mainboard/amd: add support for F2950 system board

F2950 SBC, also known as TONK 1201/TONK 1202, was originally
produced as a Centerm F2950 using DB800 reference design. Common
configuration does include a 600 MHz GeodeLX CPU underclocked to
500 or 400 MHz, 128 or 512 MiB of RAM in the single SODIMM slot and
128 or 512 MB IDE DOM. The board does have three USB 2.0 ports
(none of them possessing debug capabilities), PS/2, VGA, Geode
audio in/out and the serial port.

EEPROM needs to be soldered out and flashed externally at the time
of this message because flashrom would neither be able to dump BIOS
correctly while running vendor BIOS nor write flash contents.

All peripherals were tested against Linux 3.16 and seem to work
flawlessly. At the moment of this commit coreboot does not pass
PCI_COMMAND_IO from the configuration space to SeaBIOS, thereby
preventing VGA OPROM from being executed. This would be fixed in
the SeaBIOS itself or in a subsequent commit. As a workaround,
user may put VGA OPROM to vgaroms/seavgabios.bin in CBFS.

Signed-off-by: Andrey Korolyov <andrey@xdel.ru>

Change-Id: I93f13ecb53bd05abc0e07e0bd7ba40e646dcb4c4
Reviewed-on: https://review.coreboot.org/15565
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/src/mainboard/amd/f2950/devicetree.cb b/src/mainboard/amd/f2950/devicetree.cb
new file mode 100644
index 0000000000..4e563d21e7
--- /dev/null
+++ b/src/mainboard/amd/f2950/devicetree.cb
@@ -0,0 +1,67 @@
+chip northbridge/amd/lx
+	device domain 0 on
+		device pci 1.0 on end				# Northbridge
+		device pci 1.1 on end				# Graphics
+		device pci 1.2 on end				# Integrated cryptoaccelerator
+		chip southbridge/amd/cs5536
+			# IRQ 12 and 1 unmasked,  Keyboard and Mouse IRQs. OK
+			# SIRQ Mode = Active(Quiet) mode. Save power....
+			# Invert mask = IRQ 12 and 1 are active high. Keyboard and Mouse, UARTs, etc IRQs. OK
+			register "lpc_serirq_enable" = "0x0000105a"
+			register "lpc_serirq_polarity" = "0x0000EFA5"
+			register "lpc_serirq_mode" = "1"
+			register "enable_gpio_int_route" = "0x0D0C0700"
+			register "enable_ide_nand_flash" = "0"	# 0:ide mode, 1:flash
+			register "enable_USBP4_device" = "1"	# 0: host, 1:device
+			register "enable_USBP4_overcurrent" = "0" #0:off, xxxx:overcurrent setting CS5536 Data Book (pages 380-381)
+			register "com1_enable" = "0"
+			register "com1_address" = "0x3F8"
+			register "com1_irq" = "4"
+			register "com2_enable" = "0"
+			register "com2_address" = "0x2F8"
+			register "com2_irq" = "3"
+			register "unwanted_vpci[0]" = "0"	# End of list has a zero
+			device pci d.0 on end			# Ethernet
+			device pci f.0 on			# ISA Bridge
+				chip superio/winbond/w83627hf
+					device pnp 2e.0 off	# Floppy
+						io 0x60 = 0x3f0
+						irq 0x70 = 6
+						drq 0x74 = 2
+					end
+					device pnp 2e.1 off	# Parallel port
+						io 0x60 = 0x378
+						irq 0x70 = 7
+					end
+					device pnp 2e.2 on	# Com1
+						io 0x60 = 0x3f8
+						irq 0x70 = 4
+					end
+					device pnp 2e.3 off end	# Com2
+					device pnp 2e.5 on	# Keyboard
+						io 0x60 = 0x60
+						io 0x62 = 0x64
+						irq 0x70 = 1
+						irq 0x72 = 12
+					end
+					device pnp 2e.6 off end	# CIR
+					device pnp 2e.7 off end	# GAME_MIDI_GIPO1
+					device pnp 2e.8 off end	# GPIO2
+					device pnp 2e.9 off end	# GPIO3
+					device pnp 2e.a off end	# ACPI
+					device pnp 2e.b off end	# HW Monitor
+				end
+			end
+			device pci f.2 on end			# IDE Controller
+			device pci f.3 on end			# Audio
+			device pci f.4 on end			# OHCI
+			device pci f.5 on end			# EHCI
+		end
+	end
+	# APIC cluster is late CPU init.
+	device cpu_cluster 0 on
+		chip cpu/amd/geode_lx
+			device lapic 0 on end
+		end
+	end
+end