github.com/transparency-dev/armored-witness-boot@v0.1.0/mem.go (about)

     1  // Copyright 2022 The Armored Witness Boot 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  //go:linkname ramStart runtime.ramStart
    25  var ramStart uint32 = 0x90000000
    26  
    27  //go:linkname ramSize runtime.ramSize
    28  var ramSize uint32 = 0x08000000
    29  
    30  // DMA region for bootloader operation
    31  const (
    32  	dmaStart = 0x98000000
    33  	dmaSize  = 0x08000000
    34  )
    35  
    36  // DMA region for target kernel boot
    37  const (
    38  	memoryStart = 0x80000000
    39  	memorySize  = 0x10000000
    40  )