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/*
* efi-dom0.c - Domain0 EFI Boot Support
*
* Copyright (C) 2016 Shannon Zhao <shannon.zhao@linaro.org>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; If not, see <http://www.gnu.org/licenses/>.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include "efi.h"
#include <xen/sched.h>
#include <xen/pfn.h>
#include <xen/libfdt/libfdt.h>
#include <asm/setup.h>
#include <asm/acpi.h>
#include "../../../common/decompress.h"
#define XZ_EXTERN static
#include "../../../common/xz/crc32.c"
/* Constant to indicate "Xen" in unicode u16 format */
static const CHAR16 xen_efi_fw_vendor[] = {0x0058, 0x0065, 0x006E, 0x0000};
size_t __init estimate_efi_size(unsigned int mem_nr_banks)
{
size_t size;
size_t est_size = sizeof(EFI_SYSTEM_TABLE);
size_t ect_size = sizeof(EFI_CONFIGURATION_TABLE);
size_t emd_size = sizeof(EFI_MEMORY_DESCRIPTOR);
size_t fw_vendor_size = sizeof(xen_efi_fw_vendor);
unsigned int acpi_mem_nr_banks = 0;
if ( !acpi_disabled )
acpi_mem_nr_banks = bootinfo.acpi.nr_banks;
size = ROUNDUP(est_size + ect_size + fw_vendor_size, 8);
/* plus 1 for new created tables */
size += ROUNDUP(emd_size * (mem_nr_banks + acpi_mem_nr_banks + 1), 8);
return size;
}
void __init acpi_create_efi_system_table(struct domain *d,
struct membank tbl_add[])
{
u64 table_addr, table_size, offset = 0;
u8 *base_ptr;
EFI_CONFIGURATION_TABLE *efi_conf_tbl;
EFI_SYSTEM_TABLE *efi_sys_tbl;
table_addr = d->arch.efi_acpi_gpa
+ acpi_get_table_offset(tbl_add, TBL_EFIT);
table_size = sizeof(EFI_SYSTEM_TABLE) + sizeof(EFI_CONFIGURATION_TABLE)
+ sizeof(xen_efi_fw_vendor);
base_ptr = d->arch.efi_acpi_table
+ acpi_get_table_offset(tbl_add, TBL_EFIT);
efi_sys_tbl = (EFI_SYSTEM_TABLE *)base_ptr;
efi_sys_tbl->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;
/* Specify the revision as 2.5 */
efi_sys_tbl->Hdr.Revision = (2 << 16 | 50);
efi_sys_tbl->Hdr.HeaderSize = table_size;
efi_sys_tbl->FirmwareRevision = 1;
efi_sys_tbl->NumberOfTableEntries = 1;
offset += sizeof(EFI_SYSTEM_TABLE);
memcpy(base_ptr + offset, xen_efi_fw_vendor, sizeof(xen_efi_fw_vendor));
efi_sys_tbl->FirmwareVendor = (CHAR16 *)(table_addr + offset);
offset += sizeof(xen_efi_fw_vendor);
efi_conf_tbl = (EFI_CONFIGURATION_TABLE *)(base_ptr + offset);
efi_conf_tbl->VendorGuid = (EFI_GUID)ACPI_20_TABLE_GUID;
efi_conf_tbl->VendorTable = (VOID *)tbl_add[TBL_RSDP].start;
efi_sys_tbl->ConfigurationTable = (EFI_CONFIGURATION_TABLE *)(table_addr
+ offset);
xz_crc32_init();
efi_sys_tbl->Hdr.CRC32 = xz_crc32((uint8_t *)efi_sys_tbl,
efi_sys_tbl->Hdr.HeaderSize, 0);
tbl_add[TBL_EFIT].start = table_addr;
tbl_add[TBL_EFIT].size = table_size;
}
static void __init fill_efi_memory_descriptor(EFI_MEMORY_DESCRIPTOR *desc,
UINT32 type,
EFI_PHYSICAL_ADDRESS start,
UINT64 size)
{
desc->Type = type;
desc->PhysicalStart = start;
BUG_ON(size & EFI_PAGE_MASK);
desc->NumberOfPages = EFI_SIZE_TO_PAGES(size);
desc->Attribute = EFI_MEMORY_WB;
}
void __init acpi_create_efi_mmap_table(struct domain *d,
const struct meminfo *mem,
struct membank tbl_add[])
{
EFI_MEMORY_DESCRIPTOR *desc;
unsigned int i;
u8 *base_ptr;
base_ptr = d->arch.efi_acpi_table
+ acpi_get_table_offset(tbl_add, TBL_MMAP);
desc = (EFI_MEMORY_DESCRIPTOR *)base_ptr;
for ( i = 0; i < mem->nr_banks; i++, desc++ )
fill_efi_memory_descriptor(desc, EfiConventionalMemory,
mem->bank[i].start, mem->bank[i].size);
for ( i = 0; i < bootinfo.acpi.nr_banks; i++, desc++ )
fill_efi_memory_descriptor(desc, EfiACPIReclaimMemory,
bootinfo.acpi.bank[i].start,
bootinfo.acpi.bank[i].size);
fill_efi_memory_descriptor(desc, EfiACPIReclaimMemory,
d->arch.efi_acpi_gpa, d->arch.efi_acpi_len);
tbl_add[TBL_MMAP].start = d->arch.efi_acpi_gpa
+ acpi_get_table_offset(tbl_add, TBL_MMAP);
tbl_add[TBL_MMAP].size = sizeof(EFI_MEMORY_DESCRIPTOR)
* (mem->nr_banks + bootinfo.acpi.nr_banks + 1);
}
/* Create /hypervisor/uefi node for efi properties. */
int __init acpi_make_efi_nodes(void *fdt, struct membank tbl_add[])
{
int res;
res = fdt_begin_node(fdt, "uefi");
if ( res )
return res;
res = fdt_property_u64(fdt, "xen,uefi-system-table",
tbl_add[TBL_EFIT].start);
if ( res )
return res;
res = fdt_property_u64(fdt, "xen,uefi-mmap-start",
tbl_add[TBL_MMAP].start);
if ( res )
return res;
res = fdt_property_u32(fdt, "xen,uefi-mmap-size",
tbl_add[TBL_MMAP].size);
if ( res )
return res;
res = fdt_property_u32(fdt, "xen,uefi-mmap-desc-size",
sizeof(EFI_MEMORY_DESCRIPTOR));
if ( res )
return res;
res = fdt_property_u32(fdt, "xen,uefi-mmap-desc-ver", 1);
if ( res )
return res;
res = fdt_end_node(fdt);
return res;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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