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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Advanced Micro Devices, 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 <stdint.h>
#include <device/pci_ids.h>
#include <arch/io.h> /* inl, outl */
#include "SBPLATFORM.h"
#include "sb_cimx.h"
#include "cfg.h" /*sb800_cimx_config*/
#include "cbmem.h"
/**
* @brief Get SouthBridge device number
* @param[in] bus target bus number
* @return southbridge device number
*/
u32 get_sbdn(u32 bus)
{
pci_devfn_t dev;
printk(BIOS_DEBUG, "SB800 - %s - %s - Start.\n", __FILE__, __func__);
//dev = PCI_DEV(bus, 0x14, 0);
dev = pci_locate_device_on_bus(
PCI_ID(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SB800_SM),
bus);
printk(BIOS_DEBUG, "SB800 - %s - %s - End.\n", __FILE__, __func__);
return (dev >> 15) & 0x1f;
}
/**
* @brief South Bridge CIMx romstage entry,
* wrapper of sbPowerOnInit entry point.
*/
void sb_Poweron_Init(void)
{
AMDSBCFG sb_early_cfg;
sb800_cimx_config(&sb_early_cfg);
//sb_early_cfg.StdHeader.Func = SB_POWERON_INIT;
//AmdSbDispatcher(&sb_early_cfg);
//TODO
//AMD_IMAGE_HEADER was missing, when using AmdSbDispatcher,
// VerifyImage() will fail, LocateImage() takes minutes to find the image.
sbPowerOnInit(&sb_early_cfg);
}
/**
* CIMX not set the clock to 48Mhz until sbBeforePciInit,
* coreboot may need to set this even more earlier
*/
void sb800_clk_output_48Mhz(void)
{
/* AcpiMMioDecodeEn */
RWPMIO(SB_PMIOA_REG24, AccWidthUint8, ~(BIT0 + BIT1), BIT0);
*(volatile u32 *)(ACPI_MMIO_BASE + MISC_BASE + 0x40) &= ~((1 << 0) | (1 << 2)); /* 48Mhz */
*(volatile u32 *)(ACPI_MMIO_BASE + MISC_BASE + 0x40) |= 1 << 1; /* 48Mhz */
}
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