/* $NetBSD: efiboot.c,v 1.13 2023/04/20 00:42:24 manu Exp $ */
/*-
* Copyright (c) 2016 Kimihiro Nonaka <
[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "efiboot.h"
#include "bootinfo.h"
#include "devopen.h"
EFI_HANDLE IH;
EFI_DEVICE_PATH *efi_bootdp;
enum efi_boot_device_type efi_bootdp_type = BOOT_DEVICE_TYPE_HD;
EFI_LOADED_IMAGE *efi_li;
uintptr_t efi_main_sp;
physaddr_t efi_loadaddr, efi_kernel_start, efi_load_start;
physaddr_t efi_kernel_reloc = 0;
enum efi_reloc_type efi_reloc_type = RELOC_DEFAULT;
u_long efi_kernel_size;
bool efi_cleanuped;
struct btinfo_efimemmap *btinfo_efimemmap = NULL;
static EFI_PHYSICAL_ADDRESS heap_start = EFI_ALLOCATE_MAX_ADDRESS;
static UINTN heap_size = 1 * 1024 * 1024; /* 1MB */
static struct btinfo_efi btinfo_efi;
static void efi_heap_init(void);
EFI_STATUS EFIAPI efi_main(EFI_HANDLE, EFI_SYSTEM_TABLE *);
EFI_STATUS EFIAPI
efi_main(EFI_HANDLE imageHandle, EFI_SYSTEM_TABLE *systemTable)
{
EFI_STATUS status;
EFI_DEVICE_PATH *dp0, *dp;
extern char twiddle_toggle;
IH = imageHandle;
InitializeLib(IH, systemTable);
efi_main_sp = (uintptr_t)&status;
twiddle_toggle = 1; /* no twiddling until we're ready */
cninit();
efi_heap_init();
efi_md_init();
status = uefi_call_wrapper(BS->HandleProtocol, 3, IH,
&LoadedImageProtocol, (void **)&efi_li);
if (EFI_ERROR(status))
panic("HandleProtocol(LoadedImageProtocol): %" PRIxMAX,
(uintmax_t)status);
status = uefi_call_wrapper(BS->HandleProtocol, 3, efi_li->DeviceHandle,
&DevicePathProtocol, (void **)&dp0);
if (EFI_ERROR(status))
panic("HandleProtocol(DevicePathProtocol): %" PRIxMAX,
(uintmax_t)status);
efi_bootdp = dp0;
for (dp = dp0; !IsDevicePathEnd(dp); dp = NextDevicePathNode(dp)) {
if (DevicePathType(dp) == MEDIA_DEVICE_PATH &&
DevicePathSubType(dp) == MEDIA_CDROM_DP) {
efi_bootdp_type = BOOT_DEVICE_TYPE_CD;
break;
}
if (DevicePathType(dp) == MESSAGING_DEVICE_PATH &&
DevicePathSubType(dp) == MSG_MAC_ADDR_DP) {
efi_bootdp_type = BOOT_DEVICE_TYPE_NET;
break;
}
}
efi_memory_probe();
efi_disk_probe();
efi_pxe_probe();
efi_net_probe();
status = uefi_call_wrapper(BS->SetWatchdogTimer, 4, 0, 0, 0, NULL);
if (EFI_ERROR(status))
panic("SetWatchdogTimer: %" PRIxMAX, (uintmax_t)status);
boot();
return EFI_SUCCESS;
}
void
efi_cleanup(void)
{
EFI_STATUS status;
EFI_MEMORY_DESCRIPTOR *desc;
UINTN NoEntries, MapKey, DescriptorSize;
UINT32 DescriptorVersion;
size_t allocsz;
memset(&btinfo_efi, 0, sizeof(btinfo_efi));
btinfo_efi.systblpa = (intptr_t)ST;
#ifdef __i386__ /* bootia32.efi */
btinfo_efi.flags |= BI_EFI_32BIT;
#endif
BI_ADD(&btinfo_efi, BTINFO_EFI, sizeof(btinfo_efi));
NoEntries = 0;
desc = efi_memory_get_map(&NoEntries, &MapKey, &DescriptorSize,
&DescriptorVersion, true);
status = uefi_call_wrapper(BS->ExitBootServices, 2, IH, MapKey);
if (EFI_ERROR(status)) {
FreePool(desc);
desc = efi_memory_get_map(&NoEntries, &MapKey, &DescriptorSize,
&DescriptorVersion, true);
status = uefi_call_wrapper(BS->ExitBootServices, 2, IH, MapKey);
if (EFI_ERROR(status))
panic("ExitBootServices failed");
}
efi_cleanuped = true;
efi_memory_compact_map(desc, &NoEntries, DescriptorSize);
allocsz = sizeof(struct btinfo_efimemmap) - 1
+ NoEntries * DescriptorSize;
btinfo_efimemmap = alloc(allocsz);
btinfo_efimemmap->num = NoEntries;
btinfo_efimemmap->version = DescriptorVersion;
btinfo_efimemmap->size = DescriptorSize;
memcpy(btinfo_efimemmap->memmap, desc, NoEntries * DescriptorSize);
BI_ADD(btinfo_efimemmap, BTINFO_EFIMEMMAP, allocsz);
}
static void
efi_heap_init(void)
{
EFI_STATUS status;
u_int sz = EFI_SIZE_TO_PAGES(heap_size);
status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
EfiLoaderData, sz, &heap_start);
if (EFI_ERROR(status))
Panic(L"%a: AllocatePages() failed: %d page(s): %r",
__func__, sz, status);
setheap((void *)(UINTN)heap_start,
(void *)(UINTN)(heap_start + heap_size));
}
