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tpm: add tpm_cmd_get_size() to tpm_util

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The function is generally useful and used in the following patches.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Marc-André Lureau 2017-11-06 19:39:17 +01:00 committed by Stefan Berger
parent 9af7a72166
commit 5cf954d021
2 changed files with 9 additions and 2 deletions
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3
hw/tpm/tpm_tis.c
View File

@ -30,6 +30,7 @@
#include "hw/pci/pci_ids.h"
#include "sysemu/tpm_backend.h"
#include "tpm_int.h"
#include "tpm_util.h"
#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
#define TPM_TIS_LOCALITY_SHIFT 12
@ -215,7 +216,7 @@ static uint8_t tpm_tis_locality_from_addr(hwaddr addr)
static uint32_t tpm_tis_get_size_from_buffer(const TPMSizedBuffer *sb)
{
return be32_to_cpu(*(uint32_t *)&sb->buffer[2]);
return tpm_cmd_get_size(sb->buffer);
}
static void tpm_tis_show_buffer(const TPMSizedBuffer *sb, const char *string)

8
hw/tpm/tpm_util.h
View File

@ -22,7 +22,8 @@
#ifndef TPM_TPM_UTIL_H
#define TPM_TPM_UTIL_H
#include "sysemu/tpm_backend.h"
#include "sysemu/tpm.h"
#include "qemu/bswap.h"
void tpm_util_write_fatal_error_response(uint8_t *out, uint32_t out_len);
@ -30,4 +31,9 @@ bool tpm_util_is_selftest(const uint8_t *in, uint32_t in_len);
int tpm_util_test_tpmdev(int tpm_fd, TPMVersion *tpm_version);
static inline uint32_t tpm_cmd_get_size(const void *b)
{
return be32_to_cpu(*(const uint32_t *)(b + 2));
}
#endif /* TPM_TPM_UTIL_H */