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hw/misc/iotkit-sysctl: Implement IoTKit system control element

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The Arm IoTKit includes a system control element which
provides a block of read-only ID registers and a block
of read-write control registers. Implement a minimal
version of this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180820141116.9118-9-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2018-08-24 13:17:42 +01:00
parent e2d203baba
commit 75750e4d43
6 changed files with 321 additions and 0 deletions
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49
include/hw/misc/iotkit-sysctl.h Normal file
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/*
* ARM IoTKit system control element
*
* 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 control element" which is part of the
* Arm IoTKit and documented in
* http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ecm0601256/index.html
* Specifically, it implements the "system information block" and
* "system control register" blocks.
*
* QEMU interface:
* + sysbus MMIO region 0: the system information register bank
* + sysbus MMIO region 1: the system control register bank
*/
#ifndef HW_MISC_IOTKIT_SYSCTL_H
#define HW_MISC_IOTKIT_SYSCTL_H
#include "hw/sysbus.h"
#define TYPE_IOTKIT_SYSCTL "iotkit-sysctl"
#define IOTKIT_SYSCTL(obj) OBJECT_CHECK(IoTKitSysCtl, (obj), \
TYPE_IOTKIT_SYSCTL)
typedef struct IoTKitSysCtl {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
uint32_t secure_debug;
uint32_t reset_syndrome;
uint32_t reset_mask;
uint32_t gretreg;
uint32_t initsvrtor0;
uint32_t cpuwait;
uint32_t wicctrl;
} IoTKitSysCtl;
#endif