1 files changed, 165 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
new file mode 100644
index 000000000..ae5135704
--- /dev/null
+++ b/arch/s390/include/asm/ipl.h
@@ -0,0 +1,165 @@
+/* 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_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)
+
+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;
+		char raw[PAGE_SIZE - sizeof(struct ipl_list_hdr)];
+	} ipl_info;
+} __packed __aligned(PAGE_SIZE);
+
+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 void ipl_store_parameters(void);
+extern size_t append_ipl_vmparm(char *, size_t);
+extern size_t append_ipl_scpdata(char *, size_t);
+
+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);
+extern void set_os_info_reipl_block(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 */