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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>

#define NSS_NAME_SIZE	8

#define IPL_PARMBLOCK_ORIGIN	0x2000

#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
			      sizeof(struct ipl_block_fcp))

#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 16)

#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
			      sizeof(struct ipl_block_ccw))

#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 16)

#define IPL_MAX_SUPPORTED_VERSION (0)

#define IPL_PARMBLOCK_START	((struct ipl_parameter_block *) \
				 IPL_PARMBLOCK_ORIGIN)
#define IPL_PARMBLOCK_SIZE	(IPL_PARMBLOCK_START->hdr.len)

struct ipl_list_hdr {
	u32 len;
	u8  reserved1[3];
	u8  version;
	u32 blk0_len;
	u8  pbt;
	u8  flags;
	u16 reserved2;
	u8  loadparm[8];
} __attribute__((packed));

struct ipl_block_fcp {
	u8  reserved1[305-1];
	u8  opt;
	u8  reserved2[3];
	u16 reserved3;
	u16 devno;
	u8  reserved4[4];
	u64 wwpn;
	u64 lun;
	u32 bootprog;
	u8  reserved5[12];
	u64 br_lba;
	u32 scp_data_len;
	u8  reserved6[260];
	u8  scp_data[];
} __attribute__((packed));

#define DIAG308_VMPARM_SIZE	64
#define DIAG308_SCPDATA_SIZE	(PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
				 offsetof(struct ipl_block_fcp, scp_data)))

struct ipl_block_ccw {
	u8  reserved1[84];
	u16 reserved2 : 13;
	u8  ssid : 3;
	u16 devno;
	u8  vm_flags;
	u8  reserved3[3];
	u32 vm_parm_len;
	u8  nss_name[8];
	u8  vm_parm[DIAG308_VMPARM_SIZE];
	u8  reserved4[8];
} __attribute__((packed));

struct ipl_parameter_block {
	struct ipl_list_hdr hdr;
	union {
		struct ipl_block_fcp fcp;
		struct ipl_block_ccw ccw;
	} ipl_info;
} __packed __aligned(PAGE_SIZE);

/*
 * IPL validity flags
 */
extern u32 ipl_flags;

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 do_reipl(void);
extern void do_halt(void);
extern void do_poff(void);
extern void ipl_verify_parameters(void);
extern void ipl_update_parameters(void);
extern size_t append_ipl_vmparm(char *, size_t);
extern size_t append_ipl_scpdata(char *, size_t);

enum {
	IPL_DEVNO_VALID		= 1,
	IPL_PARMBLOCK_VALID	= 2,
};

enum ipl_type {
	IPL_TYPE_UNKNOWN	= 1,
	IPL_TYPE_CCW		= 2,
	IPL_TYPE_FCP		= 4,
	IPL_TYPE_FCP_DUMP	= 8,
	IPL_TYPE_NSS		= 16,
};

struct ipl_info
{
	enum ipl_type type;
	union {
		struct {
			struct ccw_dev_id dev_id;
		} ccw;
		struct {
			struct ccw_dev_id dev_id;
			u64 wwpn;
			u64 lun;
		} fcp;
		struct {
			char name[NSS_NAME_SIZE + 1];
		} nss;
	} data;
};

extern struct ipl_info ipl_info;
extern void setup_ipl(void);

/*
 * DIAG 308 support
 */
enum diag308_subcode  {
	DIAG308_REL_HSA = 2,
	DIAG308_LOAD_CLEAR = 3,
	DIAG308_LOAD_NORMAL_DUMP = 4,
	DIAG308_SET = 5,
	DIAG308_STORE = 6,
};

enum diag308_ipl_type {
	DIAG308_IPL_TYPE_FCP	= 0,
	DIAG308_IPL_TYPE_CCW	= 2,
};

enum diag308_opt {
	DIAG308_IPL_OPT_IPL	= 0x10,
	DIAG308_IPL_OPT_DUMP	= 0x20,
};

enum diag308_flags {
	DIAG308_FLAGS_LP_VALID	= 0x80,
};

enum diag308_vm_flags {
	DIAG308_VM_FLAGS_NSS_VALID	= 0x80,
	DIAG308_VM_FLAGS_VP_VALID	= 0x40,
};

enum diag308_rc {
	DIAG308_RC_OK		= 0x0001,
	DIAG308_RC_NOCONFIG	= 0x0102,
};

extern int diag308(unsigned long subcode, void *addr);
extern void diag308_reset(void);
extern void store_status(void (*fn)(void *), void *data);
extern void lgr_info_log(void);

#endif /* _ASM_S390_IPL_H */

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fpu Folder 0755
trace Folder 0755
Kbuild File 557 B 0644
airq.h File 3.02 KB 0644
alternative-asm.h File 3.07 KB 0644
alternative.h File 4.99 KB 0644
ap.h File 9.9 KB 0644
appldata.h File 1.54 KB 0644
archrandom.h File 1.17 KB 0644
asm-prototypes.h File 227 B 0644
atomic.h File 5.1 KB 0644
atomic_ops.h File 4.02 KB 0644
barrier.h File 1.84 KB 0644
bitops.h File 10.13 KB 0644
bug.h File 1.49 KB 0644
bugs.h File 441 B 0644
cache.h File 387 B 0644
ccwdev.h File 7.99 KB 0644
ccwgroup.h File 2.53 KB 0644
checksum.h File 3.24 KB 0644
chpid.h File 974 B 0644
cio.h File 8.01 KB 0644
clp.h File 1.32 KB 0644
cmb.h File 425 B 0644
cmpxchg.h File 1.76 KB 0644
compat.h File 7.9 KB 0644
cpacf.h File 16.8 KB 0644
cpcmd.h File 1.11 KB 0644
cpu.h File 549 B 0644
cpu_mf.h File 8.99 KB 0644
cpufeature.h File 963 B 0644
cputime.h File 805 B 0644
crw.h File 1.86 KB 0644
css_chars.h File 769 B 0644
ctl_reg.h File 2.89 KB 0644
current.h File 405 B 0644
debug.h File 8.1 KB 0644
delay.h File 721 B 0644
diag.h File 5.94 KB 0644
dis.h File 637 B 0644
dma-mapping.h File 621 B 0644
dma.h File 456 B 0644
eadm.h File 2.03 KB 0644
ebcdic.h File 1.41 KB 0644
elf.h File 10.36 KB 0644
exec.h File 269 B 0644
extable.h File 875 B 0644
extmem.h File 804 B 0644
facility.h File 2.44 KB 0644
fcx.h File 7.91 KB 0644
ftrace.h File 1.66 KB 0644
futex.h File 2.09 KB 0644
gmap.h File 4.93 KB 0644
hardirq.h File 670 B 0644
hugetlb.h File 2.87 KB 0644
hw_irq.h File 249 B 0644
idals.h File 5.22 KB 0644
idle.h File 709 B 0644
io.h File 2.03 KB 0644
ipl.h File 3.6 KB 0644
irq.h File 2.55 KB 0644
irqflags.h File 1.76 KB 0644
isc.h File 1000 B 0644
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kvm_host.h File 22.24 KB 0644
kvm_para.h File 5.78 KB 0644
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livepatch.h File 461 B 0644
lowcore.h File 6.29 KB 0644
mmu.h File 1.19 KB 0644
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mmzone.h File 316 B 0644
module.h File 802 B 0644
nmi.h File 3.44 KB 0644
nospec-branch.h File 342 B 0644
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os_info.h File 1.1 KB 0644
page-states.h File 486 B 0644
page.h File 5.12 KB 0644
pci.h File 6.26 KB 0644
pci_clp.h File 4.25 KB 0644
pci_debug.h File 608 B 0644
pci_dma.h File 5.7 KB 0644
pci_insn.h File 2.59 KB 0644
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percpu.h File 6.44 KB 0644
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pgtable.h File 47.7 KB 0644
pkey.h File 4.23 KB 0644
preempt.h File 3.25 KB 0644
processor.h File 10.42 KB 0644
ptrace.h File 5.27 KB 0644
qdio.h File 11.67 KB 0644
reset.h File 471 B 0644
runtime_instr.h File 1.76 KB 0644
schid.h File 525 B 0644
sclp.h File 3.38 KB 0644
scsw.h File 24.1 KB 0644
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sections.h File 155 B 0644
segment.h File 93 B 0644
serial.h File 147 B 0644
set_memory.h File 779 B 0644
setup.h File 4.44 KB 0644
shmparam.h File 285 B 0644
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vdso.h File 1.8 KB 0644
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vtime.h File 182 B 0644
vtimer.h File 866 B 0644
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xor.h File 454 B 0644