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tilelink2: create DTS for devices automagically

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Wesley W. Terpstra 2016-09-16 17:26:14 -07:00
parent 2587234838
commit a357c1d42e
1 changed files with 14 additions and 1 deletions
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15
src/main/scala/uncore/tilelink2/Parameters.scala
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@ -127,7 +127,8 @@ case class TLManagerParameters(
supportsPutPartial: TransferSizes = TransferSizes.none,
supportsHint: TransferSizes = TransferSizes.none,
// If fifoId=Some, all accesses sent to the same fifoId are executed and ACK'd in FIFO order
fifoId: Option[Int] = None)
fifoId: Option[Int] = None,
customDTS: Option[String]= None)
{
address.combinations(2).foreach({ case Seq(x,y) =>
require (!x.overlaps(y))
@ -143,6 +144,18 @@ case class TLManagerParameters(
supportsPutFull.max,
supportsPutPartial.max).max
// Generate the config string (in future device tree)
lazy val name = nodePath.lastOption.map(_.lazyModule.name).getOrElse("disconnected")
lazy val dts = customDTS.getOrElse {
val header = s"${name} {\n"
val middle = address.map { a =>
require (!a.strided) // Config String does not support this
" addr 0x%x;\n size 0x%x;\n".format(a.base, a.mask+1)
}
val footer = "}\n"
header + middle.reduce(_ + _) + footer
}
// The device had better not support a transfer larger than it's alignment
address.foreach({ case a =>
require (a.alignment1 >= maxTransfer-1)