[coreboot-gerrit] Patch set updated for coreboot: soc/intel/broadwell: Add back support for EHCI debug setup
Duncan Laurie (dlaurie@google.com)
gerrit at coreboot.org
Sun Dec 27 03:47:03 CET 2015
Duncan Laurie (dlaurie at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12794
-gerrit
commit bcf5e4637ebb5b921b4d81334b440717cf3eb2e3
Author: Duncan Laurie <dlaurie at google.com>
Date: Tue Dec 22 17:15:29 2015 -0800
soc/intel/broadwell: Add back support for EHCI debug setup
The EHCI debug device setup code was removed from broadwell in
commit 49ee5ef: http://review.coreboot.org/11874
However the generic device setup code is in the southbridge/common/intel
directory while broadwell is in the soc directory so this is not used.
Add it back to the broadwell soc to fix undefined reference compile
errors with 'pci_ehci_dbg_dev' and 'pci_ehci_dbg_enable'.
This was tested to compile and produce romstage and ramstage output on a
google/samus board.
Change-Id: Ia93825a1e21a770f6c82d0989cb97980a5c700d6
Signed-off-by: Duncan Laurie <dlaurie at google.com>
---
src/soc/intel/broadwell/Makefile.inc | 2 ++
src/soc/intel/broadwell/usb_debug.c | 59 ++++++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+)
diff --git a/src/soc/intel/broadwell/Makefile.inc b/src/soc/intel/broadwell/Makefile.inc
index e10704b..4da8c20 100644
--- a/src/soc/intel/broadwell/Makefile.inc
+++ b/src/soc/intel/broadwell/Makefile.inc
@@ -60,6 +60,8 @@ ramstage-y += systemagent.c
ramstage-y += tsc_freq.c
romstage-y += tsc_freq.c
smm-y += tsc_freq.c
+romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += usb_debug.c
+ramstage-$(CONFIG_USBDEBUG) += usb_debug.c
ramstage-y += ehci.c
ramstage-y += xhci.c
smm-y += xhci.c
diff --git a/src/soc/intel/broadwell/usb_debug.c b/src/soc/intel/broadwell/usb_debug.c
new file mode 100644
index 0000000..fffebf0
--- /dev/null
+++ b/src/soc/intel/broadwell/usb_debug.c
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 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.
+ */
+
+// Use simple device model for this file even in ramstage
+#define __SIMPLE_DEVICE__
+
+#include <stdint.h>
+#include <arch/io.h>
+#include <console/console.h>
+#include <device/pci_ehci.h>
+#include <device/pci_def.h>
+
+pci_devfn_t pci_ehci_dbg_dev(unsigned int hcd_idx)
+{
+ u32 class;
+ pci_devfn_t dev = PCI_DEV(0, 0x1d, 0);
+
+ class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
+ if (class != PCI_EHCI_CLASSCODE)
+ return 0;
+
+ return dev;
+}
+
+void pci_ehci_dbg_set_port(pci_devfn_t dev, unsigned int port)
+{
+ /* Hardcoded to physical port 1 */
+}
+
+void pci_ehci_dbg_enable(pci_devfn_t dev, unsigned long base)
+{
+ u32 tmp32;
+
+ if (!dev)
+ return;
+
+ /* Set the EHCI BAR address. */
+ pci_write_config32(dev, EHCI_BAR_INDEX, base);
+
+ /* Enable access to the EHCI memory space registers. */
+ pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
+
+ /* Force ownership of hte Debug Port to the EHCI controller. */
+ tmp32 = read32((void *)(base + CONFIG_EHCI_DEBUG_OFFSET));
+ tmp32 |= (1 << 30);
+ write32((void *)(base + CONFIG_EHCI_DEBUG_OFFSET), tmp32);
+}
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