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   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include <PiDxe.h>
  11
  12 #include <Library/BaseLib.h>
  13 #include <Library/DebugLib.h>
  14 #include <Library/IoLib.h>
  15 #include <Library/NonDiscoverableDeviceRegistrationLib.h>
  16 #include <Library/UefiBootServicesTableLib.h>
  17
  18 #include <Protocol/EmbeddedExternalDevice.h>
  19
  20 #include <TPS65950.h>
  21 #include <Omap3530/Omap3530.h>
  22
  23 EMBEDDED_EXTERNAL_DEVICE   *gTPS65950;
  24
  25 #define HOST_CONTROLLER_OPERATION_REG_SIZE  0x44
  26
  27 STATIC
  28 EFI_STATUS
  29 ConfigureUSBHost (
  30   NON_DISCOVERABLE_DEVICE   *Device
  31   )
  32 {
  33   EFI_STATUS Status;
  34   UINT8      Data = 0;
  35
  36   // Take USB host out of force-standby mode
  37   MmioWrite32 (UHH_SYSCONFIG, UHH_SYSCONFIG_MIDLEMODE_NO_STANDBY
  38                             | UHH_SYSCONFIG_CLOCKACTIVITY_ON
  39                             | UHH_SYSCONFIG_SIDLEMODE_NO_STANDBY
  40                             | UHH_SYSCONFIG_ENAWAKEUP_ENABLE
  41                             | UHH_SYSCONFIG_AUTOIDLE_ALWAYS_RUN);
  42   MmioWrite32 (UHH_HOSTCONFIG, UHH_HOSTCONFIG_P3_CONNECT_STATUS_DISCONNECT
  43                              | UHH_HOSTCONFIG_P2_CONNECT_STATUS_DISCONNECT
  44                              | UHH_HOSTCONFIG_P1_CONNECT_STATUS_DISCONNECT
  45                              | UHH_HOSTCONFIG_ENA_INCR_ALIGN_DISABLE
  46                              | UHH_HOSTCONFIG_ENA_INCR16_ENABLE
  47                              | UHH_HOSTCONFIG_ENA_INCR8_ENABLE
  48                              | UHH_HOSTCONFIG_ENA_INCR4_ENABLE
  49                              | UHH_HOSTCONFIG_AUTOPPD_ON_OVERCUR_EN_ON
  50                              | UHH_HOSTCONFIG_P1_ULPI_BYPASS_ULPI_MODE);
  51
  52   // USB reset (GPIO 147 - Port 5 pin 19) output high
  53   MmioAnd32 (GPIO5_BASE + GPIO_OE, ~BIT19);
  54   MmioWrite32 (GPIO5_BASE + GPIO_SETDATAOUT, BIT19);
  55
  56   // Get the Power IC protocol
  57   Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
  58   ASSERT_EFI_ERROR (Status);
  59
  60   // Power the USB PHY
  61   Data = VAUX_DEV_GRP_P1;
  62   Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEV_GRP), 1, &Data);
  63   ASSERT_EFI_ERROR(Status);
  64
  65   Data = VAUX_DEDICATED_18V;
  66   Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEDICATED), 1, &Data);
  67   ASSERT_EFI_ERROR (Status);
  68
  69   // Enable power to the USB hub
  70   Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);
  71   ASSERT_EFI_ERROR (Status);
  72
  73   // LEDAON controls the power to the USB host, PWM is disabled
  74   Data &= ~LEDAPWM;
  75   Data |= LEDAON;
  76
  77   Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);
  78   ASSERT_EFI_ERROR (Status);
  79
  80   return EFI_SUCCESS;
  81 }
  82
  83 EFI_STATUS
  84 EFIAPI
  85 PciEmulationEntryPoint (
  86   IN EFI_HANDLE       ImageHandle,
  87   IN EFI_SYSTEM_TABLE *SystemTable
  88   )
  89 {
  90   UINT8                   CapabilityLength;
  91   UINT8                   PhysicalPorts;
  92   UINTN                   MemorySize;
  93
  94   CapabilityLength = MmioRead8 (USB_EHCI_HCCAPBASE);
  95   PhysicalPorts    = MmioRead32 (USB_EHCI_HCCAPBASE + 0x4) & 0x0000000F;
  96   MemorySize       = CapabilityLength + HOST_CONTROLLER_OPERATION_REG_SIZE +
  97                      4 * PhysicalPorts - 1;
  98
  99   return RegisterNonDiscoverableMmioDevice (
 100            NonDiscoverableDeviceTypeEhci,
 101            NonDiscoverableDeviceDmaTypeNonCoherent,
 102            ConfigureUSBHost,
 103            NULL,
 104            1,
 105            USB_EHCI_HCCAPBASE, MemorySize
 106            );
 107 }