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

[linux-2.6.git] / arch / mips / kernel / machine_kexec.c

diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c
new file mode 100644 (file)
index 0000000..e0ad754
--- /dev/null
+++ b/arch/mips/kernel/machine_kexec.c
@@ -0,0 +1,85 @@
+/*
+ * machine_kexec.c for kexec
+ * Created by <nschichan@corp.free.fr> on Thu Oct 12 15:15:06 2006
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+
+#include <linux/kexec.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+
+#include <asm/cacheflush.h>
+#include <asm/page.h>
+
+const extern unsigned char relocate_new_kernel[];
+const extern unsigned int relocate_new_kernel_size;
+
+extern unsigned long kexec_start_address;
+extern unsigned long kexec_indirection_page;
+
+int
+machine_kexec_prepare(struct kimage *kimage)
+{
+       return 0;
+}
+
+void
+machine_kexec_cleanup(struct kimage *kimage)
+{
+}
+
+void
+machine_shutdown(void)
+{
+}
+
+void
+machine_crash_shutdown(struct pt_regs *regs)
+{
+}
+
+void
+machine_kexec(struct kimage *image)
+{
+       unsigned long reboot_code_buffer;
+       unsigned long entry;
+       unsigned long *ptr;
+
+       reboot_code_buffer =
+         (unsigned long)page_address(image->control_code_page);
+
+       kexec_start_address = image->start;
+       kexec_indirection_page = phys_to_virt(image->head & PAGE_MASK);
+
+       memcpy((void*)reboot_code_buffer, relocate_new_kernel,
+              relocate_new_kernel_size);
+
+       /*
+        * The generic kexec code builds a page list with physical
+        * addresses. they are directly accessible through KSEG0 (or
+        * CKSEG0 or XPHYS if on 64bit system), hence the
+        * pys_to_virt() call.
+        */
+       for (ptr = &image->head; (entry = *ptr) && !(entry &IND_DONE);
+            ptr = (entry & IND_INDIRECTION) ?
+              phys_to_virt(entry & PAGE_MASK) : ptr + 1) {
+               if (*ptr & IND_SOURCE || *ptr & IND_INDIRECTION ||
+                   *ptr & IND_DESTINATION)
+                       *ptr = phys_to_virt(*ptr);
+       }
+
+       /*
+        * we do not want to be bothered.
+        */
+       local_irq_disable();
+
+       flush_icache_range(reboot_code_buffer,
+                          reboot_code_buffer + KEXEC_CONTROL_CODE_SIZE);
+
+       printk("Will call new kernel at %08x\n", image->start);
+       printk("Bye ...\n");
+       flush_cache_all();
+       ((void (*)(void))reboot_code_buffer)();
+}