hw/arm/digic: add UART support

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1387188908-754-5-git-send-email-antonynpavlov@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 49 insertions, 0 deletions

diff --git a/include/hw/arm/digic.h b/include/hw/arm/digic.h
index 177a06d..a739d6a 100644
--- a/include/hw/arm/digic.h
+++ b/include/hw/arm/digic.h
@@ -21,6 +21,7 @@
 #include "cpu.h"
 
 #include "hw/timer/digic-timer.h"
+#include "hw/char/digic-uart.h"
 
 #define TYPE_DIGIC "digic"
 
@@ -36,6 +37,7 @@ typedef struct DigicState {
     ARMCPU cpu;
 
     DigicTimerState timer[DIGIC4_NB_TIMERS];
+    DigicUartState uart;
 } DigicState;
 
 #endif /* HW_ARM_DIGIC_H */
diff --git a/include/hw/char/digic-uart.h b/include/hw/char/digic-uart.h
new file mode 100644
index 0000000..ef83a30
--- /dev/null
+++ b/include/hw/char/digic-uart.h
@@ -0,0 +1,47 @@
+/*
+ * Canon DIGIC UART block declarations.
+ *
+ * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef HW_CHAR_DIGIC_UART_H
+#define HW_CHAR_DIGIC_UART_H
+
+#include "hw/sysbus.h"
+#include "qemu/typedefs.h"
+
+#define TYPE_DIGIC_UART "digic-uart"
+#define DIGIC_UART(obj) \
+    OBJECT_CHECK(DigicUartState, (obj), TYPE_DIGIC_UART)
+
+enum {
+    R_TX = 0x00,
+    R_RX,
+    R_ST = (0x14 >> 2),
+    R_MAX
+};
+
+typedef struct DigicUartState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+
+    MemoryRegion regs_region;
+    CharDriverState *chr;
+
+    uint32_t reg_rx;
+    uint32_t reg_st;
+} DigicUartState;
+
+#endif /* HW_CHAR_DIGIC_UART_H */