Add more helpful debug information to the cadence UART.
Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
---
hw/cadence_uart.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/hw/cadence_uart.c b/hw/cadence_uart.c
index f8afc4e..483a316 100644
--- a/hw/cadence_uart.c
+++ b/hw/cadence_uart.c
@@ -359,7 +359,7 @@ static void uart_write(void *opaque, target_phys_addr_t
offset,
{
UartState *s = (UartState *)opaque;
- DB_PRINT(" offset:%x data:%08x\n", offset, (unsigned)value);
+ DB_PRINT(" offset:%x data:%08x\n", (unsigned)offset, (unsigned)value);
offset >>= 2;
switch (offset) {
case R_IER: /* ier (wts imr) */
@@ -405,12 +405,15 @@ static uint64_t uart_read(void *opaque,
target_phys_addr_t offset,
offset >>= 2;
if (offset >= R_MAX) {
- return 0;
+ c = 0;
} else if (offset == R_TX_RX) {
uart_read_rx_fifo(s, &c);
- return c;
+ } else {
+ c = s->r[offset];
}
- return s->r[offset];
+
+ DB_PRINT(" offset:%x data:%08x\n", (unsigned)(offset << 2), (unsigned)c);
+ return c;
}
static const MemoryRegionOps uart_ops = {
--
1.7.0.4
