diff options
Diffstat (limited to 'src/soc/intel/skylake')
| -rw-r--r-- | src/soc/intel/skylake/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/skylake/sata.c | 72 |
2 files changed, 73 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc index 32eb708a97..f02f9561e2 100644 --- a/src/soc/intel/skylake/Makefile.inc +++ b/src/soc/intel/skylake/Makefile.inc @@ -73,6 +73,7 @@ ramstage-y += pei_data.c ramstage-y += pmc.c ramstage-y += pmutil.c ramstage-$(CONFIG_PLATFORM_USES_FSP2_0) += reset.c +ramstage-y += sata.c ramstage-y += sd.c ramstage-y += smbus.c ramstage-y += smbus_common.c diff --git a/src/soc/intel/skylake/sata.c b/src/soc/intel/skylake/sata.c new file mode 100644 index 0000000000..83fddcfba4 --- /dev/null +++ b/src/soc/intel/skylake/sata.c @@ -0,0 +1,72 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corporation. + * + * 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 <device/device.h> +#include <device/pci.h> +#include <device/pci_def.h> +#include <device/pci_ids.h> +#include <soc/ramstage.h> + +static void *get_ahci_bar(void) +{ + device_t dev = PCH_DEV_SATA; + uint32_t bar; + + bar = pci_read_config32(dev, PCI_BASE_ADDRESS_5); + + return (void *)(bar & ~PCI_BASE_ADDRESS_MEM_ATTR_MASK); +} + +/* + * SATA Port control and Status. By default, the SATA ports are set (by HW) + * to the disabled state (e.g. bits[3:0] == '0') as a result of an initial + * power on reset. When enabled by software as per SATA port mapping, + * the ports can transition between the on, partial and slumber states + * and can detect devices. When disabled, the port is in the off state and + * can't detect any devices. + */ +static void sata_final(device_t dev) +{ + void *ahcibar = get_ahci_bar(); + u8 port_impl; + + dev = PCH_DEV_SATA; + /* Read Ports Implemented (GHC_PI) */ + port_impl = read32(ahcibar + 0x0c); + port_impl = ~port_impl & 0x07; + /* Port enable */ + pci_write_config8(dev, 0x92, port_impl); +} + +static struct device_operations sata_ops = { + .read_resources = &pci_dev_read_resources, + .set_resources = &pci_dev_set_resources, + .enable_resources = &pci_dev_enable_resources, + .final = sata_final, + .ops_pci = &soc_pci_ops, +}; + +static const unsigned short pci_device_ids[] = { + 0x9d03, /* SKL-U Base */ + 0x9d07, /* SKL-Y Premium, SKL-U Premium */ + 0xa282, /* KBL */ + 0 +}; + +static const struct pci_driver pch_sata __pci_driver = { + .ops = &sata_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, +}; |