Add support for VIA EPIA-M850 board

EPIA-M850 can now boot linux. For a list of issues, see:
http://www.coreboot.org/VIA_EPIA-M850

That's all folks.

Change-Id: I7624944dbc05fbf3019897a116954d71dfda0031
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/1228
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

6 files changed, 497 insertions, 0 deletions

diff --git a/src/mainboard/via/epia-m850/Kconfig b/src/mainboard/via/epia-m850/Kconfig
new file mode 100644
index 0000000000..01ef032c4e
--- /dev/null
+++ b/src/mainboard/via/epia-m850/Kconfig
@@ -0,0 +1,49 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011-2012  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## 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, see <http://www.gnu.org/licenses/>.
+##
+
+if BOARD_VIA_EPIA_M850
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select ARCH_X86
+	select CPU_VIA_NANO
+	select NORTHBRIDGE_VIA_VX900
+	select SUPERIO_FINTEK_F81865F
+	select HAVE_PIRQ_TABLE
+	select PIRQ_ROUTE
+	select HAVE_MP_TABLE
+	#select HAVE_OPTION_TABLE
+	#select HAVE_ACPI_TABLES
+	#select HAVE_ACPI_RESUME
+	#select BOARD_HAS_FADT
+	select BOARD_ROMSIZE_KB_512
+
+config MAINBOARD_DIR
+	string
+	default via/epia-m850
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "EPIA-M850"
+
+config IRQ_SLOT_COUNT
+	int
+	default 13
+
+endif # BOARD_VIA_EPIA_M850
diff --git a/src/mainboard/via/epia-m850/Makefile.inc b/src/mainboard/via/epia-m850/Makefile.inc
new file mode 100644
index 0000000000..9c6d31f3ff
--- /dev/null
+++ b/src/mainboard/via/epia-m850/Makefile.inc
@@ -0,0 +1,21 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## 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, see <http://www.gnu.org/licenses/>.
+##
+
+#romstage-y += ./../../../superio/fintek/f81865f/f81865f_early_serial.c
+
diff --git a/src/mainboard/via/epia-m850/devicetree.cb b/src/mainboard/via/epia-m850/devicetree.cb
new file mode 100644
index 0000000000..0c21cc8f58
--- /dev/null
+++ b/src/mainboard/via/epia-m850/devicetree.cb
@@ -0,0 +1,111 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011-2013  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## 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, see <http://www.gnu.org/licenses/>.
+##
+
+chip northbridge/via/vx900		# Northbridge
+	register "assign_pex_to_dp" = "0"
+	register "pcie_port1_2_lane_wide" = "1"
+	register "ext_int_route_to_pirq" = "'H'"
+
+	device cpu_cluster 0 on		# APIC cluster
+		chip cpu/via/nano		# VIA NANO
+			device lapic 0 on end	# APIC
+		end
+	end
+	device domain 0 on
+		device pci 0.0  on end		# [0410] Host controller
+		device pci 0.1  on end		# [1410] Error Reporting
+		device pci 0.2  on end		# [2410] CPU Bus Control
+		device pci 0.3  on end		# [3410] DRAM Bus Control
+		device pci 0.4  on end		# [4410] Power Management
+		device pci 0.5  on 		# [5410] APIC+Traffic Control
+			chip drivers/generic/ioapic
+				register "have_isa_interrupts" = "0"
+				register "irq_on_fsb" = "1"
+				register "enable_virtual_wire" = "1"
+				register "base" = "0xfecc0000"
+				device ioapic 2 on end
+			end
+		end
+		device pci 0.6  off end		# [6410] Scratch Registers
+		device pci 0.7  on end		# [7410] V4 Link Control
+		device pci 1.0  on		# [7122] VGA Chrome9 HD
+			ioapic_irq 2 INTA 0x28
+		end
+		device pci 1.1  on		# [9170] Audio Device
+			ioapic_irq 2 INTA 0x29
+		end
+		device pci 3.0  on end		# [a410] PEX1
+		device pci 3.1  on end		# [b410] PEX2
+		device pci 3.2  on end		# [c410] PEX3
+		device pci 3.3  on end		# [d410] PEX4
+		device pci 3.4  on end		# [e410] PCIE bridge
+		device pci b.0  on end		# [a409] USB Device
+		device pci c.0  off end		# [95d0] SDIO Host Controller
+		device pci d.0  off end		# [9530] Memory Card controller
+		device pci f.0  on		# [9001] SATA Controller
+			ioapic_irq 1 INTA 0x15
+		end
+		device pci 10.0 on end		# [3038] USB 1.1
+		device pci 10.1 on end		# [3038] USB 1.1
+		device pci 10.2 on end		# [3038] USB 1.1
+		device pci 10.3 on end		# [3038] USB 1.1
+		device pci 10.4 on end		# [3104] USB 2.0
+		device pci 11.0 on		# [8410] LPC Bus Control
+			chip drivers/generic/ioapic
+				register "have_isa_interrupts" = "1"
+				register "irq_on_fsb" = "1"
+				register "enable_virtual_wire" = "1"
+				register "base" = "0xfec00000"
+				device ioapic 1 on end
+			end
+			#chip drivers/generic/generic	# DIMM 0 channel 1
+			#	device i2c 50 on end
+			#end
+			#chip drivers/generic/generic	# DIMM 1 channel 1
+			#	device i2c 51 on end
+			#end
+			chip superio/fintek/f81865f	# Super duper IO
+				device pnp 4e.0 off end	# Floppy
+				device pnp 4e.3 off end	# Parallel Port
+				device pnp 4e.4 off end	# Hardware Monitor
+				device pnp 4e.5 off end	# Keyboard not here
+				device pnp 4e.6 off end	# GPIO
+				device pnp 4e.a off end	# PME
+				device pnp 4e.10 on	# COM1
+					io 0x60 = 0x3f8
+					irq 0x70 = 4
+				end
+				device pnp 4e.11 on	# COM2
+					io 0x60 = 0x2f8
+					irq 0x70 = 3
+				end
+				device pnp 4e.12 on	# COM3
+					io 0x60 = 0x3e8
+					irq 0x70 = 10
+				end
+				device pnp 4e.13 on	# COM4
+					io 0x60 = 0x2e8
+					irq 0x70 = 11
+				end
+			end # superio/fintek/f81865f
+		end # LPC
+		device pci 11.7 on end		# [a353] North-South control
+		device pci 14.0 on end		# [3288] Azalia HDAC
+	end
+end
diff --git a/src/mainboard/via/epia-m850/irq_tables.c b/src/mainboard/via/epia-m850/irq_tables.c
new file mode 100644
index 0000000000..28fbb4f21a
--- /dev/null
+++ b/src/mainboard/via/epia-m850/irq_tables.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <arch/pirq_routing.h>
+#include <console/console.h>
+#include <device/pci_ids.h>
+#include <string.h> /* <- For memset */
+
+#define _OFF 0x00
+#define ___OFF 0x0000
+#define LNKA 1
+#define LNKB 2
+#define LNKC 3
+#define LNKD 4
+#define LNKE 5
+#define LNKF 6
+#define LNKG 7
+#define LNKH 8
+#define BITMAP 0xdce0
+/* The link that carries the SATA interrupt has its own mask, just in case
+ * we want to make sure our SATA controller gets mapped to IRQ 14 */
+#define B_SATA BITMAP
+
+const struct irq_routing_table intel_irq_routing_table = {
+	PIRQ_SIGNATURE,			/* u32 signature */
+	PIRQ_VERSION,			/* u16 version */
+	32 + 16 * 13,			/* Max. number of devices on the bus */
+	0x00,				/* Interrupt router bus */
+	(0x11 << 3) | 0x0,		/* Interrupt router dev */
+	0,				/* IRQs devoted exclusively for PCI */
+	PCI_VENDOR_ID_VIA,		/* Vendor */
+	PCI_DEVICE_ID_VIA_VX900_LPC,	/* Device */
+	0,				/* Miniport */
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
+	0x19,			/* 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, {{LNKH, BITMAP}, {LNKH, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+		{0x00, (0x03 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x0, 0x0},
+		{0x00, (0x0a << 3) | 0x0, {{LNKA, BITMAP}, {LNKB, B_SATA}, {LNKC, BITMAP}, {LNKD, BITMAP}}, 0x0, 0x0},
+		{0x00, (0x0b << 3) | 0x0, {{LNKA, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+		{0x00, (0x0c << 3) | 0x0, {{LNKA, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+		{0x00, (0x0d << 3) | 0x0, {{LNKA, BITMAP}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+		{0x00, (0x0f << 3) | 0x0, {{LNKB, B_SATA}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+		{0x00, (0x10 << 3) | 0x0, {{LNKA, BITMAP}, {LNKB, B_SATA}, {LNKC, BITMAP}, {LNKD, BITMAP}}, 0x0, 0x0},
+		{0x00, (0x14 << 3) | 0x0, {{LNKB, B_SATA}, {_OFF, ___OFF}, {_OFF, ___OFF}, {_OFF, ___OFF}}, 0x0, 0x0},
+		{0x01, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x1, 0x0},
+		{0x02, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x2, 0x0},
+		{0x03, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x0, 0x0},
+		{0x04, (0x00 << 3) | 0x0, {{LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}, {LNKH, BITMAP}}, 0x0, 0x0},
+	}
+};
+
+unsigned long write_pirq_routing_table(unsigned long addr)
+{
+	return copy_pirq_routing_table(addr, &intel_irq_routing_table);
+}
diff --git a/src/mainboard/via/epia-m850/mainboard.c b/src/mainboard/via/epia-m850/mainboard.c
new file mode 100644
index 0000000000..dbe682cfce
--- /dev/null
+++ b/src/mainboard/via/epia-m850/mainboard.c
@@ -0,0 +1,111 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <device/device.h>
+#include <device/pci_def.h>
+#include <device/pci_ops.h>
+#include <console/console.h>
+
+#if CONFIG_VGA_ROM_RUN
+
+#include <arch/interrupt.h>
+#include <x86emu/x86emu.h>
+
+#include <northbridge/via/vx900/vx900.h>
+
+static int vx900_int15_handler(void)
+{
+	int res;
+
+	printk(BIOS_DEBUG, "%s %0x\n", __func__, X86_AX & 0xffff);
+	/* Set AX return value here so we don't set it every time. Just set it
+	 * to something else if the callback is unsupported */
+	res = -1;
+	switch (X86_AX & 0xffff) {
+#if 0
+	case 0x5f01:
+		/* VGA POST - panel type */
+		/* FIXME: Don't hardcode panel type */
+		/* Panel Type Number */
+		X86_CX = 0;
+		res = 0;
+		break;
+	case 0x5f02:
+		{
+			/* Boot device selection */
+			X86_BL = INT15_5F02_BL_HWOPT_CRTCONN;
+			/* FIXME: or 0 ? */
+			X86_BH = 0;	// INT15_5F02_BH_TV_CONN_DEFAULT;
+			X86_EBX = 0;	//  INT15_5F02_EBX_HDTV_RGB;
+			X86_ECX = INT15_5F02_ECX_DISPLAY_CRT;
+			//X86_ECX |= INT15_5F02_ECX_TV_MODE_RGB;
+			//X86_ECX |= INT15_5F02_ECX_HDTV_1080P;
+			X86_DL = INT15_5F02_DL_TV_LAYOUT_DEFAULT;
+			res = 0;
+			break;
+		}
+#endif
+	case 0x5f18:
+		X86_BL = vx900_int15_get_5f18_bl();
+		res = 0;
+		break;
+#if 0
+	case 0x5f2a:
+		/* Get SSC Control Settings */
+		/* FIXME: No idea what this does. Just disable this feature
+		 * for now */
+		X86_CX = INT15_5F2A_CX_SSC_ENABLE;
+		res = 0;
+		break;
+	case 0x5f2b:
+		/* Engine clock setting */
+		/* FIXME: ECLK fixed 250MHz ? */
+		X86_EBX = INT15_5F2B_EBX_ECLK_250MHZ;
+		break;
+#endif
+	default:
+		printk(BIOS_DEBUG, "Unsupported INT15 call %04x!\n",
+		       X86_AX & 0xffff);
+		X86_AX = 0;
+		res = -1;
+		break;
+	}
+
+	if (res == 0)
+		X86_AX = 0x5f;
+	else
+		X86_AX = 0;
+	return X86_AX;
+}
+#endif
+
+static void mainboard_enable(device_t dev)
+{
+	(void)dev;
+
+#if CONFIG_VGA_ROM_RUN
+	print_debug("Installing INT15 handler...\n");
+	mainboard_interrupt_handlers(0x15, &vx900_int15_handler);
+#endif
+}
+
+struct chip_operations mainboard_ops = {
+	CHIP_NAME("VIA EPIA-M850 Mainboard")
+	    .enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/via/epia-m850/romstage.c b/src/mainboard/via/epia-m850/romstage.c
new file mode 100644
index 0000000000..364de4844b
--- /dev/null
+++ b/src/mainboard/via/epia-m850/romstage.c
@@ -0,0 +1,130 @@
+/*
+ * This file is part of the coreboot project.
+ *
+  * Copyright (C) 2011-2012  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Inspired from the EPIA-M700
+ */
+#undef CONFIG_COLLECT_TIMESTAMPS
+#define CONFIG_COLLECT_TIMESTAMPS 1
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <device/pci_ids.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/io.h>
+#include <arch/hlt.h>
+#include <console/console.h>
+#include <lib.h>
+#include <cpu/x86/bist.h>
+#include <string.h>
+#include <timestamp.h>
+#include <console/cbmem_console.h>
+
+#include "northbridge/via/vx900/early_vx900.h"
+#include "northbridge/via/vx900/raminit.h"
+/* FIXME: This is the only .c include we couldn't get rid of */
+#include "superio/fintek/f81865f/f81865f_early_serial.c"
+
+#define SERIAL_DEV PNP_DEV(0x4e, 0x10)
+
+static inline u64 tsc2u64(tsc_t tsc)
+{
+	return ((u64) tsc.hi << 32) | tsc.lo;
+}
+
+/* FIXME: This board comes in two flavours. This is for the faster CPU, but
+ * will probably not be correct for the other CPU */
+#define TSC_PER_USEC 1297
+static inline u32 tsc2ms(u64 end, u64 start)
+{
+	return ((u32) (end - start) / TSC_PER_USEC) / 1000;
+}
+
+/* cache_as_ram.inc jumps to here. */
+void main(unsigned long bist)
+{
+	u32 tolm;
+	u64 start, end;
+	tsc_t tsc_at_romstage_start = rdtsc();
+
+	/* First thing we need to do on the VX900, before anything else */
+	vx900_enable_pci_config_space();
+
+	/* Serial console is easy to take care of */
+	f81865f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+	console_init();
+	print_debug("Console initialized. \n");
+
+	vx900_cpu_bus_interface_setup();
+
+	/* Be smart. Get this info */
+	vx900_print_strapping_info();
+	/* DEVEL helper */
+	vx900_disable_auto_reboot();
+	/* Halt if there was a built-in self test failure. */
+	report_bist_failure(bist);
+
+	/* Oh, almighty, give us the SMBUS */
+	enable_smbus();
+
+	tsc_t tsc_before_raminit = rdtsc();
+	/* Now we can worry about raminit.
+	 * This board only has DDR3, so no need to worry about which DRAM type
+	 * to use */
+	dimm_layout dimms = { {0x50, 0x51, SPD_END_LIST} };
+	vx900_init_dram_ddr3(&dimms);
+	tsc_t tsc_after_raminit = rdtsc();
+
+	/* TODO: All these ram_checks are here to ensure we test most of the RAM
+	 * below 4G. They should not be needed once VX900 raminit is stable */
+	ram_check(0, 0x80);
+	ram_check(512 << 10, 0x80);
+	ram_check((1 << 20) - (1 << 10), 0x80);
+	ram_check((1 << 24), 0x80);
+	ram_check((512 + 256 - 1) << 20, 0x80);
+	ram_check(0x80c0000, 0x80);
+	tolm = ((pci_read_config16(MCU, 0x84) & 0xfff0) >> 4) << 20;
+	if (tolm > (1 * (u32) GiB))
+		ram_check(1024 << 10, 0x80);
+	if (tolm > (2 * (u32) GiB))
+		ram_check(2048 << 20, 0x80);
+
+	print_debug("We passed RAM verify\n");
+#ifdef GONFIG_EARLY_CBMEM_INIT
+	/* We got RAM working, now we can write the timestamps to RAM */
+	cbmem_initialize();
+	timestamp_init(tsc_at_romstage_start);
+	timestamp_add(TS_START_ROMSTAGE, tsc_at_romstage_start);
+	timestamp_add(TS_BEFORE_INITRAM, tsc_before_raminit);
+	timestamp_add(TS_AFTER_INITRAM, tsc_after_raminit);
+	timestamp_add_now(TS_END_ROMSTAGE);
+#endif
+	/* FIXME: See if this is needed or take this out please */
+	/* Disable Memcard and SDIO */
+	pci_mod_config8(LPC, 0x51, 0, (1 << 7) | (1 << 4));
+
+	/* Informative character. Could be removed at a later time. */
+	start = tsc2u64(tsc_at_romstage_start);
+	end = tsc2u64(tsc_before_raminit);
+	printk(BIOS_INFO, "Before raminit %ums\n", tsc2ms(end, start));
+
+	start = end;
+	end = tsc2u64(tsc_after_raminit);
+	printk(BIOS_INFO, "Actual Raminit %ums\n", tsc2ms(end, start));
+}