3 * Copyright (c) 2013-2015, ARM Limited. All rights reserved.
5 * This program and the accompanying materials
6 * are licensed and made available under the terms and conditions of the BSD License
7 * which accompanies this distribution. The full text of the license may be found at
8 * http://opensource.org/licenses/bsd-license.php
10 * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include "ArmJunoDxeInternal.h"
16 #include <Library/ArmShellCmdLib.h>
17 #include <Library/AcpiLib.h>
19 // This GUID must match the FILE_GUID in ArmPlatformPkg/ArmJunoPkg/AcpiTables/AcpiTables.inf
20 STATIC CONST EFI_GUID mJunoAcpiTableFile
= { 0xa1dd808e, 0x1e95, 0x4399, { 0xab, 0xc0, 0x65, 0x3c, 0x82, 0xe8, 0x53, 0x0c } };
25 IN EFI_HANDLE ImageHandle
,
26 IN EFI_SYSTEM_TABLE
*SystemTable
30 EFI_PHYSICAL_ADDRESS HypBase
;
31 CHAR16
*TextDevicePath
;
32 UINTN TextDevicePathSize
;
38 Status
= PciEmulationEntryPoint ();
39 if (EFI_ERROR (Status
)) {
44 // If a hypervisor has been declared then we need to make sure its region is protected at runtime
46 // Note: This code is only a workaround for our dummy hypervisor (ArmPkg/Extra/AArch64ToAArch32Shim/)
47 // that does not set up (yet) the stage 2 translation table to hide its own memory to EL1.
49 if (FixedPcdGet32 (PcdHypFvSize
) != 0) {
50 // Ensure the hypervisor region is strictly contained into a EFI_PAGE_SIZE-aligned region.
51 // The memory must be a multiple of EFI_PAGE_SIZE to ensure we do not reserve more memory than the hypervisor itself.
52 // A UEFI Runtime region size granularity cannot be smaller than EFI_PAGE_SIZE. If the hypervisor size is not rounded
53 // to this size then there is a risk some non-runtime memory could be visible to the OS view.
54 if (((FixedPcdGet32 (PcdHypFvSize
) & EFI_PAGE_MASK
) == 0) && ((FixedPcdGet32 (PcdHypFvBaseAddress
) & EFI_PAGE_MASK
) == 0)) {
55 // The memory needs to be declared because the DXE core marked it as reserved and removed it from the memory space
56 // as it contains the Firmware.
57 Status
= gDS
->AddMemorySpace (
58 EfiGcdMemoryTypeSystemMemory
,
59 FixedPcdGet32 (PcdHypFvBaseAddress
), FixedPcdGet32 (PcdHypFvSize
),
60 EFI_MEMORY_WB
| EFI_MEMORY_RUNTIME
62 if (!EFI_ERROR (Status
)) {
63 // We allocate the memory to ensure it is marked as runtime memory
64 HypBase
= FixedPcdGet32 (PcdHypFvBaseAddress
);
65 Status
= gBS
->AllocatePages (AllocateAddress
, EfiRuntimeServicesCode
,
66 EFI_SIZE_TO_PAGES (FixedPcdGet32 (PcdHypFvSize
)), &HypBase
);
69 // The hypervisor must be contained into a EFI_PAGE_SIZE-aligned region and its size must also be aligned
70 // on a EFI_PAGE_SIZE boundary (ie: 4KB).
71 Status
= EFI_UNSUPPORTED
;
72 ASSERT_EFI_ERROR (Status
);
75 if (EFI_ERROR (Status
)) {
80 // Install dynamic Shell command to run baremetal binaries.
81 Status
= ShellDynCmdRunAxfInstall (ImageHandle
);
82 if (EFI_ERROR (Status
)) {
83 DEBUG ((EFI_D_ERROR
, "ArmJunoDxe: Failed to install ShellDynCmdRunAxf\n"));
87 // Set up the device path to the FDT.
88 // We detect whether we are running on a Juno r0 or Juno r1 board at
89 // runtime by checking the value of the MIDR register.
92 Midr
= ArmReadMidr ();
93 CpuType
= (Midr
>> ARM_CPU_TYPE_SHIFT
) & ARM_CPU_TYPE_MASK
;
94 CpuRev
= Midr
& ARM_CPU_REV_MASK
;
95 TextDevicePath
= NULL
;
98 case ARM_CPU_TYPE_A53
:
99 if (CpuRev
== ARM_CPU_REV (0, 0)) {
100 TextDevicePath
= (CHAR16
*)FixedPcdGetPtr (PcdR0FdtDevicePath
);
101 } else if (CpuRev
== ARM_CPU_REV (0, 3)) {
102 TextDevicePath
= (CHAR16
*)FixedPcdGetPtr (PcdR1FdtDevicePath
);
106 case ARM_CPU_TYPE_A57
:
107 if (CpuRev
== ARM_CPU_REV (0, 0)) {
108 TextDevicePath
= (CHAR16
*)FixedPcdGetPtr (PcdR0FdtDevicePath
);
109 } else if (CpuRev
== ARM_CPU_REV (1, 1)) {
110 TextDevicePath
= (CHAR16
*)FixedPcdGetPtr (PcdR1FdtDevicePath
);
114 if (TextDevicePath
!= NULL
) {
115 TextDevicePathSize
= StrSize (TextDevicePath
);
116 Buffer
= PcdSetPtr (PcdFdtDevicePaths
, &TextDevicePathSize
, TextDevicePath
);
117 Status
= (Buffer
!= NULL
) ? EFI_SUCCESS
: EFI_BUFFER_TOO_SMALL
;
119 Status
= EFI_NOT_FOUND
;
122 if (EFI_ERROR (Status
)) {
125 "ArmJunoDxe: Setting of FDT device path in PcdFdtDevicePaths failed - %r\n", Status
)
130 // Try to install the ACPI Tables
131 Status
= LocateAndInstallAcpiFromFv (&mJunoAcpiTableFile
);