/* $NetBSD: efiboot.c,v 1.16.4.1 2019/09/26 19:15:18 martin Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
* 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 "efifile.h"
#include "efiblock.h"
#include "efifdt.h"
#include "efiacpi.h"
#include <sys/reboot.h>
#include <libfdt.h>
EFI_HANDLE IH;
EFI_DEVICE_PATH *efi_bootdp;
EFI_LOADED_IMAGE *efi_li;
int howto = 0;
#ifdef _LP64
#define PRIxEFIPTR "lX"
#define PRIxEFISIZE "lX"
#else
#define PRIxEFIPTR "X"
#define PRIxEFISIZE "X"
#endif
static EFI_PHYSICAL_ADDRESS heap_start;
static UINTN heap_size = 8 * 1024 * 1024;
static EFI_EVENT delay_ev = 0;
EFI_STATUS EFIAPI efi_main(EFI_HANDLE, EFI_SYSTEM_TABLE *);
prop_dictionary_t efibootplist;
EFI_STATUS EFIAPI
efi_main(EFI_HANDLE imageHandle, EFI_SYSTEM_TABLE *systemTable)
{
EFI_STATUS status;
u_int sz = EFI_SIZE_TO_PAGES(heap_size);
IH = imageHandle;
InitializeLib(imageHandle, systemTable);
uefi_call_wrapper(ST->ConOut->Reset, 2, ST->ConOut, TRUE);
uefi_call_wrapper(ST->ConOut->SetMode, 2, ST->ConOut, 0);
uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, TRUE);
uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateAnyPages, EfiLoaderData, sz, &heap_start);
if (EFI_ERROR(status))
return status;
setheap((void *)(uintptr_t)heap_start, (void *)(uintptr_t)(heap_start + heap_size));
status = uefi_call_wrapper(BS->HandleProtocol, 3, imageHandle, &LoadedImageProtocol, (void **)&efi_li);
if (EFI_ERROR(status))
return status;
status = uefi_call_wrapper(BS->HandleProtocol, 3, efi_li->DeviceHandle, &DevicePathProtocol, (void **)&efi_bootdp);
if (EFI_ERROR(status))
efi_bootdp = NULL;
#ifdef EFIBOOT_DEBUG
Print(L"Loaded image : 0x%" PRIxEFIPTR "\n", efi_li);
Print(L"FilePath : 0x%" PRIxEFIPTR "\n", efi_li->FilePath);
Print(L"ImageBase : 0x%" PRIxEFIPTR "\n", efi_li->ImageBase);
Print(L"ImageSize : 0x%" PRIxEFISIZE "\n", efi_li->ImageSize);
Print(L"Image file : %s\n", DevicePathToStr(efi_li->FilePath));
#endif
efi_acpi_probe();
efi_fdt_probe();
efi_pxe_probe();
efi_net_probe();
efi_file_system_probe();
efi_block_probe();
boot();
return EFI_SUCCESS;
}
#ifdef EFIBOOT_RUNTIME_ADDRESS
static uint64_t
efi_runtime_alloc_va(uint64_t npages)
{
static uint64_t va = EFIBOOT_RUNTIME_ADDRESS;
static uint64_t sz = EFIBOOT_RUNTIME_SIZE;
uint64_t nva;
if (sz < (npages * EFI_PAGE_SIZE))
panic("efi_acpi_alloc_va: couldn't allocate %" PRIu64 " pages", npages);
nva = va;
va += (npages * EFI_PAGE_SIZE);
sz -= (npages * EFI_PAGE_SIZE);
return nva;
}
#endif
#ifdef EFIBOOT_RUNTIME_ADDRESS
static void
efi_set_virtual_address_map(EFI_MEMORY_DESCRIPTOR *memmap, UINTN nentries, UINTN mapkey, UINTN descsize, UINT32 descver)
{
EFI_MEMORY_DESCRIPTOR *md, *vmd, *vmemmap;
EFI_STATUS status;
int n, nrt;
void *fdt;
fdt = efi_fdt_data();
vmemmap = alloc(nentries * descsize);
if (vmemmap == NULL)
panic("FATAL: couldn't allocate virtual memory map");
for (n = 0, nrt = 0, vmd = vmemmap, md = memmap; n < nentries; n++, md = NextMemoryDescriptor(md, descsize)) {
if ((md->Attribute & EFI_MEMORY_RUNTIME) == 0)
continue;
md->VirtualStart = efi_runtime_alloc_va(md->NumberOfPages);
switch (md->Type) {
case EfiRuntimeServicesCode:
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->PhysicalStart);
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->VirtualStart);
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->NumberOfPages * EFI_PAGE_SIZE);
break;
case EfiRuntimeServicesData:
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->PhysicalStart);
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->VirtualStart);
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->NumberOfPages * EFI_PAGE_SIZE);
break;
case EfiMemoryMappedIO:
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-mmio", md->PhysicalStart);
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-mmio", md->VirtualStart);
fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-mmio", md->NumberOfPages * EFI_PAGE_SIZE);
break;
default:
break;
}
*vmd = *md;
vmd = NextMemoryDescriptor(vmd, descsize);
++nrt;
}
status = uefi_call_wrapper(RT->SetVirtualAddressMap, 4, nrt * descsize, descsize, descver, vmemmap);
if (EFI_ERROR(status)) {
printf("WARNING: SetVirtualAddressMap failed\n");
return;
}
}
#endif
void
efi_cleanup(void)
{
EFI_STATUS status;
EFI_MEMORY_DESCRIPTOR *memmap;
UINTN nentries, mapkey, descsize;
UINT32 descver;
if (efibootplist) {
prop_object_release(efibootplist);
}
memmap = LibMemoryMap(&nentries, &mapkey, &descsize, &descver);
status = uefi_call_wrapper(BS->ExitBootServices, 2, IH, mapkey);
if (EFI_ERROR(status)) {
printf("WARNING: ExitBootServices failed\n");
return;
}
#ifdef EFIBOOT_RUNTIME_ADDRESS
efi_set_virtual_address_map(memmap, nentries, mapkey, descsize, descver);
#endif
}
void
efi_exit(void)
{
EFI_STATUS status;
status = uefi_call_wrapper(BS->Exit, 4, IH, EFI_ABORTED, 0, NULL);
if (EFI_ERROR(status))
printf("WARNING: Exit failed\n");
}
void
efi_reboot(void)
{
uefi_call_wrapper(RT->ResetSystem, 4, EfiResetCold, EFI_SUCCESS, 0, NULL);
printf("WARNING: Reset failed\n");
}
void
efi_delay(int us)
{
EFI_STATUS status;
UINTN val;
if (delay_ev == 0) {
status = uefi_call_wrapper(BS->CreateEvent, 5, EVT_TIMER, TPL_APPLICATION, 0, 0, &delay_ev);
if (EFI_ERROR(status))
return;
}
uefi_call_wrapper(BS->SetTimer, 3, delay_ev, TimerRelative, us * 10);
uefi_call_wrapper(BS->WaitForEvent, 3, 1, &delay_ev, &val);
}
void
efi_progress(const char *fmt, ...)
{
va_list ap;
if ((howto & AB_SILENT) != 0)
return;
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
}