pcengines/apu1: Switch away from ROMCC_BOOTBLOCK

TEST=boot PC Engines apu1 with C bootblock patch and launch
Debian with Linux kernel 4.14.50

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I36af6d3871a57f462a7508745663d9759de1c47d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37332
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/pcengines/apu1/Kconfig

@@ -18,7 +18,6 @@ if BOARD_PCENGINES_APU1
 
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
-	select ROMCC_BOOTBLOCK
 	select CPU_AMD_AGESA_FAMILY14
 	select NORTHBRIDGE_AMD_AGESA_FAMILY14
 	select SOUTHBRIDGE_AMD_CIMX_SB800

src/mainboard/pcengines/apu1/Makefile.inc

@@ -21,6 +21,8 @@ pci$(stripped_ahcibios_id).rom-file := $(call strip_quotes,$(CONFIG_AHCI_BIOS_FI
 pci$(stripped_ahcibios_id).rom-type := optionrom
 endif
 
+bootblock-y += bootblock.c
+
 romstage-y += buildOpts.c
 romstage-y += BiosCallOuts.c
 romstage-y += OemCustomize.c

src/mainboard/pcengines/apu1/bootblock.c

@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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 <bootblock_common.h>
+#include <device/pnp_type.h>
+#include <superio/nuvoton/common/nuvoton.h>
+#include <superio/nuvoton/nct5104d/nct5104d.h>
+
+#define SIO_PORT 0x2e
+#define SERIAL_DEV PNP_DEV(SIO_PORT, NCT5104D_SP1)
+
+void bootblock_mainboard_early_init(void)
+{
+	nuvoton_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+}

src/mainboard/pcengines/apu1/romstage.c

@@ -61,7 +61,5 @@ static void early_lpc_init(void)
 
 void board_BeforeAgesa(struct sysinfo *cb)
 {
-	sb_Poweron_Init();
 	early_lpc_init();
-	nuvoton_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
 }