From bd89f43f3254f672648ef292dff05736b339ab96 Mon Sep 17 00:00:00 2001
From: aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Fri, 26 Dec 2008 23:05:23 +0000
Subject: [PATCH] target-ppc: workaround OpenBIOS limitation

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6133 c046a42c-6fe2-441c-8c8c-71466251a162
---
 hw/mac_nvram.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/mac_nvram.c b/hw/mac_nvram.c
index 6bf666fd57..b4e9deb564 100644
--- a/hw/mac_nvram.c
+++ b/hw/mac_nvram.c
@@ -43,6 +43,8 @@ struct MacIONVRAMState {
     uint8_t *data;
 };
 
+#define DEF_SYSTEM_SIZE 0xc10
+
 /* Direct access to NVRAM */
 uint32_t macio_nvram_read (void *opaque, uint32_t addr)
 {
@@ -151,6 +153,10 @@ void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len)
     nvr->data[end++] = '\0';
 
     end = start + ((end - start + 15) & ~15);
+    /* XXX: OpenBIOS is not able to grow up a partition. Leave some space for
+       new variables. */
+    if (end < DEF_SYSTEM_SIZE)
+        end = DEF_SYSTEM_SIZE;
     OpenBIOS_finish_partition(part_header, end - start);
 
     // free partition
-- 
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