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54f97d1eef
The EFI memory map may change before or during the first ExitBootServices call. In that case ExitBootServices returns an error, and GetMemoryMap and ExitBootServices must be retried. Glue together calls to GetMemoryMap(), ExitBootServices() and storage of (now up-to-date) MODINFOMD_EFI_MAP metadata within a single function. That new function - bi_add_efi_data_and_exit() - uses space previously allocated in bi_load_efi_data() to store the memory map (it will fail if that space is too short). It handles re-calling GetMemoryMap() once to update the map key if necessary. Finally, if ExitBootServices() is successful, it stores the memory map and its header as MODINFOMD_EFI_MAP metadata. ExitBootServices() calls are now done earlier, from within arch- independent bi_load() code. PR: 202455 Submitted by: Ganael LAPLANCHE Reviewed by: kib MFC after: 2 weeks Relnotes: Yes Differential Revision: https://reviews.freebsd.org/D4296
140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/*-
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* Copyright (c) 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 <string.h>
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <machine/elf.h>
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#include <bootstrap.h>
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#include <efi.h>
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#include <efilib.h>
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#include "loader_efi.h"
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#include "cache.h"
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#include "platform/acfreebsd.h"
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#include "acconfig.h"
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#define ACPI_SYSTEM_XFACE
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#include "actypes.h"
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#include "actbl.h"
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static EFI_GUID acpi_guid = ACPI_TABLE_GUID;
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static EFI_GUID acpi20_guid = ACPI_20_TABLE_GUID;
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static int elf64_exec(struct preloaded_file *amp);
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static int elf64_obj_exec(struct preloaded_file *amp);
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int bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp);
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static struct file_format arm64_elf = {
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elf64_loadfile,
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elf64_exec
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};
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struct file_format *file_formats[] = {
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&arm64_elf,
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NULL
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};
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static int
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elf64_exec(struct preloaded_file *fp)
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{
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vm_offset_t modulep, kernendp;
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vm_offset_t clean_addr;
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size_t clean_size;
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struct file_metadata *md;
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ACPI_TABLE_RSDP *rsdp;
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EFI_STATUS status;
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EFI_PHYSICAL_ADDRESS addr;
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Elf_Ehdr *ehdr;
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char buf[24];
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int err, revision;
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void (*entry)(vm_offset_t);
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rsdp = efi_get_table(&acpi20_guid);
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if (rsdp == NULL) {
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rsdp = efi_get_table(&acpi_guid);
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}
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if (rsdp != NULL) {
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sprintf(buf, "0x%016llx", (unsigned long long)rsdp);
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setenv("hint.acpi.0.rsdp", buf, 1);
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revision = rsdp->Revision;
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if (revision == 0)
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revision = 1;
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sprintf(buf, "%d", revision);
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setenv("hint.acpi.0.revision", buf, 1);
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strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId));
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buf[sizeof(rsdp->OemId)] = '\0';
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setenv("hint.acpi.0.oem", buf, 1);
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sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress);
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setenv("hint.acpi.0.rsdt", buf, 1);
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if (revision >= 2) {
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/* XXX extended checksum? */
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sprintf(buf, "0x%016llx",
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(unsigned long long)rsdp->XsdtPhysicalAddress);
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setenv("hint.acpi.0.xsdt", buf, 1);
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sprintf(buf, "%d", rsdp->Length);
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setenv("hint.acpi.0.xsdt_length", buf, 1);
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}
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}
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if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
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return(EFTYPE);
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ehdr = (Elf_Ehdr *)&(md->md_data);
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entry = efi_translate(ehdr->e_entry);
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err = bi_load(fp->f_args, &modulep, &kernendp);
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if (err != 0)
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return (err);
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/* Clean D-cache under kernel area and invalidate whole I-cache */
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clean_addr = efi_translate(fp->f_addr);
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clean_size = efi_translate(kernendp) - clean_addr;
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cpu_flush_dcache((void *)clean_addr, clean_size);
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cpu_inval_icache(NULL, 0);
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(*entry)(modulep);
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panic("exec returned");
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}
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static int
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elf64_obj_exec(struct preloaded_file *fp)
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{
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printf("%s called for preloaded file %p (=%s):\n", __func__, fp,
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fp->f_name);
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return (ENOSYS);
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}
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