aac63e0e6e
Add a clock input to the PL011 UART so we can compute the current baud rate and trace it. This is intended for developers who wish to use QEMU to e.g. debug their firmware or to figure out the baud rate configured by an unknown/closed source binary. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_PL011_H
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#define HW_PL011_H
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#include "hw/qdev-properties.h"
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#include "hw/sysbus.h"
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#include "chardev/char-fe.h"
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#include "qapi/error.h"
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#include "qom/object.h"
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#define TYPE_PL011 "pl011"
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OBJECT_DECLARE_SIMPLE_TYPE(PL011State, PL011)
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/* This shares the same struct (and cast macro) as the base pl011 device */
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#define TYPE_PL011_LUMINARY "pl011_luminary"
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struct PL011State {
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SysBusDevice parent_obj;
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MemoryRegion iomem;
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uint32_t readbuff;
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uint32_t flags;
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uint32_t lcr;
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uint32_t rsr;
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uint32_t cr;
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uint32_t dmacr;
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uint32_t int_enabled;
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uint32_t int_level;
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uint32_t read_fifo[16];
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uint32_t ilpr;
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uint32_t ibrd;
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uint32_t fbrd;
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uint32_t ifl;
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int read_pos;
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int read_count;
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int read_trigger;
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CharBackend chr;
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qemu_irq irq[6];
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Clock *clk;
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const unsigned char *id;
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};
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static inline DeviceState *pl011_create(hwaddr addr,
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qemu_irq irq,
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Chardev *chr)
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{
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DeviceState *dev;
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SysBusDevice *s;
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dev = qdev_new("pl011");
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s = SYS_BUS_DEVICE(dev);
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qdev_prop_set_chr(dev, "chardev", chr);
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sysbus_realize_and_unref(s, &error_fatal);
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sysbus_mmio_map(s, 0, addr);
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sysbus_connect_irq(s, 0, irq);
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return dev;
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}
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static inline DeviceState *pl011_luminary_create(hwaddr addr,
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qemu_irq irq,
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Chardev *chr)
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{
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DeviceState *dev;
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SysBusDevice *s;
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dev = qdev_new("pl011_luminary");
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s = SYS_BUS_DEVICE(dev);
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qdev_prop_set_chr(dev, "chardev", chr);
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sysbus_realize_and_unref(s, &error_fatal);
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sysbus_mmio_map(s, 0, addr);
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sysbus_connect_irq(s, 0, irq);
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return dev;
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}
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#endif
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