On Feb 3, 2009, at 18:55, Alexandros C. Couloumbis wrote:

> the linker though produces the following error:
>
> fs/built-in.o: In function `yaffs_internal_read_super':
> yaffs_fs.c:(.text.yaffs_internal_read_super+0x7c8): undefined  
> reference
> to `__udivdi3'
> yaffs_fs.c:(.text.yaffs_internal_read_super+0x7c8): relocation  
> truncated
> to fit: R_MIPS_26 against `__udivdi3'
> make[5]: *** [vmlinux] Error 1

there's no 64bit division in the ARM kernel; try this patch to  
yaffs_fs.c.  (line numbers may vary.)


@@ -1875,7 +2062,13 @@

	/* Set up the memory size parameters.... */

+#ifdef __LINUX_ARM_ARCH__
+	{ uint64_t res = mtd->size;
+	  do_div (res, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
+	  nBlocks = res; }
+#else
	nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+#endif
	dev->startBlock = 0;
	dev->endBlock = nBlocks - 1;
	dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
@@ -1901,7 +2094,13 @@
		dev->totalBytesPerChunk = mtd->oobblock;
		dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
#endif
+#ifdef __LINUX_ARM_ARCH__
+		{ uint64_t res = mtd->size;
+		  do_div (res, mtd->erasesize);
+		  nBlocks = res; }
+#else
		nBlocks = mtd->size / mtd->erasesize;
+#endif

		dev->startBlock = 0;
		dev->endBlock = nBlocks - 1;


Regards
Salvador Abreu