DIAG308_IPL_OPT_DUMP = 0x20,
	159	};
	160
	161	enum diag308_flags {
	162	DIAG308_FLAGS_LP_VALID = 0x80,
	163	};
	164
	165	enum diag308_vm_flags {
	166	DIAG308_VM_FLAGS_NSS_VALID = 0x80,
	167	DIAG308_VM_FLAGS_VP_VALID = 0x40,
	168	};
	169
	170	enum diag308_rc {
	171	DIAG308_RC_OK = 0x0001,
	172	DIAG308_RC_NOCONFIG = 0x0102,
	173	};
	174
	175	extern int diag308(unsigned long subcode, void *addr);
	176	extern void diag308_reset(void);
	177	extern void store_status(void (fn)(void ), void *data);
	178	extern void lgr_info_log(void);
	179
	180	#endif /* _ASM_S390_IPL_H */