blob: aed49d54bb83027c0af5c02ceda0b366a2698e27 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/usr/util/utilrsvdmem.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2017 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef UTILRSVDMEM_H
#define UTILRSVDMEM_H
#include <limits.h> // for KILOBYTE definition
namespace Util
{
/**
* 8-byte ascii entry labels for hbrt TOC
*/
typedef uint64_t hbrt_mem_label_t;
// Ascii label "VPD " in hex
constexpr hbrt_mem_label_t HBRT_MEM_LABEL_VPD = 0x5650442020202020;
// Ascii label "ATTR " in hex
constexpr hbrt_mem_label_t HBRT_MEM_LABEL_ATTR = 0x4154545220202020;
// Ascii label "ATTROVER" in hex
constexpr hbrt_mem_label_t HBRT_MEM_LABEL_ATTROVER = 0x415454524F564552;
// Ascii label "PADDING " in hex
constexpr hbrt_mem_label_t HBRT_MEM_LABEL_PADDING = 0x50414444494E4720;
// Ascii label "HYPCOMM " in hex
constexpr hbrt_mem_label_t HBRT_MEM_LABEL_HYPCOMM = 0x485950434f4d4d20;
/** @brief A 32 byte table of contents entry */
struct hbrtTableOfContentsEntry_t
{
uint64_t label; // ASCII HBRT_LABEL_x constants
uint64_t size; // data entry size in bytes
uint64_t offset; // offset into section
uint64_t reserved; // incase of future change
} __attribute__ ((packed));
// MAX ENTRIES = (4 KB - 64 byte header) / 32 bytes per entry = 126
#define HBRT_TOC_MAX_ENTRIES \
(((4*KILOBYTE) - 64) / sizeof(hbrtTableOfContentsEntry_t))
/** @brief A 4KB Table of Contents */
struct hbrtTableOfContents_t
{
char toc_header[32]; // "Hostboot Table of Contents"
uint8_t toc_version; // version
uint16_t total_entries; // Total entries in TOC
uint64_t total_size; // Total data section size (64k aligned)
uint8_t rsvd[21]; // reserved
hbrtTableOfContentsEntry_t entry[HBRT_TOC_MAX_ENTRIES];
} __attribute__ ((packed));
// Versions of table of contents
const uint8_t HBRT_TOC_VERSION_1 = 0x01;
/**
* @brief Get the address of a label's section based on TOC
* @param[in] i_label - HBRT_MEM_LABEL_... constant
* @param[in] i_hb_data_toc_addr - pointer to the table of contents
* @param[out] o_size - size of returned region in bytes
* @return virtual address of region or 0
* @platform FSP, OpenPOWER
**/
uint64_t hb_find_rsvd_mem_label(hbrt_mem_label_t i_label,
hbrtTableOfContents_t * i_hb_data_toc_addr,
uint64_t & o_size);
};
#endif // UTILRSVDMEM_H
|