159 lines
5.0 KiB
C
159 lines
5.0 KiB
C
/*
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* ARM SSE (Subsystems for Embedded): IoTKit
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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 Arm "Subsystems for Embedded" family of
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* hardware, which include the IoT Kit and the SSE-050, SSE-100 and
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* SSE-200. Currently we model only the Arm IoT Kit which is documented in
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* http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ecm0601256/index.html
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* It contains:
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* a Cortex-M33
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* the IDAU
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* some timers and watchdogs
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* two peripheral protection controllers
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* a memory protection controller
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* a security controller
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* a bus fabric which arranges that some parts of the address
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* space are secure and non-secure aliases of each other
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*
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* QEMU interface:
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* + QOM property "memory" is a MemoryRegion containing the devices provided
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* by the board model.
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* + QOM property "MAINCLK" is the frequency of the main system clock
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* + QOM property "EXP_NUMIRQ" sets the number of expansion interrupts
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* + Named GPIO inputs "EXP_IRQ" 0..n are the expansion interrupts, which
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* are wired to the NVIC lines 32 .. n+32
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* + sysbus MMIO region 0 is the "AHB Slave Expansion" which allows
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* bus master devices in the board model to make transactions into
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* all the devices and memory areas in the IoTKit
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* Controlling up to 4 AHB expansion PPBs which a system using the IoTKit
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* might provide:
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* + named GPIO outputs apb_ppcexp{0,1,2,3}_nonsec[0..15]
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* + named GPIO outputs apb_ppcexp{0,1,2,3}_ap[0..15]
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* + named GPIO outputs apb_ppcexp{0,1,2,3}_irq_enable
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* + named GPIO outputs apb_ppcexp{0,1,2,3}_irq_clear
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* + named GPIO inputs apb_ppcexp{0,1,2,3}_irq_status
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* Controlling each of the 4 expansion AHB PPCs which a system using the IoTKit
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* might provide:
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* + named GPIO outputs ahb_ppcexp{0,1,2,3}_nonsec[0..15]
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* + named GPIO outputs ahb_ppcexp{0,1,2,3}_ap[0..15]
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* + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_enable
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* + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_clear
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* + named GPIO inputs ahb_ppcexp{0,1,2,3}_irq_status
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* Controlling each of the 16 expansion MPCs which a system using the IoTKit
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* might provide:
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* + named GPIO inputs mpcexp_status[0..15]
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* Controlling each of the 16 expansion MSCs which a system using the IoTKit
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* might provide:
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* + named GPIO inputs mscexp_status[0..15]
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* + named GPIO outputs mscexp_clear[0..15]
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* + named GPIO outputs mscexp_ns[0..15]
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*/
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#ifndef ARMSSE_H
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#define ARMSSE_H
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#include "hw/sysbus.h"
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#include "hw/arm/armv7m.h"
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#include "hw/misc/iotkit-secctl.h"
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#include "hw/misc/tz-ppc.h"
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#include "hw/misc/tz-mpc.h"
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#include "hw/timer/cmsdk-apb-timer.h"
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#include "hw/timer/cmsdk-apb-dualtimer.h"
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#include "hw/watchdog/cmsdk-apb-watchdog.h"
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#include "hw/misc/iotkit-sysctl.h"
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#include "hw/misc/iotkit-sysinfo.h"
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#include "hw/or-irq.h"
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#include "hw/core/split-irq.h"
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#define TYPE_ARMSSE "arm-sse"
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#define ARMSSE(obj) OBJECT_CHECK(ARMSSE, (obj), TYPE_ARMSSE)
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/*
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* These type names are for specific IoTKit subsystems; other than
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* instantiating them, code using these devices should always handle
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* them via the ARMSSE base class, so they have no IOTKIT() etc macros.
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*/
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#define TYPE_IOTKIT "iotkit"
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/* We have an IRQ splitter and an OR gate input for each external PPC
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* and the 2 internal PPCs
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*/
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#define NUM_EXTERNAL_PPCS (IOTS_NUM_AHB_EXP_PPC + IOTS_NUM_APB_EXP_PPC)
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#define NUM_PPCS (NUM_EXTERNAL_PPCS + 2)
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typedef struct ARMSSE {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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ARMv7MState armv7m;
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IoTKitSecCtl secctl;
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TZPPC apb_ppc0;
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TZPPC apb_ppc1;
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TZMPC mpc;
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CMSDKAPBTIMER timer0;
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CMSDKAPBTIMER timer1;
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CMSDKAPBTIMER s32ktimer;
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qemu_or_irq ppc_irq_orgate;
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SplitIRQ sec_resp_splitter;
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SplitIRQ ppc_irq_splitter[NUM_PPCS];
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SplitIRQ mpc_irq_splitter[IOTS_NUM_EXP_MPC + IOTS_NUM_MPC];
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qemu_or_irq mpc_irq_orgate;
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qemu_or_irq nmi_orgate;
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CMSDKAPBDualTimer dualtimer;
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CMSDKAPBWatchdog s32kwatchdog;
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CMSDKAPBWatchdog nswatchdog;
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CMSDKAPBWatchdog swatchdog;
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IoTKitSysCtl sysctl;
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IoTKitSysCtl sysinfo;
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MemoryRegion container;
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MemoryRegion alias1;
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MemoryRegion alias2;
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MemoryRegion alias3;
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MemoryRegion sram0;
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qemu_irq *exp_irqs;
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qemu_irq ppc0_irq;
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qemu_irq ppc1_irq;
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qemu_irq sec_resp_cfg;
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qemu_irq sec_resp_cfg_in;
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qemu_irq nsc_cfg_in;
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qemu_irq irq_status_in[NUM_EXTERNAL_PPCS];
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qemu_irq mpcexp_status_in[IOTS_NUM_EXP_MPC];
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uint32_t nsccfg;
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/* Properties */
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MemoryRegion *board_memory;
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uint32_t exp_numirq;
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uint32_t mainclk_frq;
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} ARMSSE;
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typedef struct ARMSSEInfo ARMSSEInfo;
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typedef struct ARMSSEClass {
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DeviceClass parent_class;
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const ARMSSEInfo *info;
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} ARMSSEClass;
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#define ARMSSE_CLASS(klass) \
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OBJECT_CLASS_CHECK(ARMSSEClass, (klass), TYPE_ARMSSE)
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#define ARMSSE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(ARMSSEClass, (obj), TYPE_ARMSSE)
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#endif
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