github.com/transparency-dev/armored-witness-os@v0.1.3-0.20240514084412-27eef7325168/trusted_os/mem.go (about)

     1  // Copyright 2022 The Armored Witness OS authors. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build !bee
    16  // +build !bee
    17  
    18  package main
    19  
    20  import (
    21  	_ "unsafe"
    22  )
    23  
    24  const (
    25  	// Secure Monitor
    26  	secureStart = 0x80000000 // imx6ul.MMDC_BASE
    27  	secureSize  = 0x0e000000 // 224MB
    28  
    29  	// Secure Monitor DMA
    30  	secureDMAStart = 0x8e000000
    31  	secureDMASize  = 0x02000000 // 32MB
    32  
    33  	// Secure Monitor Applet
    34  	appletStart = 0x90000000
    35  	appletSize  = 0x10000000 // 256MB
    36  )
    37  
    38  //go:linkname ramStart runtime.ramStart
    39  var ramStart uint32 = secureStart
    40  
    41  //go:linkname ramSize runtime.ramSize
    42  var ramSize uint32 = secureSize