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/*
* This file is part of the coreboot project.
*
* 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 <arch/io.h>
#include <stdint.h>
#include <cpu/x86/lapic.h>
#include "amdk8.h"
static inline int cpu_init_detected(unsigned nodeid)
{
u32 htic;
pci_devfn_t dev;
dev = PCI_DEV(0, 0x18 + nodeid, 0);
htic = pci_io_read_config32(dev, HT_INIT_CONTROL);
return !!(htic & HTIC_INIT_Detect);
}
static inline int bios_reset_detected(void)
{
u32 htic;
htic = pci_io_read_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL);
return (htic & HTIC_ColdR_Detect) && !(htic & HTIC_BIOSR_Detect);
}
static inline int cold_reset_detected(void)
{
u32 htic;
htic = pci_io_read_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL);
return !(htic & HTIC_ColdR_Detect);
}
void distinguish_cpu_resets(unsigned int nodeid)
{
u32 htic;
pci_devfn_t device;
device = PCI_DEV(0, 0x18 + nodeid, 0);
htic = pci_io_read_config32(device, HT_INIT_CONTROL);
htic |= HTIC_ColdR_Detect | HTIC_BIOSR_Detect | HTIC_INIT_Detect;
pci_io_write_config32(device, HT_INIT_CONTROL, htic);
}
void set_bios_reset(void)
{
u32 htic;
htic = pci_io_read_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL);
htic &= ~HTIC_BIOSR_Detect;
pci_io_write_config32(PCI_DEV(0, 0x18, 0), HT_INIT_CONTROL, htic);
}
static unsigned node_link_to_bus(unsigned node, unsigned link)
{
u8 reg;
for (reg = 0xE0; reg < 0xF0; reg += 0x04) {
u32 config_map;
config_map = pci_io_read_config32(PCI_DEV(0, 0x18, 1), reg);
if ((config_map & 3) != 3) {
continue;
}
if ((((config_map >> 4) & 7) == node) &&
(((config_map >> 8) & 3) == link))
{
return (config_map >> 16) & 0xff;
}
}
return 0;
}
unsigned int get_sblk(void)
{
u32 reg;
/* read PCI_DEV(0,0x18,0) 0x64 bit [8:9] to find out SbLink m */
reg = pci_io_read_config32(PCI_DEV(0, 0x18, 0), 0x64);
return ((reg>>8) & 3);
}
unsigned int get_sbbusn(unsigned sblk)
{
return node_link_to_bus(0, sblk);
}
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