1/*-
2 * Copyright (c) 2006 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/stand/efi/loader/arch/arm64/exec.c 301306 2016-06-04 08:47:45Z andrew $");
29
30#include <stand.h>
31#include <string.h>
32
33#include <sys/param.h>
34#include <sys/linker.h>
35#include <machine/elf.h>
36
37#include <bootstrap.h>
38
39#include <efi.h>
40#include <efilib.h>
41
42#include "loader_efi.h"
43#include "cache.h"
44
45#include "platform/acfreebsd.h"
46#include "acconfig.h"
47#define ACPI_SYSTEM_XFACE
48#define ACPI_USE_SYSTEM_INTTYPES
49#include "actypes.h"
50#include "actbl.h"
51
52static EFI_GUID acpi_guid = ACPI_TABLE_GUID;
53static EFI_GUID acpi20_guid = ACPI_20_TABLE_GUID;
54
55static int elf64_exec(struct preloaded_file *amp);
56static int elf64_obj_exec(struct preloaded_file *amp);
57
58int bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp);
59
60static struct file_format arm64_elf = {
61	elf64_loadfile,
62	elf64_exec
63};
64
65struct file_format *file_formats[] = {
66	&arm64_elf,
67	NULL
68};
69
70static int
71elf64_exec(struct preloaded_file *fp)
72{
73	vm_offset_t modulep, kernendp;
74	vm_offset_t clean_addr;
75	size_t clean_size;
76	struct file_metadata *md;
77	ACPI_TABLE_RSDP *rsdp;
78	Elf_Ehdr *ehdr;
79	char buf[24];
80	int err, revision;
81	void (*entry)(vm_offset_t);
82
83	rsdp = efi_get_table(&acpi20_guid);
84	if (rsdp == NULL) {
85		rsdp = efi_get_table(&acpi_guid);
86	}
87	if (rsdp != NULL) {
88		sprintf(buf, "0x%016llx", (unsigned long long)rsdp);
89		setenv("hint.acpi.0.rsdp", buf, 1);
90		revision = rsdp->Revision;
91		if (revision == 0)
92			revision = 1;
93		sprintf(buf, "%d", revision);
94		setenv("hint.acpi.0.revision", buf, 1);
95		strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId));
96		buf[sizeof(rsdp->OemId)] = '\0';
97		setenv("hint.acpi.0.oem", buf, 1);
98		sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress);
99		setenv("hint.acpi.0.rsdt", buf, 1);
100		if (revision >= 2) {
101			/* XXX extended checksum? */
102			sprintf(buf, "0x%016llx",
103			    (unsigned long long)rsdp->XsdtPhysicalAddress);
104			setenv("hint.acpi.0.xsdt", buf, 1);
105			sprintf(buf, "%d", rsdp->Length);
106			setenv("hint.acpi.0.xsdt_length", buf, 1);
107		}
108	}
109
110	if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
111        	return(EFTYPE);
112
113	ehdr = (Elf_Ehdr *)&(md->md_data);
114	entry = efi_translate(ehdr->e_entry);
115
116	efi_time_fini();
117	err = bi_load(fp->f_args, &modulep, &kernendp);
118	if (err != 0) {
119		efi_time_init();
120		return (err);
121	}
122
123	dev_cleanup();
124
125	/* Clean D-cache under kernel area and invalidate whole I-cache */
126	clean_addr = (vm_offset_t)efi_translate(fp->f_addr);
127	clean_size = (vm_offset_t)efi_translate(kernendp) - clean_addr;
128
129	cpu_flush_dcache((void *)clean_addr, clean_size);
130	cpu_inval_icache(NULL, 0);
131
132	(*entry)(modulep);
133	panic("exec returned");
134}
135
136static int
137elf64_obj_exec(struct preloaded_file *fp)
138{
139
140	printf("%s called for preloaded file %p (=%s):\n", __func__, fp,
141	    fp->f_name);
142	return (ENOSYS);
143}
144
145