diff options
author | Martin Roth <gaumless@gmail.com> | 2014-05-21 14:21:22 -0600 |
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committer | Martin Roth <gaumless@gmail.com> | 2014-07-30 19:00:44 +0200 |
commit | 829c41da6cd9d8e9c9244c8c9ea2b181ea5ab930 (patch) | |
tree | e4923fcc360b33e7f441031df55db731119fa508 /src/southbridge/intel/fsp_rangeley/early_usb.c | |
parent | 2963ae7fd49c7086ca9c4231f00a94e2f8a33080 (diff) |
southbridge/intel: Add fsp_rangeley support
This adds the southbridge initialization pieces for Intel's Atom C2000
processor (formerly Rangeley). It is intended to be used with the Intel
Atom C2000 FSP and does not contain all of the pieces that would
otherwise be required for initialization.
Change-Id: I416e85bd6e9c9dcf79f97785074135902fdd18b7
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: http://review.coreboot.org/6370
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/southbridge/intel/fsp_rangeley/early_usb.c')
-rw-r--r-- | src/southbridge/intel/fsp_rangeley/early_usb.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/southbridge/intel/fsp_rangeley/early_usb.c b/src/southbridge/intel/fsp_rangeley/early_usb.c new file mode 100644 index 0000000000..40759b3387 --- /dev/null +++ b/src/southbridge/intel/fsp_rangeley/early_usb.c @@ -0,0 +1,47 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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 + */ + +#include <arch/io.h> +#include <console/console.h> +#include <device/pci_ids.h> +#include <device/pci_def.h> +#include "soc.h" + +#define SOC_EHCI1_TEMP_BAR0 0xe8000000 + +/* + * Setup USB controller MMIO BAR to prevent the + * reference code from resetting the controller. + * + * The BAR will be re-assigned during device + * enumeration so these are only temporary. + */ +void enable_usb_bar(void) +{ + device_t usb0 = SOC_EHCI1_DEV; + u32 cmd; + + /* USB Controller 0 */ + pci_write_config32(usb0, PCI_BASE_ADDRESS_0, + SOC_EHCI1_TEMP_BAR0); + cmd = pci_read_config32(usb0, PCI_COMMAND); + cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + pci_write_config32(usb0, PCI_COMMAND, cmd); +} |