diff options
Diffstat (limited to 'src/drivers/i2c')
| -rw-r--r-- | src/drivers/i2c/tpm/cr50.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/drivers/i2c/tpm/cr50.c b/src/drivers/i2c/tpm/cr50.c index 1190262100..419ac1e68f 100644 --- a/src/drivers/i2c/tpm/cr50.c +++ b/src/drivers/i2c/tpm/cr50.c @@ -41,19 +41,19 @@ #include <timer.h> #include "tpm.h" +#define CR50_MAX_BURSTCOUNT 63 #define SLEEP_DURATION 60 /* in usec */ #define SLEEP_DURATION_LONG 210 /* in usec */ #define SLEEP_DURATION_SAFE 750 /* in usec */ #define SLEEP_DURATION_PROBE_MS 1000 /* in msec */ -#define CR50_MAX_BUFSIZE 63 #define CR50_DID_VID 0x00281ae0L struct tpm_inf_dev { int bus; unsigned int addr; - uint8_t buf[CR50_MAX_BUFSIZE + sizeof(uint8_t)]; + uint8_t buf[TPM_BUFSIZE + sizeof(uint8_t)]; }; static struct tpm_inf_dev g_tpm_dev CAR_GLOBAL; @@ -115,7 +115,7 @@ static int iic_tpm_write(uint8_t addr, uint8_t *buffer, size_t len) if (tpm_dev->addr == 0) return -1; - if (len > CR50_MAX_BUFSIZE) + if (len > TPM_BUFSIZE) return -1; /* Prepend the 'register address' to the buffer */ @@ -226,7 +226,7 @@ static int cr50_wait_burst_status(struct tpm_chip *chip, uint8_t mask, /* Check if mask matches and burst is valid */ if ((*status & mask) == mask && - *burst > 0 && *burst <= CR50_MAX_BUFSIZE) + *burst > 0 && *burst <= CR50_MAX_BURSTCOUNT) return 0; udelay(SLEEP_DURATION_SAFE); @@ -310,6 +310,9 @@ static int cr50_tis_i2c_send(struct tpm_chip *chip, uint8_t *buf, size_t len) uint8_t tpm_go[4] = { TPM_STS_GO }; struct stopwatch sw; + if (len > TPM_BUFSIZE) + return -1; + stopwatch_init_msecs_expire(&sw, 2000); /* Wait until TPM is ready for a command */ |