CloverBootloader/ArmPkg/Include/Chipset/ArmV7.h

/** @file

  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
  Copyright (c) 2011-2021, Arm Limited. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef ARM_V7_H_
#define ARM_V7_H_

#include <Chipset/ArmV7Mmu.h>

// ARM Interrupt ID in Exception Table
#define ARM_ARCH_EXCEPTION_IRQ  EXCEPT_ARM_IRQ

// ID_PFR1 - ARM Processor Feature Register 1 definitions
#define ARM_PFR1_SEC    (0xFUL << 4)
#define ARM_PFR1_TIMER  (0xFUL << 16)
#define ARM_PFR1_GIC    (0xFUL << 28)

// Domain Access Control Register
#define DOMAIN_ACCESS_CONTROL_MASK(a)      (3UL << (2 * (a)))
#define DOMAIN_ACCESS_CONTROL_NONE(a)      (0UL << (2 * (a)))
#define DOMAIN_ACCESS_CONTROL_CLIENT(a)    (1UL << (2 * (a)))
#define DOMAIN_ACCESS_CONTROL_RESERVED(a)  (2UL << (2 * (a)))
#define DOMAIN_ACCESS_CONTROL_MANAGER(a)   (3UL << (2 * (a)))

// CPSR - Coprocessor Status Register definitions
#define CPSR_MODE_USER       0x10
#define CPSR_MODE_FIQ        0x11
#define CPSR_MODE_IRQ        0x12
#define CPSR_MODE_SVC        0x13
#define CPSR_MODE_ABORT      0x17
#define CPSR_MODE_HYP        0x1A
#define CPSR_MODE_UNDEFINED  0x1B
#define CPSR_MODE_SYSTEM     0x1F
#define CPSR_MODE_MASK       0x1F
#define CPSR_ASYNC_ABORT     (1 << 8)
#define CPSR_IRQ             (1 << 7)
#define CPSR_FIQ             (1 << 6)

// CPACR - Coprocessor Access Control Register definitions
#define CPACR_CP_DENIED(cp)  0x00
#define CPACR_CP_PRIV(cp)    ((0x1 << ((cp) << 1)) & 0x0FFFFFFF)
#define CPACR_CP_FULL(cp)    ((0x3 << ((cp) << 1)) & 0x0FFFFFFF)
#define CPACR_ASEDIS          (1 << 31)
#define CPACR_D32DIS          (1 << 30)
#define CPACR_CP_FULL_ACCESS  0x0FFFFFFF

// NSACR - Non-Secure Access Control Register definitions
#define NSACR_CP(cp)  ((1 << (cp)) & 0x3FFF)
#define NSACR_NSD32DIS  (1 << 14)
#define NSACR_NSASEDIS  (1 << 15)
#define NSACR_PLE       (1 << 16)
#define NSACR_TL        (1 << 17)
#define NSACR_NS_SMP    (1 << 18)
#define NSACR_RFR       (1 << 19)

// SCR - Secure Configuration Register definitions
#define SCR_NS   (1 << 0)
#define SCR_IRQ  (1 << 1)
#define SCR_FIQ  (1 << 2)
#define SCR_EA   (1 << 3)
#define SCR_FW   (1 << 4)
#define SCR_AW   (1 << 5)

// MIDR - Main ID Register definitions
#define ARM_CPU_TYPE_SHIFT  4
#define ARM_CPU_TYPE_MASK   0xFFF
#define ARM_CPU_TYPE_AEMV8  0xD0F
#define ARM_CPU_TYPE_A53    0xD03
#define ARM_CPU_TYPE_A57    0xD07
#define ARM_CPU_TYPE_A15    0xC0F
#define ARM_CPU_TYPE_A12    0xC0D
#define ARM_CPU_TYPE_A9     0xC09
#define ARM_CPU_TYPE_A7     0xC07
#define ARM_CPU_TYPE_A5     0xC05

#define ARM_CPU_REV_MASK  ((0xF << 20) | (0xF) )
#define ARM_CPU_REV(rn, pn)  ((((rn) & 0xF) << 20) | ((pn) & 0xF))

#define ARM_VECTOR_TABLE_ALIGNMENT  ((1 << 5)-1)

VOID
EFIAPI
ArmEnableSWPInstruction (
  VOID
  );

UINTN
EFIAPI
ArmReadCbar (
  VOID
  );

UINTN
EFIAPI
ArmReadTpidrurw (
  VOID
  );

VOID
EFIAPI
ArmWriteTpidrurw (
  UINTN  Value
  );

UINT32
EFIAPI
ArmReadNsacr (
  VOID
  );

VOID
EFIAPI
ArmWriteNsacr (
  IN  UINT32  Nsacr
  );

#endif // ARM_V7_H_