first round name simplification. drop the <component>_ prefix.

the prefix was introduced in the early v2 tree many years ago
because our old build system "newconfig" could not handle two files with
the same name in different paths like /path/to/usb.c and
/another/path/to/usb.c correctly. Only one of the files would end up
being compiled into the final image.

Since Kconfig (actually since shortly before we switched to Kconfig) we
don't suffer from that problem anymore. So we could drop the sb700_
prefix from all those filenames (or, the <componentname>_ prefix in general)

- makes it easier to fork off a new chipset
- makes it easier to diff against other chipsets
- storing redundant information in filenames seems wrong

Signed-off-by: <stepan@coresystems.de>

Acked-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6149 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 63 insertions, 0 deletions

diff --git a/src/southbridge/amd/sb700/enable_usbdebug.c b/src/southbridge/amd/sb700/enable_usbdebug.c
new file mode 100644
index 0000000000..d74a9bbc9f
--- /dev/null
+++ b/src/southbridge/amd/sb700/enable_usbdebug.c
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 <stdint.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <usbdebug.h>
+#include <device/pci_def.h>
+#include "sb700.h"
+
+#define EHCI_EOR		(CONFIG_EHCI_BAR + 0x20)
+#define DEBUGPORT_MISC_CONTROL	(EHCI_EOR + 0x80)
+
+void set_debug_port(unsigned int port)
+{
+	u32 reg32;
+
+	/* Write the port number to DEBUGPORT_MISC_CONTROL[31:28]. */
+	reg32 = read32(DEBUGPORT_MISC_CONTROL);
+	reg32 &= ~(0xf << 28);
+	reg32 |= (port << 28);
+	reg32 |= (1 << 27); /* Enable Debug Port port number remapping. */
+	write32(DEBUGPORT_MISC_CONTROL, reg32);
+}
+
+/*
+ * Note: The SB700 has two EHCI devices, D18:F2 and D19:F2.
+ * This code currently only supports the first one, i.e., USB Debug devices
+ * attached to physical USB ports belonging to the first EHCI device.
+ */
+void sb700_enable_usbdebug(unsigned int port)
+{
+	device_t dev = PCI_DEV(0, 0x12, 2); /* USB EHCI, D18:F2 */
+
+	/* Set the EHCI BAR address. */
+	pci_write_config32(dev, EHCI_BAR_INDEX, CONFIG_EHCI_BAR);
+
+	/* Enable access to the EHCI memory space registers. */
+	pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
+
+	/*
+	* Select the requested physical USB port (1-15) as the Debug Port.
+	* Must be called after the EHCI BAR has been set up (see above).
+	*/
+	set_debug_port(port);
+}