nb/intel/raminit (native): Read PCI mmio size from devicetree

Instead of hardcoding the PCI mmio size read it from devicetree.
Set a default value of 2048 MiB and 1024MiB for laptops without
discrete graphics.

Tested on Sandybridge Lenovo T520.

Change-Id: I791ebd6897c5ba4e2e18bd307d320568b1378a13
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/15140
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/apple/macbookair4_2/devicetree.cb b/src/mainboard/apple/macbookair4_2/devicetree.cb
index a43b9f2..226ec04 100644
--- a/src/mainboard/apple/macbookair4_2/devicetree.cb
+++ b/src/mainboard/apple/macbookair4_2/devicetree.cb
@@ -30,6 +30,9 @@
 			end
 		end
 	end
+
+	register "pci_mmio_size" = "2048"
+
 	device domain 0x0 on
 		chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
 			register "c2_latency" = "0x0065"
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
index f4a8664..2cd3816 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
@@ -19,6 +19,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		subsystemid 0x1458 0x5000 inherit
 		device pci 00.0 on # host bridge
diff --git a/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb b/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb
index 5ed7ec3..618943c 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb
+++ b/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb
@@ -18,6 +18,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		subsystemid 0x1458 0x5000 inherit
 		device pci 00.0 on # host bridge
diff --git a/src/mainboard/google/stout/devicetree.cb b/src/mainboard/google/stout/devicetree.cb
index 6c693ad..76f2856 100644
--- a/src/mainboard/google/stout/devicetree.cb
+++ b/src/mainboard/google/stout/devicetree.cb
@@ -42,6 +42,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		subsystemid 0x1ae0 0xc000 inherit
 		device pci 00.0 on end # host bridge
diff --git a/src/mainboard/lenovo/t400/devicetree.cb b/src/mainboard/lenovo/t400/devicetree.cb
index 7923046..43a610a 100644
--- a/src/mainboard/lenovo/t400/devicetree.cb
+++ b/src/mainboard/lenovo/t400/devicetree.cb
@@ -23,6 +23,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x20e0
diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb
index 9f42cbb..809e3ee 100644
--- a/src/mainboard/lenovo/t420/devicetree.cb
+++ b/src/mainboard/lenovo/t420/devicetree.cb
@@ -36,6 +36,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x21ce
diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb
index 2376d64..841e675 100644
--- a/src/mainboard/lenovo/t420s/devicetree.cb
+++ b/src/mainboard/lenovo/t420s/devicetree.cb
@@ -35,6 +35,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x21d2
diff --git a/src/mainboard/lenovo/t430s/devicetree.cb b/src/mainboard/lenovo/t430s/devicetree.cb
index 8c0f10f..d1cea3c 100644
--- a/src/mainboard/lenovo/t430s/devicetree.cb
+++ b/src/mainboard/lenovo/t430s/devicetree.cb
@@ -35,6 +35,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x21fb
diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb
index 379a95d..c0292ec 100644
--- a/src/mainboard/lenovo/t520/devicetree.cb
+++ b/src/mainboard/lenovo/t520/devicetree.cb
@@ -36,6 +36,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on end # host bridge
 		device pci 01.0 on end # NVIDIA Corporation GF119M [NVS 4200M]
diff --git a/src/mainboard/lenovo/t530/devicetree.cb b/src/mainboard/lenovo/t530/devicetree.cb
index 7db65c7..43d8264 100644
--- a/src/mainboard/lenovo/t530/devicetree.cb
+++ b/src/mainboard/lenovo/t530/devicetree.cb
@@ -36,6 +36,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on end # host bridge
 		device pci 01.0 on end # PCIe Bridge for discrete graphics
diff --git a/src/mainboard/lenovo/x200/devicetree.cb b/src/mainboard/lenovo/x200/devicetree.cb
index 92c41d7..9f5bb41 100644
--- a/src/mainboard/lenovo/x200/devicetree.cb
+++ b/src/mainboard/lenovo/x200/devicetree.cb
@@ -28,6 +28,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x20e0
diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb
index 2374554..bd6490e 100644
--- a/src/mainboard/lenovo/x201/devicetree.cb
+++ b/src/mainboard/lenovo/x201/devicetree.cb
@@ -80,6 +80,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		device pci 00.0 on # Host bridge
 			subsystemid 0x17aa 0x2193
diff --git a/src/mainboard/lenovo/x220/devicetree.cb b/src/mainboard/lenovo/x220/devicetree.cb
index 6f84acd..af70b20 100644
--- a/src/mainboard/lenovo/x220/devicetree.cb
+++ b/src/mainboard/lenovo/x220/devicetree.cb
@@ -36,6 +36,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x21db
diff --git a/src/mainboard/lenovo/x230/devicetree.cb b/src/mainboard/lenovo/x230/devicetree.cb
index 37d53d4..f0c940d 100644
--- a/src/mainboard/lenovo/x230/devicetree.cb
+++ b/src/mainboard/lenovo/x230/devicetree.cb
@@ -36,6 +36,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		device pci 00.0 on
 			subsystemid 0x17aa 0x21fa
diff --git a/src/mainboard/packardbell/ms2290/devicetree.cb b/src/mainboard/packardbell/ms2290/devicetree.cb
index 12ce648..bb4e854 100644
--- a/src/mainboard/packardbell/ms2290/devicetree.cb
+++ b/src/mainboard/packardbell/ms2290/devicetree.cb
@@ -42,6 +42,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		device pci 00.0 on # Host bridge
 			subsystemid 0x1025 0x0379
diff --git a/src/mainboard/roda/rk9/devicetree.cb b/src/mainboard/roda/rk9/devicetree.cb
index 003c08e..690c2a5 100644
--- a/src/mainboard/roda/rk9/devicetree.cb
+++ b/src/mainboard/roda/rk9/devicetree.cb
@@ -19,6 +19,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "2048"
+
 	device domain 0 on
 		subsystemid 0x4352 0x8986
 		device pci 00.0 on end # host bridge
diff --git a/src/mainboard/samsung/lumpy/devicetree.cb b/src/mainboard/samsung/lumpy/devicetree.cb
index f73e6039..0dd3228 100644
--- a/src/mainboard/samsung/lumpy/devicetree.cb
+++ b/src/mainboard/samsung/lumpy/devicetree.cb
@@ -34,6 +34,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		ioapic_irq 4 INTA 0x10
 		ioapic_irq 4 INTB 0x11
diff --git a/src/mainboard/samsung/stumpy/devicetree.cb b/src/mainboard/samsung/stumpy/devicetree.cb
index 901711b..adc15e6 100644
--- a/src/mainboard/samsung/stumpy/devicetree.cb
+++ b/src/mainboard/samsung/stumpy/devicetree.cb
@@ -32,6 +32,8 @@
 		end
 	end
 
+	register "pci_mmio_size" = "1024"
+
 	device domain 0 on
 		subsystemid 0x1ae0 0xc000 inherit
 		device pci 00.0 on end # host bridge