1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2016 Tooams Soome <tsoome@me.com>
14 */
15
16 #include <sys/cdefs.h>
17
18 #include <stand.h>
19 #include <machine/stdarg.h>
20 #include <bootstrap.h>
21 #include <efi.h>
22 #include <efilib.h>
23 #include <Guid/Acpi.h>
24
25 #include "platform/acfreebsd.h"
26 #include "acconfig.h"
27 #define ACPI_SYSTEM_XFACE
28 #include "actypes.h"
29 #include "actbl.h"
30
31 ACPI_TABLE_RSDP *rsdp;
32 EFI_GUID gEfiAcpiTableGuid = ACPI_TABLE_GUID;
33 EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_TABLE_GUID;
34
35 void
acpi_detect(void)36 acpi_detect(void)
37 {
38 char buf[24];
39 int revision;
40
41 if ((rsdp = efi_get_table(&gEfiAcpi20TableGuid)) == NULL)
42 rsdp = efi_get_table(&gEfiAcpiTableGuid);
43
44 if (rsdp == NULL)
45 return;
46
47 /* export values from the RSDP */
48 #ifdef _LP64
49 snprintf(buf, sizeof (buf), "0x%016llx", (unsigned long long)rsdp);
50 #else
51 snprintf(buf, sizeof (buf), "0x%08x", (unsigned int)rsdp);
52 #endif
53 setenv("acpi.rsdp", buf, 1);
54 revision = rsdp->Revision;
55 if (revision == 0)
56 revision = 1;
57 snprintf(buf, sizeof (buf), "%d", revision);
58 setenv("acpi.revision", buf, 1);
59 strncpy(buf, rsdp->OemId, sizeof (rsdp->OemId));
60 buf[sizeof (rsdp->OemId)] = '\0';
61 setenv("acpi.oem", buf, 1);
62 #ifdef _LP64
63 snprintf(buf, sizeof (buf), "0x%016llx",
64 (unsigned long long)rsdp->RsdtPhysicalAddress);
65 #else
66 snprintf(buf, sizeof (buf), "0x%08x", rsdp->RsdtPhysicalAddress);
67 #endif
68 setenv("acpi.rsdt", buf, 1);
69 if (revision >= 2) {
70 snprintf(buf, sizeof (buf), "0x%016llx",
71 (unsigned long long)rsdp->XsdtPhysicalAddress);
72 setenv("acpi.xsdt", buf, 1);
73 snprintf(buf, sizeof (buf), "%d", rsdp->Length);
74 setenv("acpi.xsdt_length", buf, 1);
75 }
76 }
77