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61 lines
1.4 KiB
61 lines
1.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/acpi.h> |
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#include <linux/export.h> |
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#include <xen/hvc-console.h> |
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#include <asm/io_apic.h> |
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#include <asm/hypervisor.h> |
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#include <asm/e820/api.h> |
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#include <xen/xen.h> |
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#include <asm/xen/interface.h> |
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#include <asm/xen/hypercall.h> |
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#include <xen/interface/memory.h> |
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#include "xen-ops.h" |
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/* |
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* PVH variables. |
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* |
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* The variable xen_pvh needs to live in a data segment since it is used |
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* after startup_{32|64} is invoked, which will clear the .bss segment. |
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*/ |
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bool __ro_after_init xen_pvh; |
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EXPORT_SYMBOL_GPL(xen_pvh); |
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void __init xen_pvh_init(struct boot_params *boot_params) |
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{ |
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u32 msr; |
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u64 pfn; |
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xen_pvh = 1; |
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xen_domain_type = XEN_HVM_DOMAIN; |
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xen_start_flags = pvh_start_info.flags; |
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msr = cpuid_ebx(xen_cpuid_base() + 2); |
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pfn = __pa(hypercall_page); |
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wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); |
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if (xen_initial_domain()) |
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x86_init.oem.arch_setup = xen_add_preferred_consoles; |
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x86_init.oem.banner = xen_banner; |
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xen_efi_init(boot_params); |
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} |
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void __init mem_map_via_hcall(struct boot_params *boot_params_p) |
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{ |
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struct xen_memory_map memmap; |
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int rc; |
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memmap.nr_entries = ARRAY_SIZE(boot_params_p->e820_table); |
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set_xen_guest_handle(memmap.buffer, boot_params_p->e820_table); |
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rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); |
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if (rc) { |
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xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc); |
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BUG(); |
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} |
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boot_params_p->e820_entries = memmap.nr_entries; |
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}
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