board: Introduce xenguest_arm64 board
Introduce a minimal Xen guest board running as a virtual machine under Xen Project's hypervisor [1], [2]. Part of the code is ported from Xen mini-os and also uses work initially done by different authors from NXP: please see relevant files for their copyrights. [1] https://xenbits.xen.org [2] https://wiki.xenproject.org/ Signed-off-by: Andrii Anisov <andrii_anisov@epam.com> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
This commit is contained in:
Andrii Anisov
Tom Rini
parent
365d88ac7e
commit
770a8eef3e
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@ -1749,6 +1749,12 @@ config TARGET_PRESIDIO_ASIC
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bool "Support Cortina Presidio ASIC Platform"
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select ARM64
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config TARGET_XENGUEST_ARM64
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bool "Xen guest ARM64"
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select ARM64
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select XEN
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select OF_CONTROL
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select LINUX_KERNEL_IMAGE_HEADER
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endchoice
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config ARCH_SUPPORT_TFABOOT
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@ -1955,6 +1961,7 @@ source "board/xilinx/Kconfig"
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source "board/xilinx/zynq/Kconfig"
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source "board/xilinx/zynqmp/Kconfig"
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source "board/phytium/durian/Kconfig"
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source "board/xen/xenguest_arm64/Kconfig"
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source "arch/arm/Kconfig.debug"
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@ -40,3 +40,4 @@ obj-$(CONFIG_TARGET_HIKEY) += hisilicon/
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obj-$(CONFIG_ARMV8_PSCI) += psci.o
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obj-$(CONFIG_ARCH_SUNXI) += lowlevel_init.o
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obj-$(CONFIG_TARGET_BCMNS3) += bcmns3/
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obj-$(CONFIG_XEN) += xen/
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@ -0,0 +1,6 @@
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# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) 2018 NXP
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# (C) 2020 EPAM Systems Inc.
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obj-y += lowlevel_init.o hypercall.o
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@ -0,0 +1,79 @@
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/* SPDX-License-Identifier: GPL-2.0
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*
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* hypercall.S
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*
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* Xen hypercall wrappers
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*
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* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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/*
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* The Xen hypercall calling convention is very similar to the procedure
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* call standard for the ARM 64-bit architecture: the first parameter is
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* passed in x0, the second in x1, the third in x2, the fourth in x3 and
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* the fifth in x4.
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*
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* The hypercall number is passed in x16.
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*
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* The return value is in x0.
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*
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* The hvc ISS is required to be 0xEA1, that is the Xen specific ARM
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* hypercall tag.
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*
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* Parameter structs passed to hypercalls are laid out according to
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* the ARM 64-bit EABI standard.
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*/
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#include <xen/interface/xen.h>
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#define XEN_HYPERCALL_TAG 0xEA1
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#define HYPERCALL_SIMPLE(hypercall) \
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.globl HYPERVISOR_##hypercall; \
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.align 4,0x90; \
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HYPERVISOR_##hypercall: \
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mov x16, #__HYPERVISOR_##hypercall; \
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hvc XEN_HYPERCALL_TAG; \
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ret; \
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#define HYPERCALL0 HYPERCALL_SIMPLE
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#define HYPERCALL1 HYPERCALL_SIMPLE
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#define HYPERCALL2 HYPERCALL_SIMPLE
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#define HYPERCALL3 HYPERCALL_SIMPLE
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#define HYPERCALL4 HYPERCALL_SIMPLE
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#define HYPERCALL5 HYPERCALL_SIMPLE
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.text
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HYPERCALL2(xen_version);
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HYPERCALL3(console_io);
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HYPERCALL3(grant_table_op);
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HYPERCALL2(sched_op);
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HYPERCALL2(event_channel_op);
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HYPERCALL2(hvm_op);
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HYPERCALL2(memory_op);
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@ -0,0 +1,33 @@
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/* SPDX-License-Identifier: GPL-2.0+
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*
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* (C) 2017 NXP
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* (C) 2020 EPAM Systems Inc.
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*/
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#include <config.h>
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.align 8
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.global rom_pointer
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rom_pointer:
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.space 32
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/*
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* Routine: save_boot_params (called after reset from start.S)
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*/
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.global save_boot_params
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save_boot_params:
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/* The firmware provided ATAG/FDT address can be found in r2/x0 */
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adr x1, rom_pointer
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stp x0, x2, [x1], #16
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stp x3, x4, [x1], #16
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/* Returns */
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b save_boot_params_ret
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.global restore_boot_params
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restore_boot_params:
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adr x1, rom_pointer
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ldp x0, x2, [x1], #16
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ldp x3, x4, [x1], #16
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ret
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@ -0,0 +1,7 @@
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/* SPDX-License-Identifier: GPL-2.0+
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*
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* (C) 2020 EPAM Systems Inc.
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*/
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extern unsigned long rom_pointer[];
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@ -0,0 +1,22 @@
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/* SPDX-License-Identifier: GPL-2.0
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*
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* hypercall.h
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*
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* Linux-specific hypervisor handling.
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*
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* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
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*/
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#ifndef _ASM_ARM_XEN_HYPERCALL_H
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#define _ASM_ARM_XEN_HYPERCALL_H
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#include <xen/interface/xen.h>
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int HYPERVISOR_xen_version(int cmd, void *arg);
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int HYPERVISOR_console_io(int cmd, int count, char *str);
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int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
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int HYPERVISOR_sched_op(int cmd, void *arg);
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int HYPERVISOR_event_channel_op(int cmd, void *arg);
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unsigned long HYPERVISOR_hvm_op(int op, void *arg);
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int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
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#endif /* _ASM_ARM_XEN_HYPERCALL_H */
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@ -0,0 +1,12 @@
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if TARGET_XENGUEST_ARM64
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config SYS_BOARD
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default "xenguest_arm64"
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config SYS_VENDOR
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default "xen"
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config SYS_CONFIG_NAME
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default "xenguest_arm64"
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endif
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@ -0,0 +1,7 @@
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XEN GUEST FOR ARM64
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M: Andrii Anisov <andrii_anisov@epam.com>
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S: Maintained
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F: board/xen/xenguest_arm64/
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F: doc/board/xen/
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F: include/configs/xenguest_arm64.h
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F: configs/xenguest_arm64_defconfig
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@ -0,0 +1,5 @@
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# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) Copyright 2020 EPAM Systems Inc.
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obj-y := xenguest_arm64.o
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@ -0,0 +1,152 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) 2013
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* David Feng <fenghua@phytium.com.cn>
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* Sharma Bhupesh <bhupesh.sharma@freescale.com>
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*
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* (C) 2020 EPAM Systems Inc
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <errno.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include <asm/armv8/mmu.h>
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#include <asm/xen.h>
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#include <asm/xen/hypercall.h>
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#include <linux/compiler.h>
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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return 0;
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}
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/*
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* Use fdt provided by Xen: according to
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* https://www.kernel.org/doc/Documentation/arm64/booting.txt
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* x0 is the physical address of the device tree blob (dtb) in system RAM.
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* This is stored in rom_pointer during low level init.
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*/
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void *board_fdt_blob_setup(void)
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{
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if (fdt_magic(rom_pointer[0]) != FDT_MAGIC)
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return NULL;
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return (void *)rom_pointer[0];
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}
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#define MAX_MEM_MAP_REGIONS 5
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static struct mm_region xen_mem_map[MAX_MEM_MAP_REGIONS];
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struct mm_region *mem_map = xen_mem_map;
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static int get_next_memory_node(const void *blob, int mem)
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{
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do {
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mem = fdt_node_offset_by_prop_value(blob, mem,
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"device_type", "memory", 7);
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} while (!fdtdec_get_is_enabled(blob, mem));
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return mem;
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}
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static int setup_mem_map(void)
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{
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int i, ret, mem, reg = 0;
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struct fdt_resource res;
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const void *blob = gd->fdt_blob;
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mem = get_next_memory_node(blob, -1);
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if (mem < 0) {
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printf("%s: Missing /memory node\n", __func__);
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return -EINVAL;
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}
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for (i = 0; i < MAX_MEM_MAP_REGIONS; i++) {
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ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
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if (ret == -FDT_ERR_NOTFOUND) {
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reg = 0;
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mem = get_next_memory_node(blob, mem);
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if (mem == -FDT_ERR_NOTFOUND)
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break;
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ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
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if (ret == -FDT_ERR_NOTFOUND)
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break;
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}
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if (ret != 0) {
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printf("No reg property for memory node\n");
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return -EINVAL;
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}
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xen_mem_map[i].virt = (phys_addr_t)res.start;
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xen_mem_map[i].phys = (phys_addr_t)res.start;
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xen_mem_map[i].size = (phys_size_t)(res.end - res.start + 1);
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xen_mem_map[i].attrs = (PTE_BLOCK_MEMTYPE(MT_NORMAL) |
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PTE_BLOCK_INNER_SHARE);
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}
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return 0;
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}
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void enable_caches(void)
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{
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/* Re-setup the memory map as BSS gets cleared after relocation. */
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setup_mem_map();
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icache_enable();
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dcache_enable();
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}
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/* Read memory settings from the Xen provided device tree. */
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int dram_init(void)
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{
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int ret;
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ret = fdtdec_setup_mem_size_base();
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if (ret < 0)
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return ret;
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/* Setup memory map, so MMU page table size can be estimated. */
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return setup_mem_map();
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}
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int dram_init_banksize(void)
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{
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return fdtdec_setup_memory_banksize();
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}
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/*
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* Board specific reset that is system reset.
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*/
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void reset_cpu(ulong addr)
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{
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}
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int ft_system_setup(void *blob, struct bd_info *bd)
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{
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return 0;
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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return 0;
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}
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int board_early_init_f(void)
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{
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return 0;
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}
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int print_cpuinfo(void)
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{
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printf("Xen virtual CPU\n");
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return 0;
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}
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__weak struct serial_device *default_serial_console(void)
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{
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return NULL;
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}
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@ -0,0 +1,56 @@
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CONFIG_ARM=y
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CONFIG_POSITION_INDEPENDENT=y
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CONFIG_SYS_TEXT_BASE=0x40080000
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CONFIG_SYS_MALLOC_F_LEN=0x2000
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CONFIG_IDENT_STRING=" xenguest"
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CONFIG_TARGET_XENGUEST_ARM64=y
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CONFIG_BOOTDELAY=10
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CONFIG_SYS_PROMPT="xenguest# "
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CONFIG_CMD_NET=n
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CONFIG_CMD_BDI=n
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CONFIG_CMD_BOOTD=n
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CONFIG_CMD_BOOTEFI=n
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CONFIG_CMD_BOOTEFI_HELLO_COMPILE=n
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CONFIG_CMD_ELF=n
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CONFIG_CMD_GO=n
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CONFIG_CMD_RUN=n
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CONFIG_CMD_IMI=n
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CONFIG_CMD_IMLS=n
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CONFIG_CMD_XIMG=n
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CONFIG_CMD_EXPORTENV=n
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CONFIG_CMD_IMPORTENV=n
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CONFIG_CMD_EDITENV=n
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CONFIG_CMD_ENV_EXISTS=n
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CONFIG_CMD_MEMORY=y
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CONFIG_CMD_CRC32=n
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CONFIG_CMD_DM=n
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CONFIG_CMD_LOADB=n
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CONFIG_CMD_LOADS=n
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CONFIG_CMD_FLASH=n
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CONFIG_CMD_GPT=n
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CONFIG_CMD_FPGA=n
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CONFIG_CMD_ECHO=n
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CONFIG_CMD_ITEST=n
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CONFIG_CMD_SOURCE=n
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CONFIG_CMD_SETEXPR=n
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CONFIG_CMD_MISC=n
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CONFIG_CMD_UNZIP=n
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CONFIG_CMD_LZMADEC=n
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CONFIG_CMD_SAVEENV=n
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CONFIG_CMD_UMS=n
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#CONFIG_USB=n
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# CONFIG_ISO_PARTITION is not set
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#CONFIG_EFI_PARTITION=y
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# CONFIG_EFI_LOADER is not set
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CONFIG_DM=y
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# CONFIG_MMC is not set
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# CONFIG_DM_SERIAL is not set
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# CONFIG_REQUIRE_SERIAL_CONSOLE is not set
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CONFIG_OF_BOARD=y
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CONFIG_OF_LIBFDT=y
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@ -0,0 +1,44 @@
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/* SPDX-License-Identifier: GPL-2.0+
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*
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* (C) Copyright 2020 EPAM Systemc Inc.
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*/
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#ifndef __XENGUEST_ARM64_H
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#define __XENGUEST_ARM64_H
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#endif
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#define CONFIG_BOARD_EARLY_INIT_F
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#define CONFIG_EXTRA_ENV_SETTINGS
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#undef CONFIG_NR_DRAM_BANKS
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#undef CONFIG_SYS_SDRAM_BASE
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#define CONFIG_NR_DRAM_BANKS 1
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/*
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* This can be any arbitrary address as we are using PIE, but
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* please note, that CONFIG_SYS_TEXT_BASE must match the below.
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*/
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#define CONFIG_SYS_LOAD_ADDR 0x40000000
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#define CONFIG_LNX_KRNL_IMG_TEXT_OFFSET_BASE CONFIG_SYS_LOAD_ADDR
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/* Size of malloc() pool */
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#define CONFIG_SYS_MALLOC_LEN (32 * 1024 * 1024)
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/* Monitor Command Prompt */
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#define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
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#define CONFIG_SYS_CBSIZE 1024
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#define CONFIG_SYS_MAXARGS 64
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#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
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#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
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sizeof(CONFIG_SYS_PROMPT) + 16)
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#define CONFIG_OF_SYSTEM_SETUP
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#define CONFIG_CMDLINE_TAG 1
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#define CONFIG_INITRD_TAG 1
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#endif /* __XENGUEST_ARM64_H */
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