@@ -67,6 +67,7 @@ obj-$(CONFIG_TZ_MPC) += tz-mpc.o
obj-$(CONFIG_TZ_PPC) += tz-ppc.o
obj-$(CONFIG_IOTKIT_SECCTL) += iotkit-secctl.o
obj-$(CONFIG_IOTKIT_SYSCTL) += iotkit-sysctl.o
+obj-$(CONFIG_IOTKIT_SYSINFO) += iotkit-sysinfo.o
obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o
new file mode 100644
@@ -0,0 +1,37 @@
+/*
+ * ARM IoTKit system information block
+ *
+ * Copyright (c) 2018 Linaro Limited
+ * Written by Peter Maydell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 or
+ * (at your option) any later version.
+ */
+
+/*
+ * This is a model of the "system information block" which is part of the
+ * Arm IoTKit and documented in
+ * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ecm0601256/index.html
+ * QEMU interface:
+ * + sysbus MMIO region 0: the system information register bank
+ */
+
+#ifndef HW_MISC_IOTKIT_SYSINFO_H
+#define HW_MISC_IOTKIT_SYSINFO_H
+
+#include "hw/sysbus.h"
+
+#define TYPE_IOTKIT_SYSINFO "iotkit-sysinfo"
+#define IOTKIT_SYSINFO(obj) OBJECT_CHECK(IoTKitSysInfo, (obj), \
+ TYPE_IOTKIT_SYSINFO)
+
+typedef struct IoTKitSysInfo {
+ /*< private >*/
+ SysBusDevice parent_obj;
+
+ /*< public >*/
+ MemoryRegion iomem;
+} IoTKitSysInfo;
+
+#endif
new file mode 100644
@@ -0,0 +1,128 @@
+/*
+ * ARM IoTKit system information block
+ *
+ * Copyright (c) 2018 Linaro Limited
+ * Written by Peter Maydell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 or
+ * (at your option) any later version.
+ */
+
+/*
+ * This is a model of the "system information block" which is part of the
+ * Arm IoTKit and documented in
+ * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ecm0601256/index.html
+ * It consists of 2 read-only version/config registers, plus the
+ * usual ID registers.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "trace.h"
+#include "qapi/error.h"
+#include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
+#include "hw/registerfields.h"
+#include "hw/misc/iotkit-sysinfo.h"
+
+REG32(SYS_VERSION, 0x0)
+REG32(SYS_CONFIG, 0x4)
+REG32(PID4, 0xfd0)
+REG32(PID5, 0xfd4)
+REG32(PID6, 0xfd8)
+REG32(PID7, 0xfdc)
+REG32(PID0, 0xfe0)
+REG32(PID1, 0xfe4)
+REG32(PID2, 0xfe8)
+REG32(PID3, 0xfec)
+REG32(CID0, 0xff0)
+REG32(CID1, 0xff4)
+REG32(CID2, 0xff8)
+REG32(CID3, 0xffc)
+
+/* PID/CID values */
+static const int sysinfo_id[] = {
+ 0x04, 0x00, 0x00, 0x00, /* PID4..PID7 */
+ 0x58, 0xb8, 0x0b, 0x00, /* PID0..PID3 */
+ 0x0d, 0xf0, 0x05, 0xb1, /* CID0..CID3 */
+};
+
+static uint64_t iotkit_sysinfo_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ uint64_t r;
+
+ switch (offset) {
+ case A_SYS_VERSION:
+ r = 0x41743;
+ break;
+
+ case A_SYS_CONFIG:
+ r = 0x31;
+ break;
+ case A_PID4 ... A_CID3:
+ r = sysinfo_id[(offset - A_PID4) / 4];
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "IoTKit SysInfo read: bad offset %x\n", (int)offset);
+ r = 0;
+ break;
+ }
+ trace_iotkit_sysinfo_read(offset, r, size);
+ return r;
+}
+
+static void iotkit_sysinfo_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+ trace_iotkit_sysinfo_write(offset, value, size);
+
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "IoTKit SysInfo: write to RO offset 0x%x\n", (int)offset);
+}
+
+static const MemoryRegionOps iotkit_sysinfo_ops = {
+ .read = iotkit_sysinfo_read,
+ .write = iotkit_sysinfo_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ /* byte/halfword accesses are just zero-padded on reads and writes */
+ .impl.min_access_size = 4,
+ .impl.max_access_size = 4,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 4,
+};
+
+static void iotkit_sysinfo_init(Object *obj)
+{
+ SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+ IoTKitSysInfo *s = IOTKIT_SYSINFO(obj);
+
+ memory_region_init_io(&s->iomem, obj, &iotkit_sysinfo_ops,
+ s, "iotkit-sysinfo", 0x1000);
+ sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static void iotkit_sysinfo_class_init(ObjectClass *klass, void *data)
+{
+ /*
+ * This device has no guest-modifiable state and so it
+ * does not need a reset function or VMState.
+ */
+}
+
+static const TypeInfo iotkit_sysinfo_info = {
+ .name = TYPE_IOTKIT_SYSINFO,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(IoTKitSysInfo),
+ .instance_init = iotkit_sysinfo_init,
+ .class_init = iotkit_sysinfo_class_init,
+};
+
+static void iotkit_sysinfo_register_types(void)
+{
+ type_register_static(&iotkit_sysinfo_info);
+}
+
+type_init(iotkit_sysinfo_register_types);
@@ -541,6 +541,8 @@ F: hw/arm/iotkit.c
F: include/hw/arm/iotkit.h
F: hw/misc/iotkit-sysctl.c
F: include/hw/misc/iotkit-sysctl.h
+F: hw/misc/iotkit-sysinfo.c
+F: include/hw/misc/iotkit-sysinfo.h
Musicpal
M: Jan Kiszka <jan.kiszka@web.de>
@@ -115,6 +115,7 @@ CONFIG_TZ_PPC=y
CONFIG_IOTKIT=y
CONFIG_IOTKIT_SECCTL=y
CONFIG_IOTKIT_SYSCTL=y
+CONFIG_IOTKIT_SYSINFO=y
CONFIG_VERSATILE=y
CONFIG_VERSATILE_PCI=y