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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Intel Corporation.
*
* 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 <device/device.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <intelblocks/lpss.h>
#include <intelblocks/uart.h>
void uart_common_init(device_t dev, uintptr_t baseaddr, uint32_t clk_m_val,
uint32_t clk_n_val)
{
/* Set UART base address */
pci_write_config32(dev, PCI_BASE_ADDRESS_0, baseaddr);
/* Enable memory access and bus master */
pci_write_config32(dev, PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
/* Take UART out of reset */
lpss_reset_release(baseaddr);
/* Set M and N divisor inputs and enable clock */
lpss_clk_update(baseaddr, clk_m_val, clk_n_val);
}
#if ENV_RAMSTAGE
__attribute__((weak)) void pch_uart_read_resources(struct device *dev)
{
pci_dev_read_resources(dev);
}
static struct device_operations device_ops = {
.read_resources = &pch_uart_read_resources,
.set_resources = &pci_dev_set_resources,
.enable_resources = &pci_dev_enable_resources,
};
static const unsigned short pci_device_ids[] = {
PCI_DEVICE_ID_INTEL_SPT_UART0,
PCI_DEVICE_ID_INTEL_SPT_UART1,
PCI_DEVICE_ID_INTEL_SPT_UART2,
PCI_DEVICE_ID_INTEL_KBP_H_UART0,
PCI_DEVICE_ID_INTEL_KBP_H_UART1,
PCI_DEVICE_ID_INTEL_KBP_H_UART2,
PCI_DEVICE_ID_INTEL_APL_UART0,
PCI_DEVICE_ID_INTEL_APL_UART1,
PCI_DEVICE_ID_INTEL_APL_UART2,
PCI_DEVICE_ID_INTEL_APL_UART3,
PCI_DEVICE_ID_INTEL_GLK_UART0,
PCI_DEVICE_ID_INTEL_GLK_UART1,
PCI_DEVICE_ID_INTEL_GLK_UART2,
PCI_DEVICE_ID_INTEL_GLK_UART3,
0,
};
static const struct pci_driver pch_uart __pci_driver = {
.ops = &device_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
#endif /* ENV_RAMSTAGE */
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