Adding upstream version 1:2.0.27.upstream/1%2.0.27upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/kexec/arch/arm/phys_to_virt.c b/kexec/arch/arm/phys_to_virt.c
new file mode 100644
index 0000000..46a4f68
--- /dev/null
+++ b/kexec/arch/arm/phys_to_virt.c
@@ -0,0 +1,22 @@
+#include "../../kexec.h"
+#include "../../crashdump.h"
+#include "phys_to_virt.h"
+
+uint64_t phys_offset;
+
+/**
+ * phys_to_virt() - translate physical address to virtual address
+ * @paddr: physical address to translate
+ *
+ * For ARM we have following equation to translate from virtual address to
+ * physical:
+ *	paddr = vaddr - PAGE_OFFSET + PHYS_OFFSET
+ *
+ * See also:
+ * http://lists.arm.linux.org.uk/lurker/message/20010723.185051.94ce743c.en.html
+ */
+unsigned long
+phys_to_virt(struct crash_elf_info *elf_info, unsigned long long paddr)
+{
+	return paddr + elf_info->page_offset - phys_offset;
+}