| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2010 Advanced Micro Devices, 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. |
| */ |
| |
| #include <console/console.h> |
| #include <device/mmio.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include "hudson.h" |
| #include "imc.h" |
| #include "smbus.h" |
| #include "smi.h" |
| |
| /* Offsets from ACPI_MMIO_BASE |
| * This is defined by AGESA, but we don't include AGESA headers to avoid |
| * polluting the namespace. |
| */ |
| #define PM_MMIO_BASE 0xfed80300 |
| |
| void pm_write8(u8 reg, u8 value) |
| { |
| write8((void *)((uintptr_t)PM_MMIO_BASE + reg), value); |
| } |
| |
| u8 pm_read8(u8 reg) |
| { |
| return read8((void *)((uintptr_t)PM_MMIO_BASE + reg)); |
| } |
| |
| void pm_write16(u8 reg, u16 value) |
| { |
| write16((void *)((uintptr_t)PM_MMIO_BASE + reg), value); |
| } |
| |
| u16 pm_read16(u16 reg) |
| { |
| return read16((void *)((uintptr_t)PM_MMIO_BASE + reg)); |
| } |
| |
| #define PM_REG_USB_ENABLE 0xef |
| |
| enum usb_enable { |
| USB_EN_DEVFN_12_0 = (1 << 0), |
| USB_EN_DEVFN_12_2 = (1 << 1), |
| USB_EN_DEVFN_13_0 = (1 << 2), |
| USB_EN_DEVFN_13_2 = (1 << 3), |
| USB_EN_DEVFN_16_0 = (1 << 4), |
| USB_EN_DEVFN_16_2 = (1 << 5), |
| }; |
| |
| static void hudson_disable_usb(u8 disable) |
| { |
| u8 reg8; |
| |
| /* Bit 7 handles routing, 6 is reserved. we don't mess with those */ |
| disable &= 0x3f; |
| |
| reg8 = pm_read8(PM_REG_USB_ENABLE); |
| reg8 &= ~disable; |
| pm_write8(PM_REG_USB_ENABLE, reg8); |
| } |
| |
| void hudson_enable(struct device *dev) |
| { |
| printk(BIOS_DEBUG, "hudson_enable()\n"); |
| switch (dev->path.pci.devfn) { |
| case PCI_DEVFN(0x14, 5): |
| if (dev->enabled == 0) { |
| u32 usb_device_id = pci_read_config16(dev, PCI_DEVICE_ID); |
| u8 reg8; |
| if (usb_device_id == PCI_DEVICE_ID_AMD_SB900_USB_20_5) { |
| /* turn off and remove device 0:14.5 from PCI space */ |
| reg8 = pm_read8(0xef); |
| reg8 &= ~(1 << 6); |
| pm_write8(0xef, reg8); |
| } |
| } |
| break; |
| |
| case PCI_DEVFN(0x14, 7): |
| if (dev->enabled == 0) { |
| u32 sd_device_id = pci_read_config16(dev, PCI_DEVICE_ID); |
| /* turn off the SDHC controller in the PM reg */ |
| u8 reg8; |
| if (sd_device_id == PCI_DEVICE_ID_AMD_HUDSON_SD) { |
| reg8 = pm_read8(0xe7); |
| reg8 &= ~(1 << 0); |
| pm_write8(0xe7, reg8); |
| } |
| else if (sd_device_id == PCI_DEVICE_ID_AMD_YANGTZE_SD) { |
| reg8 = pm_read8(0xe8); |
| reg8 &= ~(1 << 0); |
| pm_write8(0xe8, reg8); |
| } |
| /* remove device 0:14.7 from PCI space */ |
| reg8 = pm_read8(0xd3); |
| reg8 &= ~(1 << 6); |
| pm_write8(0xd3, reg8); |
| } |
| break; |
| |
| /* Make sure to disable other functions if function 0 is disabled */ |
| case PCI_DEVFN(0x12, 0): |
| if (dev->enabled == 0) |
| hudson_disable_usb(USB_EN_DEVFN_12_0); |
| case PCI_DEVFN(0x12, 2): /* Fall through */ |
| if (dev->enabled == 0) |
| hudson_disable_usb(USB_EN_DEVFN_12_2); |
| break; |
| case PCI_DEVFN(0x13, 0): |
| if (dev->enabled == 0) |
| hudson_disable_usb(USB_EN_DEVFN_13_0); |
| case PCI_DEVFN(0x13, 2): /* Fall through */ |
| if (dev->enabled == 0) |
| hudson_disable_usb(USB_EN_DEVFN_13_2); |
| break; |
| case PCI_DEVFN(0x16, 0): |
| if (dev->enabled == 0) |
| hudson_disable_usb(USB_EN_DEVFN_16_0); |
| case PCI_DEVFN(0x16, 2): /* Fall through */ |
| if (dev->enabled == 0) |
| hudson_disable_usb(USB_EN_DEVFN_16_2); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| |
| static void hudson_init_acpi_ports(void) |
| { |
| /* We use some of these ports in SMM regardless of whether or not |
| * ACPI tables are generated. Enable these ports indiscriminately. |
| */ |
| |
| pm_write16(0x60, ACPI_PM_EVT_BLK); |
| pm_write16(0x62, ACPI_PM1_CNT_BLK); |
| pm_write16(0x64, ACPI_PM_TMR_BLK); |
| pm_write16(0x68, ACPI_GPE0_BLK); |
| /* CpuControl is in \_PR.CP00, 6 bytes */ |
| pm_write16(0x66, ACPI_CPU_CONTROL); |
| |
| if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) { |
| pm_write16(0x6a, ACPI_SMI_CTL_PORT); |
| hudson_enable_acpi_cmd_smi(); |
| } else { |
| pm_write16(0x6a, 0); |
| } |
| |
| /* AcpiDecodeEnable, When set, SB uses the contents of the PM registers |
| * at index 60-6B to decode ACPI I/O address. AcpiSmiEn & SmiCmdEn |
| */ |
| pm_write8(0x74, 1<<0 | 1<<1 | 1<<4 | 1<<2); |
| } |
| |
| static void hudson_init(void *chip_info) |
| { |
| hudson_init_acpi_ports(); |
| } |
| |
| static void hudson_final(void *chip_info) |
| { |
| /* AMD AGESA does not enable thermal zone, so we enable it here. */ |
| if (IS_ENABLED(CONFIG_HUDSON_IMC_FWM) && |
| !IS_ENABLED(CONFIG_ACPI_ENABLE_THERMAL_ZONE)) |
| enable_imc_thermal_zone(); |
| } |
| |
| struct chip_operations southbridge_amd_agesa_hudson_ops = { |
| CHIP_NAME("ATI HUDSON") |
| .enable_dev = hudson_enable, |
| .init = hudson_init, |
| .final = hudson_final |
| }; |