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sb/via/common: Drop unused code

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Change-Id: I803b9bba4067435e471e9565d3286f11a0a361a3
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36960
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Arthur Heymans 2019-11-19 17:25:34 +01:00 committed by Kyösti Mälkki
parent 0fd398a5a1
commit e8fd6e9c6f
7 changed files with 0 additions and 282 deletions
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26
src/southbridge/via/common/early_smbus_delay.c
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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011-2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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 <arch/io.h>
#include <device/early_smbus.h>
/**
* \brief Brief delay for SMBus transactions
*/
void smbus_delay(void)
{
inb(0x80);
}

31
src/southbridge/via/common/early_smbus_is_busy.c
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@ -1,31 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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 <arch/io.h>
#include <device/early_smbus.h>
#include "via_early_smbus.h"
/**
* \brief Checks if the SMBus is currently busy with a transaction
*
* @param smbus_dev The base SMBus IO port
*/
int smbus_is_busy(u32 smbus_dev)
{
/* Check if bit 0 of the status register is 1 (busy) or 0 (ready) */
return ((inb(SMBHSTSTAT(smbus_dev)) & (1 << 0)) == 1);
}

51
src/southbridge/via/common/early_smbus_print_error.c
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@ -1,51 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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 <device/early_smbus.h>
#include "via_early_smbus.h"
/**
* \brief Print an error, should it occur. If no error, just exit.
*
* @param smbus_dev The base SMBus IO port
* @param host_status The data returned on the host status register after
* a transaction is processed.
* @param loops The number of times a transaction was attempted.
* @return 0 if no error occurred
* 1 if an error was detected
*/
int smbus_print_error(u32 smbus_dev, u8 host_status, int loops)
{
/* Check if there actually was an error. */
if ((host_status == 0x00 || host_status == 0x40 ||
host_status == 0x42) && (loops < SMBUS_TIMEOUT))
return 0;
if (loops >= SMBUS_TIMEOUT)
printsmbus("SMBus timeout\n");
if (host_status & (1 << 4))
printsmbus("Interrupt/SMI# was Failed Bus Transaction\n");
if (host_status & (1 << 3))
printsmbus("Bus error\n");
if (host_status & (1 << 2))
printsmbus("Device error\n");
if (host_status & (1 << 1))
printsmbus("Interrupt/SMI# completed successfully\n");
if (host_status & (1 << 0))
printsmbus("Host busy\n");
return 1;
}

51
src/southbridge/via/common/early_smbus_read_byte.c
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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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 <arch/io.h>
#include <device/early_smbus.h>
#include "via_early_smbus.h"
/**
* \brief Read a byte from the SMBus.
*
* @param smbus_dev The base SMBus IO port
* @param addr The address location of the DIMM on the SMBus.
* @param offset The offset the data is located at.
*/
u8 smbus_read_byte(u32 smbus_dev, u8 addr, u8 offset)
{
u8 val;
/* Initialize SMBus sequence */
smbus_reset(smbus_dev);
/* Clear host data port. */
outb(0x00, SMBHSTDAT0(smbus_dev));
smbus_wait_until_ready(smbus_dev);
/* Actual addr to reg format. */
addr = (addr << 1);
addr |= 1; /* read command */
outb(addr, SMBXMITADD(smbus_dev));
outb(offset, SMBHSTCMD(smbus_dev));
/* Start transaction, byte data read. */
outb(0x48, SMBHSTCTL(smbus_dev));
smbus_wait_until_ready(smbus_dev);
val = inb(SMBHSTDAT0(smbus_dev));
return val;
}

30
src/southbridge/via/common/early_smbus_reset.c
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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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 <arch/io.h>
#include <device/early_smbus.h>
#include "via_early_smbus.h"
/**
* \brief Clear the SMBus host status register
*
* @param smbus_dev The base SMBus IO port
*/
void smbus_reset(u32 smbus_dev)
{
outb(0xdf, SMBHSTSTAT(smbus_dev));
}

42
src/southbridge/via/common/early_smbus_wait_until_ready.c
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@ -1,42 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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 <arch/io.h>
#include <device/early_smbus.h>
#include "via_early_smbus.h"
/**
* \brief Wait for the SMBus to become ready to process a new transaction.
*
* @param smbus_dev The base SMBus IO port
*/
int smbus_wait_until_ready(u32 smbus_dev)
{
int loops;
printsmbus("Waiting until SMBus ready\n");
/* Loop up to SMBUS_TIMEOUT times, waiting for bit 0 of the
* SMBus Host Status register to go to 0, indicating the operation
* was completed successfully. I don't remember why I did it this way,
* but I think it was because ROMCC was running low on registers */
loops = 0;
while (smbus_is_busy(smbus_dev) && loops < SMBUS_TIMEOUT)
++loops;
return smbus_print_error(smbus_dev, inb(SMBHSTSTAT(smbus_dev)), loops);
}

51
src/southbridge/via/common/via_early_smbus.h
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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
/**
* @file via_early_smbus.h
*
* This file contains generic definitions used in VIA SMBus controllers.
*
* Functions defined in device/early/smbus.h are each implemented in a separate
* early_smbus_[func_name].c file. This makes it possible to override any of
* these functions by not including them in your build, via Makefile.c. This is
* useful when there is a need to work around chipset bugs.
*
* These implementations work with most via chipsets. Any VIA port should try
* to use these. Makefile.inc needs to be adapted to link against the files
* providing SMBus functionality:
* @code
* romstage-y += ./../../../southbridge/via/common/early_smbus_func.c
* @endcode
*/
/**
* \brief SMBus IO ports in relation to the base IO port
*/
#define SMBHSTSTAT(base) ((u16)base + 0x0)
#define SMBSLVSTAT(base) ((u16)base + 0x1)
#define SMBHSTCTL(base) ((u16)base + 0x2)
#define SMBHSTCMD(base) ((u16)base + 0x3)
#define SMBXMITADD(base) ((u16)base + 0x4)
#define SMBHSTDAT0(base) ((u16)base + 0x5)
#define SMBHSTDAT1(base) ((u16)base + 0x6)
#define SMBBLKDAT(base) ((u16)base + 0x7)
#define SMBSLVCTL(base) ((u16)base + 0x8)
#define SMBTRNSADD(base) ((u16)base + 0x9)
#define SMBSLVDATA (base) ((u16)base + 0xa)
#define SMBUS_TIMEOUT (100*1000*10)