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[mirror_edk2.git] / Omap35xxPkg / PciEmulation / PciEmulation.c

/** @file\r
\r
  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
  Copyright (c) 2016, Linaro, Ltd. All rights reserved.<BR>\r
\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <PiDxe.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/NonDiscoverableDeviceRegistrationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
#include <Protocol/EmbeddedExternalDevice.h>\r
\r
#include <TPS65950.h>\r
#include <Omap3530/Omap3530.h>\r
\r
EMBEDDED_EXTERNAL_DEVICE   *gTPS65950;\r
\r
#define HOST_CONTROLLER_OPERATION_REG_SIZE  0x44\r
\r
STATIC\r
EFI_STATUS\r
ConfigureUSBHost (\r
  NON_DISCOVERABLE_DEVICE   *Device\r
  )\r
{\r
  EFI_STATUS Status;\r
  UINT8      Data = 0;\r
\r
  // Take USB host out of force-standby mode\r
  MmioWrite32 (UHH_SYSCONFIG, UHH_SYSCONFIG_MIDLEMODE_NO_STANDBY\r
                            | UHH_SYSCONFIG_CLOCKACTIVITY_ON\r
                            | UHH_SYSCONFIG_SIDLEMODE_NO_STANDBY\r
                            | UHH_SYSCONFIG_ENAWAKEUP_ENABLE\r
                            | UHH_SYSCONFIG_AUTOIDLE_ALWAYS_RUN);\r
  MmioWrite32 (UHH_HOSTCONFIG, UHH_HOSTCONFIG_P3_CONNECT_STATUS_DISCONNECT\r
                             | UHH_HOSTCONFIG_P2_CONNECT_STATUS_DISCONNECT\r
                             | UHH_HOSTCONFIG_P1_CONNECT_STATUS_DISCONNECT\r
                             | UHH_HOSTCONFIG_ENA_INCR_ALIGN_DISABLE\r
                             | UHH_HOSTCONFIG_ENA_INCR16_ENABLE\r
                             | UHH_HOSTCONFIG_ENA_INCR8_ENABLE\r
                             | UHH_HOSTCONFIG_ENA_INCR4_ENABLE\r
                             | UHH_HOSTCONFIG_AUTOPPD_ON_OVERCUR_EN_ON\r
                             | UHH_HOSTCONFIG_P1_ULPI_BYPASS_ULPI_MODE);\r
\r
  // USB reset (GPIO 147 - Port 5 pin 19) output high\r
  MmioAnd32 (GPIO5_BASE + GPIO_OE, ~BIT19);\r
  MmioWrite32 (GPIO5_BASE + GPIO_SETDATAOUT, BIT19);\r
\r
  // Get the Power IC protocol\r
  Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Power the USB PHY\r
  Data = VAUX_DEV_GRP_P1;\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEV_GRP), 1, &Data);\r
  ASSERT_EFI_ERROR(Status);\r
\r
  Data = VAUX_DEDICATED_18V;\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEDICATED), 1, &Data);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Enable power to the USB hub\r
  Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // LEDAON controls the power to the USB host, PWM is disabled\r
  Data &= ~LEDAPWM;\r
  Data |= LEDAON;\r
\r
  Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
PciEmulationEntryPoint (\r
  IN EFI_HANDLE       ImageHandle,\r
  IN EFI_SYSTEM_TABLE *SystemTable\r
  )\r
{\r
  UINT8                   CapabilityLength;\r
  UINT8                   PhysicalPorts;\r
  UINTN                   MemorySize;\r
\r
  CapabilityLength = MmioRead8 (USB_EHCI_HCCAPBASE);\r
  PhysicalPorts    = MmioRead32 (USB_EHCI_HCCAPBASE + 0x4) & 0x0000000F;\r
  MemorySize       = CapabilityLength + HOST_CONTROLLER_OPERATION_REG_SIZE +\r
                     4 * PhysicalPorts - 1;\r
\r
  return RegisterNonDiscoverableMmioDevice (\r
           NonDiscoverableDeviceTypeEhci,\r
           NonDiscoverableDeviceDmaTypeNonCoherent,\r
           ConfigureUSBHost,\r
           NULL,\r
           1,\r
           USB_EHCI_HCCAPBASE, MemorySize\r
           );\r
}\r