This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-powerpc / kexec.h

diff --git a/include/asm-powerpc/kexec.h b/include/asm-powerpc/kexec.h
new file mode 100644 (file)
index 0000000..6a2af2f
--- /dev/null
+++ b/include/asm-powerpc/kexec.h
@@ -0,0 +1,130 @@
+#ifndef _ASM_POWERPC_KEXEC_H
+#define _ASM_POWERPC_KEXEC_H
+#ifdef __KERNEL__
+
+/*
+ * Maximum page that is mapped directly into kernel memory.
+ * XXX: Since we copy virt we can use any page we allocate
+ */
+#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
+
+/*
+ * Maximum address we can reach in physical address mode.
+ * XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR.
+ */
+#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
+
+/* Maximum address we can use for the control code buffer */
+#ifdef __powerpc64__
+#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
+#else
+/* TASK_SIZE, probably left over from use_mm ?? */
+#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
+#endif
+
+#define KEXEC_CONTROL_CODE_SIZE 4096
+
+/* The native architecture */
+#ifdef __powerpc64__
+#define KEXEC_ARCH KEXEC_ARCH_PPC64
+#else
+#define KEXEC_ARCH KEXEC_ARCH_PPC
+#endif
+
+#ifdef CONFIG_KEXEC
+
+#ifndef __ASSEMBLY__
+#ifdef __powerpc64__
+/*
+ * This function is responsible for capturing register states if coming
+ * via panic or invoking dump using sysrq-trigger.
+ */
+static inline void crash_setup_regs(struct pt_regs *newregs,
+                                       struct pt_regs *oldregs)
+{
+       if (oldregs)
+               memcpy(newregs, oldregs, sizeof(*newregs));
+       else {
+               /* FIXME Merge this with xmon_save_regs ?? */
+               unsigned long tmp1, tmp2;
+               __asm__ __volatile__ (
+                       "std    0,0(%2)\n"
+                       "std    1,8(%2)\n"
+                       "std    2,16(%2)\n"
+                       "std    3,24(%2)\n"
+                       "std    4,32(%2)\n"
+                       "std    5,40(%2)\n"
+                       "std    6,48(%2)\n"
+                       "std    7,56(%2)\n"
+                       "std    8,64(%2)\n"
+                       "std    9,72(%2)\n"
+                       "std    10,80(%2)\n"
+                       "std    11,88(%2)\n"
+                       "std    12,96(%2)\n"
+                       "std    13,104(%2)\n"
+                       "std    14,112(%2)\n"
+                       "std    15,120(%2)\n"
+                       "std    16,128(%2)\n"
+                       "std    17,136(%2)\n"
+                       "std    18,144(%2)\n"
+                       "std    19,152(%2)\n"
+                       "std    20,160(%2)\n"
+                       "std    21,168(%2)\n"
+                       "std    22,176(%2)\n"
+                       "std    23,184(%2)\n"
+                       "std    24,192(%2)\n"
+                       "std    25,200(%2)\n"
+                       "std    26,208(%2)\n"
+                       "std    27,216(%2)\n"
+                       "std    28,224(%2)\n"
+                       "std    29,232(%2)\n"
+                       "std    30,240(%2)\n"
+                       "std    31,248(%2)\n"
+                       "mfmsr  %0\n"
+                       "std    %0, 264(%2)\n"
+                       "mfctr  %0\n"
+                       "std    %0, 280(%2)\n"
+                       "mflr   %0\n"
+                       "std    %0, 288(%2)\n"
+                       "bl     1f\n"
+               "1:     mflr   %1\n"
+                       "std    %1, 256(%2)\n"
+                       "mtlr   %0\n"
+                       "mfxer  %0\n"
+                       "std    %0, 296(%2)\n"
+                       : "=&r" (tmp1), "=&r" (tmp2)
+                       : "b" (newregs)
+                       : "memory");
+       }
+}
+#else
+/*
+ * Provide a dummy definition to avoid build failures. Will remain
+ * empty till crash dump support is enabled.
+ */
+static inline void crash_setup_regs(struct pt_regs *newregs,
+                                       struct pt_regs *oldregs) { }
+#endif /* !__powerpc64 __ */
+
+#define MAX_NOTE_BYTES 1024
+
+#ifdef __powerpc64__
+extern void kexec_smp_wait(void);      /* get and clear naca physid, wait for
+                                         master to copy new code to 0 */
+extern void __init kexec_setup(void);
+extern int crashing_cpu;
+extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *));
+#endif /* __powerpc64 __ */
+
+struct kimage;
+struct pt_regs;
+extern void default_machine_kexec(struct kimage *image);
+extern int default_machine_kexec_prepare(struct kimage *image);
+extern void default_machine_crash_shutdown(struct pt_regs *regs);
+
+extern void machine_kexec_simple(struct kimage *image);
+
+#endif /* ! __ASSEMBLY__ */
+#endif /* CONFIG_KEXEC */
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_KEXEC_H */