@@ -37,6 +37,7 @@ obj-$(CONFIG_IMX) += imx6_src.o
obj-$(CONFIG_IMX) += imx7_ccm.o
obj-$(CONFIG_IMX) += imx2_wdt.o
obj-$(CONFIG_IMX) += imx7_snvs.o
+obj-$(CONFIG_IMX) += imx7_iomuxc.o
obj-$(CONFIG_MILKYMIST) += milkymist-hpdmc.o
obj-$(CONFIG_MILKYMIST) += milkymist-pfpu.o
obj-$(CONFIG_MAINSTONE) += mst_fpga.o
new file mode 100644
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2017, Impinj, Inc.
+ *
+ * i.MX7 IOMUXC block emulation code
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/misc/imx7_iomuxc.h"
+#include "qemu/log.h"
+
+static void imx7_iomuxc_reset(DeviceState *dev)
+{
+ IMX7IOMUXCState *s = IMX7_IOMUXC(dev);
+
+ memset(s->regs, 0, sizeof(s->regs));
+}
+
+static uint64_t imx7_iomuxc_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ IMX7IOMUXCState *s = opaque;
+ return s->regs[offset / sizeof(uint32_t)];
+}
+
+static void imx7_iomuxc_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+ IMX7IOMUXCState *s = opaque;
+ s->regs[offset / sizeof(uint32_t)] = value;
+}
+
+static const struct MemoryRegionOps imx7_iomuxc_ops = {
+ .read = imx7_iomuxc_read,
+ .write = imx7_iomuxc_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ /*
+ * Our device would not work correctly if the guest was doing
+ * unaligned access. This might not be a limitation on the real
+ * device but in practice there is no reason for a guest to access
+ * this device unaligned.
+ */
+ .min_access_size = 4,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+};
+
+static void imx7_iomuxc_init(Object *obj)
+{
+ SysBusDevice *sd = SYS_BUS_DEVICE(obj);
+ IMX7IOMUXCState *s = IMX7_IOMUXC(obj);
+
+ memory_region_init_io(&s->iomem,
+ obj,
+ &imx7_iomuxc_ops,
+ s,
+ TYPE_IMX7_IOMUXC ".iomem",
+ sizeof(s->regs));
+ sysbus_init_mmio(sd, &s->iomem);
+}
+
+static const VMStateDescription vmstate_imx7_iomuxc = {
+ .name = TYPE_IMX7_IOMUXC,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(regs, IMX7IOMUXCState, IOMUXC_NUM),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static void imx7_iomuxc_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = imx7_iomuxc_reset;
+ dc->vmsd = &vmstate_imx7_iomuxc;
+ dc->desc = "i.MX IOMUXC Module";
+}
+
+static const TypeInfo imx7_iomuxc_info = {
+ .name = TYPE_IMX7_IOMUXC,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(IMX7IOMUXCState),
+ .instance_init = imx7_iomuxc_init,
+ .class_init = imx7_iomuxc_class_init,
+};
+
+static void imx7_iomuxc_register_type(void)
+{
+ type_register_static(&imx7_iomuxc_info);
+}
+type_init(imx7_iomuxc_register_type)
new file mode 100644
@@ -0,0 +1,22 @@
+#ifndef IMX7_IOMUXC_H
+#define IMX7_IOMUXC_H
+
+#include "hw/sysbus.h"
+
+enum IMX7IOMUXCRegisters {
+ IOMUXC_NUM = 0x740 / sizeof(uint32_t),
+};
+
+typedef struct IMX7IOMUXCState {
+ /*< private >*/
+ SysBusDevice parent_obj;
+
+ /*< public >*/
+ MemoryRegion iomem;
+ uint32_t regs[IOMUXC_NUM];
+} IMX7IOMUXCState;
+
+#define TYPE_IMX7_IOMUXC "imx7-iomuxc"
+#define IMX7_IOMUXC(obj) OBJECT_CHECK(IMX7IOMUXCState, (obj), TYPE_IMX7_IOMUXC)
+
+#endif /* IMX7_IOMUXC_H */
Add minimal code needed to allow upstream Linux guest to boot. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> --- hw/misc/Makefile.objs | 1 + hw/misc/imx7_iomuxc.c | 99 +++++++++++++++++++++++++++++++++++++++++++ include/hw/misc/imx7_iomuxc.h | 22 ++++++++++ 3 files changed, 122 insertions(+) create mode 100644 hw/misc/imx7_iomuxc.c create mode 100644 include/hw/misc/imx7_iomuxc.h