1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /******************************************************************************
3 *
4 * Module Name: tbprint - Table output utilities
5 *
6 * Copyright (C) 2000 - 2022, Intel Corp.
7 *
8 *****************************************************************************/
9
10 #include <acpi/acpi.h>
11 #include "accommon.h"
12 #include "actables.h"
13 #include "acutils.h"
14
15 #define _COMPONENT ACPI_TABLES
16 ACPI_MODULE_NAME("tbprint")
17
18 /* Local prototypes */
19 static void acpi_tb_fix_string(char *string, acpi_size length);
20
21 static void
22 acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
23 struct acpi_table_header *header);
24
25 /*******************************************************************************
26 *
27 * FUNCTION: acpi_tb_fix_string
28 *
29 * PARAMETERS: string - String to be repaired
30 * length - Maximum length
31 *
32 * RETURN: None
33 *
34 * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
35 * with a question mark '?'.
36 *
37 ******************************************************************************/
38
acpi_tb_fix_string(char * string,acpi_size length)39 static void acpi_tb_fix_string(char *string, acpi_size length)
40 {
41
42 while (length && *string) {
43 if (!isprint((int)(u8)*string)) {
44 *string = '?';
45 }
46
47 string++;
48 length--;
49 }
50 }
51
52 /*******************************************************************************
53 *
54 * FUNCTION: acpi_tb_cleanup_table_header
55 *
56 * PARAMETERS: out_header - Where the cleaned header is returned
57 * header - Input ACPI table header
58 *
59 * RETURN: Returns the cleaned header in out_header
60 *
61 * DESCRIPTION: Copy the table header and ensure that all "string" fields in
62 * the header consist of printable characters.
63 *
64 ******************************************************************************/
65
66 static void
acpi_tb_cleanup_table_header(struct acpi_table_header * out_header,struct acpi_table_header * header)67 acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
68 struct acpi_table_header *header)
69 {
70
71 memcpy(out_header, header, sizeof(struct acpi_table_header));
72
73 acpi_tb_fix_string(out_header->signature, ACPI_NAMESEG_SIZE);
74 acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
75 acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
76 acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAMESEG_SIZE);
77 }
78
79 /*******************************************************************************
80 *
81 * FUNCTION: acpi_tb_print_table_header
82 *
83 * PARAMETERS: address - Table physical address
84 * header - Table header
85 *
86 * RETURN: None
87 *
88 * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.
89 *
90 ******************************************************************************/
91
92 void
acpi_tb_print_table_header(acpi_physical_address address,struct acpi_table_header * header)93 acpi_tb_print_table_header(acpi_physical_address address,
94 struct acpi_table_header *header)
95 {
96 struct acpi_table_header local_header;
97
98 if (ACPI_COMPARE_NAMESEG(header->signature, ACPI_SIG_FACS)) {
99
100 /* FACS only has signature and length fields */
101
102 ACPI_INFO(("%-4.4s 0x%8.8X%8.8X %06X",
103 header->signature, ACPI_FORMAT_UINT64(address),
104 header->length));
105 } else if (ACPI_VALIDATE_RSDP_SIG(ACPI_CAST_PTR(struct acpi_table_rsdp,
106 header)->signature)) {
107
108 /* RSDP has no common fields */
109
110 memcpy(local_header.oem_id,
111 ACPI_CAST_PTR(struct acpi_table_rsdp, header)->oem_id,
112 ACPI_OEM_ID_SIZE);
113 acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);
114
115 ACPI_INFO(("RSDP 0x%8.8X%8.8X %06X (v%.2d %-6.6s)",
116 ACPI_FORMAT_UINT64(address),
117 (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->
118 revision >
119 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,
120 header)->length : 20,
121 ACPI_CAST_PTR(struct acpi_table_rsdp,
122 header)->revision,
123 local_header.oem_id));
124 } else {
125 /* Standard ACPI table with full common header */
126
127 acpi_tb_cleanup_table_header(&local_header, header);
128
129 ACPI_INFO(("%-4.4s 0x%8.8X%8.8X"
130 " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)",
131 local_header.signature, ACPI_FORMAT_UINT64(address),
132 local_header.length, local_header.revision,
133 local_header.oem_id, local_header.oem_table_id,
134 local_header.oem_revision,
135 local_header.asl_compiler_id,
136 local_header.asl_compiler_revision));
137 }
138 }
139