154 lines
3.6 KiB
C
154 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* s390 (re)ipl support
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*
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* Copyright IBM Corp. 2007
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*/
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#ifndef _ASM_S390_IPL_H
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#define _ASM_S390_IPL_H
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#include <asm/lowcore.h>
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#include <asm/types.h>
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#include <asm/cio.h>
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#include <asm/setup.h>
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#include <asm/page.h>
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#include <uapi/asm/ipl.h>
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struct ipl_parameter_block {
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struct ipl_pl_hdr hdr;
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union {
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struct ipl_pb_hdr pb0_hdr;
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struct ipl_pb0_common common;
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struct ipl_pb0_fcp fcp;
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struct ipl_pb0_ccw ccw;
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struct ipl_pb0_nvme nvme;
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char raw[PAGE_SIZE - sizeof(struct ipl_pl_hdr)];
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};
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} __packed __aligned(PAGE_SIZE);
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#define NSS_NAME_SIZE 8
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#define IPL_BP_FCP_LEN (sizeof(struct ipl_pl_hdr) + \
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sizeof(struct ipl_pb0_fcp))
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#define IPL_BP0_FCP_LEN (sizeof(struct ipl_pb0_fcp))
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#define IPL_BP_NVME_LEN (sizeof(struct ipl_pl_hdr) + \
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sizeof(struct ipl_pb0_nvme))
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#define IPL_BP0_NVME_LEN (sizeof(struct ipl_pb0_nvme))
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#define IPL_BP_CCW_LEN (sizeof(struct ipl_pl_hdr) + \
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sizeof(struct ipl_pb0_ccw))
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#define IPL_BP0_CCW_LEN (sizeof(struct ipl_pb0_ccw))
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#define IPL_MAX_SUPPORTED_VERSION (0)
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#define IPL_RB_CERT_UNKNOWN ((unsigned short)-1)
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#define DIAG308_VMPARM_SIZE (64)
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#define DIAG308_SCPDATA_OFFSET offsetof(struct ipl_parameter_block, \
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fcp.scp_data)
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#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - DIAG308_SCPDATA_OFFSET)
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struct save_area;
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struct save_area * __init save_area_alloc(bool is_boot_cpu);
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struct save_area * __init save_area_boot_cpu(void);
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void __init save_area_add_regs(struct save_area *, void *regs);
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void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs);
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extern void s390_reset_system(void);
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extern size_t ipl_block_get_ascii_vmparm(char *dest, size_t size,
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const struct ipl_parameter_block *ipb);
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enum ipl_type {
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IPL_TYPE_UNKNOWN = 1,
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IPL_TYPE_CCW = 2,
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IPL_TYPE_FCP = 4,
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IPL_TYPE_FCP_DUMP = 8,
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IPL_TYPE_NSS = 16,
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IPL_TYPE_NVME = 32,
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IPL_TYPE_NVME_DUMP = 64,
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};
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struct ipl_info
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{
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enum ipl_type type;
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union {
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struct {
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struct ccw_dev_id dev_id;
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} ccw;
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struct {
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struct ccw_dev_id dev_id;
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u64 wwpn;
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u64 lun;
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} fcp;
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struct {
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u32 fid;
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u32 nsid;
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} nvme;
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struct {
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char name[NSS_NAME_SIZE + 1];
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} nss;
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} data;
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};
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extern struct ipl_info ipl_info;
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extern void setup_ipl(void);
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extern void set_os_info_reipl_block(void);
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static inline bool is_ipl_type_dump(void)
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{
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return (ipl_info.type == IPL_TYPE_FCP_DUMP) ||
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(ipl_info.type == IPL_TYPE_NVME_DUMP);
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}
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struct ipl_report {
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struct ipl_parameter_block *ipib;
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struct list_head components;
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struct list_head certificates;
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size_t size;
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};
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struct ipl_report_component {
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struct list_head list;
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struct ipl_rb_component_entry entry;
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};
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struct ipl_report_certificate {
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struct list_head list;
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struct ipl_rb_certificate_entry entry;
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void *key;
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};
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struct kexec_buf;
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struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib);
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void *ipl_report_finish(struct ipl_report *report);
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int ipl_report_free(struct ipl_report *report);
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int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
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unsigned char flags, unsigned short cert);
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int ipl_report_add_certificate(struct ipl_report *report, void *key,
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unsigned long addr, unsigned long len);
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/*
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* DIAG 308 support
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*/
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enum diag308_subcode {
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DIAG308_REL_HSA = 2,
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DIAG308_LOAD_CLEAR = 3,
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DIAG308_LOAD_NORMAL_DUMP = 4,
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DIAG308_SET = 5,
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DIAG308_STORE = 6,
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DIAG308_LOAD_NORMAL = 7,
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};
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enum diag308_rc {
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DIAG308_RC_OK = 0x0001,
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DIAG308_RC_NOCONFIG = 0x0102,
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};
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extern int diag308(unsigned long subcode, void *addr);
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extern void store_status(void (*fn)(void *), void *data);
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extern void lgr_info_log(void);
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#endif /* _ASM_S390_IPL_H */
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