1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * s390 (re)ipl support
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright IBM Corp. 2007
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #ifndef _ASM_S390_IPL_H
9*4882a593Smuzhiyun #define _ASM_S390_IPL_H
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <asm/lowcore.h>
12*4882a593Smuzhiyun #include <asm/types.h>
13*4882a593Smuzhiyun #include <asm/cio.h>
14*4882a593Smuzhiyun #include <asm/setup.h>
15*4882a593Smuzhiyun #include <uapi/asm/ipl.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun struct ipl_parameter_block {
18*4882a593Smuzhiyun struct ipl_pl_hdr hdr;
19*4882a593Smuzhiyun union {
20*4882a593Smuzhiyun struct ipl_pb_hdr pb0_hdr;
21*4882a593Smuzhiyun struct ipl_pb0_common common;
22*4882a593Smuzhiyun struct ipl_pb0_fcp fcp;
23*4882a593Smuzhiyun struct ipl_pb0_ccw ccw;
24*4882a593Smuzhiyun struct ipl_pb0_nvme nvme;
25*4882a593Smuzhiyun char raw[PAGE_SIZE - sizeof(struct ipl_pl_hdr)];
26*4882a593Smuzhiyun };
27*4882a593Smuzhiyun } __packed __aligned(PAGE_SIZE);
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun #define NSS_NAME_SIZE 8
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #define IPL_BP_FCP_LEN (sizeof(struct ipl_pl_hdr) + \
32*4882a593Smuzhiyun sizeof(struct ipl_pb0_fcp))
33*4882a593Smuzhiyun #define IPL_BP0_FCP_LEN (sizeof(struct ipl_pb0_fcp))
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define IPL_BP_NVME_LEN (sizeof(struct ipl_pl_hdr) + \
36*4882a593Smuzhiyun sizeof(struct ipl_pb0_nvme))
37*4882a593Smuzhiyun #define IPL_BP0_NVME_LEN (sizeof(struct ipl_pb0_nvme))
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun #define IPL_BP_CCW_LEN (sizeof(struct ipl_pl_hdr) + \
40*4882a593Smuzhiyun sizeof(struct ipl_pb0_ccw))
41*4882a593Smuzhiyun #define IPL_BP0_CCW_LEN (sizeof(struct ipl_pb0_ccw))
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun #define IPL_MAX_SUPPORTED_VERSION (0)
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun #define IPL_RB_CERT_UNKNOWN ((unsigned short)-1)
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun #define DIAG308_VMPARM_SIZE (64)
48*4882a593Smuzhiyun #define DIAG308_SCPDATA_OFFSET offsetof(struct ipl_parameter_block, \
49*4882a593Smuzhiyun fcp.scp_data)
50*4882a593Smuzhiyun #define DIAG308_SCPDATA_SIZE (PAGE_SIZE - DIAG308_SCPDATA_OFFSET)
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun struct save_area;
53*4882a593Smuzhiyun struct save_area * __init save_area_alloc(bool is_boot_cpu);
54*4882a593Smuzhiyun struct save_area * __init save_area_boot_cpu(void);
55*4882a593Smuzhiyun void __init save_area_add_regs(struct save_area *, void *regs);
56*4882a593Smuzhiyun void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs);
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun extern void s390_reset_system(void);
59*4882a593Smuzhiyun extern size_t ipl_block_get_ascii_vmparm(char *dest, size_t size,
60*4882a593Smuzhiyun const struct ipl_parameter_block *ipb);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun enum ipl_type {
63*4882a593Smuzhiyun IPL_TYPE_UNKNOWN = 1,
64*4882a593Smuzhiyun IPL_TYPE_CCW = 2,
65*4882a593Smuzhiyun IPL_TYPE_FCP = 4,
66*4882a593Smuzhiyun IPL_TYPE_FCP_DUMP = 8,
67*4882a593Smuzhiyun IPL_TYPE_NSS = 16,
68*4882a593Smuzhiyun IPL_TYPE_NVME = 32,
69*4882a593Smuzhiyun IPL_TYPE_NVME_DUMP = 64,
70*4882a593Smuzhiyun };
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun struct ipl_info
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun enum ipl_type type;
75*4882a593Smuzhiyun union {
76*4882a593Smuzhiyun struct {
77*4882a593Smuzhiyun struct ccw_dev_id dev_id;
78*4882a593Smuzhiyun } ccw;
79*4882a593Smuzhiyun struct {
80*4882a593Smuzhiyun struct ccw_dev_id dev_id;
81*4882a593Smuzhiyun u64 wwpn;
82*4882a593Smuzhiyun u64 lun;
83*4882a593Smuzhiyun } fcp;
84*4882a593Smuzhiyun struct {
85*4882a593Smuzhiyun u32 fid;
86*4882a593Smuzhiyun u32 nsid;
87*4882a593Smuzhiyun } nvme;
88*4882a593Smuzhiyun struct {
89*4882a593Smuzhiyun char name[NSS_NAME_SIZE + 1];
90*4882a593Smuzhiyun } nss;
91*4882a593Smuzhiyun } data;
92*4882a593Smuzhiyun };
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun extern struct ipl_info ipl_info;
95*4882a593Smuzhiyun extern void setup_ipl(void);
96*4882a593Smuzhiyun extern void set_os_info_reipl_block(void);
97*4882a593Smuzhiyun
is_ipl_type_dump(void)98*4882a593Smuzhiyun static inline bool is_ipl_type_dump(void)
99*4882a593Smuzhiyun {
100*4882a593Smuzhiyun return (ipl_info.type == IPL_TYPE_FCP_DUMP) ||
101*4882a593Smuzhiyun (ipl_info.type == IPL_TYPE_NVME_DUMP);
102*4882a593Smuzhiyun }
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun struct ipl_report {
105*4882a593Smuzhiyun struct ipl_parameter_block *ipib;
106*4882a593Smuzhiyun struct list_head components;
107*4882a593Smuzhiyun struct list_head certificates;
108*4882a593Smuzhiyun size_t size;
109*4882a593Smuzhiyun };
110*4882a593Smuzhiyun
111*4882a593Smuzhiyun struct ipl_report_component {
112*4882a593Smuzhiyun struct list_head list;
113*4882a593Smuzhiyun struct ipl_rb_component_entry entry;
114*4882a593Smuzhiyun };
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun struct ipl_report_certificate {
117*4882a593Smuzhiyun struct list_head list;
118*4882a593Smuzhiyun struct ipl_rb_certificate_entry entry;
119*4882a593Smuzhiyun void *key;
120*4882a593Smuzhiyun };
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun struct kexec_buf;
123*4882a593Smuzhiyun struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib);
124*4882a593Smuzhiyun void *ipl_report_finish(struct ipl_report *report);
125*4882a593Smuzhiyun int ipl_report_free(struct ipl_report *report);
126*4882a593Smuzhiyun int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
127*4882a593Smuzhiyun unsigned char flags, unsigned short cert);
128*4882a593Smuzhiyun int ipl_report_add_certificate(struct ipl_report *report, void *key,
129*4882a593Smuzhiyun unsigned long addr, unsigned long len);
130*4882a593Smuzhiyun
131*4882a593Smuzhiyun /*
132*4882a593Smuzhiyun * DIAG 308 support
133*4882a593Smuzhiyun */
134*4882a593Smuzhiyun enum diag308_subcode {
135*4882a593Smuzhiyun DIAG308_REL_HSA = 2,
136*4882a593Smuzhiyun DIAG308_LOAD_CLEAR = 3,
137*4882a593Smuzhiyun DIAG308_LOAD_NORMAL_DUMP = 4,
138*4882a593Smuzhiyun DIAG308_SET = 5,
139*4882a593Smuzhiyun DIAG308_STORE = 6,
140*4882a593Smuzhiyun DIAG308_LOAD_NORMAL = 7,
141*4882a593Smuzhiyun };
142*4882a593Smuzhiyun
143*4882a593Smuzhiyun enum diag308_rc {
144*4882a593Smuzhiyun DIAG308_RC_OK = 0x0001,
145*4882a593Smuzhiyun DIAG308_RC_NOCONFIG = 0x0102,
146*4882a593Smuzhiyun };
147*4882a593Smuzhiyun
148*4882a593Smuzhiyun extern int diag308(unsigned long subcode, void *addr);
149*4882a593Smuzhiyun extern void store_status(void (*fn)(void *), void *data);
150*4882a593Smuzhiyun extern void lgr_info_log(void);
151*4882a593Smuzhiyun
152*4882a593Smuzhiyun #endif /* _ASM_S390_IPL_H */
153