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-rw-r--r--src/arch/x86/boot/acpi.c65
-rw-r--r--src/arch/x86/include/arch/acpi.h7
-rw-r--r--src/include/cbmem.h1
3 files changed, 73 insertions, 0 deletions
diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c
index 48260fc162..a7a638ffa4 100644
--- a/src/arch/x86/boot/acpi.c
+++ b/src/arch/x86/boot/acpi.c
@@ -250,6 +250,61 @@ void acpi_create_mcfg(acpi_mcfg_t *mcfg)
header->checksum = acpi_checksum((void *)mcfg, header->length);
}
+static void *get_tcpa_log(u32 *size)
+{
+ const struct cbmem_entry *ce;
+ const u32 tcpa_default_log_len = 0x10000;
+ void *lasa;
+ ce = cbmem_entry_find(CBMEM_ID_TCPA_LOG);
+ if (ce) {
+ lasa = cbmem_entry_start(ce);
+ *size = cbmem_entry_size(ce);
+ printk(BIOS_DEBUG, "TCPA log found at %p\n", lasa);
+ return lasa;
+ }
+ lasa = cbmem_add(CBMEM_ID_TCPA_LOG, tcpa_default_log_len);
+ if (!lasa) {
+ printk(BIOS_ERR, "TCPA log creation failed\n");
+ return NULL;
+ }
+
+ printk(BIOS_DEBUG, "TCPA log created at %p\n", lasa);
+ memset (lasa, 0, tcpa_default_log_len);
+
+ *size = tcpa_default_log_len;
+ return lasa;
+}
+
+static void acpi_create_tcpa(acpi_tcpa_t *tcpa)
+{
+ acpi_header_t *header = &(tcpa->header);
+ u32 tcpa_log_len;
+ void *lasa;
+
+ memset((void *)tcpa, 0, sizeof(acpi_tcpa_t));
+
+ lasa = get_tcpa_log(&tcpa_log_len);
+ if (!lasa) {
+ return;
+ }
+
+ /* Fill out header fields. */
+ memcpy(header->signature, "TCPA", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(acpi_tcpa_t);
+ header->revision = 2;
+
+ tcpa->platform_class = 0;
+ tcpa->laml = tcpa_log_len;
+ tcpa->lasa = (u32) lasa;
+
+ /* Calculate checksum. */
+ header->checksum = acpi_checksum((void *)tcpa, header->length);
+}
+
void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
{
unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t);
@@ -688,6 +743,7 @@ unsigned long write_acpi_tables(unsigned long start)
acpi_header_t *ssdt;
acpi_header_t *dsdt;
acpi_mcfg_t *mcfg;
+ acpi_tcpa_t *tcpa;
acpi_madt_t *madt;
struct device *dev;
unsigned long fw;
@@ -805,6 +861,15 @@ unsigned long write_acpi_tables(unsigned long start)
acpi_add_table(rsdp, mcfg);
}
+ printk(BIOS_DEBUG, "ACPI: * TCPA\n");
+ tcpa = (acpi_tcpa_t *) current;
+ acpi_create_tcpa(tcpa);
+ if (tcpa->header.length >= sizeof(acpi_tcpa_t)) {
+ current += tcpa->header.length;
+ ALIGN_CURRENT;
+ acpi_add_table(rsdp, tcpa);
+ }
+
printk(BIOS_DEBUG, "ACPI: * MADT\n");
madt = (acpi_madt_t *) current;
diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h
index 245599fa9d..10db820409 100644
--- a/src/arch/x86/include/arch/acpi.h
+++ b/src/arch/x86/include/arch/acpi.h
@@ -129,6 +129,13 @@ typedef struct acpi_mcfg {
u8 reserved[8];
} __attribute__ ((packed)) acpi_mcfg_t;
+typedef struct acpi_tcpa {
+ struct acpi_table_header header;
+ u16 platform_class;
+ u32 laml;
+ u64 lasa;
+} __attribute__ ((packed)) acpi_tcpa_t;
+
typedef struct acpi_mcfg_mmconfig {
u32 base_address;
u32 base_reserved;
diff --git a/src/include/cbmem.h b/src/include/cbmem.h
index 5fd67afa4c..afee873f42 100644
--- a/src/include/cbmem.h
+++ b/src/include/cbmem.h
@@ -79,6 +79,7 @@
#define CBMEM_ID_VBOOT_HANDOFF 0x780074f0
#define CBMEM_ID_VBOOT_WORKBUF 0x78007343
#define CBMEM_ID_WIFI_CALIBRATION 0x57494649
+#define CBMEM_ID_TCPA_LOG 0x54435041
#ifndef __ASSEMBLER__
#include <stddef.h>