Andrew Jeffery | 4fe996c | 2018-02-27 12:16:48 +1030 | [diff] [blame] | 1 | // SPDX-License-Identifier: Apache-2.0 |
| 2 | // Copyright (C) 2018 IBM Corp. |
William A. Kennington III | d5f1d40 | 2018-10-11 13:55:04 -0700 | [diff] [blame] | 3 | #include "config.h" |
| 4 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 5 | #include <assert.h> |
| 6 | |
| 7 | extern "C" { |
| 8 | #include "backend.h" |
| 9 | } |
| 10 | |
Andrew Jeffery | 2ceba89 | 2018-02-28 17:44:54 +1030 | [diff] [blame] | 11 | #include "pnor_partition_table.hpp" |
William A. Kennington III | d5f1d40 | 2018-10-11 13:55:04 -0700 | [diff] [blame] | 12 | #include "xyz/openbmc_project/Common/error.hpp" |
| 13 | |
| 14 | #include <experimental/filesystem> |
| 15 | #include <phosphor-logging/elog-errors.hpp> |
| 16 | |
Deepak Kodihalli | 017e45c | 2017-07-12 01:06:30 -0500 | [diff] [blame] | 17 | #include "common.h" |
Andrew Jeffery | 26558db | 2018-08-10 00:22:38 +0930 | [diff] [blame] | 18 | #include "mboxd.h" |
William A. Kennington III | d5f1d40 | 2018-10-11 13:55:04 -0700 | [diff] [blame] | 19 | #include "mboxd_pnor_partition_table.h" |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 20 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 21 | void vpnor_default_paths(vpnor_partition_paths* paths) |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 22 | { |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 23 | strncpy(paths->ro_loc, PARTITION_FILES_RO_LOC, PATH_MAX); |
| 24 | paths->ro_loc[PATH_MAX - 1] = '\0'; |
| 25 | strncpy(paths->rw_loc, PARTITION_FILES_RW_LOC, PATH_MAX); |
| 26 | paths->rw_loc[PATH_MAX - 1] = '\0'; |
| 27 | strncpy(paths->prsv_loc, PARTITION_FILES_PRSV_LOC, PATH_MAX); |
| 28 | paths->prsv_loc[PATH_MAX - 1] = '\0'; |
| 29 | strncpy(paths->patch_loc, PARTITION_FILES_PATCH_LOC, PATH_MAX); |
| 30 | paths->prsv_loc[PATH_MAX - 1] = '\0'; |
Ratan Gupta | 3214b51 | 2017-05-11 08:58:19 +0530 | [diff] [blame] | 31 | } |
| 32 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 33 | int vpnor_init(struct backend* backend, const vpnor_partition_paths* paths) |
Ratan Gupta | 3214b51 | 2017-05-11 08:58:19 +0530 | [diff] [blame] | 34 | { |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 35 | namespace err = sdbusplus::xyz::openbmc_project::Common::Error; |
| 36 | namespace fs = std::experimental::filesystem; |
| 37 | namespace vpnor = openpower::virtual_pnor; |
Ratan Gupta | 3214b51 | 2017-05-11 08:58:19 +0530 | [diff] [blame] | 38 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 39 | if (!(backend && paths)) |
| 40 | return -EINVAL; |
| 41 | |
| 42 | vpnor_data* priv = new vpnor_data; |
| 43 | assert(priv); |
| 44 | |
| 45 | priv->paths = *paths; |
| 46 | backend->priv = priv; |
| 47 | |
| 48 | try |
Ratan Gupta | 3214b51 | 2017-05-11 08:58:19 +0530 | [diff] [blame] | 49 | { |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 50 | priv->vpnor = new vpnor_partition_table; |
| 51 | priv->vpnor->table = |
| 52 | new openpower::virtual_pnor::partition::Table(backend); |
| 53 | } |
| 54 | catch (vpnor::TocEntryError& e) |
| 55 | { |
| 56 | MSG_ERR("%s\n", e.what()); |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 57 | try |
| 58 | { |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 59 | phosphor::logging::commit<err::InternalFailure>(); |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 60 | } |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 61 | catch (const std::exception& e) |
| 62 | { |
| 63 | MSG_ERR("Failed to commit InternalFailure: %s\n", e.what()); |
| 64 | } |
| 65 | return -EINVAL; |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 66 | } |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 67 | |
| 68 | return 0; |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 69 | } |
| 70 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 71 | int vpnor_copy_bootloader_partition(const struct backend* backend, void* buf, |
| 72 | uint32_t count) |
Deepak Kodihalli | 017e45c | 2017-07-12 01:06:30 -0500 | [diff] [blame] | 73 | { |
| 74 | // The hostboot bootloader has certain size/offset assumptions, so |
| 75 | // we need a special partition table here. |
| 76 | // It assumes the PNOR is 64M, the TOC size is 32K, the erase block is |
| 77 | // 4K, the page size is 4K. |
| 78 | // It also assumes the TOC is at the 'end of pnor - toc size - 1 page size' |
| 79 | // offset, and first looks for the TOC here, before proceeding to move up |
| 80 | // page by page looking for the TOC. So it is optimal to place the TOC at |
| 81 | // this offset. |
| 82 | constexpr size_t eraseSize = 0x1000; |
| 83 | constexpr size_t pageSize = 0x1000; |
| 84 | constexpr size_t pnorSize = 0x4000000; |
| 85 | constexpr size_t tocMaxSize = 0x8000; |
| 86 | constexpr size_t tocStart = pnorSize - tocMaxSize - pageSize; |
| 87 | constexpr auto blPartitionName = "HBB"; |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 88 | |
| 89 | namespace err = sdbusplus::xyz::openbmc_project::Common::Error; |
Andrew Jeffery | d976c9c | 2018-02-27 14:56:07 +1030 | [diff] [blame] | 90 | namespace fs = std::experimental::filesystem; |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 91 | namespace vpnor = openpower::virtual_pnor; |
Deepak Kodihalli | 017e45c | 2017-07-12 01:06:30 -0500 | [diff] [blame] | 92 | |
Deepak Kodihalli | 6e6aa3a | 2017-08-28 06:13:43 -0500 | [diff] [blame] | 93 | try |
| 94 | { |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 95 | vpnor_partition_table vtbl{}; |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 96 | struct vpnor_data priv; |
| 97 | struct backend local = *backend; |
| 98 | |
| 99 | priv.vpnor = &vtbl; |
| 100 | priv.paths = ((struct vpnor_data*)backend->priv)->paths; |
| 101 | local.priv = &priv; |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 102 | local.block_size_shift = log_2(eraseSize); |
Andrew Jeffery | 742a1f6 | 2018-03-02 09:26:03 +1030 | [diff] [blame] | 103 | |
| 104 | openpower::virtual_pnor::partition::Table blTable(&local); |
| 105 | |
| 106 | vtbl.table = &blTable; |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 107 | |
| 108 | size_t tocOffset = 0; |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 109 | |
William A. Kennington III | d5f1d40 | 2018-10-11 13:55:04 -0700 | [diff] [blame] | 110 | const pnor_partition& partition = blTable.partition(blPartitionName); |
Deepak Kodihalli | 6e6aa3a | 2017-08-28 06:13:43 -0500 | [diff] [blame] | 111 | size_t hbbOffset = partition.data.base * eraseSize; |
| 112 | uint32_t hbbSize = partition.data.actual; |
Andrew Jeffery | 4e75a27 | 2019-03-14 17:24:38 +1030 | [diff] [blame] | 113 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 114 | if (count < tocStart + blTable.capacity() || |
| 115 | count < hbbOffset + hbbSize) |
Andrew Jeffery | 4e75a27 | 2019-03-14 17:24:38 +1030 | [diff] [blame] | 116 | { |
| 117 | MSG_ERR("Reserved memory too small for dumb bootstrap\n"); |
| 118 | return -EINVAL; |
| 119 | } |
| 120 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 121 | uint8_t* buf8 = static_cast<uint8_t*>(buf); |
| 122 | backend_copy(&local, tocOffset, buf8 + tocStart, blTable.capacity()); |
| 123 | backend_copy(&local, hbbOffset, buf8 + hbbOffset, hbbSize); |
Deepak Kodihalli | 6e6aa3a | 2017-08-28 06:13:43 -0500 | [diff] [blame] | 124 | } |
William A. Kennington III | d5f1d40 | 2018-10-11 13:55:04 -0700 | [diff] [blame] | 125 | catch (err::InternalFailure& e) |
Deepak Kodihalli | 6e6aa3a | 2017-08-28 06:13:43 -0500 | [diff] [blame] | 126 | { |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 127 | phosphor::logging::commit<err::InternalFailure>(); |
Andrew Jeffery | 8eab215 | 2018-08-09 23:47:29 +0930 | [diff] [blame] | 128 | return -EIO; |
Deepak Kodihalli | 6e6aa3a | 2017-08-28 06:13:43 -0500 | [diff] [blame] | 129 | } |
William A. Kennington III | d5f1d40 | 2018-10-11 13:55:04 -0700 | [diff] [blame] | 130 | catch (vpnor::ReasonedError& e) |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 131 | { |
| 132 | MSG_ERR("%s\n", e.what()); |
| 133 | phosphor::logging::commit<err::InternalFailure>(); |
Andrew Jeffery | 8eab215 | 2018-08-09 23:47:29 +0930 | [diff] [blame] | 134 | return -EIO; |
Andrew Jeffery | f96bd16 | 2018-02-26 13:05:00 +1030 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | return 0; |
Deepak Kodihalli | 017e45c | 2017-07-12 01:06:30 -0500 | [diff] [blame] | 138 | } |
| 139 | |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 140 | void vpnor_destroy(struct backend* backend) |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 141 | { |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 142 | struct vpnor_data* priv = (struct vpnor_data*)backend->priv; |
| 143 | |
| 144 | if (priv) |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 145 | { |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 146 | if (priv->vpnor) |
| 147 | { |
| 148 | delete priv->vpnor->table; |
| 149 | } |
| 150 | delete priv->vpnor; |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 151 | } |
Evan Lojewski | f1e547c | 2019-03-14 14:34:33 +1030 | [diff] [blame] | 152 | delete priv; |
Deepak Kodihalli | b6a446f | 2017-04-29 13:01:49 -0500 | [diff] [blame] | 153 | } |