Duncan Laurie (dlaurie@google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12794
-gerrit
commit 608cdd37eb99a8b48f0343519f42b00723362a3e Author: Duncan Laurie dlaurie@google.com Date: Tue Dec 22 17:15:29 2015 -0800
soc/intel: Add support for EHCI debug
This was removed from broadwell in commit 11874 but was never added anywhere that could be used by broadwell. Add it back to the soc/intel/common directory so EHCI debug can work again.
Change-Id: Ia93825a1e21a770f6c82d0989cb97980a5c700d6 Signed-off-by: Duncan Laurie dlaurie@google.com --- src/soc/intel/common/Makefile.inc | 3 ++ src/soc/intel/common/usb_debug.c | 59 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+)
diff --git a/src/soc/intel/common/Makefile.inc b/src/soc/intel/common/Makefile.inc index a7218b7..5c69bca 100644 --- a/src/soc/intel/common/Makefile.inc +++ b/src/soc/intel/common/Makefile.inc @@ -15,6 +15,9 @@ ramstage-y += util.c ramstage-$(CONFIG_MMA) += mma.c ramstage-$(CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE) += acpi_wake_source.c
+romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += usb_debug.c +ramstage-$(CONFIG_USBDEBUG) += usb_debug.c + # Create and add the MRC cache to the cbfs image ifneq ($(CONFIG_CHROMEOS),y) $(obj)/mrc.cache: $(obj)/config.h diff --git a/src/soc/intel/common/usb_debug.c b/src/soc/intel/common/usb_debug.c new file mode 100644 index 0000000..fffebf0 --- /dev/null +++ b/src/soc/intel/common/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); +}