biostar/a68n_5200: Switch away from ROMCC_BOOTBLOCK

Following the example of change CB:37737 (ee8f969).
Switching was done by moving a SIO configuration and
the clocks setup from 'romstage.c' to 'bootblock.c'.

Tested-by: Damien Zammit <damien@zamaudio.com>
Signed-off-by: Mike Banon <mikebdp2@gmail.com>
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Change-Id: I2e710ac61843c09a055523c7971e4c05bae56a37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37872
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/mainboard/biostar/a68n_5200/Kconfig

@@ -15,14 +15,10 @@
 # GNU General Public License for more details.
 #
 
-config BOARD_BIOSTAR_A68N5200
-	def_bool n
-
 if BOARD_BIOSTAR_A68N5200
 
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
-	#select ROMCC_BOOTBLOCK
 	select CPU_AMD_AGESA_FAMILY16_KB
 	select NORTHBRIDGE_AMD_AGESA_FAMILY16_KB
 	select SOUTHBRIDGE_AMD_AGESA_YANGTZE

src/mainboard/biostar/a68n_5200/Kconfig.name

@@ -1,2 +1,2 @@
-#config BOARD_BIOSTAR_A68N5200
-#	bool"A68N-5200"
+config BOARD_BIOSTAR_A68N5200
+	bool "A68N-5200"

src/mainboard/biostar/a68n_5200/Makefile.inc

@@ -13,6 +13,8 @@
 # GNU General Public License for more details.
 #
 
+bootblock-y += bootblock.c
+
 romstage-y += buildOpts.c
 romstage-y += BiosCallOuts.c
 romstage-y += OemCustomize.c

src/mainboard/biostar/a68n_5200/bootblock.c

@@ -15,14 +15,10 @@
  * GNU General Public License for more details.
  */
 
+#include <amdblocks/acpimmio.h>
+#include <bootblock_common.h>
 #include <stdint.h>
-#include <amdblocks/acpimmio.h>
-#include <device/pci_def.h>
-#include <arch/io.h>
 #include <device/pci_ops.h>
-#include <northbridge/amd/agesa/state_machine.h>
-#include <southbridge/amd/agesa/hudson/hudson.h>
-#include <amdblocks/acpimmio.h>
 #include <superio/ite/common/ite.h>
 #include <superio/ite/it8728f/it8728f.h>
 
@@ -32,18 +28,20 @@
 
 static void sbxxx_enable_48mhzout(void)
 {
-	/* most likely programming to 48MHz out signal */
 	u32 reg32;
+
+	/* Set auxiliary output clock frequency on OSCOUT1 pin to be 48MHz */
 	reg32 = misc_read32(0x28);
 	reg32 &= 0xfff8ffff;
 	misc_write32(0x28, reg32);
 
+	/* Enable Auxiliary Clock1, disable FCH 14 MHz OscClk */
 	reg32 = misc_read32(0x40);
 	reg32 &= 0xffffbffb;
 	misc_write32(0x40, reg32);
 }
 
-void board_BeforeAgesa(struct sysinfo *cb)
+void bootblock_mainboard_early_init(void)
 {
 	u8 byte;
 
@@ -64,8 +62,10 @@ void board_BeforeAgesa(struct sysinfo *cb)
 	byte |= (1 << 6);  /* 0x3f8 */
 	pci_write_config8(dev, 0x44, byte);
 
-	/* run ite */
+	/* enable SIO clock */
 	sbxxx_enable_48mhzout();
+
+	/* Enable serial output on it8728f */
 	ite_conf_clkin(CLKIN_DEV, ITE_UART_CLK_PREDIVIDE_48);
 	ite_kill_watchdog(GPIO_DEV);
 	ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);

src/mainboard/biostar/a68n_5200/irq_tables.c

@@ -16,6 +16,7 @@
 #include <console/console.h>
 #include <string.h>
 #include <stdint.h>
+#include <device/pci_def.h>
 #include <arch/pirq_routing.h>
 
 static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,