diff options
Diffstat (limited to 'src/southbridge/amd/pi/avalon/enable_usbdebug.c')
-rw-r--r-- | src/southbridge/amd/pi/avalon/enable_usbdebug.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/southbridge/amd/pi/avalon/enable_usbdebug.c b/src/southbridge/amd/pi/avalon/enable_usbdebug.c new file mode 100644 index 0000000000..258267ed04 --- /dev/null +++ b/src/southbridge/amd/pi/avalon/enable_usbdebug.c @@ -0,0 +1,63 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Advanced Micro Devices, Inc. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +// Use simple device model for this file even in ramstage +#define __SIMPLE_DEVICE__ + +#include <stdint.h> +#include <arch/io.h> +#include <device/pci_ehci.h> +#include <device/pci_def.h> +#include "hudson.h" + +#define DEBUGPORT_MISC_CONTROL 0x80 + +pci_devfn_t pci_ehci_dbg_dev(unsigned int hcd_idx) +{ + if (hcd_idx==3) + return PCI_DEV(0, 0x16, 2); + else if (hcd_idx==2) + return PCI_DEV(0, 0x13, 2); + else + return PCI_DEV(0, 0x12, 2); +} + +void pci_ehci_dbg_set_port(pci_devfn_t dev, unsigned int port) +{ + u32 base_regs = pci_ehci_base_regs(dev); + u32 reg32; + + /* Write the port number to DEBUGPORT_MISC_CONTROL[31:28]. */ + reg32 = read32(base_regs + DEBUGPORT_MISC_CONTROL); + reg32 &= ~(0xf << 28); + reg32 |= (port << 28); + reg32 |= (1 << 27); /* Enable Debug Port port number remapping. */ + write32(base_regs + DEBUGPORT_MISC_CONTROL, reg32); +} + + +void pci_ehci_dbg_enable(pci_devfn_t dev, unsigned long base) +{ + /* Enable all of the USB controllers */ + outb(0xEF, PM_INDEX); + outb(0x7F, PM_DATA); + + pci_write_config32(dev, EHCI_BAR_INDEX, base); + pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); +} |