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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Jun 2023 15:17:50.0062 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3b298864-e065-4a50-2218-08db71a182c5 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00001507.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB8412 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1687274310808100001 Content-Type: text/plain; charset="utf-8" Add a special configuration (CONFIG_AARCH32_V8R) to setup the Cortex-R52 specifics. Cortex-R52 is an Arm-V8R AArch32 processor. Refer ARM DDI 0487I.a ID081822, G8-9647, G8.2.112 MIDR, bits[31:24] =3D 0x41 , Arm Ltd bits[23:20] =3D Implementation defined bits[19:16] =3D 0xf , Arch features are individually identified bits[15:4] =3D Implementation defined bits[3:0] =3D Implementation defined Thus, the processor id is 0x410f0000 and the processor id mask is 0xff0f0000 Also, there is no special initialization required for R52. Signed-off-by: Ayan Kumar Halder --- xen/arch/arm/Kconfig | 7 +++++++ xen/arch/arm/arm32/Makefile | 1 + xen/arch/arm/arm32/proc-v8.S | 32 ++++++++++++++++++++++++++++++++ 3 files changed, 40 insertions(+) create mode 100644 xen/arch/arm/arm32/proc-v8.S diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig index 61e581b8c2..c45753a2dd 100644 --- a/xen/arch/arm/Kconfig +++ b/xen/arch/arm/Kconfig @@ -3,6 +3,13 @@ config ARM_32 depends on "$(ARCH)" =3D "arm32" select ARCH_MAP_DOMAIN_PAGE =20 +config AARCH32_V8R + bool "AArch32 Arm V8R Support (UNSUPPORTED)" if UNSUPPORTED + def_bool n + depends on ARM_32 + help + This option enables Armv8-R profile for AArch32. + config ARM_64 def_bool y depends on !ARM_32 diff --git a/xen/arch/arm/arm32/Makefile b/xen/arch/arm/arm32/Makefile index 520fb42054..2ab808a7a8 100644 --- a/xen/arch/arm/arm32/Makefile +++ b/xen/arch/arm/arm32/Makefile @@ -8,6 +8,7 @@ obj-y +=3D head.o obj-y +=3D insn.o obj-$(CONFIG_LIVEPATCH) +=3D livepatch.o obj-y +=3D proc-v7.o proc-caxx.o +obj-$(CONFIG_AARCH32_V8R) +=3D proc-v8.o obj-y +=3D smpboot.o obj-y +=3D traps.o obj-y +=3D vfp.o diff --git a/xen/arch/arm/arm32/proc-v8.S b/xen/arch/arm/arm32/proc-v8.S new file mode 100644 index 0000000000..c5a566b165 --- /dev/null +++ b/xen/arch/arm/arm32/proc-v8.S @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * xen/arch/arm/arm32/proc-v8.S + * + * AArch32 V8R specific initialization + * + * Copyright (C) 2023, Advanced Micro Devices, Inc. All Rights Reserved. + */ + +#include +#include + +cr52_init: + mov pc, lr + + .section ".proc.info", #alloc + .type __v8_cr52_proc_info, #object +__v8_cr52_proc_info: + .long 0x410F0000 /* Cortex-R52 */ + .long 0xFF0F0000 /* Mask */ + .long cr52_init + .size __v8_cr52_proc_info, . - __v8_cr52_proc_info + + .section ".proc.info", #alloc + .type __v8_cr52_proc_info, #object + +/* + * Local variables: + * mode: ASM + * indent-tabs-mode: nil + * End: + */ --=20 2.25.1