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ArmPlatformPkg/ArmJunoPkg: Create two default boot entries on first boot on Juno R1 

Juno R1 can run in two configurations:
- A57x2
- A57x2-A53x4

The Device Tree tell Linux which configuration has been selected.

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@16942 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin 2015-02-26 11:04:52 +00:00 committed by oliviermartin
parent 1ccc0fd73f
commit 6d60dfea87
2 changed files with 163 additions and 4 deletions
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161
ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.c
View File

@ -13,12 +13,90 @@
**/
#include "ArmJunoDxeInternal.h"
#include <Protocol/DevicePathFromText.h>
#include <Guid/GlobalVariable.h>
#include <Library/ArmShellCmdLib.h>
#include <Library/AcpiLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
// This GUID must match the FILE_GUID in ArmPlatformPkg/ArmJunoPkg/AcpiTables/AcpiTables.inf
STATIC CONST EFI_GUID mJunoAcpiTableFile = { 0xa1dd808e, 0x1e95, 0x4399, { 0xab, 0xc0, 0x65, 0x3c, 0x82, 0xe8, 0x53, 0x0c } };
/**
* Build and Set UEFI Variable Boot####
*
* @param BootVariableName Name of the UEFI Variable
* @param Attributes 'Attributes' for the Boot#### variable as per UEFI spec
* @param BootDescription Description of the Boot#### variable
* @param DevicePath EFI Device Path of the EFI Application to boot
* @param OptionalData Parameters to pass to the EFI application
* @param OptionalDataSize Size of the parameters to pass to the EFI application
*
* @return EFI_OUT_OF_RESOURCES A memory allocation failed
* @return Return value of RT.SetVariable
*/
STATIC
EFI_STATUS
BootOptionCreate (
IN CHAR16 BootVariableName[9],
IN UINT32 Attributes,
IN CHAR16* BootDescription,
IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,
IN UINT8* OptionalData,
IN UINTN OptionalDataSize
)
{
UINTN VariableSize;
UINT8 *Variable;
UINT8 *VariablePtr;
UINTN FilePathListLength;
UINTN BootDescriptionSize;
FilePathListLength = GetDevicePathSize (DevicePath);
BootDescriptionSize = StrSize (BootDescription);
// Each Boot#### variable is built as follow:
// UINT32 Attributes
// UINT16 FilePathListLength
// CHAR16* Description
// EFI_DEVICE_PATH_PROTOCOL FilePathList[]
// UINT8 OptionalData[]
VariableSize = sizeof (UINT32) + sizeof (UINT16) +
BootDescriptionSize + FilePathListLength + OptionalDataSize;
Variable = AllocateZeroPool (VariableSize);
if (Variable == NULL) {
return EFI_OUT_OF_RESOURCES;
}
// 'Attributes' field
*(UINT32*)Variable = Attributes;
// 'FilePathListLength' field
VariablePtr = Variable + sizeof (UINT32);
*(UINT16*)VariablePtr = FilePathListLength;
// 'Description' field
VariablePtr += sizeof (UINT16);
CopyMem (VariablePtr, BootDescription, BootDescriptionSize);
// 'FilePathList' field
VariablePtr += BootDescriptionSize;
CopyMem (VariablePtr, DevicePath, FilePathListLength);
// 'OptionalData' field
VariablePtr += FilePathListLength;
CopyMem (VariablePtr, OptionalData, OptionalDataSize);
return gRT->SetVariable (
BootVariableName,
&gEfiGlobalVariableGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
VariableSize, Variable
);
}
EFI_STATUS
EFIAPI
ArmJunoEntryPoint (
@ -34,6 +112,7 @@ ArmJunoEntryPoint (
UINT32 Midr;
UINT32 CpuType;
UINT32 CpuRev;
BOOLEAN IsJunoR1;
Status = PciEmulationEntryPoint ();
if (EFI_ERROR (Status)) {
@ -89,10 +168,11 @@ ArmJunoEntryPoint (
// runtime by checking the value of the MIDR register.
//
Midr = ArmReadMidr ();
CpuType = (Midr >> ARM_CPU_TYPE_SHIFT) & ARM_CPU_TYPE_MASK;
CpuRev = Midr & ARM_CPU_REV_MASK;
Midr = ArmReadMidr ();
CpuType = (Midr >> ARM_CPU_TYPE_SHIFT) & ARM_CPU_TYPE_MASK;
CpuRev = Midr & ARM_CPU_REV_MASK;
TextDevicePath = NULL;
IsJunoR1 = FALSE;
switch (CpuType) {
case ARM_CPU_TYPE_A53:
@ -100,6 +180,7 @@ ArmJunoEntryPoint (
TextDevicePath = (CHAR16*)FixedPcdGetPtr (PcdJunoR0FdtDevicePath);
} else if (CpuRev == ARM_CPU_REV (0, 3)) {
TextDevicePath = (CHAR16*)FixedPcdGetPtr (PcdJunoR1A57x2FdtDevicePath);
IsJunoR1 = TRUE;
}
break;
@ -108,6 +189,7 @@ ArmJunoEntryPoint (
TextDevicePath = (CHAR16*)FixedPcdGetPtr (PcdJunoR0FdtDevicePath);
} else if (CpuRev == ARM_CPU_REV (1, 1)) {
TextDevicePath = (CHAR16*)FixedPcdGetPtr (PcdJunoR1A57x2FdtDevicePath);
IsJunoR1 = TRUE;
}
}
@ -130,5 +212,78 @@ ArmJunoEntryPoint (
// Try to install the ACPI Tables
Status = LocateAndInstallAcpiFromFv (&mJunoAcpiTableFile);
//
// If Juno R1 and it is the first boot then default boot entries will be created
//
if (IsJunoR1) {
CONST CHAR16* ExtraBootArgument = L" dtb=juno-r1-ca57x2_ca53x4.dtb";
UINTN Size;
EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL* EfiDevicePathFromTextProtocol;
EFI_DEVICE_PATH* BootDevicePath;
CHAR16* DefaultBootArgument;
UINTN DefaultBootArgumentSize;
CHAR16* DefaultBootArgument2;
UINTN DefaultBootArgument2Size;
UINT16 BootOrder[2];
// Because the driver has a dependency on gEfiVariable(Write)ArchProtocolGuid (see [Depex]
// section of the INF file), we know we can safely access the UEFI Variable at that stage.
Size = 0;
Status = gRT->GetVariable (L"BootOrder", &gEfiGlobalVariableGuid, NULL, &Size, NULL);
if (Status == EFI_NOT_FOUND) {
Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
if (EFI_ERROR (Status)) {
// You must provide an implementation of DevicePathFromTextProtocol in your firmware (eg: DevicePathDxe)
DEBUG ((EFI_D_ERROR, "Error: Require DevicePathFromTextProtocol\n"));
return Status;
}
// We use the same default kernel
BootDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr (PcdDefaultBootDevicePath));
// Create the entry if the Default values are correct
if (BootDevicePath != NULL) {
DefaultBootArgument = (CHAR16*)PcdGetPtr (PcdDefaultBootArgument);
DefaultBootArgumentSize = StrSize (DefaultBootArgument);
DefaultBootArgument2Size = DefaultBootArgumentSize + StrSize (ExtraBootArgument);
DefaultBootArgument2 = AllocatePool (DefaultBootArgument2Size);
if (DefaultBootArgument2 == NULL) {
FreePool (BootDevicePath);
return EFI_OUT_OF_RESOURCES;
}
CopyMem (DefaultBootArgument2, DefaultBootArgument, DefaultBootArgumentSize);
CopyMem ((UINT8*)DefaultBootArgument2 + (StrLen (DefaultBootArgument2) * sizeof (CHAR16)), ExtraBootArgument, StrSize (ExtraBootArgument));
// Create Boot0001 environment variable
Status = BootOptionCreate (L"Boot0001", LOAD_OPTION_ACTIVE | LOAD_OPTION_CATEGORY_BOOT,
L"Linux with A57x2", BootDevicePath,
(UINT8*)DefaultBootArgument, DefaultBootArgumentSize);
ASSERT_EFI_ERROR (Status);
// Create Boot0002 environment variable
Status = BootOptionCreate (L"Boot0002", LOAD_OPTION_ACTIVE | LOAD_OPTION_CATEGORY_BOOT,
L"Linux with A57x2_A53x4", BootDevicePath,
(UINT8*)DefaultBootArgument2, DefaultBootArgument2Size);
ASSERT_EFI_ERROR (Status);
// Add the new Boot Index to the list
BootOrder[0] = 1; // Boot0001
BootOrder[1] = 2; // Boot0002
Status = gRT->SetVariable (
L"BootOrder",
&gEfiGlobalVariableGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
sizeof (BootOrder),
BootOrder
);
FreePool (BootDevicePath);
FreePool (DefaultBootArgument2);
} else {
Status = EFI_UNSUPPORTED;
}
}
}
return Status;
}

6
ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/ArmJunoDxe.inf
View File

@ -73,8 +73,12 @@
gArmJunoTokenSpaceGuid.PcdJunoR1A57x2FdtDevicePath
gArmJunoTokenSpaceGuid.PcdJunoR1A57x2A53x4FdtDevicePath
gArmPlatformTokenSpaceGuid.PcdDefaultBootDevicePath
gArmPlatformTokenSpaceGuid.PcdDefaultBootArgument
[Pcd]
gEmbeddedTokenSpaceGuid.PcdFdtDevicePaths
[Depex]
TRUE
# We depend on these protocols to create the default boot entries
gEfiVariableArchProtocolGuid AND gEfiVariableWriteArchProtocolGuid