mb/kontron: Add Kontron mAL10 COMe module support

This patch adds support for the Kontron mAL10 COMe module with the
Apollo Lake SoC together with Kontron T10-TNI carrierboard.

Working:
  - UART console and I2C on Kontron kempld;
  - USB2/3
  - Ethernet controller
  - eMMC
  - SATA
  - PCIe ports
  - IGD/DP
  - SMBus
  - HWM

Not tested:
  - IGD/LVDS
  - SDIO

TODO:
  - HDA (codec IDT 92HD73C1X5, currently disabled)

Tested payloads:
  - SeaBIOS
  - Tianocore, UEFIPayload - without video, EFI-shell in console only

Tested on COMe module with Intel Atom x5-E3940 processor (4 Core,
1.6/1.8GHz, 9.5W TDP). Xubuntu 18.04.2 was used as a bootable OS
(5.0.0-32-generic linux kernel)

Change-Id: Ib8432e10396f77eb05a71af1ccaaa4437a2e43ea
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39133
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/mainboard/kontron/mal10/bootblock.c b/src/mainboard/kontron/mal10/bootblock.c
new file mode 100644
index 0000000000..5c40e2dc6c
--- /dev/null
+++ b/src/mainboard/kontron/mal10/bootblock.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <bootblock_common.h>
+#include <intelblocks/lpc_lib.h>
+#include <ec/kontron/kempld/kempld.h>
+#include <variant/gpio.h>
+
+static void init_cpld(void)
+{
+	/* Set up LPC decoding for CPLD I/O port ranges */
+	lpc_open_pmio_window(0x0A80, 2);
+
+	/* Enable console serial ports */
+	lpc_io_setup_comm_a_b();
+	kempld_enable_uart_for_console();
+}
+
+void bootblock_mainboard_early_init(void)
+{
+	variant_early_gpio_configure();
+	init_cpld();
+}
+
+void bootblock_mainboard_init(void)
+{
+}