lib/spd_bin,soc/intel/common: Move get_spd_smbus()
Only smbuslib.c and spd_bin.c share the same prototypes for SMBUS functions. Therefore, get_spd_smbus() currently only works with soc/intel/.../smbuslib.c and can be implemented there locally. This allows removal of <device/early_smbus.h>. Change-Id: Ic2d9d83ede6388a01d40c6e4768f6bb6bf899c00 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38121 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Kyösti Mälkki
parent
4ae9f1e5d8
commit
756646757e
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@ -1,56 +0,0 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2011 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/**
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* @file device/early_smbus.h
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*
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* This file defines a common API for accessing the SMBus during early
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* initialization. It defines the prototypes for common SMBus functions. The
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* actual implementations are hardware-dependent.
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*
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* The first parameter of all SMBus functions take a u32 value smbus_dev which
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* represents some information on how to access the device, and is
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* implementation defined. Usually, it just contains the IO base for the smbus.
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* To get this argument @ref smbus_get_device() can be used.
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*
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* The header only defines the prototypes. Several steps are needed to use
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* these:
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*
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* 1. Include this header
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* @code{.c}
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* #include <device/early_smbus.h>
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* @endcode
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*
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* 2. Implement early_smbus.c for the hardware, or find a compatible
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* implementation.
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*
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* 3. Link against the file that implements these functions. In the Makefile.inc
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* of the chipset, add:
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* @code
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* romstage-y += ./path/to/early_smbus.c
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* @endcode
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*/
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#ifndef DEVICE_EARLY_SMBUS_H
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#define DEVICE_EARLY_SMBUS_H
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#include <stdint.h>
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u16 smbus_read_word(u8 addr, u8 offset);
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u8 smbus_read_byte(u8 addr, u8 offset);
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u8 smbus_write_byte(u8 addr, u8 offset, u8 value);
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#endif /* DEVICE_EARLY_SMBUS_H */
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@ -17,11 +17,8 @@
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#include <console/console.h>
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#include <spd_bin.h>
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#include <string.h>
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#include <device/early_smbus.h>
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#include <device/dram/ddr3.h>
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static u8 spd_data[CONFIG_DIMM_MAX * CONFIG_DIMM_SPD_SIZE];
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void dump_spd_info(struct spd_block *blk)
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{
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u8 i;
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@ -189,20 +186,6 @@ void print_spd_info(uint8_t spd[])
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}
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}
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static void update_spd_len(struct spd_block *blk)
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{
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u8 i, j = 0;
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for (i = 0 ; i < CONFIG_DIMM_MAX; i++)
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if (blk->spd_array[i] != NULL)
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j |= blk->spd_array[i][SPD_DRAM_TYPE];
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/* If spd used is DDR4, then its length is 512 byte. */
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if (j == SPD_DRAM_DDR4)
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blk->len = SPD_PAGE_LEN_DDR4;
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else
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blk->len = SPD_PAGE_LEN;
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}
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int get_spd_cbfs_rdev(struct region_device *spd_rdev, u8 spd_index)
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{
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struct cbfsf fh;
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@ -216,57 +199,6 @@ int get_spd_cbfs_rdev(struct region_device *spd_rdev, u8 spd_index)
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CONFIG_DIMM_SPD_SIZE);
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}
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static void smbus_read_spd(u8 *spd, u8 addr)
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{
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u16 i;
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u8 step = 1;
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if (CONFIG(SPD_READ_BY_WORD))
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step = sizeof(uint16_t);
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for (i = 0; i < SPD_PAGE_LEN; i += step) {
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if (CONFIG(SPD_READ_BY_WORD))
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((u16*)spd)[i / sizeof(uint16_t)] =
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smbus_read_word(addr, i);
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else
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spd[i] = smbus_read_byte(addr, i);
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}
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}
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static void get_spd(u8 *spd, u8 addr)
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{
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if (smbus_read_byte(addr, 0) == 0xff) {
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printk(BIOS_INFO, "No memory dimm at address %02X\n",
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addr << 1);
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/* Make sure spd is zeroed if dimm doesn't exist. */
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memset(spd, 0, CONFIG_DIMM_SPD_SIZE);
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return;
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}
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smbus_read_spd(spd, addr);
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/* Check if module is DDR4, DDR4 spd is 512 byte. */
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if (spd[SPD_DRAM_TYPE] == SPD_DRAM_DDR4 &&
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CONFIG_DIMM_SPD_SIZE > SPD_PAGE_LEN) {
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/* Switch to page 1 */
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smbus_write_byte(SPD_PAGE_1, 0, 0);
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smbus_read_spd(spd + SPD_PAGE_LEN, addr);
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/* Restore to page 0 */
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smbus_write_byte(SPD_PAGE_0, 0, 0);
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}
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}
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void get_spd_smbus(struct spd_block *blk)
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{
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u8 i;
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for (i = 0 ; i < CONFIG_DIMM_MAX; i++) {
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get_spd(&spd_data[i * CONFIG_DIMM_SPD_SIZE],
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blk->addr_map[i]);
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blk->spd_array[i] = &spd_data[i * CONFIG_DIMM_SPD_SIZE];
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}
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update_spd_len(blk);
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}
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#if CONFIG_DIMM_SPD_SIZE == 128
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int read_ddr3_spd_from_cbfs(u8 *buf, int idx)
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{
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@ -14,8 +14,10 @@
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*/
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#include <arch/io.h>
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#include <device/early_smbus.h>
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#include <console/console.h>
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#include <device/smbus_def.h>
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#include <spd_bin.h>
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#include <string.h>
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#include <timer.h>
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#include "smbuslib.h"
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@ -176,17 +178,84 @@ int do_smbus_read_word(unsigned int smbus_base, u8 device, unsigned int address)
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return data;
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}
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u16 smbus_read_word(u8 addr, u8 offset)
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static u16 smbus_read_word(u8 addr, u8 offset)
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{
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return do_smbus_read_word(SMBUS_IO_BASE, addr, offset);
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}
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u8 smbus_read_byte(u8 addr, u8 offset)
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static u8 smbus_read_byte(u8 addr, u8 offset)
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{
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return do_smbus_read_byte(SMBUS_IO_BASE, addr, offset);
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}
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u8 smbus_write_byte(u8 addr, u8 offset, u8 value)
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static u8 smbus_write_byte(u8 addr, u8 offset, u8 value)
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{
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return do_smbus_write_byte(SMBUS_IO_BASE, addr, offset, value);
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}
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static void update_spd_len(struct spd_block *blk)
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{
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u8 i, j = 0;
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for (i = 0 ; i < CONFIG_DIMM_MAX; i++)
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if (blk->spd_array[i] != NULL)
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j |= blk->spd_array[i][SPD_DRAM_TYPE];
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/* If spd used is DDR4, then its length is 512 byte. */
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if (j == SPD_DRAM_DDR4)
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blk->len = SPD_PAGE_LEN_DDR4;
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else
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blk->len = SPD_PAGE_LEN;
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}
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static void smbus_read_spd(u8 *spd, u8 addr)
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{
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u16 i;
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u8 step = 1;
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if (CONFIG(SPD_READ_BY_WORD))
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step = sizeof(uint16_t);
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for (i = 0; i < SPD_PAGE_LEN; i += step) {
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if (CONFIG(SPD_READ_BY_WORD))
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((u16*)spd)[i / sizeof(uint16_t)] =
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smbus_read_word(addr, i);
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else
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spd[i] = smbus_read_byte(addr, i);
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}
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}
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static void get_spd(u8 *spd, u8 addr)
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{
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if (smbus_read_byte(addr, 0) == 0xff) {
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printk(BIOS_INFO, "No memory dimm at address %02X\n",
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addr << 1);
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/* Make sure spd is zeroed if dimm doesn't exist. */
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memset(spd, 0, CONFIG_DIMM_SPD_SIZE);
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return;
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}
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smbus_read_spd(spd, addr);
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/* Check if module is DDR4, DDR4 spd is 512 byte. */
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if (spd[SPD_DRAM_TYPE] == SPD_DRAM_DDR4 &&
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CONFIG_DIMM_SPD_SIZE > SPD_PAGE_LEN) {
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/* Switch to page 1 */
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smbus_write_byte(SPD_PAGE_1, 0, 0);
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smbus_read_spd(spd + SPD_PAGE_LEN, addr);
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/* Restore to page 0 */
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smbus_write_byte(SPD_PAGE_0, 0, 0);
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}
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}
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static u8 spd_data[CONFIG_DIMM_MAX * CONFIG_DIMM_SPD_SIZE];
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void get_spd_smbus(struct spd_block *blk)
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{
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u8 i;
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for (i = 0 ; i < CONFIG_DIMM_MAX; i++) {
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get_spd(&spd_data[i * CONFIG_DIMM_SPD_SIZE],
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blk->addr_map[i]);
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blk->spd_array[i] = &spd_data[i * CONFIG_DIMM_SPD_SIZE];
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}
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update_spd_len(blk);
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}
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