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2672a6ca72
The SSE-300 has a new PWRCTRL register at offset 0x1fc (previously reserved). This register controls accessibility of some registers in the Power Policy Units (PPUs). Since QEMU doesn't implement the PPUs, we don't need to implement any real behaviour for this register, so we just handle the UNLOCK bit which controls whether writes to the register itself are permitted and otherwise make it be reads-as-written. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210219144617.4782-17-peter.maydell@linaro.org
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
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* ARM IoTKit system control element
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*
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* Copyright (c) 2018 Linaro Limited
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* Written by Peter Maydell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 or
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* (at your option) any later version.
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*/
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/*
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* This is a model of the "system control element" which is part of the
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* Arm IoTKit and documented in
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* https://developer.arm.com/documentation/ecm0601256/latest
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* Specifically, it implements the "system information block" and
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* "system control register" blocks.
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*
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* QEMU interface:
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* + QOM property "sse-version": indicates which SSE version this is part of
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* (used to identify whether to provide SSE-200-only registers, etc)
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* + sysbus MMIO region 0: the system information register bank
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* + sysbus MMIO region 1: the system control register bank
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*/
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#ifndef HW_MISC_IOTKIT_SYSCTL_H
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#define HW_MISC_IOTKIT_SYSCTL_H
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#include "hw/sysbus.h"
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#include "qom/object.h"
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#define TYPE_IOTKIT_SYSCTL "iotkit-sysctl"
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OBJECT_DECLARE_SIMPLE_TYPE(IoTKitSysCtl, IOTKIT_SYSCTL)
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struct IoTKitSysCtl {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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MemoryRegion iomem;
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uint32_t secure_debug;
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uint32_t reset_syndrome;
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uint32_t reset_mask;
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uint32_t gretreg;
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uint32_t initsvtor0;
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uint32_t cpuwait;
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uint32_t wicctrl;
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uint32_t scsecctrl;
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uint32_t fclk_div;
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uint32_t sysclk_div;
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uint32_t clock_force;
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uint32_t initsvtor1;
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uint32_t nmi_enable;
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uint32_t ewctrl;
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uint32_t pwrctrl;
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uint32_t pdcm_pd_sys_sense;
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uint32_t pdcm_pd_sram0_sense;
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uint32_t pdcm_pd_sram1_sense;
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uint32_t pdcm_pd_sram2_sense;
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uint32_t pdcm_pd_sram3_sense;
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/* Properties */
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uint32_t sse_version;
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uint32_t cpuwait_rst;
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uint32_t initsvtor0_rst;
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uint32_t initsvtor1_rst;
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};
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#endif
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