6f5872b1f4
This adds support for executing UEFI in a QEMU/mach-virt emulated environment. The following assumptions are made about the target: - DRAM base at 0x4000_0000, containing the device tree blob - DRAM size at least 1 MB - device tree uses 64-bit physical base addresses and sizes - ARM architected timer - Cortex-A15 CPU (if built for 32-bit) The following information is retrieved from the device tree: - PL011 UART base address - GIC base addresses - virtual timer interrupt - PL031 RTC base address - DRAM size, must be at least 128 MB - virtio MMIO transports - PSCI 0.2 availability (for reset and poweroff) The device tree image is relocated and installed as a configuration table so an EFI stub enabled kernel can be booted directly without the need for a bootloader. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Casadevall <michael.casadevall@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-By: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16141 6f19259b-4bc3-4df7-8a09-765794883524
80 lines
1.9 KiB
NASM
80 lines
1.9 KiB
NASM
//
|
|
// Copyright (c) 2011-2014, ARM Limited. All rights reserved.
|
|
// Copyright (c) 2014, Linaro 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 <AsmMacroIoLib.h>
|
|
#include <Base.h>
|
|
#include <Library/ArmLib.h>
|
|
#include <Library/PcdLib.h>
|
|
#include <AutoGen.h>
|
|
|
|
INCLUDE AsmMacroIoLib.inc
|
|
|
|
EXPORT ArmPlatformPeiBootAction
|
|
EXPORT ArmPlatformIsPrimaryCore
|
|
EXPORT ArmPlatformGetPrimaryCoreMpId
|
|
EXPORT ArmPlatformGetCorePosition
|
|
EXPORT ArmGetPhysAddrTop
|
|
|
|
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore
|
|
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
|
|
IMPORT _gPcd_FixedAtBuild_PcdCoreCount
|
|
|
|
AREA VirtHelper, CODE, READONLY
|
|
|
|
ArmPlatformPeiBootAction FUNCTION
|
|
bx lr
|
|
ENDFUNC
|
|
|
|
//UINTN
|
|
//ArmPlatformGetPrimaryCoreMpId (
|
|
// VOID
|
|
// );
|
|
ArmPlatformGetPrimaryCoreMpId FUNCTION
|
|
LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r0)
|
|
ldr r0, [r0]
|
|
bx lr
|
|
ENDFUNC
|
|
|
|
//UINTN
|
|
//ArmPlatformIsPrimaryCore (
|
|
// IN UINTN MpId
|
|
// );
|
|
ArmPlatformIsPrimaryCore FUNCTION
|
|
mov r0, #1
|
|
bx lr
|
|
ENDFUNC
|
|
|
|
//UINTN
|
|
//ArmPlatformGetCorePosition (
|
|
// IN UINTN MpId
|
|
// );
|
|
// With this function: CorePos = (ClusterId * 4) + CoreId
|
|
ArmPlatformGetCorePosition FUNCTION
|
|
and r1, r0, #ARM_CORE_MASK
|
|
and r0, r0, #ARM_CLUSTER_MASK
|
|
add r0, r1, r0, LSR #6
|
|
bx lr
|
|
ENDFUNC
|
|
|
|
//EFI_PHYSICAL_ADDRESS
|
|
//GetPhysAddrTop (
|
|
// VOID
|
|
// );
|
|
ArmGetPhysAddrTop FUNCTION
|
|
mov r0, #0x00000000
|
|
mov r1, #0x10000
|
|
bx lr
|
|
ENDFUNC
|
|
|
|
END
|