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From: "Khasim Mohammed" <khasim.mohammed@arm.com>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>,
	Leif Lindholm <leif@nuviainc.com>,
	Sami Mujawar <sami.mujawar@arm.com>,
	Khasim Syed Mohammed <khasim.mohammed@arm.com>
Subject: [edk2-platforms][PATCH V1 2/4] Platform/ARM/N1Sdp: Introduce platform DXE driver
Date: Wed,  2 Jun 2021 12:45:50 +0530	[thread overview]
Message-ID: <20210602071552.1207-3-khasim.mohammed@arm.com> (raw)
In-Reply-To: <20210602071552.1207-1-khasim.mohammed@arm.com>

Add an initial platform DXE driver and support for ramdisk devices.

Signed-off-by: Deepak Pandey <Deepak.Pandey@arm.com>
Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@arm.com>
---
 Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.inf | 44 +++++++++++++++++
 Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.c   | 51 ++++++++++++++++++++
 2 files changed, 95 insertions(+)

diff --git a/Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.inf b/Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.inf
new file mode 100644
index 000000000000..925bde4063cc
--- /dev/null
+++ b/Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.inf
@@ -0,0 +1,44 @@
+## @file
+#  Platform DXE driver for N1Sdp
+#
+#  Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x0001001B
+  BASE_NAME                      = PlatformDxe
+  FILE_GUID                      = 11fc8b5a-377d-47a8-aee9-0093d3d3407f
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  ENTRY_POINT                    = ArmN1SdpEntryPoint
+
+[Sources.common]
+  PlatformDxe.c
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  ArmPlatformPkg/ArmPlatformPkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  MdePkg/MdePkg.dec
+  Platform/ARM/N1Sdp/N1SdpPlatform.dec
+
+[LibraryClasses]
+  HobLib
+  UefiDriverEntryPoint
+
+[Protocols]
+  gEfiRamDiskProtocolGuid
+
+[FeaturePcd]
+  gArmN1SdpTokenSpaceGuid.PcdRamDiskSupported
+
+[FixedPcd]
+  gArmN1SdpTokenSpaceGuid.PcdRamDiskBase
+  gArmN1SdpTokenSpaceGuid.PcdRamDiskSize
+
+[Depex]
+  gEfiRamDiskProtocolGuid
diff --git a/Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.c b/Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.c
new file mode 100644
index 000000000000..e0b89556d40d
--- /dev/null
+++ b/Platform/ARM/N1Sdp/Drivers/PlatformDxe/PlatformDxe.c
@@ -0,0 +1,51 @@
+/** @file
+
+  Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Protocol/RamDisk.h>
+
+/**
+  Entrypoint of Platform Dxe Driver
+
+  @param  ImageHandle[in]       The firmware allocated handle for the EFI image.
+  @param  SystemTable[in]       A pointer to the EFI System Table.
+
+  @retval EFI_SUCCESS           The entry point is executed successfully.
+**/
+EFI_STATUS
+EFIAPI
+ArmN1SdpEntryPoint (
+  IN EFI_HANDLE         ImageHandle,
+  IN EFI_SYSTEM_TABLE   *SystemTable
+  )
+{
+  EFI_STATUS                 Status;
+  EFI_RAM_DISK_PROTOCOL      *RamDisk;
+  EFI_DEVICE_PATH_PROTOCOL   *DevicePath;
+
+  Status = EFI_UNSUPPORTED;
+  if (FeaturePcdGet (PcdRamDiskSupported)) {
+    Status = gBS->LocateProtocol (&gEfiRamDiskProtocolGuid, NULL, (VOID**) &RamDisk);
+    if (EFI_ERROR (Status)) {
+      DEBUG ((DEBUG_ERROR, "%a: Couldn't find the RAM Disk protocol - %r\n", __FUNCTION__, Status));
+      return Status;
+    }
+
+    Status = RamDisk->Register (
+               (UINTN)PcdGet32(PcdRamDiskBase),
+               (UINTN)PcdGet32(PcdRamDiskSize),
+               &gEfiVirtualCdGuid,
+               NULL,
+               &DevicePath);
+    if (EFI_ERROR (Status)) {
+      DEBUG ((DEBUG_ERROR, "%a: Failed to register RAM Disk - %r\n", __FUNCTION__, Status));
+    }
+  }
+  return Status;
+}
-- 
2.17.1


  parent reply	other threads:[~2021-06-02  7:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02  7:15 [edk2-platforms][PATCH V1 0/4]N1Sdp ACPI table and configuration manager support Khasim Mohammed
2021-06-02  7:15 ` [edk2-platforms][PATCH V1 1/4] Silicon/ARM/NeoverseN1Soc: Add mem regions to support multi-chip usecase Khasim Mohammed
2021-06-02  7:15 ` Khasim Mohammed [this message]
2021-06-02  7:15 ` [edk2-platforms][PATCH V1 3/4] Platform/ARM/N1Sdp: Enable N1Sdp platform specific configurations Khasim Mohammed
2021-06-02  7:15 ` [edk2-platforms][PATCH V1 4/4] Platform/ARM/N1Sdp: Configuration Manager for N1Sdp Khasim Mohammed
2021-06-02  8:31 ` [edk2-platforms][PATCH V1 0/4]N1Sdp ACPI table and configuration manager support Sami Mujawar
  -- strict thread matches above, loose matches on Subject: below --
2021-06-02 12:46 Khasim Mohammed
2021-06-02 12:46 ` [edk2-platforms][PATCH V1 2/4] Platform/ARM/N1Sdp: Introduce platform DXE driver Khasim Mohammed
2021-06-02  5:01 [edk2-platforms][PATCH V1 0/4] N1Sdp ACPI table and configuration manager support Khasim Mohammed
2021-06-02  5:01 ` [edk2-platforms][PATCH V1 2/4] Platform/ARM/N1Sdp: Introduce platform DXE driver Khasim Mohammed

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