Omap35xxPkg/PciEmulation/PciEmulation.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4   Copyright (c) 2016, Linaro, Ltd. All rights reserved.<BR>
   5
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include <PiDxe.h>
  17
  18 #include <Library/BaseLib.h>
  19 #include <Library/DebugLib.h>
  20 #include <Library/IoLib.h>
  21 #include <Library/NonDiscoverableDeviceRegistrationLib.h>
  22 #include <Library/UefiBootServicesTableLib.h>
  23
  24 #include <Protocol/EmbeddedExternalDevice.h>
  25
  26 #include <TPS65950.h>
  27 #include <Omap3530/Omap3530.h>
  28
  29 EMBEDDED_EXTERNAL_DEVICE   *gTPS65950;
  30
  31 #define HOST_CONTROLLER_OPERATION_REG_SIZE  0x44
  32
  33 STATIC
  34 EFI_STATUS
  35 ConfigureUSBHost (
  36   NON_DISCOVERABLE_DEVICE   *Device
  37   )
  38 {
  39   EFI_STATUS Status;
  40   UINT8      Data = 0;
  41
  42   // Take USB host out of force-standby mode
  43   MmioWrite32 (UHH_SYSCONFIG, UHH_SYSCONFIG_MIDLEMODE_NO_STANDBY
  44                             | UHH_SYSCONFIG_CLOCKACTIVITY_ON
  45                             | UHH_SYSCONFIG_SIDLEMODE_NO_STANDBY
  46                             | UHH_SYSCONFIG_ENAWAKEUP_ENABLE
  47                             | UHH_SYSCONFIG_AUTOIDLE_ALWAYS_RUN);
  48   MmioWrite32 (UHH_HOSTCONFIG, UHH_HOSTCONFIG_P3_CONNECT_STATUS_DISCONNECT
  49                              | UHH_HOSTCONFIG_P2_CONNECT_STATUS_DISCONNECT
  50                              | UHH_HOSTCONFIG_P1_CONNECT_STATUS_DISCONNECT
  51                              | UHH_HOSTCONFIG_ENA_INCR_ALIGN_DISABLE
  52                              | UHH_HOSTCONFIG_ENA_INCR16_ENABLE
  53                              | UHH_HOSTCONFIG_ENA_INCR8_ENABLE
  54                              | UHH_HOSTCONFIG_ENA_INCR4_ENABLE
  55                              | UHH_HOSTCONFIG_AUTOPPD_ON_OVERCUR_EN_ON
  56                              | UHH_HOSTCONFIG_P1_ULPI_BYPASS_ULPI_MODE);
  57
  58   // USB reset (GPIO 147 - Port 5 pin 19) output high
  59   MmioAnd32 (GPIO5_BASE + GPIO_OE, ~BIT19);
  60   MmioWrite32 (GPIO5_BASE + GPIO_SETDATAOUT, BIT19);
  61
  62   // Get the Power IC protocol
  63   Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
  64   ASSERT_EFI_ERROR (Status);
  65
  66   // Power the USB PHY
  67   Data = VAUX_DEV_GRP_P1;
  68   Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEV_GRP), 1, &Data);
  69   ASSERT_EFI_ERROR(Status);
  70
  71   Data = VAUX_DEDICATED_18V;
  72   Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEDICATED), 1, &Data);
  73   ASSERT_EFI_ERROR (Status);
  74
  75   // Enable power to the USB hub
  76   Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);
  77   ASSERT_EFI_ERROR (Status);
  78
  79   // LEDAON controls the power to the USB host, PWM is disabled
  80   Data &= ~LEDAPWM;
  81   Data |= LEDAON;
  82
  83   Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);
  84   ASSERT_EFI_ERROR (Status);
  85
  86   return EFI_SUCCESS;
  87 }
  88
  89 EFI_STATUS
  90 EFIAPI
  91 PciEmulationEntryPoint (
  92   IN EFI_HANDLE       ImageHandle,
  93   IN EFI_SYSTEM_TABLE *SystemTable
  94   )
  95 {
  96   UINT8                   CapabilityLength;
  97   UINT8                   PhysicalPorts;
  98   UINTN                   MemorySize;
  99
 100   CapabilityLength = MmioRead8 (USB_EHCI_HCCAPBASE);
 101   PhysicalPorts    = MmioRead32 (USB_EHCI_HCCAPBASE + 0x4) & 0x0000000F;
 102   MemorySize       = CapabilityLength + HOST_CONTROLLER_OPERATION_REG_SIZE +
 103                      4 * PhysicalPorts - 1;
 104
 105   return RegisterNonDiscoverableMmioDevice (
 106            NonDiscoverableDeviceTypeEhci,
 107            NonDiscoverableDeviceDmaTypeNonCoherent,
 108            ConfigureUSBHost,
 109            NULL,
 110            1,
 111            USB_EHCI_HCCAPBASE, MemorySize
 112            );
 113 }