@@ -257,6 +257,8 @@ vmz="$tmpdir/`basename \"$kernel\"`.$ext"
if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
+ strip_size=$(stat -c %s $vmz.$$)
+
if [ -n "$gzip" ]; then
gzip -n -f -9 "$vmz.$$"
fi
@@ -266,6 +268,24 @@ if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
else
vmz="$vmz.$$"
fi
+else
+ # Calculate the vmlinux.strip size
+ ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
+ strip_size=$(stat -c %s $vmz.$$)
+ rm -f $vmz.$$
+fi
+
+# Round the size to next higher MB limit
+round_size=$(((strip_size + 0xfffff) & 0xfff00000))
+
+round_size=0x$(printf "%x\n" $round_size)
+link_addr=$(printf "%d\n" $link_address)
+
+if [ $link_addr -lt $strip_size ]; then
+ echo "WARN: Uncompressed kernel size(0x$(printf "%x\n" $strip_size))" \
+ " exceeds the address of the wrapper($link_address)"
+ echo "WARN: Fixing the link_address to ($round_size))"
+ link_address=$round_size
fi
vmz="$vmz$gzip"
The wrapper code which uncompresses the kernel in case of a 'ppc' boot is by default loaded at 0x00400000 and the kernel will be uncompressed to fit the location 0-0x00400000. But with dynamic relocations, the size of the kernel may exceed 0x00400000(4M). This would cause an overlap of the uncompressed kernel and the boot wrapper, causing a failure in boot. The message looks like : zImage starting: loaded at 0x00400000 (sp: 0x0065ffb0) Allocating 0x5ce650 bytes for kernel ... Insufficient memory for kernel at address 0! (_start=00400000, uncompressed size=00591a20) This patch shifts the load address of the boot wrapper code to the next higher MB, according to the size of the uncompressed vmlinux. Signed-off-by: Suzuki K. Poulose <suzuki@in.ibm.com> --- arch/powerpc/boot/wrapper | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-)