fadump: Initialize elfcore header and add PT_LOAD program headers.

[deliverable/linux.git] / arch / powerpc / include / asm / fadump.h

diff --git a/arch/powerpc/include/asm/fadump.h b/arch/powerpc/include/asm/fadump.h
index bbaf278bdccc0fe26e4d9d652bd1efd00e2c0d9a..9e172a5d53c76c3489be1d8e6fead3ff1091ee6d 100644 (file)
--- a/arch/powerpc/include/asm/fadump.h
+++ b/arch/powerpc/include/asm/fadump.h
@@ -43,6 +43,12 @@
 #define MIN_BOOT_MEM   (((RMA_END < (0x1UL << 28)) ? (0x1UL << 28) : RMA_END) \
                        + (0x1UL << 26))
 
+#define memblock_num_regions(memblock_type)    (memblock.memblock_type.cnt)
+
+#ifndef ELF_CORE_EFLAGS
+#define ELF_CORE_EFLAGS 0
+#endif
+
 /* Firmware provided dump sections */
 #define FADUMP_CPU_STATE_DATA  0x0001
 #define FADUMP_HPTE_REGION     0x0002
@@ -56,6 +62,9 @@
 #define FADUMP_UNREGISTER      2
 #define FADUMP_INVALIDATE      3
 
+/* Dump status flag */
+#define FADUMP_ERROR_FLAG      0x2000
+
 /* Kernel Dump section info */
 struct fadump_section {
        u32     request_flag;
@@ -109,6 +118,7 @@ struct fw_dump {
        /* cmd line option during boot */
        unsigned long   reserve_bootvar;
 
+       unsigned long   fadumphdr_addr;
        int             ibm_configure_kernel_dump;
 
        unsigned long   fadump_enabled:1;
@@ -117,6 +127,39 @@ struct fw_dump {
        unsigned long   dump_registered:1;
 };
 
+/*
+ * Copy the ascii values for first 8 characters from a string into u64
+ * variable at their respective indexes.
+ * e.g.
+ *  The string "FADMPINF" will be converted into 0x4641444d50494e46
+ */
+static inline u64 str_to_u64(const char *str)
+{
+       u64 val = 0;
+       int i;
+
+       for (i = 0; i < sizeof(val); i++)
+               val = (*str) ? (val << 8) | *str++ : val << 8;
+       return val;
+}
+#define STR_TO_HEX(x)  str_to_u64(x)
+
+#define FADUMP_CRASH_INFO_MAGIC                STR_TO_HEX("FADMPINF")
+
+/* fadump crash info structure */
+struct fadump_crash_info_header {
+       u64             magic_number;
+       u64             elfcorehdr_addr;
+};
+
+/* Crash memory ranges */
+#define INIT_CRASHMEM_RANGES   (INIT_MEMBLOCK_REGIONS + 2)
+
+struct fad_crash_memory_ranges {
+       unsigned long long      base;
+       unsigned long long      size;
+};
+
 extern int early_init_dt_scan_fw_dump(unsigned long node,
                const char *uname, int depth, void *data);
 extern int fadump_reserve_mem(void);