mb/asrock/b85m_pro4: Add new mainboard

This is a µATX mainboard with a LGA1150 socket and four DDR3 DIMM slots.

Working:
 - All four DIMM slots
 - Serial port to emit spam
 - Some USB ports
 - Integrated graphics (libgfxinit)
 - HDMI and DVI
 - Intel GbE
 - All PCIe ports
 - Both PCI ports behind the ASM1083 PCI bridge
 - At least one SATA port
 - RAM initialization with MRC binary
 - Flashing with flashrom
 - S3 suspend/resume
 - Rear audio output
 - VBT
 - SeaBIOS to boot Arch Linux

Not working:
 - PS/2 keyboard (detected as mouse)

Untested:
 - The other audio jacks
 - S/PDIF
 - VGA
 - EHCI debug
 - Front USB headers
 - Non-Linux OSes
 - TPM header
 - Parallel port

Change-Id: I10a16dfc56f2aa88648c8aaaba4feab40c491504
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36770
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/src/mainboard/asrock/b85m_pro4/bootblock.c b/src/mainboard/asrock/b85m_pro4/bootblock.c
new file mode 100644
index 0000000000..6a66121aa6
--- /dev/null
+++ b/src/mainboard/asrock/b85m_pro4/bootblock.c
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2010 coresystems GmbH
+ * Copyright (C) 2012 Google Inc.
+ * Copyright (C) 2018 Tristan Corrick <tristan@corrick.kiwi>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#include <device/pnp_ops.h>
+#include <superio/nuvoton/common/nuvoton.h>
+#include <superio/nuvoton/nct6776/nct6776.h>
+#include <southbridge/intel/lynxpoint/pch.h>
+
+#define GLOBAL_DEV PNP_DEV(0x2e, 0)
+#define SERIAL_DEV PNP_DEV(0x2e, NCT6776_SP1)
+#define ACPI_DEV   PNP_DEV(0x2e, NCT6776_ACPI)
+
+void mainboard_config_superio(void)
+{
+	nuvoton_pnp_enter_conf_state(GLOBAL_DEV);
+
+	/* Select HWM/LED functions instead of floppy functions */
+	pnp_write_config(GLOBAL_DEV, 0x1c, 0x03);
+	pnp_write_config(GLOBAL_DEV, 0x24, 0x24);
+
+	/* Power RAM in S3 and let the PCH handle power failure actions */
+	pnp_set_logical_device(ACPI_DEV);
+	pnp_write_config(ACPI_DEV, 0xe4, 0x70);
+
+	nuvoton_pnp_exit_conf_state(GLOBAL_DEV);
+
+	/* Enable UART */
+	nuvoton_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+}