diff options
Diffstat (limited to 'src/soc/intel/skylake/serialio.c')
-rw-r--r-- | src/soc/intel/skylake/serialio.c | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/src/soc/intel/skylake/serialio.c b/src/soc/intel/skylake/serialio.c deleted file mode 100644 index 6eba7ac020..0000000000 --- a/src/soc/intel/skylake/serialio.c +++ /dev/null @@ -1,318 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Google Inc. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <arch/io.h> -#include <cbmem.h> -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pciexp.h> -#include <device/pci_ids.h> -#include <stdlib.h> -#include <soc/iobp.h> -#include <soc/nvs.h> -#include <soc/pci_devs.h> -#include <soc/pch.h> -#include <soc/ramstage.h> -#include <soc/rcba.h> -#include <soc/serialio.h> -#include <soc/intel/broadwell/chip.h> - -/* Set D3Hot Power State in ACPI mode */ -static void serialio_enable_d3hot(struct resource *res) -{ - u32 reg32 = read32(res2mmio(res, PCH_PCS, 0)); - reg32 |= PCH_PCS_PS_D3HOT; - write32(res2mmio(res, PCH_PCS, 0), reg32); -} - -static int serialio_uart_is_debug(struct device *dev) -{ -#if CONFIG_INTEL_PCH_UART_CONSOLE - switch (dev->path.pci.devfn) { - case PCH_DEVFN_UART0: /* UART0 */ - return !!(CONFIG_INTEL_PCH_UART_CONSOLE_NUMBER == 0); - case PCH_DEVFN_UART1: /* UART1 */ - return !!(CONFIG_INTEL_PCH_UART_CONSOLE_NUMBER == 1); - } -#endif - return 0; -} - -/* Enable clock in PCI mode */ -static void serialio_enable_clock(struct resource *bar0) -{ - u32 reg32 = read32(res2mmio(bar0, SIO_REG_PPR_CLOCK, 0)); - reg32 |= SIO_REG_PPR_CLOCK_EN; - write32(res2mmio(bar0, SIO_REG_PPR_CLOCK, 0), reg32); -} - -/* Put Serial IO D21:F0-F6 device into desired mode. */ -static void serialio_d21_mode(int sio_index, int int_pin, int acpi_mode) -{ - u32 portctrl = SIO_IOBP_PORTCTRL_PM_CAP_PRSNT; - - /* Snoop select 1. */ - portctrl |= SIO_IOBP_PORTCTRL_SNOOP_SELECT(1); - - /* Set interrupt pin. */ - portctrl |= SIO_IOBP_PORTCTRL_INT_PIN(int_pin); - - if (acpi_mode) { - /* Enable ACPI interrupt mode. */ - portctrl |= SIO_IOBP_PORTCTRL_ACPI_IRQ_EN; - - /* Disable PCI config space. */ - portctrl |= SIO_IOBP_PORTCTRL_PCI_CONF_DIS; - } - - pch_iobp_update(SIO_IOBP_PORTCTRLX(sio_index), 0, portctrl); -} - -/* Put Serial IO D23:F0 device into desired mode. */ -static void serialio_d23_mode(int acpi_mode) -{ - u32 portctrl = 0; - - /* Snoop select 1. */ - pch_iobp_update(SIO_IOBP_PORTCTRL1, 0, - SIO_IOBP_PORTCTRL1_SNOOP_SELECT(1)); - - if (acpi_mode) { - /* Enable ACPI interrupt mode. */ - portctrl |= SIO_IOBP_PORTCTRL0_ACPI_IRQ_EN; - - /* Disable PCI config space. */ - portctrl |= SIO_IOBP_PORTCTRL0_PCI_CONF_DIS; - } - - pch_iobp_update(SIO_IOBP_PORTCTRL0, 0, portctrl); -} - -/* Enable LTR Auto Mode for D21:F1-F6. */ -static void serialio_d21_ltr(struct resource *bar0) -{ - u32 reg; - - /* 1. Program BAR0 + 808h[2] = 0b */ - reg = read32(res2mmio(bar0, SIO_REG_PPR_GEN, 0)); - reg &= ~SIO_REG_PPR_GEN_LTR_MODE_MASK; - write32(res2mmio(bar0, SIO_REG_PPR_GEN, 0), reg); - - /* 2. Program BAR0 + 804h[1:0] = 00b */ - reg = read32(res2mmio(bar0, SIO_REG_PPR_RST, 0)); - reg &= ~SIO_REG_PPR_RST_ASSERT; - write32(res2mmio(bar0, SIO_REG_PPR_RST, 0), reg); - - /* 3. Program BAR0 + 804h[1:0] = 11b */ - reg = read32(res2mmio(bar0, SIO_REG_PPR_RST, 0)); - reg |= SIO_REG_PPR_RST_ASSERT; - write32(res2mmio(bar0, SIO_REG_PPR_RST, 0), reg); - - /* 4. Program BAR0 + 814h[31:0] = 00000000h */ - write32(res2mmio(bar0, SIO_REG_AUTO_LTR, 0), 0); -} - -/* Enable LTR Auto Mode for D23:F0. */ -static void serialio_d23_ltr(struct resource *bar0) -{ - u32 reg; - - /* Program BAR0 + 1008h[2] = 1b */ - reg = read32(res2mmio(bar0, SIO_REG_SDIO_PPR_GEN, 0)); - reg |= SIO_REG_PPR_GEN_LTR_MODE_MASK; - write32(res2mmio(bar0, SIO_REG_SDIO_PPR_GEN, 0), reg); - - /* Program BAR0 + 1010h = 0x00000000 */ - write32(res2mmio(bar0, SIO_REG_SDIO_PPR_SW_LTR, 0), 0); - - /* Program BAR0 + 3Ch[30] = 1b */ - reg = read32(res2mmio(bar0, SIO_REG_SDIO_PPR_CMD12, 0)); - reg |= SIO_REG_SDIO_PPR_CMD12_B30; - write32(res2mmio(bar0, SIO_REG_SDIO_PPR_CMD12, 0), reg); -} - -/* Select I2C voltage of 1.8V or 3.3V. */ -static void serialio_i2c_voltage_sel(struct resource *bar0, u8 voltage) -{ - u32 reg32 = read32(res2mmio(bar0, SIO_REG_PPR_GEN, 0)); - reg32 &= ~SIO_REG_PPR_GEN_VOLTAGE_MASK; - reg32 |= SIO_REG_PPR_GEN_VOLTAGE(voltage); - write32(res2mmio(bar0, SIO_REG_PPR_GEN, 0), reg32); -} - -/* Init sequence to be run once, done as part of D21:F0 (SDMA) init. */ -static void serialio_init_once(int acpi_mode) -{ - if (acpi_mode) { - /* Enable ACPI IRQ for IRQ13, IRQ7, IRQ6, IRQ5 in RCBA. */ - RCBA32_OR(ACPIIRQEN, (1 << 13)|(1 << 7)|(1 << 6)|(1 << 5)); - } - - /* Program IOBP CB000154h[12,9:8,4:0] = 1001100011111b. */ - pch_iobp_update(SIO_IOBP_GPIODF, ~0x0000131f, 0x0000131f); - - /* Program IOBP CB000180h[5:0] = 111111b (undefined register) */ - pch_iobp_update(0xcb000180, ~0x0000003f, 0x0000003f); -} - -static void serialio_init(struct device *dev) -{ - config_t *config = dev->chip_info; - struct resource *bar0, *bar1; - int sio_index = -1; - u32 reg32; - - printk(BIOS_DEBUG, "Initializing Serial IO device\n"); - - /* Ensure memory and bus master are enabled */ - reg32 = pci_read_config32(dev, PCI_COMMAND); - reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_write_config32(dev, PCI_COMMAND, reg32); - - /* Find BAR0 and BAR1 */ - bar0 = find_resource(dev, PCI_BASE_ADDRESS_0); - if (!bar0) - return; - bar1 = find_resource(dev, PCI_BASE_ADDRESS_1); - if (!bar1) - return; - - if (!config->sio_acpi_mode) - serialio_enable_clock(bar0); - - switch (dev->path.pci.devfn) { - case PCH_DEVFN_SDMA: /* SDMA */ - sio_index = SIO_ID_SDMA; - serialio_init_once(config->sio_acpi_mode); - serialio_d21_mode(sio_index, SIO_PIN_INTB, - config->sio_acpi_mode); - break; - case PCH_DEVFN_I2C0: /* I2C0 */ - sio_index = SIO_ID_I2C0; - serialio_d21_ltr(bar0); - serialio_i2c_voltage_sel(bar0, config->sio_i2c0_voltage); - serialio_d21_mode(sio_index, SIO_PIN_INTC, - config->sio_acpi_mode); - break; - case PCH_DEVFN_I2C1: /* I2C1 */ - sio_index = SIO_ID_I2C1; - serialio_d21_ltr(bar0); - serialio_i2c_voltage_sel(bar0, config->sio_i2c1_voltage); - serialio_d21_mode(sio_index, SIO_PIN_INTC, - config->sio_acpi_mode); - break; - case PCH_DEVFN_SPI0: /* SPI0 */ - sio_index = SIO_ID_SPI0; - serialio_d21_ltr(bar0); - serialio_d21_mode(sio_index, SIO_PIN_INTC, - config->sio_acpi_mode); - break; - case PCH_DEVFN_SPI1: /* SPI1 */ - sio_index = SIO_ID_SPI1; - serialio_d21_ltr(bar0); - serialio_d21_mode(sio_index, SIO_PIN_INTC, - config->sio_acpi_mode); - break; - case PCH_DEVFN_UART0: /* UART0 */ - sio_index = SIO_ID_UART0; - if (!serialio_uart_is_debug(dev)) - serialio_d21_ltr(bar0); - serialio_d21_mode(sio_index, SIO_PIN_INTD, - config->sio_acpi_mode); - break; - case PCH_DEVFN_UART1: /* UART1 */ - sio_index = SIO_ID_UART1; - if (!serialio_uart_is_debug(dev)) - serialio_d21_ltr(bar0); - serialio_d21_mode(sio_index, SIO_PIN_INTD, - config->sio_acpi_mode); - break; - case PCH_DEVFN_SDIO: /* SDIO */ - sio_index = SIO_ID_SDIO; - serialio_d23_ltr(bar0); - serialio_d23_mode(config->sio_acpi_mode); - break; - default: - return; - } - - if (config->sio_acpi_mode) { - global_nvs_t *gnvs; - - /* Find ACPI NVS to update BARs */ - gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS); - if (!gnvs) { - printk(BIOS_ERR, "Unable to locate Global NVS\n"); - return; - } - - /* Save BAR0 and BAR1 to ACPI NVS */ - gnvs->dev.bar0[sio_index] = (u32)bar0->base; - gnvs->dev.bar1[sio_index] = (u32)bar1->base; - - /* Do not enable UART if it is used as debug port */ - if (!serialio_uart_is_debug(dev)) - gnvs->dev.enable[sio_index] = 1; - - /* Put device in D3hot state via BAR1 */ - if (dev->path.pci.devfn != PCH_DEVFN_SDMA) - serialio_enable_d3hot(bar1); /* all but SDMA */ - } -} - -static void serialio_set_resources(struct device *dev) -{ - pci_dev_set_resources(dev); - -#if CONFIG_INTEL_PCH_UART_CONSOLE - /* Update UART base address if used for debug */ - if (serialio_uart_is_debug(dev)) { - struct resource *res = find_resource(dev, PCI_BASE_ADDRESS_0); - if (res) - uartmem_setbaseaddr(res->base); - } -#endif -} - -static struct device_operations device_ops = { - .read_resources = &pci_dev_read_resources, - .set_resources = &serialio_set_resources, - .enable_resources = &pci_dev_enable_resources, - .init = &serialio_init, - .ops_pci = &broadwell_pci_ops, -}; - -static const unsigned short pci_device_ids[] = { - 0x9c60, 0x9ce0, /* 0:15.0 - SDMA */ - 0x9c61, 0x9ce1, /* 0:15.1 - I2C0 */ - 0x9c62, 0x9ce2, /* 0:15.2 - I2C1 */ - 0x9c65, 0x9ce5, /* 0:15.3 - SPI0 */ - 0x9c66, 0x9ce6, /* 0:15.4 - SPI1 */ - 0x9c63, 0x9ce3, /* 0:15.5 - UART0 */ - 0x9c64, 0x9ce4, /* 0:15.6 - UART1 */ - 0x9c35, 0x9cb5, /* 0:17.0 - SDIO */ - 0 -}; - -static const struct pci_driver pch_pcie __pci_driver = { - .ops = &device_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .devices = pci_device_ids, -}; |