Linux 4.8-rc8
[linux/fpc-iii.git] / arch / s390 / include / asm / ipl.h
blob4da22b2f0521a6822aa61f92e09f9544489304b9
1 /*
2 * s390 (re)ipl support
4 * Copyright IBM Corp. 2007
5 */
7 #ifndef _ASM_S390_IPL_H
8 #define _ASM_S390_IPL_H
10 #include <asm/lowcore.h>
11 #include <asm/types.h>
12 #include <asm/cio.h>
13 #include <asm/setup.h>
15 #define IPL_PARMBLOCK_ORIGIN 0x2000
17 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
18 sizeof(struct ipl_block_fcp))
20 #define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 16)
22 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
23 sizeof(struct ipl_block_ccw))
25 #define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 16)
27 #define IPL_MAX_SUPPORTED_VERSION (0)
29 #define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
30 IPL_PARMBLOCK_ORIGIN)
31 #define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
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));
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));
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)))
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));
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)));
87 * IPL validity flags
89 extern u32 ipl_flags;
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);
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);
105 enum {
106 IPL_DEVNO_VALID = 1,
107 IPL_PARMBLOCK_VALID = 2,
108 IPL_NSS_VALID = 4,
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,
119 struct ipl_info
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;
137 extern struct ipl_info ipl_info;
138 extern void setup_ipl(void);
141 * DIAG 308 support
143 enum diag308_subcode {
144 DIAG308_REL_HSA = 2,
145 DIAG308_LOAD_CLEAR = 3,
146 DIAG308_LOAD_NORMAL_DUMP = 4,
147 DIAG308_SET = 5,
148 DIAG308_STORE = 6,
151 enum diag308_ipl_type {
152 DIAG308_IPL_TYPE_FCP = 0,
153 DIAG308_IPL_TYPE_CCW = 2,
156 enum diag308_opt {
157 DIAG308_IPL_OPT_IPL = 0x10,
158 DIAG308_IPL_OPT_DUMP = 0x20,
161 enum diag308_flags {
162 DIAG308_FLAGS_LP_VALID = 0x80,
165 enum diag308_vm_flags {
166 DIAG308_VM_FLAGS_NSS_VALID = 0x80,
167 DIAG308_VM_FLAGS_VP_VALID = 0x40,
170 enum diag308_rc {
171 DIAG308_RC_OK = 0x0001,
172 DIAG308_RC_NOCONFIG = 0x0102,
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);
180 #endif /* _ASM_S390_IPL_H */