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