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x86: ivybridge: Set up EHCI USB 

Add init for EHCI so that USB can be used.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2014-11-14 18:18:40 -07:00
parent 4896f4acc8
commit 9baeca4b89
4 changed files with 33 additions and 0 deletions
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1
arch/x86/cpu/ivybridge/Makefile
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@ -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

2
arch/x86/cpu/ivybridge/bd82x6x.c
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@ -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;
}

29
arch/x86/cpu/ivybridge/usb_ehci.c Normal file
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@ -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");
}

1
arch/x86/include/asm/arch-ivybridge/bd82x6x.h
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@ -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);