include/hw/arm/armsse.h

   1 /*
   2  * ARM SSE (Subsystems for Embedded): IoTKit, SSE-200
   3  *
   4  * Copyright (c) 2018 Linaro Limited
   5  * Written by Peter Maydell
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 or
   9  * (at your option) any later version.
  10  */
  11
  12 /*
  13  * This is a model of the Arm "Subsystems for Embedded" family of
  14  * hardware, which include the IoT Kit and the SSE-050, SSE-100 and
  15  * SSE-200. Currently we model:
  16  *  - the Arm IoT Kit which is documented in
  17  * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ecm0601256/index.html
  18  *  - the SSE-200 which is documented in
  19  * http://infocenter.arm.com/help/topic/com.arm.doc.101104_0100_00_en/corelink_sse200_subsystem_for_embedded_technical_reference_manual_101104_0100_00_en.pdf
  20  *
  21  * The IoTKit contains:
  22  *  a Cortex-M33
  23  *  the IDAU
  24  *  some timers and watchdogs
  25  *  two peripheral protection controllers
  26  *  a memory protection controller
  27  *  a security controller
  28  *  a bus fabric which arranges that some parts of the address
  29  *  space are secure and non-secure aliases of each other
  30  * The SSE-200 additionally contains:
  31  *  a second Cortex-M33
  32  *  two Message Handling Units (MHUs)
  33  *  an optional CryptoCell (which we do not model)
  34  *  more SRAM banks with associated MPCs
  35  *  multiple Power Policy Units (PPUs)
  36  *  a control interface for an icache for each CPU
  37  *  per-CPU identity and control register blocks
  38  *
  39  * QEMU interface:
  40  *  + Clock input "MAINCLK": clock for CPUs and most peripherals
  41  *  + Clock input "S32KCLK": slow 32KHz clock used for a few peripherals
  42  *  + QOM property "memory" is a MemoryRegion containing the devices provided
  43  *    by the board model.
  44  *  + QOM property "MAINCLK_FRQ" is the frequency of the main system clock
  45  *  + QOM property "EXP_NUMIRQ" sets the number of expansion interrupts.
  46  *    (In hardware, the SSE-200 permits the number of expansion interrupts
  47  *    for the two CPUs to be configured separately, but we restrict it to
  48  *    being the same for both, to avoid having to have separate Property
  49  *    lists for different variants. This restriction can be relaxed later
  50  *    if necessary.)
  51  *  + QOM property "SRAM_ADDR_WIDTH" sets the number of bits used for the
  52  *    address of each SRAM bank (and thus the total amount of internal SRAM)
  53  *  + QOM property "init-svtor" sets the initial value of the CPU SVTOR register
  54  *    (where it expects to load the PC and SP from the vector table on reset)
  55  *  + QOM properties "CPU0_FPU", "CPU0_DSP", "CPU1_FPU" and "CPU1_DSP" which
  56  *    set whether the CPUs have the FPU and DSP features present. The default
  57  *    (matching the hardware) is that for CPU0 in an IoTKit and CPU1 in an
  58  *    SSE-200 both are present; CPU0 in an SSE-200 has neither.
  59  *    Since the IoTKit has only one CPU, it does not have the CPU1_* properties.
  60  *  + Named GPIO inputs "EXP_IRQ" 0..n are the expansion interrupts for CPU 0,
  61  *    which are wired to its NVIC lines 32 .. n+32
  62  *  + Named GPIO inputs "EXP_CPU1_IRQ" 0..n are the expansion interrupts for
  63  *    CPU 1, which are wired to its NVIC lines 32 .. n+32
  64  *  + sysbus MMIO region 0 is the "AHB Slave Expansion" which allows
  65  *    bus master devices in the board model to make transactions into
  66  *    all the devices and memory areas in the IoTKit
  67  * Controlling up to 4 AHB expansion PPBs which a system using the IoTKit
  68  * might provide:
  69  *  + named GPIO outputs apb_ppcexp{0,1,2,3}_nonsec[0..15]
  70  *  + named GPIO outputs apb_ppcexp{0,1,2,3}_ap[0..15]
  71  *  + named GPIO outputs apb_ppcexp{0,1,2,3}_irq_enable
  72  *  + named GPIO outputs apb_ppcexp{0,1,2,3}_irq_clear
  73  *  + named GPIO inputs apb_ppcexp{0,1,2,3}_irq_status
  74  * Controlling each of the 4 expansion AHB PPCs which a system using the IoTKit
  75  * might provide:
  76  *  + named GPIO outputs ahb_ppcexp{0,1,2,3}_nonsec[0..15]
  77  *  + named GPIO outputs ahb_ppcexp{0,1,2,3}_ap[0..15]
  78  *  + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_enable
  79  *  + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_clear
  80  *  + named GPIO inputs ahb_ppcexp{0,1,2,3}_irq_status
  81  * Controlling each of the 16 expansion MPCs which a system using the IoTKit
  82  * might provide:
  83  *  + named GPIO inputs mpcexp_status[0..15]
  84  * Controlling each of the 16 expansion MSCs which a system using the IoTKit
  85  * might provide:
  86  *  + named GPIO inputs mscexp_status[0..15]
  87  *  + named GPIO outputs mscexp_clear[0..15]
  88  *  + named GPIO outputs mscexp_ns[0..15]
  89  */
  90
  91 #ifndef ARMSSE_H
  92 #define ARMSSE_H
  93
  94 #include "hw/sysbus.h"
  95 #include "hw/arm/armv7m.h"
  96 #include "hw/misc/iotkit-secctl.h"
  97 #include "hw/misc/tz-ppc.h"
  98 #include "hw/misc/tz-mpc.h"
  99 #include "hw/timer/cmsdk-apb-timer.h"
 100 #include "hw/timer/cmsdk-apb-dualtimer.h"
 101 #include "hw/watchdog/cmsdk-apb-watchdog.h"
 102 #include "hw/misc/iotkit-sysctl.h"
 103 #include "hw/misc/iotkit-sysinfo.h"
 104 #include "hw/misc/armsse-cpuid.h"
 105 #include "hw/misc/armsse-mhu.h"
 106 #include "hw/misc/unimp.h"
 107 #include "hw/or-irq.h"
 108 #include "hw/clock.h"
 109 #include "hw/core/split-irq.h"
 110 #include "hw/cpu/cluster.h"
 111 #include "qom/object.h"
 112
 113 #define TYPE_ARM_SSE "arm-sse"
 114 OBJECT_DECLARE_TYPE(ARMSSE, ARMSSEClass,
 115                     ARM_SSE)
 116
 117 /*
 118  * These type names are for specific IoTKit subsystems; other than
 119  * instantiating them, code using these devices should always handle
 120  * them via the ARMSSE base class, so they have no IOTKIT() etc macros.
 121  */
 122 #define TYPE_IOTKIT "iotkit"
 123 #define TYPE_SSE200 "sse-200"
 124
 125 /* We have an IRQ splitter and an OR gate input for each external PPC
 126  * and the 2 internal PPCs
 127  */
 128 #define NUM_EXTERNAL_PPCS (IOTS_NUM_AHB_EXP_PPC + IOTS_NUM_APB_EXP_PPC)
 129 #define NUM_PPCS (NUM_EXTERNAL_PPCS + 2)
 130
 131 #define MAX_SRAM_BANKS 4
 132 #if MAX_SRAM_BANKS > IOTS_NUM_MPC
 133 #error Too many SRAM banks
 134 #endif
 135
 136 #define SSE_MAX_CPUS 2
 137
 138 /* These define what each PPU in the ppu[] index is for */
 139 #define CPU0CORE_PPU 0
 140 #define CPU1CORE_PPU 1
 141 #define DBG_PPU 2
 142 #define RAM0_PPU 3
 143 #define RAM1_PPU 4
 144 #define RAM2_PPU 5
 145 #define RAM3_PPU 6
 146 #define NUM_PPUS 7
 147
 148 struct ARMSSE {
 149     /*< private >*/
 150     SysBusDevice parent_obj;
 151
 152     /*< public >*/
 153     ARMv7MState armv7m[SSE_MAX_CPUS];
 154     CPUClusterState cluster[SSE_MAX_CPUS];
 155     IoTKitSecCtl secctl;
 156     TZPPC apb_ppc0;
 157     TZPPC apb_ppc1;
 158     TZMPC mpc[IOTS_NUM_MPC];
 159     CMSDKAPBTimer timer0;
 160     CMSDKAPBTimer timer1;
 161     CMSDKAPBTimer s32ktimer;
 162     qemu_or_irq ppc_irq_orgate;
 163     SplitIRQ sec_resp_splitter;
 164     SplitIRQ ppc_irq_splitter[NUM_PPCS];
 165     SplitIRQ mpc_irq_splitter[IOTS_NUM_EXP_MPC + IOTS_NUM_MPC];
 166     qemu_or_irq mpc_irq_orgate;
 167     qemu_or_irq nmi_orgate;
 168
 169     SplitIRQ cpu_irq_splitter[32];
 170
 171     CMSDKAPBDualTimer dualtimer;
 172
 173     CMSDKAPBWatchdog s32kwatchdog;
 174     CMSDKAPBWatchdog nswatchdog;
 175     CMSDKAPBWatchdog swatchdog;
 176
 177     IoTKitSysCtl sysctl;
 178     IoTKitSysCtl sysinfo;
 179
 180     ARMSSEMHU mhu[2];
 181     UnimplementedDeviceState ppu[NUM_PPUS];
 182     UnimplementedDeviceState cachectrl[SSE_MAX_CPUS];
 183     UnimplementedDeviceState cpusecctrl[SSE_MAX_CPUS];
 184
 185     ARMSSECPUID cpuid[SSE_MAX_CPUS];
 186
 187     /*
 188      * 'container' holds all devices seen by all CPUs.
 189      * 'cpu_container[i]' is the view that CPU i has: this has the
 190      * per-CPU devices of that CPU, plus as the background 'container'
 191      * (or an alias of it, since we can only use it directly once).
 192      * container_alias[i] is the alias of 'container' used by CPU i+1;
 193      * CPU 0 can use 'container' directly.
 194      */
 195     MemoryRegion container;
 196     MemoryRegion container_alias[SSE_MAX_CPUS - 1];
 197     MemoryRegion cpu_container[SSE_MAX_CPUS];
 198     MemoryRegion alias1;
 199     MemoryRegion alias2;
 200     MemoryRegion alias3[SSE_MAX_CPUS];
 201     MemoryRegion sram[MAX_SRAM_BANKS];
 202
 203     qemu_irq *exp_irqs[SSE_MAX_CPUS];
 204     qemu_irq ppc0_irq;
 205     qemu_irq ppc1_irq;
 206     qemu_irq sec_resp_cfg;
 207     qemu_irq sec_resp_cfg_in;
 208     qemu_irq nsc_cfg_in;
 209
 210     qemu_irq irq_status_in[NUM_EXTERNAL_PPCS];
 211     qemu_irq mpcexp_status_in[IOTS_NUM_EXP_MPC];
 212
 213     uint32_t nsccfg;
 214
 215     Clock *mainclk;
 216     Clock *s32kclk;
 217
 218     /* Properties */
 219     MemoryRegion *board_memory;
 220     uint32_t exp_numirq;
 221     uint32_t mainclk_frq;
 222     uint32_t sram_addr_width;
 223     uint32_t init_svtor;
 224     bool cpu_fpu[SSE_MAX_CPUS];
 225     bool cpu_dsp[SSE_MAX_CPUS];
 226 };
 227
 228 typedef struct ARMSSEInfo ARMSSEInfo;
 229
 230 struct ARMSSEClass {
 231     SysBusDeviceClass parent_class;
 232     const ARMSSEInfo *info;
 233 };
 234
 235
 236 #endif