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Diffstat (limited to 'include/hw/misc/iotkit-secctl.h')
-rw-r--r-- | include/hw/misc/iotkit-secctl.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/include/hw/misc/iotkit-secctl.h b/include/hw/misc/iotkit-secctl.h new file mode 100644 index 000000000..79a362832 --- /dev/null +++ b/include/hw/misc/iotkit-secctl.h @@ -0,0 +1,127 @@ +/* + * ARM IoT Kit security controller + * + * 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 security controller which is part of the + * Arm IoT Kit and documented in + * https://developer.arm.com/documentation/ecm0601256/latest + * + * QEMU interface: + * + sysbus MMIO region 0 is the "secure privilege control block" registers + * + sysbus MMIO region 1 is the "non-secure privilege control block" registers + * + named GPIO output "sec_resp_cfg" indicating whether blocked accesses + * should RAZ/WI or bus error + * + named GPIO output "nsc_cfg" whose value tracks the NSCCFG register value + * + named GPIO output "msc_irq" for the combined IRQ line from the MSCs + * Controlling the 2 APB PPCs in the IoTKit: + * + named GPIO outputs apb_ppc0_nonsec[0..2] and apb_ppc1_nonsec + * + named GPIO outputs apb_ppc0_ap[0..2] and apb_ppc1_ap + * + named GPIO outputs apb_ppc{0,1}_irq_enable + * + named GPIO outputs apb_ppc{0,1}_irq_clear + * + named GPIO inputs apb_ppc{0,1}_irq_status + * Controlling each of the 4 expansion APB PPCs which a system using the IoTKit + * might provide: + * + named GPIO outputs apb_ppcexp{0,1,2,3}_nonsec[0..15] + * + named GPIO outputs apb_ppcexp{0,1,2,3}_ap[0..15] + * + named GPIO outputs apb_ppcexp{0,1,2,3}_irq_enable + * + named GPIO outputs apb_ppcexp{0,1,2,3}_irq_clear + * + named GPIO inputs apb_ppcexp{0,1,2,3}_irq_status + * Controlling each of the 4 expansion AHB PPCs which a system using the IoTKit + * might provide: + * + named GPIO outputs ahb_ppcexp{0,1,2,3}_nonsec[0..15] + * + named GPIO outputs ahb_ppcexp{0,1,2,3}_ap[0..15] + * + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_enable + * + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_clear + * + named GPIO inputs ahb_ppcexp{0,1,2,3}_irq_status + * Controlling the (up to) 4 MPCs in the IoTKit/SSE: + * + named GPIO inputs mpc_status[0..3] + * Controlling each of the 16 expansion MPCs which a system using the IoTKit + * might provide: + * + named GPIO inputs mpcexp_status[0..15] + * Controlling each of the 16 expansion MSCs which a system using the IoTKit + * might provide: + * + named GPIO inputs mscexp_status[0..15] + * + named GPIO outputs mscexp_clear[0..15] + * + named GPIO outputs mscexp_ns[0..15] + */ + +#ifndef IOTKIT_SECCTL_H +#define IOTKIT_SECCTL_H + +#include "hw/sysbus.h" +#include "qom/object.h" + +#define TYPE_IOTKIT_SECCTL "iotkit-secctl" +OBJECT_DECLARE_SIMPLE_TYPE(IoTKitSecCtl, IOTKIT_SECCTL) + +#define IOTS_APB_PPC0_NUM_PORTS 3 +#define IOTS_APB_PPC1_NUM_PORTS 1 +#define IOTS_PPC_NUM_PORTS 16 +#define IOTS_NUM_APB_PPC 2 +#define IOTS_NUM_APB_EXP_PPC 4 +#define IOTS_NUM_AHB_EXP_PPC 4 +#define IOTS_NUM_EXP_MPC 16 +#define IOTS_NUM_MPC 4 +#define IOTS_NUM_EXP_MSC 16 + + +/* State and IRQ lines relating to a PPC. For the + * PPCs in the IoTKit not all the IRQ lines are used. + */ +typedef struct IoTKitSecCtlPPC { + qemu_irq nonsec[IOTS_PPC_NUM_PORTS]; + qemu_irq ap[IOTS_PPC_NUM_PORTS]; + qemu_irq irq_enable; + qemu_irq irq_clear; + + uint32_t ns; + uint32_t sp; + uint32_t nsp; + + /* Number of ports actually present */ + int numports; + /* Offset of this PPC's interrupt bits in SECPPCINTSTAT */ + int irq_bit_offset; + IoTKitSecCtl *parent; +} IoTKitSecCtlPPC; + +struct IoTKitSecCtl { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + qemu_irq sec_resp_cfg; + qemu_irq nsc_cfg_irq; + + MemoryRegion s_regs; + MemoryRegion ns_regs; + + uint32_t secppcintstat; + uint32_t secppcinten; + uint32_t secrespcfg; + uint32_t nsccfg; + uint32_t brginten; + uint32_t mpcintstatus; + + uint32_t secmscintstat; + uint32_t secmscinten; + uint32_t nsmscexp; + qemu_irq mscexp_clear[IOTS_NUM_EXP_MSC]; + qemu_irq mscexp_ns[IOTS_NUM_EXP_MSC]; + qemu_irq msc_irq; + + IoTKitSecCtlPPC apb[IOTS_NUM_APB_PPC]; + IoTKitSecCtlPPC apbexp[IOTS_NUM_APB_EXP_PPC]; + IoTKitSecCtlPPC ahbexp[IOTS_NUM_APB_EXP_PPC]; + + uint32_t sse_version; +}; + +#endif |