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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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>
#include <asm/page.h>
#include <uapi/asm/ipl.h>
struct ipl_parameter_block {
struct ipl_pl_hdr hdr;
union {
struct ipl_pb_hdr pb0_hdr;
struct ipl_pb0_common common;
struct ipl_pb0_fcp fcp;
struct ipl_pb0_ccw ccw;
struct ipl_pb0_eckd eckd;
struct ipl_pb0_nvme nvme;
char raw[PAGE_SIZE - sizeof(struct ipl_pl_hdr)];
};
} __packed __aligned(PAGE_SIZE);
#define NSS_NAME_SIZE 8
#define IPL_BP_FCP_LEN (sizeof(struct ipl_pl_hdr) + \
sizeof(struct ipl_pb0_fcp))
#define IPL_BP0_FCP_LEN (sizeof(struct ipl_pb0_fcp))
#define IPL_BP_NVME_LEN (sizeof(struct ipl_pl_hdr) + \
sizeof(struct ipl_pb0_nvme))
#define IPL_BP0_NVME_LEN (sizeof(struct ipl_pb0_nvme))
#define IPL_BP_CCW_LEN (sizeof(struct ipl_pl_hdr) + \
sizeof(struct ipl_pb0_ccw))
#define IPL_BP0_CCW_LEN (sizeof(struct ipl_pb0_ccw))
#define IPL_BP_ECKD_LEN (sizeof(struct ipl_pl_hdr) + \
sizeof(struct ipl_pb0_eckd))
#define IPL_BP0_ECKD_LEN (sizeof(struct ipl_pb0_eckd))
#define IPL_MAX_SUPPORTED_VERSION (0)
#define IPL_RB_CERT_UNKNOWN ((unsigned short)-1)
#define DIAG308_VMPARM_SIZE (64)
#define DIAG308_SCPDATA_OFFSET offsetof(struct ipl_parameter_block, \
fcp.scp_data)
#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - DIAG308_SCPDATA_OFFSET)
struct save_area;
struct save_area * __init save_area_alloc(bool is_boot_cpu);
struct save_area * __init save_area_boot_cpu(void);
void __init save_area_add_regs(struct save_area *, void *regs);
void __init save_area_add_vxrs(struct save_area *, __vector128 *vxrs);
extern void s390_reset_system(void);
extern size_t ipl_block_get_ascii_vmparm(char *dest, size_t size,
const struct ipl_parameter_block *ipb);
enum ipl_type {
IPL_TYPE_UNKNOWN = 1,
IPL_TYPE_CCW = 2,
IPL_TYPE_FCP = 4,
IPL_TYPE_FCP_DUMP = 8,
IPL_TYPE_NSS = 16,
IPL_TYPE_NVME = 32,
IPL_TYPE_NVME_DUMP = 64,
IPL_TYPE_ECKD = 128,
IPL_TYPE_ECKD_DUMP = 256,
};
struct ipl_info
{
enum ipl_type type;
union {
struct {
struct ccw_dev_id dev_id;
} ccw;
struct {
struct ccw_dev_id dev_id;
} eckd;
struct {
struct ccw_dev_id dev_id;
u64 wwpn;
u64 lun;
} fcp;
struct {
u32 fid;
u32 nsid;
} nvme;
struct {
char name[NSS_NAME_SIZE + 1];
} nss;
} data;
};
extern struct ipl_info ipl_info;
extern void setup_ipl(void);
extern void set_os_info_reipl_block(void);
static inline bool is_ipl_type_dump(void)
{
return (ipl_info.type == IPL_TYPE_FCP_DUMP) ||
(ipl_info.type == IPL_TYPE_ECKD_DUMP) ||
(ipl_info.type == IPL_TYPE_NVME_DUMP);
}
struct ipl_report {
struct ipl_parameter_block *ipib;
struct list_head components;
struct list_head certificates;
size_t size;
};
struct ipl_report_component {
struct list_head list;
struct ipl_rb_component_entry entry;
};
struct ipl_report_certificate {
struct list_head list;
struct ipl_rb_certificate_entry entry;
void *key;
};
struct kexec_buf;
struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib);
void *ipl_report_finish(struct ipl_report *report);
int ipl_report_free(struct ipl_report *report);
int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
unsigned char flags, unsigned short cert);
int ipl_report_add_certificate(struct ipl_report *report, void *key,
unsigned long addr, unsigned long len);
bool ipl_get_secureboot(void);
/*
* DIAG 308 support
*/
enum diag308_subcode {
DIAG308_CLEAR_RESET = 0,
DIAG308_LOAD_NORMAL_RESET = 1,
DIAG308_REL_HSA = 2,
DIAG308_LOAD_CLEAR = 3,
DIAG308_LOAD_NORMAL_DUMP = 4,
DIAG308_SET = 5,
DIAG308_STORE = 6,
DIAG308_LOAD_NORMAL = 7,
};
enum diag308_subcode_flags {
DIAG308_FLAG_EI = 1UL << 16,
};
enum diag308_rc {
DIAG308_RC_OK = 0x0001,
DIAG308_RC_NOCONFIG = 0x0102,
};
extern int diag308(unsigned long subcode, void *addr);
extern void store_status(void (*fn)(void *), void *data);
extern void lgr_info_log(void);
#endif /* _ASM_S390_IPL_H */