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-rw-r--r--include/asm-generic/vmlinux.lds.h3
-rw-r--r--init/initramfs.c9
-rw-r--r--usr/initramfs_data.S16
3 files changed, 17 insertions, 11 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 030a954ed292..0c6387d6a6ae 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -633,7 +633,8 @@
. = ALIGN(PAGE_SIZE); \
VMLINUX_SYMBOL(__initramfs_start) = .; \
*(.init.ramfs) \
- VMLINUX_SYMBOL(__initramfs_end) = .;
+ . = ALIGN(8); \
+ *(.init.ramfs.info)
#else
#define INIT_RAM_FS
#endif
diff --git a/init/initramfs.c b/init/initramfs.c
index 4b9c20205092..371c3da64ad3 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -483,7 +483,8 @@ static int __init retain_initrd_param(char *str)
}
__setup("retain_initrd", retain_initrd_param);
-extern char __initramfs_start[], __initramfs_end[];
+extern char __initramfs_start[];
+extern unsigned long __initramfs_size;
#include <linux/initrd.h>
#include <linux/kexec.h>
@@ -570,8 +571,7 @@ static void __init clean_rootfs(void)
static int __init populate_rootfs(void)
{
- char *err = unpack_to_rootfs(__initramfs_start,
- __initramfs_end - __initramfs_start);
+ char *err = unpack_to_rootfs(__initramfs_start, __initramfs_size);
if (err)
panic(err); /* Failed to decompress INTERNAL initramfs */
if (initrd_start) {
@@ -585,8 +585,7 @@ static int __init populate_rootfs(void)
return 0;
} else {
clean_rootfs();
- unpack_to_rootfs(__initramfs_start,
- __initramfs_end - __initramfs_start);
+ unpack_to_rootfs(__initramfs_start, __initramfs_size);
}
printk(KERN_INFO "rootfs image is not initramfs (%s)"
"; looks like an initrd\n", err);
diff --git a/usr/initramfs_data.S b/usr/initramfs_data.S
index 49a545fea120..b9efed5e35cc 100644
--- a/usr/initramfs_data.S
+++ b/usr/initramfs_data.S
@@ -11,11 +11,7 @@
-T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o
ld -m elf_i386 -r -o built-in.o initramfs_data.o
- initramfs_data.scr looks like this:
-SECTIONS
-{
- .init.ramfs : { *(.data) }
-}
+ For including the .init.ramfs sections, see include/asm-generic/vmlinux.lds.
The above example is for i386 - the parameters vary from architectures.
Eventually look up LDFLAGS_BLOB in an older version of the
@@ -28,4 +24,14 @@ SECTIONS
#include <linux/stringify.h>
.section .init.ramfs,"a"
+__irf_start:
.incbin __stringify(INITRAMFS_IMAGE)
+__irf_end:
+.section .init.ramfs.info,"a"
+.globl __initramfs_size
+__initramfs_size:
+#ifdef CONFIG_32BIT
+ .long __irf_end - __irf_start
+#else
+ .quad __irf_end - __irf_start
+#endif

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