spinal.lib.misc.HexTools.scala Maven / Gradle / Ivy
package spinal.lib.misc
import spinal.core.{Data, Mem}
object HexTools{
def readHexFile(path : String, hexOffset : Int, callback : (Int, Int) => Unit) : Unit ={
import scala.io.Source
def hToI(that : String, start : Int, size : Int) = Integer.parseInt(that.substring(start,start + size), 16)
var offset = 0
for (line <- Source.fromFile(path).getLines) {
if (line.charAt(0) == ':'){
val byteCount = hToI(line, 1, 2)
val nextAddr = hToI(line, 3, 4) + offset
val key = hToI(line, 7, 2)
key match {
case 0 =>
for(i <- 0 until byteCount){
callback(nextAddr + i - hexOffset, hToI(line, 9 + i * 2, 2))
}
case 2 =>
offset = hToI(line, 9, 4) << 4
case 4 =>
offset = hToI(line, 9, 4) << 16
case 3 =>
case 5 =>
case 1 =>
}
}
}
}
def readHexFile(path : String, hexOffset : Int): Array[BigInt] ={
var onChipRomSize = 0
readHexFile(path, hexOffset ,(address, _) => {
onChipRomSize = Math.max((address).toInt, onChipRomSize) + 1
})
val initContent = Array.fill[BigInt]((onChipRomSize+3)/4)(0)
readHexFile(path, hexOffset,(address,data) => {
val addressWithoutOffset = (address).toInt
if(addressWithoutOffset < onChipRomSize)
initContent(addressWithoutOffset >> 2) |= BigInt(data) << ((addressWithoutOffset & 3)*8)
})
initContent
}
def initRam[T <: Data](ram : Mem[T], onChipRamHexFile : String, hexOffset : BigInt): Unit ={
val wordSize = ram.wordType.getBitsWidth/8
val initContent = Array.fill[BigInt](ram.wordCount)(0)
HexTools.readHexFile(onChipRamHexFile, 0,(address,data) => {
val addressWithoutOffset = (address - hexOffset).toInt
initContent(addressWithoutOffset/wordSize) |= BigInt(data) << ((addressWithoutOffset % wordSize)*8)
})
ram.initBigInt(initContent)
}
}