net/dp8393x: fix hardware reset

Documentation is not clear of what happens when doing a hardware reset,
but firmware expect all registers to be zero unless specified otherwise.

This fixes reboot on MIPS Magnum.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>

diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
index ff633f76a03947de1431fc1d2c178438216b7801..cd889bce86be53c637d95949cea0598b6d3f8567 100644 (file)
--- a/hw/net/dp8393x.c
+++ b/hw/net/dp8393x.c
@@ -786,6 +786,7 @@ static void dp8393x_reset(DeviceState *dev)
     dp8393xState *s = DP8393X(dev);
     timer_del(s->watchdog);
 
+    memset(s->regs, 0, sizeof(s->regs));
     s->regs[SONIC_CR] = SONIC_CR_RST | SONIC_CR_STP | SONIC_CR_RXDIS;
     s->regs[SONIC_DCR] &= ~(SONIC_DCR_EXBUS | SONIC_DCR_LBR);
     s->regs[SONIC_RCR] &= ~(SONIC_RCR_LB0 | SONIC_RCR_LB1 | SONIC_RCR_BRD | SONIC_RCR_RNT);