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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/h8300/lib/romfs.S
downloadconfigs-2.6.12-rc2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/h8300/lib/romfs.S')
-rw-r--r--arch/h8300/lib/romfs.S58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/h8300/lib/romfs.S b/arch/h8300/lib/romfs.S
new file mode 100644
index 00000000000..b72f93a47e3
--- /dev/null
+++ b/arch/h8300/lib/romfs.S
@@ -0,0 +1,58 @@
+/* romfs move to __ebss */
+
+#include <asm/linkage.h>
+#include <linux/config.h>
+
+#if defined(__H8300H__)
+ .h8300h
+#endif
+#if defined(__H8300S__)
+ .h8300s
+#endif
+
+#define BLKOFFSET 512
+
+ .text
+.globl __move_romfs
+_romfs_sig_len = 8
+
+__move_romfs:
+ mov.l #__sbss,er0
+ mov.l #_romfs_sig,er1
+ mov.b #_romfs_sig_len,r3l
+1: /* check romfs image */
+ mov.b @er0+,r2l
+ mov.b @er1+,r2h
+ cmp.b r2l,r2h
+ bne 2f
+ dec.b r3l
+ bne 1b
+
+ /* find romfs image */
+ mov.l @__sbss+8,er0 /* romfs length(be) */
+ mov.l #__sbss,er1
+ add.l er0,er1 /* romfs image end */
+ mov.l #__ebss,er2
+ add.l er0,er2 /* distination address */
+#if defined(CONFIG_INTELFLASH)
+ add.l #BLKOFFSET,er2
+#endif
+ adds #2,er0
+ adds #1,er0
+ shlr er0
+ shlr er0 /* transfer length */
+1:
+ mov.l @er1,er3 /* copy image */
+ mov.l er3,@er2
+ subs #4,er1
+ subs #4,er2
+ dec.l #1,er0
+ bpl 1b
+2:
+ rts
+
+ .section .rodata
+_romfs_sig:
+ .ascii "-rom1fs-"
+
+ .end