diff options
Diffstat (limited to 'src/soc/intel/apollolake/sram.c')
| -rw-r--r-- | src/soc/intel/apollolake/sram.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/sram.c b/src/soc/intel/apollolake/sram.c new file mode 100644 index 0000000000..44eb0ee79e --- /dev/null +++ b/src/soc/intel/apollolake/sram.c @@ -0,0 +1,68 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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_ids.h> +#include <soc/pci_ids.h> +#include <soc/pci_devs.h> +#include <soc/iomap.h> + +static void read_resources(device_t dev) +{ + struct resource *res; + pci_dev_read_resources(dev); + + res = new_resource(dev, PCI_BASE_ADDRESS_0); + res->base = PMC_SRAM_BASE_0; + res->size = PMC_SRAM_SIZE_0; + res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; + + res = new_resource(dev, PCI_BASE_ADDRESS_2); + res->base = PMC_SRAM_BASE_1; + res->size = PMC_SRAM_SIZE_1; + res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; +} + +static void set_resources(device_t dev) +{ + struct resource *res; + pci_dev_set_resources(dev); + + res = find_resource(dev, PCI_BASE_ADDRESS_0); + pci_write_config32(dev, res->index, res->base); + dev->command |= PCI_COMMAND_MEMORY; + res->flags |= IORESOURCE_STORED; + report_resource_stored(dev, res, " SRAM BAR 0"); + + res = find_resource(dev, PCI_BASE_ADDRESS_2); + pci_write_config32(dev, res->index, res->base); + dev->command |= PCI_COMMAND_MEMORY; + res->flags |= IORESOURCE_STORED; + report_resource_stored(dev, res, " SRAM BAR 1"); +} + +static const struct device_operations device_ops = { + .read_resources = read_resources, + .set_resources = set_resources, + .enable_resources = pci_dev_enable_resources, +}; + +static const struct pci_driver pmc __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_APOLLOLAKE_SRAM, +}; |