sb/intel/*: Delete early_spi

The file and all of it's functions are unused. Drop the dead code.

Change-Id: Iaddd7a688d431d40f38293939e084d19b286aed4
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32688
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: David Guckian
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

9 files changed, 0 insertions, 274 deletions

diff --git a/src/soc/intel/baytrail/include/soc/romstage.h b/src/soc/intel/baytrail/include/soc/romstage.h
index 3e8b6a27ef..fffce7e317 100644
--- a/src/soc/intel/baytrail/include/soc/romstage.h
+++ b/src/soc/intel/baytrail/include/soc/romstage.h
@@ -37,7 +37,6 @@ void gfx_init(void);
 void tco_disable(void);
 void punit_init(void);
 void set_max_freq(void);
-int early_spi_read_wpsr(u8 *sr);
 
 #if CONFIG(ENABLE_BUILTIN_COM1)
 void byt_config_com1_and_enable(void);
diff --git a/src/soc/intel/baytrail/romstage/Makefile.inc b/src/soc/intel/baytrail/romstage/Makefile.inc
index f1a3463d20..d43a6fb6e3 100644
--- a/src/soc/intel/baytrail/romstage/Makefile.inc
+++ b/src/soc/intel/baytrail/romstage/Makefile.inc
@@ -5,4 +5,3 @@ romstage-y += raminit.c
 romstage-$(CONFIG_ENABLE_BUILTIN_COM1) += uart.c
 romstage-y += gfx.c
 romstage-y += pmc.c
-romstage-y += early_spi.c
diff --git a/src/soc/intel/baytrail/romstage/early_spi.c b/src/soc/intel/baytrail/romstage/early_spi.c
deleted file mode 100644
index 72e9b2cdae..0000000000
--- a/src/soc/intel/baytrail/romstage/early_spi.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2014 Google Inc.  All rights reserved.
- *
- * 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.
- */
-
-#include <delay.h>
-#include <console/console.h>
-
-#include <soc/iomap.h>
-#include <soc/romstage.h>
-#include <soc/spi.h>
-
-#define SPI_CYCLE_DELAY 10				/* 10us */
-#define SPI_CYCLE_TIMEOUT 400000 / SPI_CYCLE_DELAY	/* 400ms */
-
-#define SPI8(x) *((volatile u8 *)(SPI_BASE_ADDRESS + x))
-#define SPI16(x) *((volatile u16 *)(SPI_BASE_ADDRESS + x))
-#define SPI32(x) *((volatile u32 *)(SPI_BASE_ADDRESS + x))
-
-/* Minimal set of commands to read wpsr from SPI. Don't use this code outside
- * romstage -- it trashes the opmenu table.
- * Returns 0 on success, < 0 on failure. */
-int early_spi_read_wpsr(u8 *sr)
-{
-	int timeout = SPI_CYCLE_TIMEOUT;
-
-	/* No address associated with rdsr */
-	SPI8(OPTYPE) = 0x0;
-	/* Setup opcode[0] = read wpsr */
-	SPI8(OPMENU0) = 0x5;
-
-	/* Start transaction */
-	SPI16(SSFC) = DATA_CYCLE | SPI_CYCLE_GO;
-
-	/* Wait for error / complete status */
-	while (timeout--) {
-		u16 status = SPI16(SSFS);
-		if (status & FLASH_CYCLE_ERROR) {
-			printk(BIOS_ERR, "SPI rdsr failed\n");
-			return -1;
-		} else if (status & CYCLE_DONE_STATUS)
-			break;
-
-		udelay(SPI_CYCLE_DELAY);
-	}
-
-	*sr = SPI32(FDATA0) & 0xff;
-	return 0;
-}
diff --git a/src/soc/intel/braswell/include/soc/romstage.h b/src/soc/intel/braswell/include/soc/romstage.h
index 633233e6c6..4ecbd2c1f9 100644
--- a/src/soc/intel/braswell/include/soc/romstage.h
+++ b/src/soc/intel/braswell/include/soc/romstage.h
@@ -25,7 +25,6 @@
 void gfx_init(void);
 void tco_disable(void);
 void punit_init(void);
-int early_spi_read_wpsr(u8 *sr);
 void set_max_freq(void);
 
 /* romstage_common.c functions */
diff --git a/src/soc/intel/braswell/romstage/Makefile.inc b/src/soc/intel/braswell/romstage/Makefile.inc
index c3ed415dcc..15de822041 100644
--- a/src/soc/intel/braswell/romstage/Makefile.inc
+++ b/src/soc/intel/braswell/romstage/Makefile.inc
@@ -1,3 +1,2 @@
-romstage-y += early_spi.c
 romstage-y += pmc.c
 romstage-y += romstage.c
diff --git a/src/soc/intel/braswell/romstage/early_spi.c b/src/soc/intel/braswell/romstage/early_spi.c
deleted file mode 100644
index 0ca5ef521f..0000000000
--- a/src/soc/intel/braswell/romstage/early_spi.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2014 Google Inc.  All rights reserved.
- * Copyright (C) 2015 Intel Corp.
- *
- * 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.
- */
-
-#include <delay.h>
-#include <console/console.h>
-
-#include <soc/iomap.h>
-#include <soc/romstage.h>
-#include <soc/spi.h>
-
-#define SPI_CYCLE_DELAY 10				/* 10us */
-#define SPI_CYCLE_TIMEOUT (400000 / SPI_CYCLE_DELAY)	/* 400ms */
-
-#define SPI8(x) (*((volatile u8 *)(SPI_BASE_ADDRESS + (x))))
-#define SPI16(x) (*((volatile u16 *)(SPI_BASE_ADDRESS + (x))))
-#define SPI32(x) (*((volatile u32 *)(SPI_BASE_ADDRESS + (x))))
-
-/*
- * Minimal set of commands to read wpsr from SPI. Don't use this code outside
- * romstage -- it trashes the opmenu table.
- * Returns 0 on success, < 0 on failure.
- */
-int early_spi_read_wpsr(u8 *sr)
-{
-	int timeout = SPI_CYCLE_TIMEOUT;
-
-	/* No address associated with rdsr */
-	SPI8(OPTYPE) = 0x0;
-	/* Setup opcode[0] = read wpsr */
-	SPI8(OPMENU0) = 0x5;
-
-	/* Start transaction */
-	SPI16(SSFC) = DATA_CYCLE | SPI_CYCLE_GO;
-
-	/* Wait for error / complete status */
-	while (timeout--) {
-		u16 status = SPI16(SSFS);
-		if (status & FLASH_CYCLE_ERROR) {
-			printk(BIOS_ERR, "SPI rdsr failed\n");
-			return -1;
-		} else if (status & CYCLE_DONE_STATUS)
-			break;
-
-		udelay(SPI_CYCLE_DELAY);
-	}
-
-	*sr = SPI32(FDATA0) & 0xff;
-	return 0;
-}
diff --git a/src/soc/intel/broadwell/include/soc/romstage.h b/src/soc/intel/broadwell/include/soc/romstage.h
index ac8265fb4c..cd37cf6316 100644
--- a/src/soc/intel/broadwell/include/soc/romstage.h
+++ b/src/soc/intel/broadwell/include/soc/romstage.h
@@ -46,7 +46,4 @@ void intel_early_me_status(void);
 void enable_smbus(void);
 int smbus_read_byte(unsigned int device, unsigned int address);
 
-int early_spi_read(u32 offset, u32 size, u8 *buffer);
-int early_spi_read_wpsr(u8 *sr);
-
 #endif
diff --git a/src/soc/intel/broadwell/romstage/Makefile.inc b/src/soc/intel/broadwell/romstage/Makefile.inc
index ea17d67061..a53cd95cd5 100644
--- a/src/soc/intel/broadwell/romstage/Makefile.inc
+++ b/src/soc/intel/broadwell/romstage/Makefile.inc
@@ -6,6 +6,5 @@ romstage-y += raminit.c
 romstage-y += report_platform.c
 romstage-y += romstage.c
 romstage-y += smbus.c
-romstage-y += spi.c
 romstage-y += systemagent.c
 romstage-$(CONFIG_DRIVERS_UART_8250MEM) += uart.c
diff --git a/src/soc/intel/broadwell/romstage/spi.c b/src/soc/intel/broadwell/romstage/spi.c
deleted file mode 100644
index cb0509d104..0000000000
--- a/src/soc/intel/broadwell/romstage/spi.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2014 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.
- */
-
-#include <console/console.h>
-#include <device/pci_def.h>
-#include <delay.h>
-#include <soc/spi.h>
-#include <soc/rcba.h>
-#include <soc/romstage.h>
-
-#define SPI_DELAY 10     /* 10us */
-#define SPI_RETRY 200000 /* 2s */
-
-static int early_spi_read_block(u32 offset, u8 size, u8 *buffer)
-{
-	u32 *ptr32 = (u32 *)buffer;
-	u32 i;
-
-	/* Clear status bits */
-	SPIBAR16(SPIBAR_HSFS) |= SPIBAR_HSFS_AEL | SPIBAR_HSFS_FCERR |
-		SPIBAR_HSFS_FDONE;
-
-	if (SPIBAR16(SPIBAR_HSFS) & SPIBAR_HSFS_SCIP) {
-		printk(BIOS_ERR, "SPI ERROR: transaction in progress\n");
-		return -1;
-	}
-
-	/* Set flash address */
-	SPIBAR32(SPIBAR_FADDR) = offset;
-
-	/* Setup read transaction */
-	SPIBAR16(SPIBAR_HSFC) = SPIBAR_HSFC_BYTE_COUNT(size) |
-		SPIBAR_HSFC_CYCLE_READ;
-
-	/* Start transaction */
-	SPIBAR16(SPIBAR_HSFC) |= SPIBAR_HSFC_GO;
-
-	/* Wait for completion */
-	for (i = 0; i < SPI_RETRY; i++) {
-		if (SPIBAR16(SPIBAR_HSFS) & SPIBAR_HSFS_SCIP) {
-			/* Cycle in progress, wait 1ms */
-			udelay(SPI_DELAY);
-			continue;
-		}
-
-		if (SPIBAR16(SPIBAR_HSFS) & SPIBAR_HSFS_AEL) {
-			printk(BIOS_ERR, "SPI ERROR: Access Error\n");
-			return -1;
-
-		}
-
-		if (SPIBAR16(SPIBAR_HSFS) & SPIBAR_HSFS_FCERR) {
-			printk(BIOS_ERR, "SPI ERROR: Flash Cycle Error\n");
-			return -1;
-		}
-		break;
-	}
-
-	if (i >= SPI_RETRY) {
-		printk(BIOS_ERR, "SPI ERROR: Timeout\n");
-		return -1;
-	}
-
-	/* Read the data */
-	for (i = 0; i < size; i += sizeof(u32)) {
-		if (size-i >= 4) {
-			/* reading >= dword */
-			*ptr32++ = SPIBAR32(SPIBAR_FDATA(i/sizeof(u32)));
-		} else {
-			/* reading < dword */
-			u8 j, *ptr8 = (u8 *)ptr32;
-			u32 temp = SPIBAR32(SPIBAR_FDATA(i/sizeof(u32)));
-			for (j = 0; j < (size-i); j++) {
-				*ptr8++ = temp & 0xff;
-				temp >>= 8;
-			}
-		}
-	}
-
-	return size;
-}
-
-int early_spi_read(u32 offset, u32 size, u8 *buffer)
-{
-	u32 current = 0;
-
-	while (size > 0) {
-		u8 count = (size < 64) ? size : 64;
-		if (early_spi_read_block(offset + current, count,
-					 buffer + current) < 0)
-			return -1;
-		size -= count;
-		current += count;
-	}
-
-	return 0;
-}
-
-/*
- * Minimal set of commands to read WPSR from SPI.
- * Don't use this code outside romstage -- it trashes the opmenu table.
- * Returns 0 on success, < 0 on failure.
- */
-int early_spi_read_wpsr(u8 *sr)
-{
-	int retry;
-
-	/* No address associated with rdsr */
-	SPIBAR8(SPIBAR_OPTYPE) = 0x0;
-	/* Setup opcode[0] = read wpsr */
-	SPIBAR8(SPIBAR_OPMENU_LOWER) = 0x5;
-
-	/* Start transaction */
-	SPIBAR16(SPIBAR_SSFC) = SPIBAR_SSFC_DATA | SPIBAR_SSFC_GO;
-
-	/* Wait for error / complete status */
-	for (retry = SPI_RETRY; retry; retry--) {
-		u16 status = SPIBAR16(SPIBAR_SSFS);
-		if (status & SPIBAR_SSFS_ERROR) {
-			printk(BIOS_ERR, "SPI rdsr failed\n");
-			return -1;
-		} else if (status & SPIBAR_SSFS_DONE) {
-			break;
-		}
-
-		udelay(SPI_DELAY);
-	}
-
-	*sr = SPIBAR32(SPIBAR_FDATA(0)) & 0xff;
-	return 0;
-}