0463b4a2fb
1. Make libefi portable by removing ia64 specific code and build it on i386 and amd64 by default to prevent regressions. These changes include fixes and improvements over previous code to establish or improve APIs where none existed or when the amount of kluging was unacceptably high. 2. Increase the amount of sharing between the efi and ski loaders to improve maintainability of the loaders and simplify making changes to the loader-kernel handshaking in the future. The version of the efi and ski loaders are now both changed to 1.2 as user visible improvements and changes have been made.
139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
/*-
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* Copyright (c) 2004, 2006 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include <efi.h>
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#include <efilib.h>
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#include <libia64.h>
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#define EFI_INTEL_FPSWA \
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{0xc41b6531,0x97b9,0x11d3,{0x9a,0x29,0x00,0x90,0x27,0x3f,0xc1,0x4d}}
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static EFI_GUID fpswa_guid = EFI_INTEL_FPSWA;
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/* DIG64 Headless Console & Debug Port Table. */
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#define HCDP_TABLE_GUID \
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{0xf951938d,0x620b,0x42ef,{0x82,0x79,0xa8,0x4b,0x79,0x61,0x78,0x98}}
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static EFI_GUID hcdp_guid = HCDP_TABLE_GUID;
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static UINTN mapkey;
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uint64_t
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ldr_alloc(vm_offset_t va)
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{
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return (0);
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}
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int
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ldr_bootinfo(struct bootinfo *bi, uint64_t *bi_addr)
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{
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VOID *fpswa;
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EFI_MEMORY_DESCRIPTOR *mm;
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EFI_PHYSICAL_ADDRESS addr;
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EFI_HANDLE handle;
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EFI_STATUS status;
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size_t bisz;
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UINTN mmsz, pages, sz;
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UINT32 mmver;
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bi->bi_systab = (uint64_t)ST;
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bi->bi_hcdp = (uint64_t)efi_get_table(&hcdp_guid);
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sz = sizeof(EFI_HANDLE);
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status = BS->LocateHandle(ByProtocol, &fpswa_guid, 0, &sz, &handle);
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if (status == 0)
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status = BS->HandleProtocol(handle, &fpswa_guid, &fpswa);
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bi->bi_fpswa = (status == 0) ? (uint64_t)fpswa : 0;
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bisz = (sizeof(struct bootinfo) + 0x0f) & ~0x0f;
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/*
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* Allocate enough pages to hold the bootinfo block and the memory
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* map EFI will return to us. The memory map has an unknown size,
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* so we have to determine that first. Note that the AllocatePages
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* call can itself modify the memory map, so we have to take that
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* into account as well. The changes to the memory map are caused
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* by splitting a range of free memory into two (AFAICT), so that
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* one is marked as being loader data.
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*/
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sz = 0;
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BS->GetMemoryMap(&sz, NULL, &mapkey, &mmsz, &mmver);
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sz += mmsz;
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sz = (sz + 15) & ~15;
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pages = EFI_SIZE_TO_PAGES(sz + bisz);
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status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, pages,
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&addr);
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if (EFI_ERROR(status)) {
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printf("%s: AllocatePages() returned 0x%lx\n", __func__,
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(long)status);
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return (ENOMEM);
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}
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/*
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* Read the memory map and stash it after bootinfo. Align the
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* memory map on a 16-byte boundary (the bootinfo block is page
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* aligned).
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*/
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*bi_addr = addr;
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mm = (void *)(addr + bisz);
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sz = (EFI_PAGE_SIZE * pages) - bisz;
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status = BS->GetMemoryMap(&sz, mm, &mapkey, &mmsz, &mmver);
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if (EFI_ERROR(status)) {
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printf("%s: GetMemoryMap() returned 0x%lx\n", __func__,
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(long)status);
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return (EINVAL);
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}
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bi->bi_memmap = (uint64_t)mm;
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bi->bi_memmap_size = sz;
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bi->bi_memdesc_size = mmsz;
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bi->bi_memdesc_version = mmver;
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bcopy(bi, (void *)(*bi_addr), sizeof(*bi));
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return (0);
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}
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int
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ldr_enter(const char *kernel)
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{
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EFI_STATUS status;
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status = BS->ExitBootServices(IH, mapkey);
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if (EFI_ERROR(status)) {
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printf("%s: ExitBootServices() returned 0x%lx\n", __func__,
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(long)status);
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return (EINVAL);
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}
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return (0);
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}
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