[POWERPC] Move bootwrapper ELF parsing routines to a file

The ELF parsing routines local to arch/powerpc/boot/main.c are useful
to other callers therefore move them to their own file.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/arch/powerpc/boot/elf_util.c b/arch/powerpc/boot/elf_util.c
new file mode 100644
index 000000000000..7454aa4cc20c
--- /dev/null
+++ b/arch/powerpc/boot/elf_util.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) Paul Mackerras 1997.
+ *
+ * Updates for PPC64 by Todd Inglett, Dave Engebretsen & Peter Bergner.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "elf.h"
+#include "page.h"
+#include "string.h"
+#include "stdio.h"
+
+int parse_elf64(void *hdr, struct elf_info *info)
+{
+        Elf64_Ehdr *elf64 = hdr;
+        Elf64_Phdr *elf64ph;
+        unsigned int i;
+
+        if (!(elf64->e_ident[EI_MAG0]  == ELFMAG0       &&
+              elf64->e_ident[EI_MAG1]  == ELFMAG1       &&
+              elf64->e_ident[EI_MAG2]  == ELFMAG2       &&
+              elf64->e_ident[EI_MAG3]  == ELFMAG3       &&
+              elf64->e_ident[EI_CLASS] == ELFCLASS64    &&
+              elf64->e_ident[EI_DATA]  == ELFDATA2MSB   &&
+              elf64->e_type            == ET_EXEC       &&
+              elf64->e_machine         == EM_PPC64))
+                return 0;
+
+        elf64ph = (Elf64_Phdr *)((unsigned long)elf64 +
+                                 (unsigned long)elf64->e_phoff);
+        for (i = 0; i < (unsigned int)elf64->e_phnum; i++, elf64ph++)
+                if (elf64ph->p_type == PT_LOAD)
+                        break;
+        if (i >= (unsigned int)elf64->e_phnum)
+                return 0;
+
+        info->loadsize = (unsigned long)elf64ph->p_filesz;
+        info->memsize = (unsigned long)elf64ph->p_memsz;
+        info->elfoffset = (unsigned long)elf64ph->p_offset;
+
+        return 1;
+}
+
+int parse_elf32(void *hdr, struct elf_info *info)
+{
+        Elf32_Ehdr *elf32 = hdr;
+        Elf32_Phdr *elf32ph;
+        unsigned int i;
+
+        if (!(elf32->e_ident[EI_MAG0]  == ELFMAG0       &&
+              elf32->e_ident[EI_MAG1]  == ELFMAG1       &&
+              elf32->e_ident[EI_MAG2]  == ELFMAG2       &&
+              elf32->e_ident[EI_MAG3]  == ELFMAG3       &&
+              elf32->e_ident[EI_CLASS] == ELFCLASS32    &&
+              elf32->e_ident[EI_DATA]  == ELFDATA2MSB   &&
+              elf32->e_type            == ET_EXEC       &&
+              elf32->e_machine         == EM_PPC))
+                return 0;
+
+        elf32ph = (Elf32_Phdr *) ((unsigned long)elf32 + elf32->e_phoff);
+        for (i = 0; i < elf32->e_phnum; i++, elf32ph++)
+                if (elf32ph->p_type == PT_LOAD)
+                        break;
+        if (i >= elf32->e_phnum)
+                return 0;
+
+        info->loadsize = elf32ph->p_filesz;
+        info->memsize = elf32ph->p_memsz;
+        info->elfoffset = elf32ph->p_offset;
+        return 1;
+}