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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 <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <device/smbus.h>
#include <pc80/mc146818rtc.h>
#include <lib.h>
#include <arch/io.h>
#include "amd8111.h"
#include "amd8111_smbus.h"
#define PREVIOUS_POWER_STATE 0x43
#define MAINBOARD_POWER_OFF 0
#define MAINBOARD_POWER_ON 1
#define SLOW_CPU_OFF 0
#define SLOW_CPU__ON 1
static int lsmbus_recv_byte(struct device *dev)
{
unsigned int device;
struct resource *res;
device = dev->path.i2c.device;
res = find_resource(get_pbus_smbus(dev)->dev, 0x58);
return do_smbus_recv_byte(res->base, device);
}
static int lsmbus_send_byte(struct device *dev, uint8_t val)
{
unsigned int device;
struct resource *res;
device = dev->path.i2c.device;
res = find_resource(get_pbus_smbus(dev)->dev, 0x58);
return do_smbus_send_byte(res->base, device, val);
}
static int lsmbus_read_byte(struct device *dev, uint8_t address)
{
unsigned int device;
struct resource *res;
device = dev->path.i2c.device;
res = find_resource(get_pbus_smbus(dev)->dev, 0x58);
return do_smbus_read_byte(res->base, device, address);
}
static int lsmbus_write_byte(struct device *dev, uint8_t address, uint8_t val)
{
unsigned int device;
struct resource *res;
device = dev->path.i2c.device;
res = find_resource(get_pbus_smbus(dev)->dev, 0x58);
return do_smbus_write_byte(res->base, device, address, val);
}
static int lsmbus_block_read(struct device *dev, uint8_t cmd, u8 bytes,
u8 *buffer)
{
unsigned int device;
struct resource *res;
device = dev->path.i2c.device;
res = find_resource(get_pbus_smbus(dev)->dev, 0x58);
return do_smbus_block_read(res->base, device, cmd, bytes, buffer);
}
static int lsmbus_block_write(struct device *dev, uint8_t cmd, u8 bytes,
const u8 *buffer)
{
unsigned int device;
struct resource *res;
device = dev->path.i2c.device;
res = find_resource(get_pbus_smbus(dev)->dev, 0x58);
return do_smbus_block_write(res->base, device, cmd, bytes, buffer);
}
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
unsigned pm_base;
#endif
static void acpi_init(struct device *dev)
{
uint8_t byte;
uint16_t pm10_bar;
int on;
#if 0
uint16_t word;
printk(BIOS_DEBUG, "ACPI: disabling NMI watchdog.. ");
byte = pci_read_config8(dev, 0x49);
pci_write_config8(dev, 0x49, byte | (1<<2));
byte = pci_read_config8(dev, 0x41);
pci_write_config8(dev, 0x41, byte | (1<<6)|(1<<2));
/* added from sourceforge */
byte = pci_read_config8(dev, 0x48);
pci_write_config8(dev, 0x48, byte | (1<<3));
printk(BIOS_DEBUG, "done.\n");
printk(BIOS_DEBUG, "ACPI: Routing IRQ 12 to PS2 port.. ");
word = pci_read_config16(dev, 0x46);
pci_write_config16(dev, 0x46, word | (1<<9));
printk(BIOS_DEBUG, "done.\n");
#endif
/* To enable the register 0xcf9 in the IO space
* bit [D5] is set in the amd8111 configuration register.
* The config. reg. is devBx41. Register 0xcf9 allows
* hard reset capability to the system. For the ACPI
* reset.reg values in fadt.c to work this register
* must be enabled.
*/
byte = pci_read_config8(dev, 0x41);
pci_write_config8(dev, 0x41, byte | (1<<6)|(1<<5));
/* power on after power fail */
on = CONFIG_MAINBOARD_POWER_FAILURE_STATE;
get_option(&on, "power_on_after_fail");
byte = pci_read_config8(dev, PREVIOUS_POWER_STATE);
byte &= ~0x40;
if (!on) {
byte |= 0x40;
}
pci_write_config8(dev, PREVIOUS_POWER_STATE, byte);
printk(BIOS_INFO, "set power %s after power fail\n", on?"on":"off");
/* switch serial irq logic from quiet mode to continuous
* mode for Winbond W83627HF Rev. 17
*/
byte = pci_read_config8(dev, 0x4a);
pci_write_config8(dev, 0x4a, byte | (1<<6));
/* Throttle the CPU speed down for testing */
on = SLOW_CPU_OFF;
get_option(&on, "slow_cpu");
if (on) {
pm10_bar = (pci_read_config16(dev, 0x58) & 0xff00);
outl(((on << 1) + 0x10), (pm10_bar + 0x10));
inl(pm10_bar + 0x10);
on = 8-on;
printk(BIOS_DEBUG, "Throttling CPU %2d.%1.1d percent.\n",
(on * 12) + (on >> 1), (on & 1) * 5);
}
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
pm_base = pci_read_config16(dev, 0x58) & 0xff00;
printk(BIOS_DEBUG, "pm_base: 0x%04x\n", pm_base);
#endif
}
static void acpi_read_resources(struct device *dev)
{
struct resource *resource;
/* Handle the generic bars */
pci_dev_read_resources(dev);
/* Add the ACPI/SMBUS bar */
resource = new_resource(dev, 0x58);
resource->base = 0;
resource->size = 256;
resource->align = log2(256);
resource->gran = log2(256);
resource->limit = 65536;
resource->flags = IORESOURCE_IO;
resource->index = 0x58;
}
static void acpi_enable_resources(struct device *dev)
{
uint8_t byte;
/* Enable the generic pci resources */
pci_dev_enable_resources(dev);
/* Enable the ACPI/SMBUS Bar */
byte = pci_read_config8(dev, 0x41);
byte |= (1 << 7);
pci_write_config8(dev, 0x41, byte);
/* Set the class code */
pci_write_config32(dev, 0x60, 0x06800000);
}
static void lpci_set_subsystem(struct device *dev, unsigned int vendor,
unsigned int device)
{
pci_write_config32(dev, 0x7c,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct smbus_bus_operations lops_smbus_bus = {
.recv_byte = lsmbus_recv_byte,
.send_byte = lsmbus_send_byte,
.read_byte = lsmbus_read_byte,
.write_byte = lsmbus_write_byte,
.block_read = lsmbus_block_read,
.block_write= lsmbus_block_write,
};
static struct pci_operations lops_pci = {
.set_subsystem = lpci_set_subsystem,
};
static struct device_operations acpi_ops = {
.read_resources = acpi_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = acpi_enable_resources,
.init = acpi_init,
.scan_bus = scan_smbus,
/* We don't need amd8111_enable, chip ops takes care of it.
* It could be useful if these devices were not
* enabled by default.
*/
// .enable = amd8111_enable,
.ops_pci = &lops_pci,
.ops_smbus_bus = &lops_smbus_bus,
};
static const struct pci_driver acpi_driver __pci_driver = {
.ops = &acpi_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_8111_ACPI,
};
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