diff options
| -rw-r--r-- | src/lib/tpm2_marshaling.c | 11 | ||||
| -rw-r--r-- | src/lib/tpm2_tlcl.c | 13 |
2 files changed, 15 insertions, 9 deletions
diff --git a/src/lib/tpm2_marshaling.c b/src/lib/tpm2_marshaling.c index ab9a928444..f4fd3cbc76 100644 --- a/src/lib/tpm2_marshaling.c +++ b/src/lib/tpm2_marshaling.c @@ -4,6 +4,7 @@ * found in the LICENSE file. */ +#include <arch/early_variables.h> #include <commonlib/endian.h> #include <console/console.h> #include <stdlib.h> @@ -11,7 +12,7 @@ #include "tpm2_marshaling.h" -static uint16_t tpm_tag; /* Depends on the command type. */ +static uint16_t tpm_tag CAR_GLOBAL; /* Depends on the command type. */ /* * Each unmarshaling function receives a pointer to the buffer pointer and a @@ -268,7 +269,7 @@ static void marshal_common_session_header(void **buffer, int i; struct tpm2_session_header session_header; - tpm_tag = TPM_ST_SESSIONS; + car_set_var(tpm_tag, TPM_ST_SESSIONS); for (i = 0; i < handle_count; i++) marshal_TPM_HANDLE(buffer, handles[i], buffer_space); @@ -380,7 +381,7 @@ int tpm_marshal_command(TPM_CC command, void *tpm_command_body, size_t body_size = max_body_size; /* Will be modified when marshaling some commands. */ - tpm_tag = TPM_ST_NO_SESSIONS; + car_set_var(tpm_tag, TPM_ST_NO_SESSIONS); switch (command) { case TPM2_Startup: @@ -437,7 +438,9 @@ int tpm_marshal_command(TPM_CC command, void *tpm_command_body, /* Total size includes the header size. */ marshaled_size += sizeof(struct tpm_header); - marshal_u16(&buffer, tpm_tag, &header_room); + uint16_t tpm_tag_value = car_get_var(tpm_tag); + + marshal_u16(&buffer, tpm_tag_value, &header_room); marshal_u32(&buffer, marshaled_size, &header_room); marshal_u32(&buffer, command, &header_room); return marshaled_size; diff --git a/src/lib/tpm2_tlcl.c b/src/lib/tpm2_tlcl.c index c8e7e90e7b..7bfd40d810 100644 --- a/src/lib/tpm2_tlcl.c +++ b/src/lib/tpm2_tlcl.c @@ -4,6 +4,7 @@ * found in the LICENSE file. */ +#include <arch/early_variables.h> #include <console/console.h> #include <endian.h> #include <lib/tpm2_tlcl_structures.h> @@ -24,10 +25,12 @@ static void *tpm_process_command(TPM_CC command, void *command_body) ssize_t out_size; size_t in_size; /* Command/response buffer. */ - static uint8_t cr_buffer[TPM_BUFFER_SIZE]; + static uint8_t cr_buffer[TPM_BUFFER_SIZE] CAR_GLOBAL; + + uint8_t *cr_buffer_ptr = car_get_var_ptr(cr_buffer); out_size = tpm_marshal_command(command, command_body, - cr_buffer, sizeof(cr_buffer)); + cr_buffer_ptr, sizeof(cr_buffer)); if (out_size < 0) { printk(BIOS_ERR, "command %#x, cr size %zd\n", command, out_size); @@ -35,13 +38,13 @@ static void *tpm_process_command(TPM_CC command, void *command_body) } in_size = sizeof(cr_buffer); - if (tis_sendrecv(cr_buffer, out_size, - cr_buffer, &in_size)) { + if (tis_sendrecv(cr_buffer_ptr, out_size, + cr_buffer_ptr, &in_size)) { printk(BIOS_ERR, "tpm transaction failed\n"); return NULL; } - return tpm_unmarshal_response(command, cr_buffer, in_size); + return tpm_unmarshal_response(command, cr_buffer_ptr, in_size); } |