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, 15 insertions, 36 deletions

diff --git a/src/mainboard/asus/p5ql-em/romstage.c b/src/mainboard/asus/p5ql-em/romstage.c
index c7ade1c541..fa22a645d4 100644
--- a/src/mainboard/asus/p5ql-em/romstage.c
+++ b/src/mainboard/asus/p5ql-em/romstage.c
@@ -12,22 +12,22 @@
  * GNU General Public License for more details.
  */
 
-#include <device/pci_ops.h>
 #include <device/pnp_ops.h>
 #include <console/console.h>
-#include <southbridge/intel/i82801jx/i82801jx.h>
-#include <southbridge/intel/common/pmclib.h>
 #include <northbridge/intel/x4x/x4x.h>
 #include <cpu/x86/msr.h>
 #include <cpu/intel/speedstep.h>
-#include <arch/romstage.h>
 #include <cf9_reset.h>
 #include <superio/winbond/w83627dhg/w83627dhg.h>
 #include <superio/winbond/common/winbond.h>
 
 #define SERIAL_DEV PNP_DEV(0x2e, W83627DHG_SP1)
 #define GPIO_DEV PNP_DEV(0x2e, W83627DHG_GPIO2345_V)
-#define LPC_DEV PCI_DEV(0, 0x1f, 0)
+
+void mb_lpc_setup(void)
+{
+	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+}
 
 static u8 msr_get_fsb(void)
 {
@@ -103,41 +103,20 @@ static int setup_sio_gpio(void)
 	return need_reset;
 }
 
-void mainboard_romstage_entry(void)
+void mb_pre_raminit_setup(int s3_resume)
 {
-	/* This board has first dimm slot of each channel hooked up to
-	   rank0 and rank1, while the second dimm slot is only connected
-	   to rank1. The raminit does not support such setups
-	   const u8 spd_addrmap[4] = { 0x50, 0x51, 0x52, 0x53 }; */
-	const u8 spd_addrmap[4] = { 0x50, 0, 0x52, 0 };
-	u8 boot_path = 0;
-	u8 s3_resume;
-
-	/* Set southbridge and Super I/O GPIOs. */
-	i82801jx_lpc_setup();
-	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
-
-	console_init();
-
-	enable_smbus();
-
-	i82801jx_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;
-
 	if (!s3_resume && setup_sio_gpio()) {
 		printk(BIOS_DEBUG, "Needs reset to configure CPU BSEL straps\n");
 		full_reset();
 	}
+}
 
-	sdram_initialize(boot_path, spd_addrmap);
-
-	x4x_late_init(s3_resume);
-
-	printk(BIOS_DEBUG, "x4x late init complete\n");
+void mb_get_spd_map(u8 spd_map[4])
+{
+	/* This board has first dimm slot of each channel hooked up to
+	   rank0 and rank1, while the second dimm slot is only connected
+	   to rank1. The raminit does not support such setups. So only the
+	   first dimms of each channel are used. */
+	spd_map[0] = 0x50;
+	spd_map[2] = 0x52;
 }