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| author | Andrew Baumann <Andrew.Baumann@microsoft.com> | 2016-03-16 17:06:01 +0000 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-11-29 19:49:38 -0600 |
| commit | 265bd1aa2a9e1ea337ff28be7620beabe859082b (patch) | |
| tree | cbc2b3728be35b783868129f31757448c33de0e3 /include | |
| parent | 861e8e46dd4439d4e7cba598a26a79aac3d1b6ec (diff) | |
| download | hqemu-265bd1aa2a9e1ea337ff28be7620beabe859082b.zip hqemu-265bd1aa2a9e1ea337ff28be7620beabe859082b.tar.gz | |
bcm2835_aux: add emulation of BCM2835 AUX (aka UART1) block
At present only the core UART functions (data path for tx/rx) are
implemented, which is enough for UEFI to boot. The following
features/registers are unimplemented:
* Line/modem control
* Scratch register
* Extra control
* Baudrate
* SPI interfaces
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1457467526-8840-3-git-send-email-Andrew.Baumann@microsoft.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/arm/bcm2835_peripherals.h | 2 | ||||
| -rw-r--r-- | include/hw/char/bcm2835_aux.h | 33 |
2 files changed, 35 insertions, 0 deletions
diff --git a/include/hw/arm/bcm2835_peripherals.h b/include/hw/arm/bcm2835_peripherals.h index 5d888dc..889adf5 100644 --- a/include/hw/arm/bcm2835_peripherals.h +++ b/include/hw/arm/bcm2835_peripherals.h @@ -14,6 +14,7 @@ #include "qemu-common.h" #include "exec/address-spaces.h" #include "hw/sysbus.h" +#include "hw/char/bcm2835_aux.h" #include "hw/intc/bcm2835_ic.h" #include "hw/misc/bcm2835_property.h" #include "hw/misc/bcm2835_mbox.h" @@ -33,6 +34,7 @@ typedef struct BCM2835PeripheralState { qemu_irq irq, fiq; SysBusDevice *uart0; + BCM2835AuxState aux; BCM2835ICState ic; BCM2835PropertyState property; BCM2835MboxState mboxes; diff --git a/include/hw/char/bcm2835_aux.h b/include/hw/char/bcm2835_aux.h new file mode 100644 index 0000000..42f0ee7 --- /dev/null +++ b/include/hw/char/bcm2835_aux.h @@ -0,0 +1,33 @@ +/* + * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft + * Written by Andrew Baumann + * + * This code is licensed under the GNU GPLv2 and later. + */ + +#ifndef BCM2835_AUX_H +#define BCM2835_AUX_H + +#include "hw/sysbus.h" +#include "sysemu/char.h" + +#define TYPE_BCM2835_AUX "bcm2835-aux" +#define BCM2835_AUX(obj) OBJECT_CHECK(BCM2835AuxState, (obj), TYPE_BCM2835_AUX) + +#define BCM2835_AUX_RX_FIFO_LEN 8 + +typedef struct { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + + MemoryRegion iomem; + CharDriverState *chr; + qemu_irq irq; + + uint8_t read_fifo[BCM2835_AUX_RX_FIFO_LEN]; + uint8_t read_pos, read_count; + uint8_t ier, iir; +} BCM2835AuxState; + +#endif |
