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1 | /** @file\r | |
2 | *\r | |
3 | * Copyright (c) 2013-2014, ARM Limited. All rights reserved.\r | |
4 | *\r | |
5 | * This program and the accompanying materials\r | |
6 | * are licensed and made available under the terms and conditions of the BSD License\r | |
7 | * which accompanies this distribution. The full text of the license may be found at\r | |
8 | * http://opensource.org/licenses/bsd-license.php\r | |
9 | *\r | |
10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | *\r | |
13 | **/\r | |
14 | \r | |
15 | #include "ArmJunoDxeInternal.h"\r | |
16 | #include <Library/ArmShellCmdLib.h>\r | |
17 | \r | |
18 | EFI_STATUS\r | |
19 | EFIAPI\r | |
20 | ArmJunoEntryPoint (\r | |
21 | IN EFI_HANDLE ImageHandle,\r | |
22 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
23 | )\r | |
24 | {\r | |
25 | EFI_STATUS Status;\r | |
26 | EFI_PHYSICAL_ADDRESS HypBase;\r | |
27 | \r | |
28 | Status = PciEmulationEntryPoint ();\r | |
29 | if (EFI_ERROR (Status)) {\r | |
30 | return Status;\r | |
31 | }\r | |
32 | \r | |
33 | //\r | |
34 | // If a hypervisor has been declared then we need to make sure its region is protected at runtime\r | |
35 | //\r | |
36 | // Note: This code is only a workaround for our dummy hypervisor (ArmPkg/Extra/AArch64ToAArch32Shim/)\r | |
37 | // that does not set up (yet) the stage 2 translation table to hide its own memory to EL1.\r | |
38 | //\r | |
39 | if (FixedPcdGet32 (PcdHypFvSize) != 0) {\r | |
40 | // Ensure the hypervisor region is strictly contained into a EFI_PAGE_SIZE-aligned region.\r | |
41 | // The memory must be a multiple of EFI_PAGE_SIZE to ensure we do not reserve more memory than the hypervisor itself.\r | |
42 | // A UEFI Runtime region size granularity cannot be smaller than EFI_PAGE_SIZE. If the hypervisor size is not rounded\r | |
43 | // to this size then there is a risk some non-runtime memory could be visible to the OS view.\r | |
44 | if (((FixedPcdGet32 (PcdHypFvSize) & EFI_PAGE_MASK) == 0) && ((FixedPcdGet32 (PcdHypFvBaseAddress) & EFI_PAGE_MASK) == 0)) {\r | |
45 | // The memory needs to be declared because the DXE core marked it as reserved and removed it from the memory space\r | |
46 | // as it contains the Firmware.\r | |
47 | Status = gDS->AddMemorySpace (\r | |
48 | EfiGcdMemoryTypeSystemMemory,\r | |
49 | FixedPcdGet32 (PcdHypFvBaseAddress), FixedPcdGet32 (PcdHypFvSize),\r | |
50 | EFI_MEMORY_WB | EFI_MEMORY_RUNTIME\r | |
51 | );\r | |
52 | if (!EFI_ERROR (Status)) {\r | |
53 | // We allocate the memory to ensure it is marked as runtime memory\r | |
54 | HypBase = FixedPcdGet32 (PcdHypFvBaseAddress);\r | |
55 | Status = gBS->AllocatePages (AllocateAddress, EfiRuntimeServicesCode,\r | |
56 | EFI_SIZE_TO_PAGES (FixedPcdGet32 (PcdHypFvSize)), &HypBase);\r | |
57 | }\r | |
58 | } else {\r | |
59 | // The hypervisor must be contained into a EFI_PAGE_SIZE-aligned region and its size must also be aligned\r | |
60 | // on a EFI_PAGE_SIZE boundary (ie: 4KB).\r | |
61 | Status = EFI_UNSUPPORTED;\r | |
62 | ASSERT_EFI_ERROR (Status);\r | |
63 | }\r | |
64 | \r | |
65 | if (EFI_ERROR (Status)) {\r | |
66 | return Status;\r | |
67 | }\r | |
68 | }\r | |
69 | \r | |
70 | // Install dynamic Shell command to run baremetal binaries.\r | |
71 | Status = ShellDynCmdRunAxfInstall (ImageHandle);\r | |
72 | if (EFI_ERROR (Status)) {\r | |
73 | DEBUG ((EFI_D_ERROR, "ArmJunoDxe: Failed to install ShellDynCmdRunAxf\n"));\r | |
74 | }\r | |
75 | \r | |
76 | // Try to install the Flat Device Tree (FDT). This function actually installs the\r | |
77 | // UEFI Driver Binding Protocol.\r | |
78 | Status = JunoFdtInstall (ImageHandle);\r | |
79 | \r | |
80 | return Status;\r | |
81 | }\r |