diff options
| -rw-r--r-- | src/dev/arm/Gic.py | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/src/dev/arm/Gic.py b/src/dev/arm/Gic.py index b431a6e32..d2e2ace3f 100644 --- a/src/dev/arm/Gic.py +++ b/src/dev/arm/Gic.py @@ -192,7 +192,7 @@ class Gicv3(BaseGic): cxx_header = "dev/arm/gic_v3.hh" # Used for DTB autogeneration - _state = FdtState(addr_cells=2, interrupt_cells=3) + _state = FdtState(addr_cells=2, size_cells=2, interrupt_cells=3) its = Param.Gicv3Its(Gicv3Its(), "GICv3 Interrupt Translation Service") @@ -214,3 +214,39 @@ class Gicv3(BaseGic): "redistributors") gicv4 = Param.Bool(True, "GICv4 extension available") + + def interruptCells(self, int_type, int_num, int_flag): + """ + Interupt cells generation helper: + Following specifications described in + + Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt + """ + prop = self._state.interruptCells(0) + assert len(prop) >= 3 + prop[0] = int_type + prop[1] = int_num + prop[2] = int_flag + return prop + + def generateDeviceTree(self, state): + node = FdtNode("interrupt-controller") + node.appendCompatible(["arm,gic-v3"]) + node.append(self._state.interruptCellsProperty()) + node.append(self._state.addrCellsProperty()) + node.append(self._state.sizeCellsProperty()) + node.append(FdtProperty("interrupt-controller")) + + regs = ( + state.addrCells(self.dist_addr) + + state.sizeCells(0x10000) + + state.addrCells(self.redist_addr) + + state.sizeCells(0x2000000) ) + + node.append(FdtPropertyWords("reg", regs)) + node.append(FdtPropertyWords("interrupts", + self.interruptCells(1, int(self.maint_int.num)-16, 0xf04))) + + node.appendPhandle(self) + + yield node |