From patchwork Fri Jul  9 05:03:42 2010
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Subject: [12/14] Allocate tftp temporary buffer from top of address space
Date: Thu, 08 Jul 2010 19:03:42 -0000
From: Anton Blanchard <anton@samba.org>
X-Patchwork-Id: 58335
Message-Id: <20100709050342.440075772@samba.org>
To: yaboot-devel@lists.ozlabs.org

We want the kernel and initrd to be as low as possible in the
address space. Allocate the temporary tftp region at the top
of the address space.

Signed-off-by: Anton Blanchard <anton@samba.org>

---


Index: yaboot/second/fs_of.c
===================================================================
--- yaboot.orig/second/fs_of.c	2010-07-08 14:23:24.000000000 +1000
+++ yaboot/second/fs_of.c	2010-07-08 14:25:44.000000000 +1000
@@ -44,7 +44,6 @@
 #include "errors.h"
 #include "debug.h"
 
-#define LOAD_BUFFER_POS		0x1000000
 #define LOAD_BUFFER_SIZE	0x1000000
 
 static int of_open(struct boot_file_t* file, const char* dev_name,
@@ -166,8 +165,7 @@ of_net_open(struct boot_file_t* file, co
      }
 
 
-     file->buffer = prom_claim_chunk((void *)LOAD_BUFFER_POS,
-                                     LOAD_BUFFER_SIZE, 0);
+     file->buffer = prom_claim_chunk_top(LOAD_BUFFER_SIZE, 0);
      if (file->buffer == (void *)-1) {
 	  prom_printf("Can't claim memory for TFTP download\n");
 	  prom_close(file->of_device);