Add init for EHCI so that USB can be used.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/x86/cpu/ivybridge/Makefile | 1 + arch/x86/cpu/ivybridge/bd82x6x.c | 2 ++ arch/x86/cpu/ivybridge/usb_ehci.c | 29 +++++++++++++++++++++++++++ arch/x86/include/asm/arch-ivybridge/bd82x6x.h | 1 + 4 files changed, 33 insertions(+) create mode 100644 arch/x86/cpu/ivybridge/usb_ehci.c
diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile index c6342cd..4a00757 100644 --- a/arch/x86/cpu/ivybridge/Makefile +++ b/arch/x86/cpu/ivybridge/Makefile @@ -17,3 +17,4 @@ obj-y += pci.o obj-y += report_platform.o obj-y += sata.o obj-y += sdram.o +obj-y += usb_ehci.o diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c index b54f5c7..1fcbc28 100644 --- a/arch/x86/cpu/ivybridge/bd82x6x.c +++ b/arch/x86/cpu/ivybridge/bd82x6x.c @@ -102,6 +102,8 @@ int bd82x6x_init_pci_devices(void) return -EINVAL; } bd82x6x_sata_init(PCH_SATA_DEV, blob, sata_node); + bd82x6x_usb_ehci_init(PCH_EHCI1_DEV); + bd82x6x_usb_ehci_init(PCH_EHCI2_DEV);
return 0; } diff --git a/arch/x86/cpu/ivybridge/usb_ehci.c b/arch/x86/cpu/ivybridge/usb_ehci.c new file mode 100644 index 0000000..291c971 --- /dev/null +++ b/arch/x86/cpu/ivybridge/usb_ehci.c @@ -0,0 +1,29 @@ +/* + * From Coreboot + * Copyright (C) 2008-2009 coresystems GmbH + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/pci.h> +#include <asm/arch/pch.h> + +void bd82x6x_usb_ehci_init(pci_dev_t dev) +{ + u32 reg32; + + /* Disable Wake on Disconnect in RMH */ + reg32 = readl(RCB_REG(0x35b0)); + reg32 |= 0x22; + writel(reg32, RCB_REG(0x35b0)); + + debug("EHCI: Setting up controller.. "); + reg32 = pci_read_config32(dev, PCI_COMMAND); + reg32 |= PCI_COMMAND_MASTER; + /* reg32 |= PCI_COMMAND_SERR; */ + pci_write_config32(dev, PCI_COMMAND, reg32); + + debug("done.\n"); +} diff --git a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h index 644755f..2e6a079 100644 --- a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h +++ b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h @@ -10,6 +10,7 @@ void bd82x6x_sata_init(pci_dev_t dev, const void *blob, int node); void bd82x6x_sata_enable(pci_dev_t dev, const void *blob, int node); void bd82x6x_pci_init(pci_dev_t dev); +void bd82x6x_usb_ehci_init(pci_dev_t dev); int bd82x6x_init_pci_devices(void); int bd82x6x_init(void);