This adds ARM support to the ArmVirtXen platform. As is the case for
AARCH64, the ARM port adheres to the ARM Linux boot protocol, i.e.,
it expects the address of a DTB describing the platform to be passed
in r2, and relocates itself at runtime to the actual load time memory
offset.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
---
ArmVirtPkg/ArmVirtXen.dsc | 7 +++----
ArmVirtPkg/ArmVirtXen.fdf | 21 ++++++++++++++++++--
2 files changed, 22 insertions(+), 6 deletions(-)
diff --git a/ArmVirtPkg/ArmVirtXen.dsc b/ArmVirtPkg/ArmVirtXen.dsc
index ac37cd2a4345..4a40987bd3e7 100644
--- a/ArmVirtPkg/ArmVirtXen.dsc
+++ b/ArmVirtPkg/ArmVirtXen.dsc
@@ -23,7 +23,7 @@ [Defines]
PLATFORM_VERSION = 0.1
DSC_SPECIFICATION = 0x00010005
OUTPUT_DIRECTORY = Build/ArmVirtXen-$(ARCH)
- SUPPORTED_ARCHITECTURES = AARCH64
+ SUPPORTED_ARCHITECTURES = AARCH64|ARM
BUILD_TARGETS = DEBUG|RELEASE
SKUID_IDENTIFIER = DEFAULT
FLASH_DEFINITION = ArmVirtPkg/ArmVirtXen.fdf
@@ -64,10 +64,10 @@ [LibraryClasses.common.UEFI_DRIVER]
UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
[LibraryClasses.AARCH64.SEC]
- ArmLib|ArmPkg/Library/ArmLib/AArch64/AArch64LibSec.inf
+ ArmLib|ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf
[LibraryClasses.ARM.SEC]
- ArmLib|ArmPkg/Library/ArmLib/ArmV7/ArmV7LibSec.inf
+ ArmLib|ArmPkg/Library/ArmLib/ArmV7/ArmV7LibPrePi.inf
[BuildOptions]
RVCT:*_*_ARM_PLATFORM_FLAGS == --cpu Cortex-A15
-I$(WORKSPACE)/ArmVirtPkg/Include
@@ -166,7 +166,6 @@ [Components.common]
PrePiLib|EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
HobLib|EmbeddedPkg/Library/PrePiHobLib/PrePiHobLib.inf
PrePiHobListPointerLib|ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointerLib.inf
- ArmLib|ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf
MemoryAllocationLib|EmbeddedPkg/Library/PrePiMemoryAllocationLib/PrePiMemoryAllocationLib.inf
ArmPlatformGlobalVariableLib|ArmPlatformPkg/Library/ArmPlatformGlobalVariableLib/PrePi/PrePiArmPlatformGlobalVariableLib.inf
SerialPortLib|OvmfPkg/Library/XenConsoleSerialPortLib/XenConsoleSerialPortLib.inf
diff --git a/ArmVirtPkg/ArmVirtXen.fdf b/ArmVirtPkg/ArmVirtXen.fdf
index 97cab4b058f2..f955f7860a6d 100644
--- a/ArmVirtPkg/ArmVirtXen.fdf
+++ b/ArmVirtPkg/ArmVirtXen.fdf
@@ -52,11 +52,12 @@ [FD.XEN_EFI]
#
# Implement the Linux kernel header layout so that the Xen loader will identify
-# it as something bootable, and execute it with a FDT pointer in x0. This area
-# will be reused to store a copy of the FDT so round it up to 8 KB.
+# it as something bootable, and execute it with a FDT pointer in x0 or r2.
+# This area will be reused to store a copy of the FDT so round it up to 8 KB.
#
0x00000000|0x00002000
DATA = {
+!if $(ARCH) == AARCH64
0x01, 0x00, 0x00, 0x10, # code0: adr x1, .
0xff, 0x07, 0x00, 0x14, # code1: b 0x2000
0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, # text_offset: 512 KB
@@ -67,6 +68,22 @@ [FD.XEN_EFI]
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, # res4
0x41, 0x52, 0x4d, 0x64, # magic: "ARM\x64"
0x00, 0x00, 0x00, 0x00 # res5
+!else
+ 0x08, 0x10, 0x4f, 0xe2, # adr r1, .
+ 0x02, 0x00, 0xa0, 0xe1, # mov r0, r2 (DTB)
+ 0x00, 0x00, 0xa0, 0xe1, # nop
+ 0x00, 0x00, 0xa0, 0xe1, # nop
+ 0x00, 0x00, 0xa0, 0xe1, # nop
+ 0x00, 0x00, 0xa0, 0xe1, # nop
+ 0x00, 0x00, 0xa0, 0xe1, # nop
+ 0x00, 0x00, 0xa0, 0xe1, # nop
+
+ 0xf6, 0x07, 0x00, 0xea, # b 0x2000
+ 0x18, 0x28, 0x6f, 0x01, # magic
+ 0x00, 0x00, 0x00, 0x00, # start
+ 0x00, 0x00, 0x20, 0x00, # image size: 2 MB
+ 0x01, 0x02, 0x03, 0x04 # endiannness flag
+!endif
}
0x00002000|0x001fe000
--
1.9.1
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