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authorMichael Holzheu <holzheu@de.ibm.com>2006-09-20 15:58:49 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-20 15:58:49 +0200
commitff6b8ea68f4b7353f88b97024f28127e2148aa00 (patch)
tree67ebb74cbbc042d99325ff33c3f80e4b3e0a1c42 /include
parent[S390] hypfs compiler warnings. (diff)
downloadlinux-ff6b8ea68f4b7353f88b97024f28127e2148aa00.tar.xz
linux-ff6b8ea68f4b7353f88b97024f28127e2148aa00.zip
[S390] ipl/dump on panic.
It is now possible to specify a ccw/fcp dump device which is used to automatically create a system dump in case of a kernel panic. The dump device can be configured under /sys/firmware/dump. In addition it is now possible to specify a ccw/fcp device which is used for the next reboot of Linux. The reipl device can be configured under /sys/firmware/reipl. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include')
-rw-r--r--include/asm-s390/cio.h7
-rw-r--r--include/asm-s390/lowcore.h13
-rw-r--r--include/asm-s390/setup.h54
3 files changed, 57 insertions, 17 deletions
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index 28fdd6e2b8ba..da063cd5f0a0 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -270,6 +270,11 @@ struct diag210 {
__u32 vrdccrft : 8; /* real device feature (output) */
} __attribute__ ((packed,aligned(4)));
+struct ccw_dev_id {
+ u8 ssid;
+ u16 devno;
+};
+
extern int diag210(struct diag210 *addr);
extern void wait_cons_dev(void);
@@ -280,6 +285,8 @@ extern void cio_reset_channel_paths(void);
extern void css_schedule_reprobe(void);
+extern void reipl_ccw_dev(struct ccw_dev_id *id);
+
#endif
#endif
diff --git a/include/asm-s390/lowcore.h b/include/asm-s390/lowcore.h
index 596c8b172104..2e3d4cca5e21 100644
--- a/include/asm-s390/lowcore.h
+++ b/include/asm-s390/lowcore.h
@@ -47,6 +47,7 @@
#define __LC_PER_ATMID 0x096
#define __LC_PER_ADDRESS 0x098
#define __LC_PER_ACCESS_ID 0x0A1
+#define __LC_AR_MODE_ID 0x0A3
#define __LC_SUBCHANNEL_ID 0x0B8
#define __LC_SUBCHANNEL_NR 0x0BA
@@ -106,18 +107,28 @@
#define __LC_INT_CLOCK 0xDE8
#endif /* __s390x__ */
-#define __LC_PANIC_MAGIC 0xE00
+#define __LC_PANIC_MAGIC 0xE00
#ifndef __s390x__
#define __LC_PFAULT_INTPARM 0x080
#define __LC_CPU_TIMER_SAVE_AREA 0x0D8
+#define __LC_CLOCK_COMP_SAVE_AREA 0x0E0
+#define __LC_PSW_SAVE_AREA 0x100
+#define __LC_PREFIX_SAVE_AREA 0x108
#define __LC_AREGS_SAVE_AREA 0x120
+#define __LC_FPREGS_SAVE_AREA 0x160
#define __LC_GPREGS_SAVE_AREA 0x180
#define __LC_CREGS_SAVE_AREA 0x1C0
#else /* __s390x__ */
#define __LC_PFAULT_INTPARM 0x11B8
+#define __LC_FPREGS_SAVE_AREA 0x1200
#define __LC_GPREGS_SAVE_AREA 0x1280
+#define __LC_PSW_SAVE_AREA 0x1300
+#define __LC_PREFIX_SAVE_AREA 0x1318
+#define __LC_FP_CREG_SAVE_AREA 0x131C
+#define __LC_TODREG_SAVE_AREA 0x1324
#define __LC_CPU_TIMER_SAVE_AREA 0x1328
+#define __LC_CLOCK_COMP_SAVE_AREA 0x1331
#define __LC_AREGS_SAVE_AREA 0x1340
#define __LC_CREGS_SAVE_AREA 0x1380
#endif /* __s390x__ */
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 02c96d57f0cf..4a1126d8439a 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -68,39 +68,59 @@ extern unsigned int console_irq;
#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
-struct ipl_list_header {
- u32 length;
- u8 reserved[3];
+
+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 {
- u32 length;
- u8 pbt;
- u8 reserved1[322-1];
+ u8 reserved1[313-1];
+ u8 opt;
+ u8 reserved2[3];
+ u16 reserved3;
u16 devno;
- u8 reserved2[4];
+ u8 reserved4[4];
u64 wwpn;
u64 lun;
u32 bootprog;
- u8 reserved3[12];
+ u8 reserved5[12];
u64 br_lba;
u32 scp_data_len;
- u8 reserved4[260];
+ u8 reserved6[260];
u8 scp_data[];
} __attribute__((packed));
+struct ipl_block_ccw {
+ u8 load_param[8];
+ u8 reserved1[84];
+ u8 reserved2[2];
+ u16 devno;
+ u8 vm_flags;
+ u8 reserved3[3];
+ u32 vm_parm_len;
+} __attribute__((packed));
+
struct ipl_parameter_block {
+ struct ipl_list_hdr hdr;
union {
- u32 length;
- struct ipl_list_header header;
- } hdr;
- struct ipl_block_fcp fcp;
+ struct ipl_block_fcp fcp;
+ struct ipl_block_ccw ccw;
+ } ipl_info;
} __attribute__((packed));
-#define IPL_MAX_SUPPORTED_VERSION (0)
+#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
+ sizeof(struct ipl_block_fcp))
-#define IPL_TYPE_FCP (0)
+#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
+ sizeof(struct ipl_block_ccw))
+
+#define IPL_MAX_SUPPORTED_VERSION (0)
/*
* IPL validity flags and parameters as detected in head.S
@@ -108,12 +128,14 @@ struct ipl_parameter_block {
extern u32 ipl_parameter_flags;
extern u16 ipl_devno;
+void do_reipl(void);
+
#define IPL_DEVNO_VALID (ipl_parameter_flags & 1)
#define IPL_PARMBLOCK_VALID (ipl_parameter_flags & 2)
#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
IPL_PARMBLOCK_ORIGIN)
-#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.length)
+#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
#else /* __ASSEMBLY__ */