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/*-
* Copyright (c) 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 <string.h>
#include <sys/param.h>
#include <sys/linker.h>
#include <machine/elf.h>
#include <bootstrap.h>
#include <efi.h>
#include <efilib.h>
#include "loader_efi.h"
#include "cache.h"
#include "platform/acfreebsd.h"
#include "acconfig.h"
#define ACPI_SYSTEM_XFACE
#define ACPI_USE_SYSTEM_INTTYPES
#include "actypes.h"
#include "actbl.h"
static EFI_GUID acpi_guid = ACPI_TABLE_GUID;
static EFI_GUID acpi20_guid = ACPI_20_TABLE_GUID;
static int elf64_exec(struct preloaded_file *amp);
static int elf64_obj_exec(struct preloaded_file *amp);
int bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp,
bool exit_bs);
static struct file_format arm64_elf = {
elf64_loadfile,
elf64_exec
};
struct file_format *file_formats[] = {
&arm64_elf,
NULL
};
static int
elf64_exec(struct preloaded_file *fp)
{
vm_offset_t modulep, kernendp;
vm_offset_t clean_addr;
size_t clean_size;
struct file_metadata *md;
ACPI_TABLE_RSDP *rsdp;
Elf_Ehdr *ehdr;
char buf[24];
int err, revision;
void (*entry)(vm_offset_t);
/*
* Report the RSDP to the kernel. The old code used the 'hints' method
* to communicate this to the kernel, but this is now considered legacy.
* Instead, move to setting different tunables that start with acpi.
* The old 'hints' can be removed before we branch for FreeBSD 15.
*/
rsdp = efi_get_table(&acpi20_guid);
if (rsdp == NULL) {
rsdp = efi_get_table(&acpi_guid);
}
if (rsdp != NULL) {
sprintf(buf, "0x%016llx", (unsigned long long)rsdp);
setenv("hint.acpi.0.rsdp", buf, 1);
setenv("acpi.rsdp", buf, 1);
revision = rsdp->Revision;
if (revision == 0)
revision = 1;
sprintf(buf, "%d", revision);
setenv("hint.acpi.0.revision", buf, 1);
setenv("acpi.revision", buf, 1);
strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId));
buf[sizeof(rsdp->OemId)] = '\0';
setenv("hint.acpi.0.oem", buf, 1);
setenv("acpi.oem", buf, 1);
sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress);
setenv("hint.acpi.0.rsdt", buf, 1);
setenv("acpi.rsdt", buf, 1);
if (revision >= 2) {
/* XXX extended checksum? */
sprintf(buf, "0x%016llx",
(unsigned long long)rsdp->XsdtPhysicalAddress);
setenv("hint.acpi.0.xsdt", buf, 1);
setenv("acpi.xsdt", buf, 1);
sprintf(buf, "%d", rsdp->Length);
setenv("hint.acpi.0.xsdt_length", buf, 1);
setenv("acpi.xsdt_length", buf, 1);
}
}
if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
return(EFTYPE);
ehdr = (Elf_Ehdr *)&(md->md_data);
entry = efi_translate(ehdr->e_entry);
efi_time_fini();
err = bi_load(fp->f_args, &modulep, &kernendp, true);
if (err != 0) {
efi_time_init();
return (err);
}
dev_cleanup();
/* Clean D-cache under kernel area and invalidate whole I-cache */
clean_addr = (vm_offset_t)efi_translate(fp->f_addr);
clean_size = (vm_offset_t)efi_translate(kernendp) - clean_addr;
cpu_flush_dcache((void *)clean_addr, clean_size);
cpu_inval_icache();
(*entry)(modulep);
panic("exec returned");
}
static int
elf64_obj_exec(struct preloaded_file *fp)
{
printf("%s called for preloaded file %p (=%s):\n", __func__, fp,
fp->f_name);
return (ENOSYS);
}
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