diff options
| author | Olivier Martin <olivier.martin@arm.com> | 2014-10-27 15:28:07 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@Edk2> | 2014-10-27 15:28:07 +0000 |
| commit | 9f38945fea0905452e7680ed3ea554487a1f6c9b (patch) | |
| tree | 1def962698c15447981b00e30fe91f65809eb348 /ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c | |
| parent | cfdab71f926328bc82ac47f2d85bd823451af9d1 (diff) | |
| download | edk2-platforms-9f38945fea0905452e7680ed3ea554487a1f6c9b.tar.xz | |
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
Diffstat (limited to 'ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c')
| -rw-r--r-- | ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c | 81 |
1 files changed, 81 insertions, 0 deletions
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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