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Diffstat (limited to 'stand/efi/loader/arch/i386/efimd.c')
-rw-r--r--stand/efi/loader/arch/i386/efimd.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/stand/efi/loader/arch/i386/efimd.c b/stand/efi/loader/arch/i386/efimd.c
new file mode 100644
index 000000000000..8e1d850d82cc
--- /dev/null
+++ b/stand/efi/loader/arch/i386/efimd.c
@@ -0,0 +1,142 @@
+/*-
+ * Copyright (c) 2004, 2006 Marcel Moolenaar
+ * 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 AUTHOR ``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 AUTHOR 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stand.h>
+
+#include <efi.h>
+#include <efilib.h>
+
+#include <libi386.h>
+#include <machine/bootinfo.h>
+
+#define EFI_INTEL_FPSWA \
+ {0xc41b6531,0x97b9,0x11d3,{0x9a,0x29,0x00,0x90,0x27,0x3f,0xc1,0x4d}}
+
+static EFI_GUID fpswa_guid = EFI_INTEL_FPSWA;
+
+/* DIG64 Headless Console & Debug Port Table. */
+#define HCDP_TABLE_GUID \
+ {0xf951938d,0x620b,0x42ef,{0x82,0x79,0xa8,0x4b,0x79,0x61,0x78,0x98}}
+
+static EFI_GUID hcdp_guid = HCDP_TABLE_GUID;
+
+static UINTN mapkey;
+
+int ldr_bootinfo(struct bootinfo *, uint64_t *);
+int ldr_enter(const char *);
+
+static uint64_t
+ldr_alloc(vm_offset_t va)
+{
+
+ return (0);
+}
+
+int
+ldr_bootinfo(struct bootinfo *bi, uint64_t *bi_addr)
+{
+ VOID *fpswa;
+ EFI_MEMORY_DESCRIPTOR *mm;
+ EFI_PHYSICAL_ADDRESS addr;
+ EFI_HANDLE handle;
+ EFI_STATUS status;
+ size_t bisz;
+ UINTN mmsz, pages, sz;
+ UINT32 mmver;
+
+ bi->bi_systab = (uint64_t)ST;
+ bi->bi_hcdp = (uint64_t)efi_get_table(&hcdp_guid);
+
+ sz = sizeof(EFI_HANDLE);
+ status = BS->LocateHandle(ByProtocol, &fpswa_guid, 0, &sz, &handle);
+ if (status == 0)
+ status = BS->HandleProtocol(handle, &fpswa_guid, &fpswa);
+ bi->bi_fpswa = (status == 0) ? (uint64_t)fpswa : 0;
+
+ bisz = (sizeof(struct bootinfo) + 0x0f) & ~0x0f;
+
+ /*
+ * Allocate enough pages to hold the bootinfo block and the memory
+ * map EFI will return to us. The memory map has an unknown size,
+ * so we have to determine that first. Note that the AllocatePages
+ * call can itself modify the memory map, so we have to take that
+ * into account as well. The changes to the memory map are caused
+ * by splitting a range of free memory into two (AFAICT), so that
+ * one is marked as being loader data.
+ */
+ sz = 0;
+ BS->GetMemoryMap(&sz, NULL, &mapkey, &mmsz, &mmver);
+ sz += mmsz;
+ sz = (sz + 15) & ~15;
+ pages = EFI_SIZE_TO_PAGES(sz + bisz);
+ status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, pages,
+ &addr);
+ if (EFI_ERROR(status)) {
+ printf("%s: AllocatePages() returned 0x%lx\n", __func__,
+ (long)status);
+ return (ENOMEM);
+ }
+
+ /*
+ * Read the memory map and stash it after bootinfo. Align the
+ * memory map on a 16-byte boundary (the bootinfo block is page
+ * aligned).
+ */
+ *bi_addr = addr;
+ mm = (void *)(addr + bisz);
+ sz = (EFI_PAGE_SIZE * pages) - bisz;
+ status = BS->GetMemoryMap(&sz, mm, &mapkey, &mmsz, &mmver);
+ if (EFI_ERROR(status)) {
+ printf("%s: GetMemoryMap() returned 0x%lx\n", __func__,
+ (long)status);
+ return (EINVAL);
+ }
+ bi->bi_memmap = (uint64_t)mm;
+ bi->bi_memmap_size = sz;
+ bi->bi_memdesc_size = mmsz;
+ bi->bi_memdesc_version = mmver;
+
+ bcopy(bi, (void *)(*bi_addr), sizeof(*bi));
+ return (0);
+}
+
+int
+ldr_enter(const char *kernel)
+{
+ EFI_STATUS status;
+
+ status = BS->ExitBootServices(IH, mapkey);
+ if (EFI_ERROR(status)) {
+ printf("%s: ExitBootServices() returned 0x%lx\n", __func__,
+ (long)status);
+ return (EINVAL);
+ }
+
+ return (0);
+}