diff options
author | York Yang <york.yang@intel.com> | 2016-03-09 10:54:26 -0800 |
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committer | Martin Roth <martinroth@google.com> | 2016-04-14 19:02:07 +0200 |
commit | d7cba288e4eb17e6e5c80b7ac4465357e0fbd31a (patch) | |
tree | f9544dca89728a720776f66f9e7414f5a847c071 /src/soc/intel/fsp_broadwell_de/southcluster.c | |
parent | cd9aec6fb04f3fcd59d053930f93d288358bf1ad (diff) | |
download | coreboot-d7cba288e4eb17e6e5c80b7ac4465357e0fbd31a.tar.xz |
soc/intel: Add Broadwell-DE SoC support
Initial files to support Broadwell-DE SoC. This is FSP 1.0 based
project and is based on Broadwell-DE Gold release. Change has been
verified on Intel Camelback Mountain CRB.
Change-Id: I20ce8ee8dd1113a7a20a96910292697421f1ca57
Signed-off-by: York Yang <york.yang@intel.com>
Reviewed-on: https://review.coreboot.org/14014
Tested-by: build bot (Jenkins)
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/intel/fsp_broadwell_de/southcluster.c')
-rw-r--r-- | src/soc/intel/fsp_broadwell_de/southcluster.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/soc/intel/fsp_broadwell_de/southcluster.c b/src/soc/intel/fsp_broadwell_de/southcluster.c new file mode 100644 index 0000000000..7024814bb2 --- /dev/null +++ b/src/soc/intel/fsp_broadwell_de/southcluster.c @@ -0,0 +1,267 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2013 Google Inc. + * Copyright (C) 2015-2016 Intel Corp. + * + * 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 <stdint.h> +#include <arch/io.h> +#include <arch/ioapic.h> +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_def.h> +#include <pc80/mc146818rtc.h> +#include <pc80/i8254.h> +#include <pc80/i8259.h> +#include <pc80/isa-dma.h> +#include <romstage_handoff.h> +#include <soc/iomap.h> +#include <soc/irq.h> +#include <soc/lpc.h> +#include <soc/pci_devs.h> +#include <soc/ramstage.h> +#include <chip.h> + +typedef struct soc_intel_fsp_broadwell_de_config config_t; + +static inline void +add_mmio_resource(device_t dev, int i, unsigned long addr, unsigned long size) +{ + mmio_resource(dev, i, addr >> 10, size >> 10); +} + +static void sc_add_mmio_resources(device_t dev) +{ + add_mmio_resource(dev, 0xfeb0, + ABORT_BASE_ADDRESS, + ABORT_BASE_SIZE); + add_mmio_resource(dev, 0xfeb8, + PSEG_BASE_ADDRESS, + PSEG_BASE_SIZE); + add_mmio_resource(dev, 0xfec0, + IOXAPIC1_BASE_ADDRESS, + IOXAPIC1_BASE_SIZE); + add_mmio_resource(dev, 0xfec1, + IOXAPIC2_BASE_ADDRESS, + IOXAPIC2_BASE_SIZE); + add_mmio_resource(dev, 0xfed0, + PCH_BASE_ADDRESS, + PCH_BASE_SIZE); + add_mmio_resource(dev, 0xfee0, + LXAPIC_BASE_ADDRESS, + LXAPIC_BASE_SIZE); + add_mmio_resource(dev, 0xff00, + FIRMWARE_BASE_ADDRESS, + FIRMWARE_BASE_SIZE); +} + +/* + * Write PCI config space IRQ assignments. PCI devices have the INT_LINE + * (0x3C) and INT_PIN (0x3D) registers which report interrupt routing + * information to operating systems and drivers. The INT_PIN register is + * generally read only and reports which interrupt pin A - D it uses. The + * INT_LINE register is configurable and reports which IRQ (generally the + * PIC IRQs 1 - 15) it will use. This needs to take interrupt pin swizzling + * on devices that are downstream on a PCI bridge into account. + * + * This function will loop through all enabled PCI devices and program the + * INT_LINE register with the correct PIC IRQ number for the INT_PIN that it + * uses. It then configures each interrupt in the pic to be level triggered. + */ +static void write_pci_config_irqs(void) +{ + device_t irq_dev; + device_t targ_dev; + uint8_t int_line = 0; + uint8_t original_int_pin = 0; + uint8_t new_int_pin = 0; + uint16_t current_bdf = 0; + uint16_t parent_bdf = 0; + uint8_t pirq = 0; + uint8_t device_num = 0; + const struct broadwell_de_irq_route *ir = &global_broadwell_de_irq_route; + + if (ir == NULL) { + printk(BIOS_WARNING, "Warning: Can't write PCI IRQ assignments because" + " 'global_broadwell_de_irq_route' structure does not exist\n"); + return; + } + + /* + * Loop through all enabled devices and program their + * INT_LINE, INT_PIN registers from values taken from + * the Interrupt Route registers in the ILB + */ + printk(BIOS_DEBUG, "PCI_CFG IRQ: Write PCI config space IRQ assignments\n"); + for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { + + if ((irq_dev->path.type != DEVICE_PATH_PCI) || + (!irq_dev->enabled)) + continue; + + current_bdf = irq_dev->path.pci.devfn | + irq_dev->bus->secondary << 8; + + /* + * Step 1: Get the INT_PIN and device structure to look for + * in the pirq_data table defined in the mainboard directory. + */ + targ_dev = NULL; + new_int_pin = get_pci_irq_pins(irq_dev, &targ_dev); + if (targ_dev == NULL || new_int_pin < 1) + continue; + + /* Get the original INT_PIN for record keeping */ + original_int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); + + parent_bdf = targ_dev->path.pci.devfn + | targ_dev->bus->secondary << 8; + device_num = PCI_SLOT(parent_bdf); + + if (ir->pcidev[device_num] == 0) { + printk(BIOS_WARNING, + "Warning: PCI Device %d does not have an IRQ entry, skipping it\n", + device_num); + continue; + } + + /* Find the PIRQ that is attached to the INT_PIN this device uses */ + pirq = (ir->pcidev[device_num] >> ((new_int_pin - 1) * 4)) & 0xF; + + /* Get the INT_LINE this device/function will use */ + int_line = ir->pic[pirq]; + + if (int_line != PIRQ_PIC_IRQDISABLE) { + /* Set this IRQ to level triggered since it is used by a PCI device */ + i8259_configure_irq_trigger(int_line, IRQ_LEVEL_TRIGGERED); + /* Set the Interrupt Line register in PCI config space */ + pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); + } else { + /* Set the Interrupt line register as "unknown or unused" */ + pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, + PIRQ_PIC_UNKNOWN_UNUSED); + } + + printk(BIOS_SPEW, "\tINT_PIN\t\t: %d (%s)\n", + original_int_pin, pin_to_str(original_int_pin)); + if (parent_bdf != current_bdf) + printk(BIOS_SPEW, "\tSwizzled to\t: %d (%s)\n", + new_int_pin, pin_to_str(new_int_pin)); + printk(BIOS_SPEW, "\tPIRQ\t\t: %c\n" + "\tINT_LINE\t: 0x%X (IRQ %d)\n", + 'A' + pirq, int_line, int_line); + } + printk(BIOS_DEBUG, "PCI_CFG IRQ: Finished writing PCI config space IRQ assignments\n"); +} + +static void sc_pirq_init(device_t dev) +{ + int i; + const uint8_t *pirq = global_broadwell_de_irq_route.pic; + printk(BIOS_DEBUG, "Programming PIRQ[A-H] Routing Control Register\n"); + + for (i = 0; i < 8; i++) { + pci_write_config8(dev, (i < 4) ? (PIRQ_RCR1+i) : (PIRQ_RCR2+i-4), pirq[i]); + printk(BIOS_DEBUG, " PIRQ[%c]: %.2x\n" + , 'A'+i + , pci_read_config8(dev, (i < 4) ? (PIRQ_RCR1+i) : (PIRQ_RCR2+i-4)) + ); + } +} + +static void sc_add_io_resources(device_t dev) +{ + struct resource *res; + u8 io_index = 0; + + /* + * Add the default claimed IO range for the LPC device + * and mark it as subtractive decode. + */ + res = new_resource(dev, IOINDEX_SUBTRACTIVE(io_index++, 0)); + res->base = LPC_DEFAULT_IO_RANGE_LOWER; + res->size = LPC_DEFAULT_IO_RANGE_UPPER - LPC_DEFAULT_IO_RANGE_LOWER; + res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | + IORESOURCE_ASSIGNED | IORESOURCE_FIXED; +} + +static void sc_read_resources(device_t dev) +{ + pci_dev_read_resources(dev); + sc_add_mmio_resources(dev); + sc_add_io_resources(dev); +} + +static void sc_init(struct device *dev) +{ + printk(BIOS_DEBUG, "soc: southcluster_init\n"); + + /* Set the value for PCI command register. */ + pci_write_config16(dev, PCI_COMMAND, + PCI_COMMAND_IO | PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL); + + /* Program Serial IRQ register. */ + pci_write_config16(dev, 0x64, 0xd0); + + sc_pirq_init(dev); + write_pci_config_irqs(); + isa_dma_init(); + setup_i8259(); + setup_i8254(); +} + +/* + * Common code for the south cluster devices. + */ +void southcluster_enable_dev(device_t dev) +{ + uint32_t reg32; + + if (!dev->enabled) { + int slot = PCI_SLOT(dev->path.pci.devfn); + int func = PCI_FUNC(dev->path.pci.devfn); + printk(BIOS_DEBUG, "%s: Disabling device: %02x.%01x\n", + dev_path(dev), slot, func); + + /* Ensure memory, io, and bus master are all disabled */ + reg32 = pci_read_config32(dev, PCI_COMMAND); + reg32 &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); + pci_write_config32(dev, PCI_COMMAND, reg32); + } +} + +static struct device_operations device_ops = { + .read_resources = sc_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = NULL, + .init = sc_init, + .enable = southcluster_enable_dev, + .scan_bus = scan_lpc_bus, + .ops_pci = &soc_pci_ops, +}; + +static const struct pci_driver southcluster __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = LPC_DEVID, +}; + +static const struct pci_driver southcluster_es2 __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = LPC_DEVID_ES2, +}; |