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-rw-r--r--arch/s390/include/asm/ipl.h159
1 files changed, 159 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..a405b6bb8
--- /dev/null
+++ b/arch/s390/include/asm/ipl.h
@@ -0,0 +1,159 @@
+/* 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_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_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,
+};
+
+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 {
+ 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_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);
+
+/*
+ * 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 */