On 28/07/13 13:35, Paolo Bonzini wrote:
The I/O port variant of fw_cfg is used by sparc64, which is a big-endian machine. Firmware swaps bytes before sending them to fw_cfg, so we need to unswap them in the device.This is only used on sparc64 and on (little-endian) x86, so it does not affect any other target. 32-bit Sparc and PPC all use memory-mapped fw_cfg. Reported-by: Mark Cave-Ayland<mark.cave-ayl...@ilande.co.uk> Signed-off-by: Paolo Bonzini<pbonz...@redhat.com> --- hw/nvram/fw_cfg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 0a35015..d0820e5 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -324,7 +324,7 @@ static const MemoryRegionOps fw_cfg_data_mem_ops = { static const MemoryRegionOps fw_cfg_comb_mem_ops = { .read = fw_cfg_comb_read, .write = fw_cfg_comb_write, - .endianness = DEVICE_NATIVE_ENDIAN, + .endianness = DEVICE_LITTLE_ENDIAN, .valid.accepts = fw_cfg_comb_valid, };
Hi Paolo, I can confirm that this fixes SPARC64 boot for me - thanks! Tested-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk> ATB, Mark.
