75 строки
1.7 KiB
C
75 строки
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/acpi.h>
|
|
#include <linux/export.h>
|
|
|
|
#include <xen/hvc-console.h>
|
|
|
|
#include <asm/io_apic.h>
|
|
#include <asm/hypervisor.h>
|
|
#include <asm/e820/api.h>
|
|
|
|
#include <xen/xen.h>
|
|
#include <asm/xen/interface.h>
|
|
#include <asm/xen/hypercall.h>
|
|
|
|
#include <xen/interface/memory.h>
|
|
|
|
#include "xen-ops.h"
|
|
|
|
/*
|
|
* PVH variables.
|
|
*
|
|
* The variable xen_pvh needs to live in a data segment since it is used
|
|
* after startup_{32|64} is invoked, which will clear the .bss segment.
|
|
*/
|
|
bool __ro_after_init xen_pvh;
|
|
EXPORT_SYMBOL_GPL(xen_pvh);
|
|
|
|
void __init xen_pvh_init(struct boot_params *boot_params)
|
|
{
|
|
u32 msr;
|
|
u64 pfn;
|
|
|
|
xen_pvh = 1;
|
|
xen_domain_type = XEN_HVM_DOMAIN;
|
|
xen_start_flags = pvh_start_info.flags;
|
|
|
|
msr = cpuid_ebx(xen_cpuid_base() + 2);
|
|
pfn = __pa(hypercall_page);
|
|
wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32));
|
|
|
|
if (xen_initial_domain())
|
|
x86_init.oem.arch_setup = xen_add_preferred_consoles;
|
|
x86_init.oem.banner = xen_banner;
|
|
|
|
xen_efi_init(boot_params);
|
|
|
|
if (xen_initial_domain()) {
|
|
struct xen_platform_op op = {
|
|
.cmd = XENPF_get_dom0_console,
|
|
};
|
|
int ret = HYPERVISOR_platform_op(&op);
|
|
|
|
if (ret > 0)
|
|
xen_init_vga(&op.u.dom0_console,
|
|
min(ret * sizeof(char),
|
|
sizeof(op.u.dom0_console)),
|
|
&boot_params->screen_info);
|
|
}
|
|
}
|
|
|
|
void __init mem_map_via_hcall(struct boot_params *boot_params_p)
|
|
{
|
|
struct xen_memory_map memmap;
|
|
int rc;
|
|
|
|
memmap.nr_entries = ARRAY_SIZE(boot_params_p->e820_table);
|
|
set_xen_guest_handle(memmap.buffer, boot_params_p->e820_table);
|
|
rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap);
|
|
if (rc) {
|
|
xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc);
|
|
BUG();
|
|
}
|
|
boot_params_p->e820_entries = memmap.nr_entries;
|
|
}
|