projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4df7363e | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 8cee3974 | 2 | #include <linux/acpi.h> |
| 9c11112c | 3 | #include <linux/export.h> |
| 8cee3974 | 4 | |
| a43fb7da MW |
5 | #include <xen/hvc-console.h> |
| 6 | ||
| 8cee3974 MW |
7 | #include <asm/io_apic.h> |
| 8 | #include <asm/hypervisor.h> | |
| a43fb7da | 9 | #include <asm/e820/api.h> |
| 8cee3974 MW |
10 | |
| 11 | #include <xen/xen.h> | |
| 12 | #include <asm/xen/interface.h> | |
| 13 | #include <asm/xen/hypercall.h> | |
| 4df7363e | 14 | |
| a43fb7da MW |
15 | #include <xen/interface/memory.h> |
| 16 | ||
| 72813bfb RPM |
17 | #include "xen-ops.h" |
| 18 | ||
| 4df7363e MW |
19 | /* |
| 20 | * PVH variables. | |
| 21 | * | |
| 9c11112c | 22 | * The variable xen_pvh needs to live in a data segment since it is used |
| 4df7363e MW |
23 | * after startup_{32|64} is invoked, which will clear the .bss segment. |
| 24 | */ | |
| 9c11112c JB |
25 | bool __ro_after_init xen_pvh; |
| 26 | EXPORT_SYMBOL_GPL(xen_pvh); | |
| 8cee3974 | 27 | |
| 72813bfb | 28 | void __init xen_pvh_init(struct boot_params *boot_params) |
| 8cee3974 MW |
29 | { |
| 30 | u32 msr; | |
| 31 | u64 pfn; | |
| 32 | ||
| 33 | xen_pvh = 1; | |
| c9f804d6 | 34 | xen_domain_type = XEN_HVM_DOMAIN; |
| 8cee3974 MW |
35 | xen_start_flags = pvh_start_info.flags; |
| 36 | ||
| 37 | msr = cpuid_ebx(xen_cpuid_base() + 2); | |
| 38 | pfn = __pa(hypercall_page); | |
| 39 | wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); | |
| 72813bfb | 40 | |
| 4d1ab432 JB |
41 | if (xen_initial_domain()) |
| 42 | x86_init.oem.arch_setup = xen_add_preferred_consoles; | |
| 079c4baa | 43 | x86_init.oem.banner = xen_banner; |
| 4d1ab432 | 44 | |
| 72813bfb | 45 | xen_efi_init(boot_params); |
| 934ef33e JB |
46 | |
| 47 | if (xen_initial_domain()) { | |
| 48 | struct xen_platform_op op = { | |
| 49 | .cmd = XENPF_get_dom0_console, | |
| 50 | }; | |
| aadbd07f | 51 | int ret = HYPERVISOR_platform_op(&op); |
| 934ef33e JB |
52 | |
| 53 | if (ret > 0) | |
| 54 | xen_init_vga(&op.u.dom0_console, | |
| 55 | min(ret * sizeof(char), | |
| 56 | sizeof(op.u.dom0_console)), | |
| 57 | &boot_params->screen_info); | |
| 58 | } | |
| 8cee3974 | 59 | } |
| a43fb7da MW |
60 | |
| 61 | void __init mem_map_via_hcall(struct boot_params *boot_params_p) | |
| 62 | { | |
| 63 | struct xen_memory_map memmap; | |
| 64 | int rc; | |
| 65 | ||
| 66 | memmap.nr_entries = ARRAY_SIZE(boot_params_p->e820_table); | |
| 67 | set_xen_guest_handle(memmap.buffer, boot_params_p->e820_table); | |
| 68 | rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); | |
| 69 | if (rc) { | |
| 70 | xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc); | |
| 71 | BUG(); | |
| 72 | } | |
| 73 | boot_params_p->e820_entries = memmap.nr_entries; | |
| 74 | } |