nb/intel/x4x: Move boilerplate romstage to a common location

This adds 3 mb romstage callbacks:
 - void mb_lpc_setup(void) to be used to set up the superio
 - void mb_get_spd_map(u8 spd_map[4]) to get I2C addresses of SPDs
 - (optional)mb_pre_raminit_setup(int s3_resume) to set up mainboard
 specific things before the raminit.

Change-Id: Ic3b838856b3076ed05eeeea7c0656c2078462272
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36758
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 9 insertions, 39 deletions

diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/romstage.c b/src/mainboard/gigabyte/ga-g41m-es2l/romstage.c
index 16b157b2dd..bde4f33bef 100644
--- a/src/mainboard/gigabyte/ga-g41m-es2l/romstage.c
+++ b/src/mainboard/gigabyte/ga-g41m-es2l/romstage.c
@@ -14,14 +14,9 @@
  * GNU General Public License for more details.
  */
 
-#include <stdint.h>
-#include <device/pci_def.h>
 #include <device/pci_ops.h>
-#include <console/console.h>
 #include <southbridge/intel/i82801gx/i82801gx.h>
-#include <southbridge/intel/common/pmclib.h>
 #include <northbridge/intel/x4x/x4x.h>
-#include <arch/romstage.h>
 #include <superio/ite/it8718f/it8718f.h>
 #include <superio/ite/common/ite.h>
 
@@ -34,7 +29,7 @@
  * We should use standard gpio.h eventually
  */
 
-static void mb_lpc_init(void)
+void mb_lpc_setup(void)
 {
 	pci_devfn_t dev;
 
@@ -73,6 +68,11 @@ static void mb_lpc_init(void)
 	ite_reg_write(EC_DEV, 0x70, 0x00); // Don't use IRQ9
 	ite_reg_write(EC_DEV, 0x30, 0x01); // Enable
 
+	ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+
+	/* Disable SIO reboot */
+	ite_reg_write(GPIO_DEV, 0xEF, 0x7E);
+
 	/* IRQ routing */
 	RCBA32(D31IP) = 0x00002210;
 	RCBA32(D30IP) = 0x00002100;
@@ -84,38 +84,8 @@ static void mb_lpc_init(void)
 	RCBA32(D27IR) = 0x00000000;
 }
 
-void mainboard_romstage_entry(void)
+void mb_get_spd_map(u8 spd_map[4])
 {
-	//                          ch0      ch1
-	const u8 spd_addrmap[4] = { 0x50, 0, 0x52, 0 };
-	u8 boot_path = 0;
-	u8 s3_resume;
-
-	/* Set southbridge and Super I/O GPIOs. */
-	i82801gx_lpc_setup();
-	mb_lpc_init();
-	ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
-
-	/* Disable SIO reboot */
-	ite_reg_write(GPIO_DEV, 0xEF, 0x7E);
-
-	console_init();
-
-	enable_smbus();
-
-	i82801gx_early_init();
-	x4x_early_init();
-
-	s3_resume = southbridge_detect_s3_resume();
-	if (s3_resume)
-		boot_path = BOOT_PATH_RESUME;
-	if (MCHBAR32(PMSTS_MCHBAR) & PMSTS_WARM_RESET)
-		boot_path = BOOT_PATH_WARM_RESET;
-
-	sdram_initialize(boot_path, spd_addrmap);
-
-	x4x_late_init(s3_resume);
-
-	printk(BIOS_DEBUG, "x4x late init complete\n");
-
+	spd_map[0] = 0x50;
+	spd_map[2] = 0x52;
 }