sb/intel/lynxpoint: Drop RCBA reg script mechanism

It is no longer used anywhere. Drop it before it rots.

Change-Id: I4bc3d5bd898058e575144a3c6c3fccb78dcff2e2
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43099
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tristan Corrick <tristan@corrick.kiwi>

3 files changed, 1 insertions, 91 deletions

diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
index fa0ef0ba48..e3d056d4e6 100644
--- a/src/southbridge/intel/lynxpoint/Makefile.inc
+++ b/src/southbridge/intel/lynxpoint/Makefile.inc
@@ -22,7 +22,6 @@ else
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/hda_verb.c
 endif
 
-ramstage-y += rcba.c
 ramstage-y += me_status.c
 ramstage-y += acpi.c
 
@@ -34,7 +33,7 @@ smm-y += pmutil.c usb_ehci.c usb_xhci.c
 
 bootblock-y += early_pch.c
 romstage-y += early_usb.c early_smbus.c early_me.c me_status.c early_pch.c
-romstage-y += rcba.c pmutil.c
+romstage-y += pmutil.c
 
 ifeq ($(CONFIG_INTEL_LYNXPOINT_LP),y)
 romstage-y += lp_gpio.c
diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index 77377c43c7..7987486673 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -79,46 +79,6 @@ void usb_ehci_disable(pci_devfn_t dev);
 void usb_xhci_sleep_prepare(pci_devfn_t dev, u8 slp_typ);
 void usb_xhci_route_all(void);
 
-/* State Machine configuration. */
-#define RCBA_REG_SIZE_MASK 0x8000
-#define   RCBA_REG_SIZE_16   0x8000
-#define   RCBA_REG_SIZE_32   0x0000
-#define RCBA_COMMAND_MASK  0x000f
-#define   RCBA_COMMAND_SET   0x0001
-#define   RCBA_COMMAND_READ  0x0002
-#define   RCBA_COMMAND_RMW   0x0003
-#define   RCBA_COMMAND_END   0x0007
-
-#define RCBA_ENCODE_COMMAND(command_, reg_, mask_, or_value_) \
-	{ .command = command_,   \
-	  .reg = reg_,           \
-	  .mask = mask_,         \
-	  .or_value = or_value_  \
-	}
-#define RCBA_SET_REG_32(reg_, value_) \
-	RCBA_ENCODE_COMMAND(RCBA_REG_SIZE_32|RCBA_COMMAND_SET, reg_, 0, value_)
-#define RCBA_READ_REG_32(reg_) \
-	RCBA_ENCODE_COMMAND(RCBA_REG_SIZE_32|RCBA_COMMAND_READ, reg_, 0, 0)
-#define RCBA_RMW_REG_32(reg_, mask_, or_) \
-	RCBA_ENCODE_COMMAND(RCBA_REG_SIZE_32|RCBA_COMMAND_RMW, reg_, mask_, or_)
-#define RCBA_SET_REG_16(reg_, value_) \
-	RCBA_ENCODE_COMMAND(RCBA_REG_SIZE_16|RCBA_COMMAND_SET, reg_, 0, value_)
-#define RCBA_READ_REG_16(reg_) \
-	RCBA_ENCODE_COMMAND(RCBA_REG_SIZE_16|RCBA_COMMAND_READ, reg_, 0, 0)
-#define RCBA_RMW_REG_16(reg_, mask_, or_) \
-	RCBA_ENCODE_COMMAND(RCBA_REG_SIZE_16|RCBA_COMMAND_RMW, reg_, mask_, or_)
-#define RCBA_END_CONFIG \
-	RCBA_ENCODE_COMMAND(RCBA_COMMAND_END, 0, 0, 0)
-
-struct rcba_config_instruction
-{
-	u16 command;
-	u16 reg;
-	u32 mask;
-	u32 or_value;
-};
-
-void pch_config_rcba(const struct rcba_config_instruction *rcba_config);
 int pch_silicon_revision(void);
 int pch_silicon_id(void);
 int pch_silicon_type(void);
diff --git a/src/southbridge/intel/lynxpoint/rcba.c b/src/southbridge/intel/lynxpoint/rcba.c
deleted file mode 100644
index 9f62cd3b5f..0000000000
--- a/src/southbridge/intel/lynxpoint/rcba.c
+++ /dev/null
@@ -1,49 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <device/pci_def.h>
-#include <device/device.h>
-#include <device/pci.h>
-#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++;
-	}
-}