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authorH. Peter Anvin <hpa@linux.intel.com>2012-10-01 00:23:52 +0200
committerH. Peter Anvin <hpa@linux.intel.com>2012-10-01 03:02:20 +0200
commite6459606b04e6385ccd3c2060fc10f78a92c7700 (patch)
treed89592d1a11147c46fa72795e99ca2bc8726f58a /include
parentLinux 3.6-rc7 (diff)
downloadlinux-e6459606b04e6385ccd3c2060fc10f78a92c7700.tar.xz
linux-e6459606b04e6385ccd3c2060fc10f78a92c7700.zip
lib: Add early cpio decoder
Add a simple cpio decoder without library dependencies for the purpose of extracting components from the initramfs blob for early kernel uses. Intended consumers so far are microcode and ACPI override. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1349043837-22659-2-git-send-email-trenn@suse.de Cc: Len Brown <lenb@kernel.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/earlycpio.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/earlycpio.h b/include/linux/earlycpio.h
new file mode 100644
index 000000000000..111f46d83d00
--- /dev/null
+++ b/include/linux/earlycpio.h
@@ -0,0 +1,17 @@
+#ifndef _LINUX_EARLYCPIO_H
+#define _LINUX_EARLYCPIO_H
+
+#include <linux/types.h>
+
+#define MAX_CPIO_FILE_NAME 18
+
+struct cpio_data {
+ void *data;
+ size_t size;
+ char name[MAX_CPIO_FILE_NAME];
+};
+
+struct cpio_data find_cpio_data(const char *path, void *data, size_t len,
+ long *offset);
+
+#endif /* _LINUX_EARLYCPIO_H */