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authorAlexandru Gagniuc <mr.nuke.me@gmail.com>2015-10-03 13:20:26 -0700
committerAlexandru Gagniuc <mr.nuke.me@gmail.com>2015-10-03 22:23:24 +0000
commitfb50124d22014742b6990a95df87a7a828e891b6 (patch)
tree2de7958eedfd8b2ce34f148af251ad6ce13930e4 /src/southbridge/intel/fsp_bd82x6x/early_smbus.c
parentecf2eb463faff04ab6061eb5dfd8da26c5026a97 (diff)
Remove sandybridge and ivybridge FSP code path
We already have two other code paths for this silicon. Maintaining the FSP path as well doesn't make much sense. There was only one board to use this code, and it's a reference board that I doubt anyone still owns or uses. Change-Id: I4fcfa6c56448416624fd26418df19b354eb72f39 Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/11789 Tested-by: build bot (Jenkins) Reviewed-by: Philipp Deppenwiese <zaolin@das-labor.org>
Diffstat (limited to 'src/southbridge/intel/fsp_bd82x6x/early_smbus.c')
-rw-r--r--src/southbridge/intel/fsp_bd82x6x/early_smbus.c215
1 files changed, 0 insertions, 215 deletions
diff --git a/src/southbridge/intel/fsp_bd82x6x/early_smbus.c b/src/southbridge/intel/fsp_bd82x6x/early_smbus.c
deleted file mode 100644
index 930c3b437a..0000000000
--- a/src/southbridge/intel/fsp_bd82x6x/early_smbus.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2008-2009 coresystems GmbH
- * Copyright (C) 2012 Sage Electronic Engineering, LLC
- *
- * 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.
- */
-
-#include <arch/io.h>
-#include <console/console.h>
-#include <device/pci_ids.h>
-#include <device/pci_def.h>
-#include <device/smbus_def.h>
-#include "pch.h"
-
-#define FULL_RW 0x48
-#define QUICK_RW 0x44
-
-static void smbus_delay(void)
-{
- inb(0xeb);
-}
-
-/** \brief block until the SMBus is no longer busy, or it times out
- *
- * \param smbus_base IO base address of the SMBus
- */
-static int smbus_wait_until_ready(u16 smbus_base)
-{
- unsigned loops = SMBUS_TIMEOUT;
- unsigned char byte;
- do {
- smbus_delay();
- if (--loops == 0)
- break;
- byte = inb(smbus_base + SMBHSTSTAT);
- } while (byte & HSTSTS_HOST_BUSY);
- return loops ? 0 : -1;
-}
-
-/** \brief block until the SMBus is no longer busy or in use, or it times out
- *
- * \param smbus_base IO base address of the SMBus
- */
-static int smbus_wait_until_done(u16 smbus_base)
-{
- unsigned loops = SMBUS_TIMEOUT;
- unsigned char byte;
- do {
- smbus_delay();
- if (--loops == 0)
- break;
- byte = inb(smbus_base + SMBHSTSTAT);
- } while ((byte & HSTSTS_HOST_BUSY) ||
- (byte & ~(HSTSTS_INUSE_STS | HSTSTS_HOST_BUSY)) == 0);
- return loops ? 0 : -1;
-}
-/** \brief Sets the SMBus BAR, and configures it to run
- *
- */
-void enable_smbus(void)
-{
- device_t dev;
-
- /* Set the SMBus device statically. */
- dev = PCI_DEV(0x0, 0x1f, 0x3);
-
- /* Check to make sure we've got the right device. */
- if (pci_read_config16(dev, 0x0) != 0x8086) {
- die("SMBus controller not found!");
- }
-
- /* Set SMBus I/O base. */
- pci_write_config32(dev, SMB_BASE, SMBUS_IO_BASE | PCI_BASE_ADDRESS_SPACE_IO);
-
- /* Set SMBus enable. */
- pci_write_config8(dev, HOSTC, HST_EN);
-
- /* Set SMBus I/O space enable. */
- pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_IO);
-
- /* Disable interrupt generation. */
- outb(0, SMBUS_IO_BASE + SMBHSTCTL);
-
- /* Clear any lingering errors, so transactions can run. */
- outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
- printk(BIOS_DEBUG, "SMBus controller enabled.\n");
-}
-
-/** \brief generic smbus helper function to read & write to the smbus
- *
- * \details Configures the SMBus for the transaction, sets up the address
- * and data bytes, starts the command, waits for the command to
- * finish, and returns data if the command is a read.
- *
- * \param device The 8-bit device address, with the read / write bit set-up.
- *
- * \param addr_dat For full reads/writes, this contains the address within
- * the device of the byte being read/written. For quick writes,
- * this contains the data to write.
- *
- * \param data For full writes, this contains the Data to write to the
- * device. For all other transactions, this is ignored.
- *
- * \param command Contains the command for a full read/write (0x48) or the
- * command for a quick read/write (0x44)
- *
- * \return Data read from the device, or -1 if there was an error
- */
-static s16 smbus_rw_byte(u8 device, u8 addr_dat, u8 data, u8 command)
-{
- u8 global_status_register;
-
- if (smbus_wait_until_ready(SMBUS_IO_BASE) < 0)
- return SMBUS_WAIT_UNTIL_READY_TIMEOUT;
-
- /*** Set up transaction ***/
-
- /* Disable interrupts */
- outb(inb(SMBUS_IO_BASE + SMBHSTCTL) & (~1), SMBUS_IO_BASE + SMBHSTCTL);
-
- /* Set the device being talked to using supplied device address*/
- outb(device, SMBUS_IO_BASE + SMBXMITADD);
-
- /* Set the address and data byte */
- outb(addr_dat, SMBUS_IO_BASE + SMBHSTCMD);
- outb(data, SMBUS_IO_BASE + SMBHSTDAT0);
-
- /* Clear any lingering errors, so the transaction will run */
- outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
-
- /* Start the command */
- outb(command, SMBUS_IO_BASE + SMBHSTCTL);
-
- /* Poll for transaction completion */
- if (smbus_wait_until_done(SMBUS_IO_BASE) < 0)
- return SMBUS_WAIT_UNTIL_DONE_TIMEOUT;
-
- global_status_register = inb(SMBUS_IO_BASE + SMBHSTSTAT);
-
- /* Ignore the "In Use" status... */
- global_status_register &= ~(HSTSTS_SMBALERT_STS | HSTSTS_INUSE_STS);
-
- /* Read results - INTR gets set when a command is completed successfully */
- data = inb(SMBUS_IO_BASE + SMBHSTDAT0);
- if (global_status_register != HSTSTS_INTR)
- return SMBUS_ERROR;
-
- return data;
-}
-
-/** \brief Sends an address and writes one byte of data
- *
- * \param device The 7-bit address of the device being written to
- *
- * \param address The address within the device to write the data to
- *
- * \param data The data value to write to the device
- *
- * \return -1 if there was an error
- */
-s16 smbus_write_single_byte(u8 device, u8 address, u8 data)
-{
- return (smbus_rw_byte(device << 1, address, data, FULL_RW));
-}
-
-/** \brief Sends an address and reads one byte of data
- *
- * \param device The 7-bit address of the device being written to
- *
- * \param address The address within the device to write the data to
- *
- * \return Data read from the device, or -1 if there was an error
- */
-int smbus_read_byte(unsigned device, unsigned address)
-{
- return (smbus_rw_byte((device << 1) | 1, address, 0, FULL_RW));
-}
-
-/** \brief Sends one byte of data with no address byte
- *
- * \param device The 7-bit address of the device being written to
- *
- * \param data The data value to write to the device
- *
- * \return -1 if there was an error
- */
-s16 smbus_quick_write(u8 device, u8 data)
-{
- return (smbus_rw_byte(device << 1, data, 0, QUICK_RW));
-}
-
-/** \brief Reads one byte of data without sending an address byte
- *
- * \param device The 7-bit address of the device being written to
- *
- * \return Data read from the device, or -1 if there was an error
- */
-s16 smbus_quick_read(u8 device)
-{
- return (smbus_rw_byte((device << 1) | 1, 0, 0, QUICK_RW));
-}