Add preliminary support for Bachmann electronic OT200

Linux boots fine :)

Change-Id: Ifda06e5220666534b87f528deae16d8b956c32b3
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-on: http://review.coreboot.org/1225
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

6 files changed, 265 insertions, 0 deletions

diff --git a/src/mainboard/bachmann/ot200/Kconfig b/src/mainboard/bachmann/ot200/Kconfig
new file mode 100644
index 0000000000..a201bdec4b
--- /dev/null
+++ b/src/mainboard/bachmann/ot200/Kconfig
@@ -0,0 +1,28 @@
+if BOARD_BACHMANN_OT200
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select ARCH_X86
+	select CPU_AMD_GEODE_LX
+	select NORTHBRIDGE_AMD_LX
+	select SOUTHBRIDGE_AMD_CS5536
+	select HAVE_PIRQ_TABLE
+	select PIRQ_ROUTE
+	select UDELAY_TSC
+	select BOARD_ROMSIZE_KB_2048
+	select POWER_BUTTON_DEFAULT_DISABLE
+	select DRIVERS_I2C_IDREG
+
+config MAINBOARD_DIR
+	string
+	default bachmann/ot200
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "OT200"
+
+config IRQ_SLOT_COUNT
+	int
+	default 6
+
+endif # BOARD_BACHMANN_OT200
diff --git a/src/mainboard/bachmann/ot200/chip.h b/src/mainboard/bachmann/ot200/chip.h
new file mode 100644
index 0000000000..6acb1ff27e
--- /dev/null
+++ b/src/mainboard/bachmann/ot200/chip.h
@@ -0,0 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Bachmann electronic GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+extern struct chip_operations mainboard_ops;
+
+struct mainboard_config {};
diff --git a/src/mainboard/bachmann/ot200/devicetree.cb b/src/mainboard/bachmann/ot200/devicetree.cb
new file mode 100644
index 0000000000..92c973d7e9
--- /dev/null
+++ b/src/mainboard/bachmann/ot200/devicetree.cb
@@ -0,0 +1,36 @@
+chip northbridge/amd/lx
+	device pci_domain 0 on
+		device pci 1.0 on end	# Northbridge
+		device pci 1.1 on end	# Graphics
+		device pci 1.2 on end   # AES
+		chip southbridge/amd/cs5536
+			register "lpc_serirq_enable" = "0x00000000"
+			register "lpc_serirq_polarity" = "0x00000000"
+			register "lpc_serirq_mode" = "0"
+			register "enable_gpio_int_route" = "0x0C0D0700"
+			register "enable_ide_nand_flash" = "0" # 0:ide mode, 1:flash
+			register "enable_USBP4_device" = "0"	#0: host, 1:device
+			register "enable_USBP4_overcurrent" = "0" #0:off, xxxx:overcurrent setting CS5536 Data Book (pages 380-381)
+			register "com1_enable" = "1"
+			register "com1_address" = "0x3F8"
+			register "com1_irq" = "4"
+			register "com2_enable" = "1"
+			register "com2_address" = "0x2F8"
+			register "com2_irq" = "3"
+			register "unwanted_vpci[0]" = "0"	# End of list has a zero
+			device pci 4.0 on end	# Ethernet 0
+			device pci f.0 on end	# ISA Bridge
+			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
+			device pci f.7 on end	# UOC
+		end
+	end
+	# APIC cluster is late CPU init.
+	device lapic_cluster 0 on
+		chip cpu/amd/geode_lx
+			device lapic 0 on end
+		end
+	end
+end
diff --git a/src/mainboard/bachmann/ot200/irq_tables.c b/src/mainboard/bachmann/ot200/irq_tables.c
new file mode 100644
index 0000000000..7c3e08f380
--- /dev/null
+++ b/src/mainboard/bachmann/ot200/irq_tables.c
@@ -0,0 +1,68 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Bachmann electronic GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <arch/pirq_routing.h>
+
+/* Platform IRQs */
+#define PIRQA 5
+#define PIRQB 9
+#define PIRQC 7
+#define PIRQD 10
+
+/* Map */
+#define M_PIRQA (1 << PIRQA)	/* Bitmap of supported IRQs */
+#define M_PIRQB (1 << PIRQB)	/* Bitmap of supported IRQs */
+#define M_PIRQC (1 << PIRQC)	/* Bitmap of supported IRQs */
+#define M_PIRQD (1 << PIRQD)	/* Bitmap of supported IRQs */
+
+/* Link */
+#define L_PIRQA  1		/* Means Slot INTx# Connects To Chipset INTA# */
+#define L_PIRQB  2		/* Means Slot INTx# Connects To Chipset INTB# */
+#define L_PIRQC  3		/* Means Slot INTx# Connects To Chipset INTC# */
+#define L_PIRQD  4		/* Means Slot INTx# Connects To Chipset INTD# */
+
+
+const struct irq_routing_table intel_irq_routing_table = {
+	PIRQ_SIGNATURE,				/* u32 signature */
+	PIRQ_VERSION,				/* u16 version */
+	32 + 16 * CONFIG_IRQ_SLOT_COUNT,	/* Max. number of devices on the bus */
+	0x00,					/* Interrupt router bus */
+	0x0f << 3,				/* Interrupt router dev */
+	0,					/* IRQs devoted exclusively to PCI usage */
+	0x100b,					/* Vendor */
+	0x2b,					/* Device */
+	0,					/* Miniport */
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 	/* u8 rfu[11] */
+	0x20,					/* Checksum (has to be set to some value that
+						 * would give 0 after the sum of all bytes
+						 * for this structure (including checksum).
+						 */
+	{
+		/* bus,        dev | fn,   {link, bitmap},     {link, bitmap},     {link, bitmap},     {link, bitmap},      slot, rfu */
+		{0x00, (0x01 << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {0x00, 0x0000},     {0x00, 0x0000},     {0x00, 0x0000}},     0x0, 0x0},	/* CPU */
+		{0x00, (0x0f << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}}, 0x0, 0x0},	/* chipset */
+		{0x00, (0x04 << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {0x00, 0x0000},     {0x00, 0x0000},     {0x00, 0x0000}},     0x0, 0x0},	/* ethernet */
+	}
+};
+
+unsigned long write_pirq_routing_table(unsigned long addr)
+{
+	return copy_pirq_routing_table(addr);
+}
diff --git a/src/mainboard/bachmann/ot200/mainboard.c b/src/mainboard/bachmann/ot200/mainboard.c
new file mode 100644
index 0000000000..76b3c53568
--- /dev/null
+++ b/src/mainboard/bachmann/ot200/mainboard.c
@@ -0,0 +1,24 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Bachmann electronic GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <device/device.h>
+
+struct chip_operations mainboard_ops = {
+	CHIP_NAME(CONFIG_MAINBOARD_VENDOR " " CONFIG_MAINBOARD_PART_NUMBER)
+};
diff --git a/src/mainboard/bachmann/ot200/romstage.c b/src/mainboard/bachmann/ot200/romstage.c
new file mode 100644
index 0000000000..9edd5f7251
--- /dev/null
+++ b/src/mainboard/bachmann/ot200/romstage.c
@@ -0,0 +1,86 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Bachmann electronic GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <spd.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/hlt.h>
+#include <console/console.h>
+#include "cpu/x86/bist.h"
+#include "cpu/x86/msr.h"
+#include <cpu/amd/lxdef.h>
+#include "southbridge/amd/cs5536/cs5536.h"
+#include "southbridge/amd/cs5536/early_smbus.c"
+#include "southbridge/amd/cs5536/early_setup.c"
+
+static inline int spd_read_byte(unsigned int device, unsigned int address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define ManualConf 1		/* Do automatic strapped PLL config */
+#define PLLMSRhi 0x0000039c	/* CPU 500 MHz - GLIU 266 MHz */
+#define PLLMSRlo 0x07de001e
+
+#include "northbridge/amd/lx/raminit.h"
+#include "northbridge/amd/lx/pll_reset.c"
+#include "northbridge/amd/lx/raminit.c"
+#include "lib/generic_sdram.c"
+#include "cpu/amd/geode_lx/cpureginit.c"
+#include "cpu/amd/geode_lx/syspreinit.c"
+#include "cpu/amd/geode_lx/msrinit.c"
+
+void main(unsigned long bist)
+{
+	static const struct mem_controller memctrl[] = {
+		{.channel0 = {DIMM0}}
+	};
+
+	SystemPreInit();
+	msr_init();
+
+	cs5536_early_setup();
+
+	/* Note: must do this AFTER the early_setup! It is counting on some
+	 * early MSR setup for CS5536.
+	 */
+	/* cs5536_disable_internal_uart: disable them for now, set them
+	 * up later...
+	 */
+	/* If debug. real setup done in chipset init via devicetree.cb. */
+	cs5536_setup_onchipuart(1);
+	console_init();
+
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+	pll_reset(ManualConf);
+
+	cpuRegInit(0, DIMM0, DIMM1, DRAM_TERMINATED);
+
+	sdram_initialize(1, memctrl);
+
+	/* Memory is setup. Return to cache_as_ram.inc and continue to boot. */
+	return;
+}