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 - 2025, 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
16ACPI_MODULE_NAME("tbprint")
17
18/* Local prototypes */
19static void acpi_tb_fix_string(char *string, acpi_size length);
20
21static void
22acpi_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
39static 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
66static void
67acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
68 struct acpi_table_header *header)
69{
70
71 memcpy(to: out_header, from: header, len: sizeof(struct acpi_table_header));
72
73 acpi_tb_fix_string(string: out_header->signature, ACPI_NAMESEG_SIZE);
74 acpi_tb_fix_string(string: out_header->oem_id, ACPI_OEM_ID_SIZE);
75 acpi_tb_fix_string(string: out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
76 acpi_tb_fix_string(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
92void
93acpi_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(to: 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(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 if (acpi_gbl_CDAT && !acpi_ut_valid_nameseg(signature: header->signature)) {
125
126 /* CDAT does not use the common ACPI table header */
127
128 ACPI_INFO(("%-4.4s 0x%8.8X%8.8X %06X",
129 ACPI_SIG_CDAT, ACPI_FORMAT_UINT64(address),
130 ACPI_CAST_PTR(struct acpi_table_cdat,
131 header)->length));
132 } else {
133 /* Standard ACPI table with full common header */
134
135 acpi_tb_cleanup_table_header(out_header: &local_header, header);
136
137 ACPI_INFO(("%-4.4s 0x%8.8X%8.8X"
138 " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)",
139 local_header.signature, ACPI_FORMAT_UINT64(address),
140 local_header.length, local_header.revision,
141 local_header.oem_id, local_header.oem_table_id,
142 local_header.oem_revision,
143 local_header.asl_compiler_id,
144 local_header.asl_compiler_revision));
145 }
146}
147