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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015-2016 Intel Corp.
* Copyright (C) 2017 Siemens AG
*
* 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 <stddef.h>
#include <device/pci_ops.h>
#include <arch/cbfs.h>
#include <cbmem.h>
#include <console/console.h>
#include <console/usb.h>
#include <cpu/x86/mtrr.h>
#include <cpu/x86/smm.h>
#include <program_loading.h>
#include <timestamp.h>
#include <version.h>
#include <drivers/intel/fsp1_0/fsp_util.h>
#include <pc80/mc146818rtc.h>
#include <soc/iomap.h>
#include <soc/lpc.h>
#include <soc/memory.h>
#include <soc/pci_devs.h>
#include <soc/romstage.h>
#include <soc/gpio.h>
#include <soc/vtd.h>
#include <soc/ubox.h>
#include <build.h>
static void init_rtc(void)
{
u16 gen_pmcon3 = pci_read_config16(PCI_DEV(0, LPC_DEV, LPC_FUNC), GEN_PMCON_3);
if (gen_pmcon3 & RTC_PWR_STS) {
printk(BIOS_DEBUG, "RTC Failure detected. Resetting Date to %s\n",
coreboot_dmi_date);
}
cmos_init(gen_pmcon3 & RTC_PWR_STS);
}
/* Set up IO address range and enable it for the GPIO block. */
static void setup_gpio_io_address(void)
{
pci_write_config32(PCI_DEV(0, LPC_DEV, LPC_FUNC), GPIO_BASE_ADR_OFFSET,
GPIO_BASE_ADDRESS);
pci_write_config8(PCI_DEV(0, LPC_DEV, LPC_FUNC), GPIO_CTRL_OFFSET,
GPIO_DECODE_ENABLE);
}
static void enable_integrated_uart(uint8_t port)
{
uint32_t reg32, busno1 = 0, ubox_uart_en = 0, dfx1 = 0;
pci_devfn_t vtd_dev, ubox_dev;
vtd_dev = PCI_DEV(BUS0, VTD_DEV, VTD_FUNC);
/* Figure out what bus number is assigned for CPUBUSNO(1) */
reg32 = pci_mmio_read_config32(vtd_dev, VTD_CPUBUSNO);
busno1 = (reg32 >> VTD_CPUBUSNO_BUS1_SHIFT) & VTD_CPUBUSNO_BUS1_MASK;
/* UBOX sits on CPUBUSNO(1) */
ubox_dev = PCI_DEV(busno1, UBOX_DEV, UBOX_FUNC);
uint32_t reset_sts = pci_mmio_read_config32(ubox_dev, UBOX_SC_RESET_STATUS);
/* In case we are in bypass mode do nothing */
if (reset_sts & UBOX_SC_BYPASS)
return;
dfx1 = pci_mmio_read_config32(vtd_dev, VTD_DFX1);
ubox_uart_en = pci_mmio_read_config32(ubox_dev, UBOX_UART_ENABLE);
switch (port) {
case 0:
ubox_uart_en |= UBOX_UART_ENABLE_PORT0;
dfx1 |= VTD_DFX1_RANGE_3F8_DISABLE;
break;
case 1:
ubox_uart_en |= UBOX_UART_ENABLE_PORT1;
dfx1 |= VTD_DFX1_RANGE_2F8_DISABLE;
break;
default:
printk(BIOS_ERR, "incorrect port number\n");
return;
}
/* Disable decoding and enable the port we want */
pci_mmio_write_config32(vtd_dev, VTD_DFX1, dfx1);
pci_mmio_write_config32(ubox_dev, UBOX_UART_ENABLE, ubox_uart_en);
}
/* Entry from cache-as-ram.inc. */
void *asmlinkage main(FSP_INFO_HEADER *fsp_info_header)
{
post_code(0x40);
if (!CONFIG(INTEGRATED_UART)) {
/* Enable decoding of I/O locations for Super I/O devices */
pci_write_config16(PCI_DEV(0x0, LPC_DEV, LPC_FUNC),
LPC_IO_DEC, 0x0010);
pci_write_config16(PCI_DEV(0x0, LPC_DEV, LPC_FUNC),
LPC_EN, 0x340f);
} else {
enable_integrated_uart(CONFIG_UART_FOR_CONSOLE);
}
/* Call into mainboard. */
post_code(0x41);
early_mainboard_romstage_entry();
post_code(0x42);
console_init();
init_rtc();
setup_gpio_io_address();
/*
* Call early init to initialize memory and chipset. This function returns
* to the romstage_main_continue function with a pointer to the HOB
* structure.
*/
post_code(0x48);
printk(BIOS_DEBUG, "Starting the Intel FSP (early_init)\n");
fsp_early_init(fsp_info_header);
die_with_post_code(POST_INVALID_VENDOR_BINARY,
"Uh Oh! fsp_early_init should not return here.\n");
}
/*******************************************************************************
* The FSP early_init function returns to this function.
* Memory is set up and the stack is set by the FSP.
*/
void romstage_main_continue(EFI_STATUS status, void *hob_list_ptr)
{
void *cbmem_hob_ptr;
post_code(0x4a);
timestamp_init(get_initial_timestamp());
timestamp_add_now(TS_AFTER_INITRAM);
printk(BIOS_DEBUG, "%s status: %x hob_list_ptr: %x\n",
__func__, (u32) status, (u32) hob_list_ptr);
/* FSP reconfigures USB, so reinit it to have debug */
if (CONFIG(USBDEBUG_IN_PRE_RAM))
usbdebug_hw_init(true);
printk(BIOS_DEBUG, "FSP Status: 0x%0x\n", (u32)status);
post_code(0x4b);
late_mainboard_romstage_entry();
post_code(0x4d);
cbmem_recovery(0);
/* Save the HOB pointer in CBMEM to be used in ramstage*/
cbmem_hob_ptr = cbmem_add(CBMEM_ID_HOB_POINTER, sizeof(*hob_list_ptr));
if (cbmem_hob_ptr == NULL)
die("Could not allocate cbmem for HOB pointer");
*(u32 *)cbmem_hob_ptr = (u32)hob_list_ptr;
if (!CONFIG(FSP_MEMORY_DOWN))
save_dimm_info();
if (CONFIG(SMM_TSEG))
smm_list_regions();
/* Load the ramstage. */
post_code(0x4e);
run_ramstage();
while (1);
}
uint64_t get_initial_timestamp(void)
{
return 0;
}
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