| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2018 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 <bootstate.h> |
| #include <console/console.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <gpio.h> |
| #include <hwilib.h> |
| #include <intelblocks/lpc_lib.h> |
| #include <intelblocks/pcr.h> |
| #include <soc/pcr_ids.h> |
| #include <timer.h> |
| #include <timestamp.h> |
| #include <baseboard/variants.h> |
| |
| #define TX_DWORD3 0xa8c |
| |
| void variant_mainboard_final(void) |
| { |
| struct device *dev = NULL; |
| |
| /* |
| * PIR6 register mapping for PCIe root ports |
| * INTA#->PIRQB#, INTB#->PIRQC#, INTC#->PIRQD#, INTD#-> PIRQA# |
| */ |
| pcr_write16(PID_ITSS, 0x314c, 0x0321); |
| |
| /* Disable clock outputs 1-5 (CLKOUT) for XIO2001 PCIe to PCI Bridge. */ |
| dev = dev_find_device(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2001, 0); |
| if (dev) |
| pci_write_config8(dev, 0xd8, 0x3e); |
| |
| /* Enable CLKRUN_EN for power gating LPC */ |
| lpc_enable_pci_clk_cntl(); |
| |
| /* |
| * Enable LPC PCE (Power Control Enable) by setting IOSF-SB port 0xD2 |
| * offset 0x341D bit3 and bit0. |
| * Enable LPC CCE (Clock Control Enable) by setting IOSF-SB port 0xD2 |
| * offset 0x341C bit [3:0]. |
| */ |
| pcr_or32(PID_LPC, PCR_LPC_PRC, (PCR_LPC_CCE_EN | PCR_LPC_PCE_EN)); |
| |
| /* |
| * Correct the SATA transmit signal via the High Speed I/O Transmit |
| * Control Register 3. |
| * Bit [23:16] set the output voltage swing for TX line. |
| * The value 0x4a sets the swing level to 0.58 V. |
| */ |
| pcr_rmw32(PID_MODPHY, TX_DWORD3, (0x00 << 16), (0x4a << 16)); |
| } |
| |
| static void wait_for_legacy_dev(void *unused) |
| { |
| uint32_t legacy_delay, us_since_boot; |
| struct stopwatch sw; |
| |
| /* Open main hwinfo block. */ |
| if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) |
| return; |
| |
| /* Get legacy delay parameter from hwinfo. */ |
| if (hwilib_get_field(LegacyDelay, (uint8_t *) &legacy_delay, |
| sizeof(legacy_delay)) != sizeof(legacy_delay)) |
| return; |
| |
| us_since_boot = get_us_since_boot(); |
| /* No need to wait if the time since boot is already long enough.*/ |
| if (us_since_boot > legacy_delay) |
| return; |
| stopwatch_init_msecs_expire(&sw, (legacy_delay - us_since_boot) / 1000); |
| printk(BIOS_NOTICE, "Wait remaining %d of %d us for legacy devices...", |
| legacy_delay - us_since_boot, legacy_delay); |
| stopwatch_wait_until_expired(&sw); |
| printk(BIOS_NOTICE, "done!\n"); |
| } |
| |
| static void finalize_boot(void *unused) |
| { |
| /* Set coreboot ready LED. */ |
| gpio_output(CNV_RGI_DT, 1); |
| } |
| |
| BOOT_STATE_INIT_ENTRY(BS_DEV_ENUMERATE, BS_ON_ENTRY, wait_for_legacy_dev, NULL); |
| BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_BOOT, BS_ON_ENTRY, finalize_boot, NULL); |