Update of /cvsroot/blob/blob/src/blob
In directory sc8-pr-cvs1:/tmp/cvs-serv17633/src/blob
Modified Files:
linux.c
Log Message:
Fix the physical ramdisk location bug by issueing an ATAG_INITRD2 node.
The comment tells the whole story.
Index: linux.c
===================================================================
RCS file: /cvsroot/blob/blob/src/blob/linux.c,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -d -r1.16 -r1.17
--- linux.c 24 Jan 2003 09:31:42 -0000 1.16
+++ linux.c 7 Feb 2003 02:46:44 -0000 1.17
@@ -179,6 +179,23 @@
params->u.initrd.size = RAMDISK_FLASH_LEN;
params = tag_next(params);
+
+ /* Uhoh, we got it all wrong. ATAG_INITRD takes a *virtual* address
+ * not a physical address, so it nicely breaks on PXA machines.
+ * This was fixed in linux-2.4.18-rmk6, which added the
+ * ATAG_INITRD2 node. This one really takes a physical address.
+ * Pre 2.4.18-rmk6 SA11x0 kernels will just ignore this node and
+ * skip over it. Post 2.4.18-rmk6 kernels will parse both the
+ * INITRD and the INITRD2 node, but the latter will supersede
+ * the former and everything will be all right. -- Erik
+ */
+ params->hdr.tag = ATAG_INITRD2;
+ params->hdr.size = tag_size(tag_initrd);
+
+ params->u.initrd.start = RAMDISK_RAM_BASE;
+ params->u.initrd.size = RAMDISK_FLASH_LEN;
+
+ params = tag_next(params);
}
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