LynxPoint: Move RCBA helper function to its own file

So it can get used in both romstage and ramstage.

Change-Id: Ief9eaafdd91df2a7b668de1a9b83aea3af3ff894
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/2802
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/southbridge/intel/lynxpoint/Makefile.inc

@@ -33,6 +33,7 @@ ramstage-y += usb_ehci.c
 ramstage-y += me_9.x.c
 ramstage-y += smbus.c
 
+ramstage-y += rcba.c
 ramstage-y += me_status.c
 ramstage-y += reset.c
 ramstage-y += watchdog.c
@@ -48,7 +49,7 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me_9.x.c finalize.c
 
 romstage-y += early_usb.c early_smbus.c early_me.c me_status.c early_pch.c
 romstage-$(CONFIG_USBDEBUG) += usb_debug.c
-romstage-y += reset.c early_spi.c
+romstage-y += reset.c early_spi.c rcba.c
 
 ifeq ($(CONFIG_INTEL_LYNXPOINT_LP),y)
 romstage-y += lp_gpio.c

src/southbridge/intel/lynxpoint/early_pch.c

@@ -95,49 +95,6 @@ static void pch_enable_lpc(void)
 	pci_write_config16(dev, LPC_EN, lpc_config);
 }
 
-static void pch_config_rcba(const struct rcba_config_instruction *rcba_config)
-{
-	const struct rcba_config_instruction *rc;
-	u32 value;
-
-	rc = rcba_config;
-	while (rc->command != RCBA_COMMAND_END)
-	{
-		if ((rc->command & RCBA_REG_SIZE_MASK) == RCBA_REG_SIZE_16) {
-			switch (rc->command & RCBA_COMMAND_MASK) {
-			case RCBA_COMMAND_SET:
-				RCBA16(rc->reg) = (u16)rc->or_value;
-				break;
-			case RCBA_COMMAND_READ:
-				(void)RCBA16(rc->reg);
-				break;
-			case RCBA_COMMAND_RMW:
-				value = RCBA16(rc->reg);
-				value &= rc->mask;
-				value |= rc->or_value;
-				RCBA16(rc->reg) = (u16)value;
-				break;
-			}
-		} else {
-			switch (rc->command & RCBA_COMMAND_MASK) {
-			case RCBA_COMMAND_SET:
-				RCBA32(rc->reg) = rc->or_value;
-				break;
-			case RCBA_COMMAND_READ:
-				(void)RCBA32(rc->reg);
-				break;
-			case RCBA_COMMAND_RMW:
-				value = RCBA32(rc->reg);
-				value &= rc->mask;
-				value |= rc->or_value;
-				RCBA32(rc->reg) = value;
-				break;
-			}
-		}
-		rc++;
-	}
-}
-
 int early_pch_init(const void *gpio_map,
                    const struct rcba_config_instruction *rcba_config)
 {

src/southbridge/intel/lynxpoint/pch.h

@@ -83,30 +83,6 @@
 void intel_pch_finalize_smm(void);
 #endif
 
-#if !defined(__ASSEMBLER__) && !defined(__ROMCC__)
-#if !defined(__PRE_RAM__) && !defined(__SMM__)
-#include <device/device.h>
-#include <arch/acpi.h>
-#include "chip.h"
-int pch_silicon_revision(void);
-int pch_silicon_type(void);
-int pch_silicon_supported(int type, int rev);
-void pch_enable(device_t dev);
-void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
-#if CONFIG_ELOG
-void pch_log_state(void);
-#endif
-void acpi_create_intel_hpet(acpi_hpet_t * hpet);
-
-/* These helpers are for performing SMM relocation. */
-void southbridge_smm_init(void);
-void southbridge_trigger_smi(void);
-void southbridge_clear_smi_status(void);
-#else
-void enable_smbus(void);
-void enable_usb_bar(void);
-int smbus_read_byte(unsigned device, unsigned address);
-int early_spi_read(u32 offset, u32 size, u8 *buffer);
 
 /* State Machine configuration. */
 #define RCBA_REG_SIZE_MASK 0x8000
@@ -147,6 +123,31 @@ struct rcba_config_instruction
 	u32 or_value;
 };
 
+#if !defined(__ASSEMBLER__) && !defined(__ROMCC__)
+void pch_config_rcba(const struct rcba_config_instruction *rcba_config);
+#if !defined(__PRE_RAM__) && !defined(__SMM__)
+#include <device/device.h>
+#include <arch/acpi.h>
+#include "chip.h"
+int pch_silicon_revision(void);
+int pch_silicon_type(void);
+int pch_silicon_supported(int type, int rev);
+void pch_enable(device_t dev);
+void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
+#if CONFIG_ELOG
+void pch_log_state(void);
+#endif
+void acpi_create_intel_hpet(acpi_hpet_t * hpet);
+
+/* These helpers are for performing SMM relocation. */
+void southbridge_smm_init(void);
+void southbridge_trigger_smi(void);
+void southbridge_clear_smi_status(void);
+#else
+void enable_smbus(void);
+void enable_usb_bar(void);
+int smbus_read_byte(unsigned device, unsigned address);
+int early_spi_read(u32 offset, u32 size, u8 *buffer);
 int early_pch_init(const void *gpio_map,
                    const struct rcba_config_instruction *rcba_config);
 #endif

src/southbridge/intel/lynxpoint/rcba.c

@@ -0,0 +1,74 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+
+#include <console/console.h>
+#include <device/pci_def.h>
+#ifdef __PRE_RAM__
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#else
+#include <device/device.h>
+#include <device/pci.h>
+#endif
+#include "pch.h"
+
+void pch_config_rcba(const struct rcba_config_instruction *rcba_config)
+{
+	const struct rcba_config_instruction *rc;
+	u32 value;
+
+	rc = rcba_config;
+	while (rc->command != RCBA_COMMAND_END)
+	{
+		if ((rc->command & RCBA_REG_SIZE_MASK) == RCBA_REG_SIZE_16) {
+			switch (rc->command & RCBA_COMMAND_MASK) {
+			case RCBA_COMMAND_SET:
+				RCBA16(rc->reg) = (u16)rc->or_value;
+				break;
+			case RCBA_COMMAND_READ:
+				(void)RCBA16(rc->reg);
+				break;
+			case RCBA_COMMAND_RMW:
+				value = RCBA16(rc->reg);
+				value &= rc->mask;
+				value |= rc->or_value;
+				RCBA16(rc->reg) = (u16)value;
+				break;
+			}
+		} else {
+			switch (rc->command & RCBA_COMMAND_MASK) {
+			case RCBA_COMMAND_SET:
+				RCBA32(rc->reg) = rc->or_value;
+				break;
+			case RCBA_COMMAND_READ:
+				(void)RCBA32(rc->reg);
+				break;
+			case RCBA_COMMAND_RMW:
+				value = RCBA32(rc->reg);
+				value &= rc->mask;
+				value |= rc->or_value;
+				RCBA32(rc->reg) = value;
+				break;
+			}
+		}
+		rc++;
+	}
+}
+