| Simon Glass | ac9609c | 2016-03-11 22:07:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Chromium Authors |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0 |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <dm.h> |
| 9 | #include <asm/io.h> |
| 10 | #include <asm/arch/iomap.h> |
| 11 | #include <asm/arch/pch.h> |
| 12 | |
| 13 | static int broadwell_northbridge_early_init(struct udevice *dev) |
| 14 | { |
| 15 | /* Move earlier? */ |
| 16 | dm_pci_write_config32(dev, PCIEXBAR + 4, 0); |
| 17 | /* 64MiB - 0-63 buses */ |
| 18 | dm_pci_write_config32(dev, PCIEXBAR, MCFG_BASE_ADDRESS | 4 | 1); |
| 19 | |
| 20 | dm_pci_write_config32(dev, MCHBAR, MCH_BASE_ADDRESS | 1); |
| 21 | dm_pci_write_config32(dev, DMIBAR, DMI_BASE_ADDRESS | 1); |
| 22 | dm_pci_write_config32(dev, EPBAR, EP_BASE_ADDRESS | 1); |
| 23 | writel(EDRAM_BASE_ADDRESS | 1, MCH_BASE_ADDRESS + EDRAMBAR); |
| 24 | writel(GDXC_BASE_ADDRESS | 1, MCH_BASE_ADDRESS + GDXCBAR); |
| 25 | |
| 26 | /* Set C0000-FFFFF to access RAM on both reads and writes */ |
| 27 | dm_pci_write_config8(dev, PAM0, 0x30); |
| 28 | dm_pci_write_config8(dev, PAM1, 0x33); |
| 29 | dm_pci_write_config8(dev, PAM2, 0x33); |
| 30 | dm_pci_write_config8(dev, PAM3, 0x33); |
| 31 | dm_pci_write_config8(dev, PAM4, 0x33); |
| 32 | dm_pci_write_config8(dev, PAM5, 0x33); |
| 33 | dm_pci_write_config8(dev, PAM6, 0x33); |
| 34 | |
| 35 | /* Device enable: IGD and Mini-HD */ |
| 36 | dm_pci_write_config32(dev, DEVEN, DEVEN_D0EN | DEVEN_D2EN | DEVEN_D3EN); |
| 37 | |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | static int broadwell_northbridge_probe(struct udevice *dev) |
| 42 | { |
| 43 | if (!(gd->flags & GD_FLG_RELOC)) |
| 44 | return broadwell_northbridge_early_init(dev); |
| 45 | |
| 46 | return 0; |
| 47 | } |
| 48 | |
| 49 | static const struct udevice_id broadwell_northbridge_ids[] = { |
| 50 | { .compatible = "intel,broadwell-northbridge" }, |
| 51 | { } |
| 52 | }; |
| 53 | |
| 54 | U_BOOT_DRIVER(broadwell_northbridge_drv) = { |
| 55 | .name = "broadwell_northbridge", |
| 56 | .id = UCLASS_NORTHBRIDGE, |
| 57 | .of_match = broadwell_northbridge_ids, |
| 58 | .probe = broadwell_northbridge_probe, |
| 59 | }; |