| /* |
| * 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 */ |