Allocate tftp temporary buffer from top of address space

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>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

diff --git a/second/fs_of.c b/second/fs_of.c
index 5961cfecd57a09b45702444f7628382541427aed..77113b14ed8bb68f1f8e83a8aacda769c2510d74 100644 (file)
--- a/second/fs_of.c
+++ b/second/fs_of.c
@@ -44,7 +44,6 @@
 #include "errors.h"
 #include "debug.h"
 
-#define LOAD_BUFFER_POS                0x1000000
 #define LOAD_BUFFER_SIZE       0x1800000
 
 static int of_open(struct boot_file_t* file,
@@ -208,8 +207,7 @@ of_net_open(struct boot_file_t* file,
      }
 
 
-     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);