From 0fbe394a64ac9ceb13a98f43d078cd48d3006498 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 25 Oct 2019 13:01:14 +0200 Subject: [PATCH] hw/misc/grlib_ahb_apb_pnp: Fix 8-bit accesses MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The Plug & Play region of the AHB/APB bridge can be accessed by various word size, however the implementation is clearly restricted to 32-bit: static uint64_t grlib_apb_pnp_read(void *opaque, hwaddr offset, unsigned size) { APBPnp *apb_pnp = GRLIB_APB_PNP(opaque); return apb_pnp->regs[offset >> 2]; } Set the MemoryRegionOps::impl min/max fields to 32-bit, so memory.c::access_with_adjusted_size() can adjust when the access is not 32-bit. This is required to run RTEMS on leon3, the grlib scanning functions do byte accesses. Reported-by: Jiri Gaisler Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: KONRAD Frederic Message-Id: <20191025110114.27091-3-philmd@redhat.com> Signed-off-by: Laurent Vivier --- hw/misc/grlib_ahb_apb_pnp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/misc/grlib_ahb_apb_pnp.c b/hw/misc/grlib_ahb_apb_pnp.c index f3c015d2c3..e230e25363 100644 --- a/hw/misc/grlib_ahb_apb_pnp.c +++ b/hw/misc/grlib_ahb_apb_pnp.c @@ -242,6 +242,10 @@ static const MemoryRegionOps grlib_apb_pnp_ops = { .read = grlib_apb_pnp_read, .write = grlib_apb_pnp_write, .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, }; static void grlib_apb_pnp_realize(DeviceState *dev, Error **errp) -- 2.11.4.GIT