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x86: Move TCPA table to a writer function

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Move this table over to use a writer function, for x86 only.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-12-01 09:02:59 -07:00
parent c797f98bcd
commit ef55f48788
1 changed files with 16 additions and 22 deletions
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38
arch/x86/lib/acpi_table.c
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@ -189,22 +189,26 @@ __weak u32 acpi_fill_mcfg(u32 current)
/**
* 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)
int acpi_write_tcpa(struct acpi_ctx *ctx, const struct acpi_writer *entry)
{
struct acpi_table_header *header = &tcpa->header;
u32 current = (u32)tcpa + sizeof(struct acpi_tcpa);
struct acpi_table_header *header;
struct acpi_tcpa *tcpa;
u32 current;
int size = 0x10000; /* Use this as the default size */
void *log;
int ret;
if (!IS_ENABLED(CONFIG_TPM_V1))
return -ENOENT;
if (!CONFIG_IS_ENABLED(BLOBLIST))
return -ENXIO;
tcpa = ctx->current;
header = &tcpa->header;
memset(tcpa, '\0', sizeof(struct acpi_tcpa));
/* Fill out header fields */
@ -218,14 +222,19 @@ static int acpi_create_tcpa(struct acpi_tcpa *tcpa)
tcpa->platform_class = 0;
tcpa->laml = size;
tcpa->lasa = (ulong)log;
tcpa->lasa = map_to_sysmem(log);
/* (Re)calculate length and checksum */
current = (u32)tcpa + sizeof(struct acpi_tcpa);
header->length = current - (u32)tcpa;
header->checksum = table_compute_checksum((void *)tcpa, header->length);
header->checksum = table_compute_checksum(tcpa, header->length);
acpi_inc(ctx, tcpa->header.length);
acpi_add_table(ctx, tcpa);
return 0;
}
ACPI_WRITER(5tcpa, "TCPA", acpi_write_tcpa, 0);
static int get_tpm2_log(void **ptrp, int *sizep)
{
@ -530,23 +539,8 @@ ACPI_WRITER(5mcfg, "MCFG", acpi_write_mcfg, 0);
int write_acpi_tables_x86(struct acpi_ctx *ctx,
const struct acpi_writer *entry)
{
struct acpi_tcpa *tcpa;
struct acpi_csrt *csrt;
struct acpi_spcr *spcr;
int ret;
if (IS_ENABLED(CONFIG_TPM_V1)) {
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;