[PATCH v2 04/14] hw/arm/zynq-devcfg: Prevent unintended unlock during initialization

[Corvin Köhne]

From: YannickV <y.vos...@beckhoff.com>

During the emulation startup, all registers are reset, which triggers the
`r_unlock_post_write` function with a value of 0. This led to an
unintended memory access disable, making the devcfg unusable.

During startup, the memory space no longer gets locked.

Signed-off-by: Yannick Voßen <y.vos...@beckhoff.com>
---
 hw/dma/xlnx-zynq-devcfg.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/dma/xlnx-zynq-devcfg.c b/hw/dma/xlnx-zynq-devcfg.c
index b838c1c0d0..f28d0015e6 100644
--- a/hw/dma/xlnx-zynq-devcfg.c
+++ b/hw/dma/xlnx-zynq-devcfg.c
@@ -221,7 +221,9 @@ static void r_unlock_post_write(RegisterInfo *reg, uint64_t 
val)
 {
     XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(reg->opaque);
     const char *device_prefix = object_get_typename(OBJECT(s));
-
+    if (device_is_in_reset(DEVICE(s))) {
+        return;
+    }
     if (val == R_UNLOCK_MAGIC) {
         DB_PRINT("successful unlock\n");
         s->regs[R_CTRL] |= R_CTRL_PCAP_PR_MASK;
-- 
2.50.1