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-rw-r--r--arch/s390/include/asm/ipl.h168
1 files changed, 168 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
new file mode 100644
index 000000000000..1171e6d144a3
--- /dev/null
+++ b/arch/s390/include/asm/ipl.h
@@ -0,0 +1,168 @@
+/*
+ * s390 (re)ipl support
+ *
+ * Copyright IBM Corp. 2007
+ */
+
+#ifndef _ASM_S390_IPL_H
+#define _ASM_S390_IPL_H
+
+#include <asm/types.h>
+#include <asm/cio.h>
+#include <asm/setup.h>
+
+#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) + 8)
+
+#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) + 8)
+
+#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;
+} __attribute__((packed));
+
+struct ipl_block_fcp {
+ u8 reserved1[313-1];
+ 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
+
+struct ipl_block_ccw {
+ u8 load_parm[8];
+ u8 reserved1[84];
+ u8 reserved2[2];
+ 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;
+} __attribute__((packed,aligned(4096)));
+
+/*
+ * IPL validity flags
+ */
+extern u32 ipl_flags;
+extern u32 dump_prefix_page;
+extern unsigned int zfcpdump_prefix_array[];
+
+extern void do_reipl(void);
+extern void do_halt(void);
+extern void do_poff(void);
+extern void ipl_save_parameters(void);
+extern void ipl_update_parameters(void);
+extern void get_ipl_vmparm(char *);
+
+enum {
+ IPL_DEVNO_VALID = 1,
+ IPL_PARMBLOCK_VALID = 2,
+ IPL_NSS_VALID = 4,
+};
+
+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_IPL = 3,
+ DIAG308_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);
+
+#endif /* _ASM_S390_IPL_H */

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