diff options
author | Andrii Anisov <andrii_anisov@epam.com> | 2020-08-06 12:42:47 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2020-08-14 22:18:27 +0300 |
commit | 770a8eef3e27a5dc16e286cafa1a58e9201c9721 (patch) | |
tree | 16da67f0db3866775e5d78602e2e8d656ba16001 /board | |
parent | 365d88ac7ef562daedded3dacb922bd92ccc72cc (diff) | |
download | u-boot-770a8eef3e27a5dc16e286cafa1a58e9201c9721.tar.xz |
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>
Diffstat (limited to 'board')
-rw-r--r-- | board/xen/xenguest_arm64/Kconfig | 12 | ||||
-rw-r--r-- | board/xen/xenguest_arm64/MAINTAINERS | 7 | ||||
-rw-r--r-- | board/xen/xenguest_arm64/Makefile | 5 | ||||
-rw-r--r-- | board/xen/xenguest_arm64/xenguest_arm64.c | 152 |
4 files changed, 176 insertions, 0 deletions
diff --git a/board/xen/xenguest_arm64/Kconfig b/board/xen/xenguest_arm64/Kconfig new file mode 100644 index 0000000000..cc131ed5b9 --- /dev/null +++ b/board/xen/xenguest_arm64/Kconfig @@ -0,0 +1,12 @@ +if TARGET_XENGUEST_ARM64 + +config SYS_BOARD + default "xenguest_arm64" + +config SYS_VENDOR + default "xen" + +config SYS_CONFIG_NAME + default "xenguest_arm64" + +endif diff --git a/board/xen/xenguest_arm64/MAINTAINERS b/board/xen/xenguest_arm64/MAINTAINERS new file mode 100644 index 0000000000..787e9e0d0e --- /dev/null +++ b/board/xen/xenguest_arm64/MAINTAINERS @@ -0,0 +1,7 @@ +XEN GUEST FOR ARM64 +M: Andrii Anisov <andrii_anisov@epam.com> +S: Maintained +F: board/xen/xenguest_arm64/ +F: doc/board/xen/ +F: include/configs/xenguest_arm64.h +F: configs/xenguest_arm64_defconfig diff --git a/board/xen/xenguest_arm64/Makefile b/board/xen/xenguest_arm64/Makefile new file mode 100644 index 0000000000..1cf87a728f --- /dev/null +++ b/board/xen/xenguest_arm64/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# (C) Copyright 2020 EPAM Systems Inc. + +obj-y := xenguest_arm64.o diff --git a/board/xen/xenguest_arm64/xenguest_arm64.c b/board/xen/xenguest_arm64/xenguest_arm64.c new file mode 100644 index 0000000000..1d1e229085 --- /dev/null +++ b/board/xen/xenguest_arm64/xenguest_arm64.c @@ -0,0 +1,152 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) 2013 + * David Feng <fenghua@phytium.com.cn> + * Sharma Bhupesh <bhupesh.sharma@freescale.com> + * + * (C) 2020 EPAM Systems Inc + */ + +#include <common.h> +#include <cpu_func.h> +#include <dm.h> +#include <errno.h> +#include <malloc.h> + +#include <asm/io.h> +#include <asm/armv8/mmu.h> +#include <asm/xen.h> +#include <asm/xen/hypercall.h> + +#include <linux/compiler.h> + +DECLARE_GLOBAL_DATA_PTR; + +int board_init(void) +{ + return 0; +} + +/* + * Use fdt provided by Xen: according to + * https://www.kernel.org/doc/Documentation/arm64/booting.txt + * x0 is the physical address of the device tree blob (dtb) in system RAM. + * This is stored in rom_pointer during low level init. + */ +void *board_fdt_blob_setup(void) +{ + if (fdt_magic(rom_pointer[0]) != FDT_MAGIC) + return NULL; + return (void *)rom_pointer[0]; +} + +#define MAX_MEM_MAP_REGIONS 5 +static struct mm_region xen_mem_map[MAX_MEM_MAP_REGIONS]; +struct mm_region *mem_map = xen_mem_map; + +static int get_next_memory_node(const void *blob, int mem) +{ + do { + mem = fdt_node_offset_by_prop_value(blob, mem, + "device_type", "memory", 7); + } while (!fdtdec_get_is_enabled(blob, mem)); + + return mem; +} + +static int setup_mem_map(void) +{ + int i, ret, mem, reg = 0; + struct fdt_resource res; + const void *blob = gd->fdt_blob; + + mem = get_next_memory_node(blob, -1); + if (mem < 0) { + printf("%s: Missing /memory node\n", __func__); + return -EINVAL; + } + + for (i = 0; i < MAX_MEM_MAP_REGIONS; i++) { + ret = fdt_get_resource(blob, mem, "reg", reg++, &res); + if (ret == -FDT_ERR_NOTFOUND) { + reg = 0; + mem = get_next_memory_node(blob, mem); + if (mem == -FDT_ERR_NOTFOUND) + break; + + ret = fdt_get_resource(blob, mem, "reg", reg++, &res); + if (ret == -FDT_ERR_NOTFOUND) + break; + } + if (ret != 0) { + printf("No reg property for memory node\n"); + return -EINVAL; + } + + xen_mem_map[i].virt = (phys_addr_t)res.start; + xen_mem_map[i].phys = (phys_addr_t)res.start; + xen_mem_map[i].size = (phys_size_t)(res.end - res.start + 1); + xen_mem_map[i].attrs = (PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE); + } + return 0; +} + +void enable_caches(void) +{ + /* Re-setup the memory map as BSS gets cleared after relocation. */ + setup_mem_map(); + icache_enable(); + dcache_enable(); +} + +/* Read memory settings from the Xen provided device tree. */ +int dram_init(void) +{ + int ret; + + ret = fdtdec_setup_mem_size_base(); + if (ret < 0) + return ret; + /* Setup memory map, so MMU page table size can be estimated. */ + return setup_mem_map(); +} + +int dram_init_banksize(void) +{ + return fdtdec_setup_memory_banksize(); +} + +/* + * Board specific reset that is system reset. + */ +void reset_cpu(ulong addr) +{ +} + +int ft_system_setup(void *blob, struct bd_info *bd) +{ + return 0; +} + +int ft_board_setup(void *blob, struct bd_info *bd) +{ + return 0; +} + +int board_early_init_f(void) +{ + return 0; +} + +int print_cpuinfo(void) +{ + printf("Xen virtual CPU\n"); + return 0; +} + +__weak struct serial_device *default_serial_console(void) +{ + return NULL; +} + |