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| author | Simon Glass <sjg@chromium.org> | 2020-09-22 12:45:33 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-09-25 11:27:23 +0800 |
| commit | 77bb1c69dfca24e4c14fd6876a68a38118142cae (patch) | |
| tree | 58430679401efadf0c7bb7e4f619bd1b762834a0 /arch/x86 | |
| parent | 9179c3571ce587e96b957d0da8f0e4dcabc8d293 (diff) | |
| download | u-boot-77bb1c69dfca24e4c14fd6876a68a38118142cae.tar.gz u-boot-77bb1c69dfca24e4c14fd6876a68a38118142cae.tar.xz u-boot-77bb1c69dfca24e4c14fd6876a68a38118142cae.zip | |
acpi: tpm: Add a TPM1 table
This provides information about a v1 TPM in the system. Generate this
table if the TPM is present.
Add a required new bloblist type and correct the header order of one
header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/lib/acpi_table.c | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index c31cc923c9..10cf3b7094 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -215,6 +215,47 @@ static void acpi_create_mcfg(struct acpi_mcfg *mcfg) header->checksum = table_compute_checksum((void *)mcfg, header->length); } +/** + * acpi_create_tcpa() - Create a TCPA table + * + * @tcpa: Pointer to place to put table + * + * Trusted Computing Platform Alliance Capabilities Table + * TCPA PC Specific Implementation SpecificationTCPA is defined in the PCI + * Firmware Specification 3.0 + */ +static int acpi_create_tcpa(struct acpi_tcpa *tcpa) +{ + struct acpi_table_header *header = &tcpa->header; + u32 current = (u32)tcpa + sizeof(struct acpi_tcpa); + int size = 0x10000; /* Use this as the default size */ + void *log; + int ret; + + if (!CONFIG_IS_ENABLED(BLOBLIST)) + return -ENXIO; + memset(tcpa, '\0', sizeof(struct acpi_tcpa)); + + /* Fill out header fields */ + acpi_fill_header(header, "TCPA"); + header->length = sizeof(struct acpi_tcpa); + header->revision = 1; + + ret = bloblist_ensure_size_ret(BLOBLISTT_TCPA_LOG, &size, &log); + if (ret) + return log_msg_ret("blob", ret); + + tcpa->platform_class = 0; + tcpa->laml = size; + tcpa->lasa = (ulong)log; + + /* (Re)calculate length and checksum */ + header->length = current - (u32)tcpa; + header->checksum = table_compute_checksum((void *)tcpa, header->length); + + return 0; +} + static int get_tpm2_log(void **ptrp, int *sizep) { const int tpm2_default_log_len = 0x10000; @@ -457,11 +498,13 @@ ulong write_acpi_tables(ulong start_addr) struct acpi_fadt *fadt; struct acpi_table_header *ssdt; struct acpi_mcfg *mcfg; + struct acpi_tcpa *tcpa; struct acpi_madt *madt; struct acpi_csrt *csrt; struct acpi_spcr *spcr; void *start; ulong addr; + int ret; int i; start = map_sysmem(start_addr, 0); @@ -560,7 +603,6 @@ ulong write_acpi_tables(ulong start_addr) if (IS_ENABLED(CONFIG_TPM_V2)) { struct acpi_tpm2 *tpm2; - int ret; debug("ACPI: * TPM2\n"); tpm2 = (struct acpi_tpm2 *)ctx->current; @@ -579,6 +621,16 @@ ulong write_acpi_tables(ulong start_addr) acpi_inc_align(ctx, madt->header.length); acpi_add_table(ctx, madt); + debug("ACPI: * TCPA\n"); + tcpa = (struct acpi_tcpa *)ctx->current; + ret = acpi_create_tcpa(tcpa); + if (ret) { + log_warning("Failed to create TCPA table (err=%d)\n", ret); + } else { + acpi_inc_align(ctx, tcpa->header.length); + acpi_add_table(ctx, tcpa); + } + debug("ACPI: * CSRT\n"); csrt = ctx->current; if (!acpi_create_csrt(csrt)) { |