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Diffstat (limited to 'src/soc/intel/skylake/serialio.c')
-rw-r--r--src/soc/intel/skylake/serialio.c318
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,
-};