From 9f38945fea0905452e7680ed3ea554487a1f6c9b Mon Sep 17 00:00:00 2001
From: Olivier Martin <olivier.martin@arm.com>
Date: Mon, 27 Oct 2014 15:28:07 +0000
Subject: ArmPlatformPkg/ArmJunoPkg: Added Juno development board support

ARM 64bit development platform.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16249 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c     | 81 ++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c

(limited to 'ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c')

diff --git a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c
new file mode 100644
index 0000000000..70d632927a
--- /dev/null
+++ b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c
@@ -0,0 +1,81 @@
+/** @file
+*
+*  Copyright (c) 2013-2014, ARM Limited. All rights reserved.
+*
+*  This program and the accompanying materials
+*  are licensed and made available under the terms and conditions of the BSD License
+*  which accompanies this distribution.  The full text of the license may be found at
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+#include "ArmJunoDxeInternal.h"
+#include <Library/ArmShellCmdLib.h>
+
+EFI_STATUS
+EFIAPI
+ArmJunoEntryPoint (
+  IN EFI_HANDLE         ImageHandle,
+  IN EFI_SYSTEM_TABLE   *SystemTable
+  )
+{
+  EFI_STATUS           Status;
+  EFI_PHYSICAL_ADDRESS HypBase;
+
+  Status = PciEmulationEntryPoint ();
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  //
+  // If a hypervisor has been declared then we need to make sure its region is protected at runtime
+  //
+  // Note: This code is only a workaround for our dummy hypervisor (ArmPkg/Extra/AArch64ToAArch32Shim/)
+  //       that does not set up (yet) the stage 2 translation table to hide its own memory to EL1.
+  //
+  if (FixedPcdGet32 (PcdHypFvSize) != 0) {
+    // Ensure the hypervisor region is strictly contained into a EFI_PAGE_SIZE-aligned region.
+    // The memory must be a multiple of EFI_PAGE_SIZE to ensure we do not reserve more memory than the hypervisor itself.
+    // A UEFI Runtime region size granularity cannot be smaller than EFI_PAGE_SIZE. If the hypervisor size is not rounded
+    // to this size then there is a risk some non-runtime memory could be visible to the OS view.
+    if (((FixedPcdGet32 (PcdHypFvSize) & EFI_PAGE_MASK) == 0) && ((FixedPcdGet32 (PcdHypFvBaseAddress) & EFI_PAGE_MASK) == 0)) {
+      // The memory needs to be declared because the DXE core marked it as reserved and removed it from the memory space
+      // as it contains the Firmware.
+      Status = gDS->AddMemorySpace (
+          EfiGcdMemoryTypeSystemMemory,
+          FixedPcdGet32 (PcdHypFvBaseAddress), FixedPcdGet32 (PcdHypFvSize),
+          EFI_MEMORY_WB | EFI_MEMORY_RUNTIME
+          );
+      if (!EFI_ERROR (Status)) {
+        // We allocate the memory to ensure it is marked as runtime memory
+        HypBase = FixedPcdGet32 (PcdHypFvBaseAddress);
+        Status = gBS->AllocatePages (AllocateAddress, EfiRuntimeServicesCode,
+                                     EFI_SIZE_TO_PAGES (FixedPcdGet32 (PcdHypFvSize)), &HypBase);
+      }
+    } else {
+      // The hypervisor must be contained into a EFI_PAGE_SIZE-aligned region and its size must also be aligned
+      // on a EFI_PAGE_SIZE boundary (ie: 4KB).
+      Status = EFI_UNSUPPORTED;
+      ASSERT_EFI_ERROR (Status);
+    }
+
+    if (EFI_ERROR (Status)) {
+      return Status;
+    }
+  }
+
+  // Install dynamic Shell command to run baremetal binaries.
+  Status = ShellDynCmdRunAxfInstall (ImageHandle);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((EFI_D_ERROR, "ArmJunoDxe: Failed to install ShellDynCmdRunAxf\n"));
+  }
+
+  // Try to install the Flat Device Tree (FDT). This function actually installs the
+  // UEFI Driver Binding Protocol.
+  Status = JunoFdtInstall (ImageHandle);
+
+  return Status;
+}
-- 
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