mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
5d97dff042
Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>. Replace all include directives for <asm-generic/errno.h> with <linux/errno.h>. <asm-generic/...> is supposed to be included from <asm/...> when arch-headers fall back into generic implementation. Generally, they should not be directly included from .c files. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> [trini: Add drivers/usb/host/xhci-rockchip.c] Signed-off-by: Tom Rini <trini@konsulko.com>
637 lines
15 KiB
C
637 lines
15 KiB
C
/*
|
|
* Copyright (C) 2011 Infineon Technologies
|
|
*
|
|
* Authors:
|
|
* Peter Huewe <huewe.external@infineon.com>
|
|
*
|
|
* Description:
|
|
* Device driver for TCG/TCPA TPM (trusted platform module).
|
|
* Specifications at www.trustedcomputinggroup.org
|
|
*
|
|
* This device driver implements the TPM interface as defined in
|
|
* the TCG TPM Interface Spec version 1.2, revision 1.0 and the
|
|
* Infineon I2C Protocol Stack Specification v0.20.
|
|
*
|
|
* It is based on the Linux kernel driver tpm.c from Leendert van
|
|
* Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
|
|
*
|
|
* Version: 2.1.1
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <fdtdec.h>
|
|
#include <i2c.h>
|
|
#include <tpm.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
#include <linux/unaligned/be_byteshift.h>
|
|
|
|
#include "tpm_tis.h"
|
|
#include "tpm_internal.h"
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
enum i2c_chip_type {
|
|
SLB9635,
|
|
SLB9645,
|
|
UNKNOWN,
|
|
};
|
|
|
|
/* expected value for DIDVID register */
|
|
#define TPM_TIS_I2C_DID_VID_9635 0x000b15d1L
|
|
#define TPM_TIS_I2C_DID_VID_9645 0x001a15d1L
|
|
|
|
static const char * const chip_name[] = {
|
|
[SLB9635] = "slb9635tt",
|
|
[SLB9645] = "slb9645tt",
|
|
[UNKNOWN] = "unknown/fallback to slb9635",
|
|
};
|
|
|
|
#define TPM_ACCESS(l) (0x0000 | ((l) << 4))
|
|
#define TPM_STS(l) (0x0001 | ((l) << 4))
|
|
#define TPM_DATA_FIFO(l) (0x0005 | ((l) << 4))
|
|
#define TPM_DID_VID(l) (0x0006 | ((l) << 4))
|
|
|
|
/*
|
|
* tpm_tis_i2c_read() - read from TPM register
|
|
* @addr: register address to read from
|
|
* @buffer: provided by caller
|
|
* @len: number of bytes to read
|
|
*
|
|
* Read len bytes from TPM register and put them into
|
|
* buffer (little-endian format, i.e. first byte is put into buffer[0]).
|
|
*
|
|
* NOTE: TPM is big-endian for multi-byte values. Multi-byte
|
|
* values have to be swapped.
|
|
*
|
|
* Return -EIO on error, 0 on success.
|
|
*/
|
|
static int tpm_tis_i2c_read(struct udevice *dev, u8 addr, u8 *buffer,
|
|
size_t len)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
int rc;
|
|
int count;
|
|
uint32_t addrbuf = addr;
|
|
|
|
if ((chip->chip_type == SLB9635) || (chip->chip_type == UNKNOWN)) {
|
|
/* slb9635 protocol should work in both cases */
|
|
for (count = 0; count < MAX_COUNT; count++) {
|
|
rc = dm_i2c_write(dev, 0, (uchar *)&addrbuf, 1);
|
|
if (rc == 0)
|
|
break; /* Success, break to skip sleep */
|
|
udelay(SLEEP_DURATION_US);
|
|
}
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* After the TPM has successfully received the register address
|
|
* it needs some time, thus we're sleeping here again, before
|
|
* retrieving the data
|
|
*/
|
|
for (count = 0; count < MAX_COUNT; count++) {
|
|
udelay(SLEEP_DURATION_US);
|
|
rc = dm_i2c_read(dev, 0, buffer, len);
|
|
if (rc == 0)
|
|
break; /* success, break to skip sleep */
|
|
}
|
|
} else {
|
|
/*
|
|
* Use a combined read for newer chips.
|
|
* Unfortunately the smbus functions are not suitable due to
|
|
* the 32 byte limit of the smbus.
|
|
* Retries should usually not be needed, but are kept just to
|
|
* be safe on the safe side.
|
|
*/
|
|
for (count = 0; count < MAX_COUNT; count++) {
|
|
rc = dm_i2c_read(dev, addr, buffer, len);
|
|
if (rc == 0)
|
|
break; /* break here to skip sleep */
|
|
udelay(SLEEP_DURATION_US);
|
|
}
|
|
}
|
|
|
|
/* Take care of 'guard time' */
|
|
udelay(SLEEP_DURATION_US);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tpm_tis_i2c_write_generic(struct udevice *dev, u8 addr,
|
|
const u8 *buffer, size_t len,
|
|
unsigned int sleep_time_us, u8 max_count)
|
|
{
|
|
struct tpm_chip_priv *priv = dev_get_uclass_priv(dev);
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
int rc = 0;
|
|
int count;
|
|
|
|
if (chip->chip_type == SLB9635) {
|
|
/* Prepare send buffer to include the address */
|
|
priv->buf[0] = addr;
|
|
memcpy(&(priv->buf[1]), buffer, len);
|
|
buffer = priv->buf;
|
|
len++;
|
|
addr = 0;
|
|
}
|
|
|
|
for (count = 0; count < max_count; count++) {
|
|
rc = dm_i2c_write(dev, addr, buffer, len);
|
|
if (rc == 0)
|
|
break; /* Success, break to skip sleep */
|
|
udelay(sleep_time_us);
|
|
}
|
|
|
|
/* take care of 'guard time' */
|
|
udelay(sleep_time_us);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* tpm_tis_i2c_write() - write to TPM register
|
|
* @addr: register address to write to
|
|
* @buffer: containing data to be written
|
|
* @len: number of bytes to write
|
|
*
|
|
* Write len bytes from provided buffer to TPM register (little
|
|
* endian format, i.e. buffer[0] is written as first byte).
|
|
*
|
|
* NOTE: TPM is big-endian for multi-byte values. Multi-byte
|
|
* values have to be swapped.
|
|
*
|
|
* NOTE: use this function instead of the tpm_tis_i2c_write_generic function.
|
|
*
|
|
* Return -EIO on error, 0 on success
|
|
*/
|
|
static int tpm_tis_i2c_write(struct udevice *dev, u8 addr, const u8 *buffer,
|
|
size_t len)
|
|
{
|
|
return tpm_tis_i2c_write_generic(dev, addr, buffer, len,
|
|
SLEEP_DURATION_US, MAX_COUNT);
|
|
}
|
|
|
|
/*
|
|
* This function is needed especially for the cleanup situation after
|
|
* sending TPM_READY
|
|
*/
|
|
static int tpm_tis_i2c_write_long(struct udevice *dev, u8 addr, u8 *buffer,
|
|
size_t len)
|
|
{
|
|
return tpm_tis_i2c_write_generic(dev, addr, buffer, len,
|
|
SLEEP_DURATION_LONG_US,
|
|
MAX_COUNT_LONG);
|
|
}
|
|
|
|
static int tpm_tis_i2c_check_locality(struct udevice *dev, int loc)
|
|
{
|
|
const u8 mask = TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID;
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
u8 buf;
|
|
int rc;
|
|
|
|
rc = tpm_tis_i2c_read(dev, TPM_ACCESS(loc), &buf, 1);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if ((buf & mask) == mask) {
|
|
chip->locality = loc;
|
|
return loc;
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
static void tpm_tis_i2c_release_locality(struct udevice *dev, int loc,
|
|
int force)
|
|
{
|
|
const u8 mask = TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID;
|
|
u8 buf;
|
|
|
|
if (tpm_tis_i2c_read(dev, TPM_ACCESS(loc), &buf, 1) < 0)
|
|
return;
|
|
|
|
if (force || (buf & mask) == mask) {
|
|
buf = TPM_ACCESS_ACTIVE_LOCALITY;
|
|
tpm_tis_i2c_write(dev, TPM_ACCESS(loc), &buf, 1);
|
|
}
|
|
}
|
|
|
|
static int tpm_tis_i2c_request_locality(struct udevice *dev, int loc)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
unsigned long start, stop;
|
|
u8 buf = TPM_ACCESS_REQUEST_USE;
|
|
int rc;
|
|
|
|
rc = tpm_tis_i2c_check_locality(dev, loc);
|
|
if (rc >= 0) {
|
|
debug("%s: Already have locality\n", __func__);
|
|
return loc; /* We already have the locality */
|
|
} else if (rc != -ENOENT) {
|
|
debug("%s: Failed to get locality: %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = tpm_tis_i2c_write(dev, TPM_ACCESS(loc), &buf, 1);
|
|
if (rc) {
|
|
debug("%s: Failed to write to TPM: %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
/* Wait for burstcount */
|
|
start = get_timer(0);
|
|
stop = chip->timeout_a;
|
|
do {
|
|
rc = tpm_tis_i2c_check_locality(dev, loc);
|
|
if (rc >= 0) {
|
|
debug("%s: Have locality\n", __func__);
|
|
return loc;
|
|
} else if (rc != -ENOENT) {
|
|
debug("%s: Failed to get locality: %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
mdelay(TPM_TIMEOUT_MS);
|
|
} while (get_timer(start) < stop);
|
|
debug("%s: Timeout getting locality: %d\n", __func__, rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static u8 tpm_tis_i2c_status(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
/* NOTE: Since i2c read may fail, return 0 in this case --> time-out */
|
|
u8 buf;
|
|
|
|
if (tpm_tis_i2c_read(dev, TPM_STS(chip->locality), &buf, 1) < 0)
|
|
return 0;
|
|
else
|
|
return buf;
|
|
}
|
|
|
|
static int tpm_tis_i2c_ready(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
int rc;
|
|
|
|
/* This causes the current command to be aborted */
|
|
u8 buf = TPM_STS_COMMAND_READY;
|
|
|
|
debug("%s\n", __func__);
|
|
rc = tpm_tis_i2c_write_long(dev, TPM_STS(chip->locality), &buf, 1);
|
|
if (rc)
|
|
debug("%s: rc=%d\n", __func__, rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t tpm_tis_i2c_get_burstcount(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
unsigned long start, stop;
|
|
ssize_t burstcnt;
|
|
u8 addr, buf[3];
|
|
|
|
/* Wait for burstcount */
|
|
/* XXX: Which timeout value? Spec has 2 answers (c & d) */
|
|
start = get_timer(0);
|
|
stop = chip->timeout_d;
|
|
do {
|
|
/* Note: STS is little endian */
|
|
addr = TPM_STS(chip->locality) + 1;
|
|
if (tpm_tis_i2c_read(dev, addr, buf, 3) < 0)
|
|
burstcnt = 0;
|
|
else
|
|
burstcnt = (buf[2] << 16) + (buf[1] << 8) + buf[0];
|
|
|
|
if (burstcnt)
|
|
return burstcnt;
|
|
mdelay(TPM_TIMEOUT_MS);
|
|
} while (get_timer(start) < stop);
|
|
|
|
return -EBUSY;
|
|
}
|
|
|
|
static int tpm_tis_i2c_wait_for_stat(struct udevice *dev, u8 mask,
|
|
unsigned long timeout, int *status)
|
|
{
|
|
unsigned long start, stop;
|
|
|
|
/* Check current status */
|
|
*status = tpm_tis_i2c_status(dev);
|
|
if ((*status & mask) == mask)
|
|
return 0;
|
|
|
|
start = get_timer(0);
|
|
stop = timeout;
|
|
do {
|
|
mdelay(TPM_TIMEOUT_MS);
|
|
*status = tpm_tis_i2c_status(dev);
|
|
if ((*status & mask) == mask)
|
|
return 0;
|
|
} while (get_timer(start) < stop);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
static int tpm_tis_i2c_recv_data(struct udevice *dev, u8 *buf, size_t count)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
size_t size = 0;
|
|
ssize_t burstcnt;
|
|
int rc;
|
|
|
|
while (size < count) {
|
|
burstcnt = tpm_tis_i2c_get_burstcount(dev);
|
|
|
|
/* burstcount < 0 -> tpm is busy */
|
|
if (burstcnt < 0)
|
|
return burstcnt;
|
|
|
|
/* Limit received data to max left */
|
|
if (burstcnt > (count - size))
|
|
burstcnt = count - size;
|
|
|
|
rc = tpm_tis_i2c_read(dev, TPM_DATA_FIFO(chip->locality),
|
|
&(buf[size]), burstcnt);
|
|
if (rc == 0)
|
|
size += burstcnt;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static int tpm_tis_i2c_recv(struct udevice *dev, u8 *buf, size_t count)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
int size = 0;
|
|
int expected, status;
|
|
int rc;
|
|
|
|
status = tpm_tis_i2c_status(dev);
|
|
if (status == TPM_STS_COMMAND_READY)
|
|
return -EINTR;
|
|
if ((status & (TPM_STS_DATA_AVAIL | TPM_STS_VALID)) !=
|
|
(TPM_STS_DATA_AVAIL | TPM_STS_VALID))
|
|
return -EAGAIN;
|
|
|
|
debug("...got it;\n");
|
|
|
|
/* Read first 10 bytes, including tag, paramsize, and result */
|
|
size = tpm_tis_i2c_recv_data(dev, buf, TPM_HEADER_SIZE);
|
|
if (size < TPM_HEADER_SIZE) {
|
|
debug("Unable to read header\n");
|
|
return size < 0 ? size : -EIO;
|
|
}
|
|
|
|
expected = get_unaligned_be32(buf + TPM_RSP_SIZE_BYTE);
|
|
if ((size_t)expected > count) {
|
|
debug("Error size=%x, expected=%x, count=%x\n", size, expected,
|
|
count);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
size += tpm_tis_i2c_recv_data(dev, &buf[TPM_HEADER_SIZE],
|
|
expected - TPM_HEADER_SIZE);
|
|
if (size < expected) {
|
|
debug("Unable to read remainder of result\n");
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
rc = tpm_tis_i2c_wait_for_stat(dev, TPM_STS_VALID, chip->timeout_c,
|
|
&status);
|
|
if (rc)
|
|
return rc;
|
|
if (status & TPM_STS_DATA_AVAIL) { /* Retry? */
|
|
debug("Error left over data\n");
|
|
return -EIO;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static int tpm_tis_i2c_send(struct udevice *dev, const u8 *buf, size_t len)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
int rc, status;
|
|
size_t burstcnt;
|
|
size_t count = 0;
|
|
int retry = 0;
|
|
u8 sts = TPM_STS_GO;
|
|
|
|
debug("%s: len=%d\n", __func__, len);
|
|
if (len > TPM_DEV_BUFSIZE)
|
|
return -E2BIG; /* Command is too long for our tpm, sorry */
|
|
|
|
if (tpm_tis_i2c_request_locality(dev, 0) < 0)
|
|
return -EBUSY;
|
|
|
|
status = tpm_tis_i2c_status(dev);
|
|
if ((status & TPM_STS_COMMAND_READY) == 0) {
|
|
rc = tpm_tis_i2c_ready(dev);
|
|
if (rc)
|
|
return rc;
|
|
rc = tpm_tis_i2c_wait_for_stat(dev, TPM_STS_COMMAND_READY,
|
|
chip->timeout_b, &status);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
burstcnt = tpm_tis_i2c_get_burstcount(dev);
|
|
|
|
/* burstcount < 0 -> tpm is busy */
|
|
if (burstcnt < 0)
|
|
return burstcnt;
|
|
|
|
while (count < len) {
|
|
udelay(300);
|
|
if (burstcnt > len - count)
|
|
burstcnt = len - count;
|
|
|
|
#ifdef CONFIG_TPM_TIS_I2C_BURST_LIMITATION
|
|
if (retry && burstcnt > CONFIG_TPM_TIS_I2C_BURST_LIMITATION_LEN)
|
|
burstcnt = CONFIG_TPM_TIS_I2C_BURST_LIMITATION_LEN;
|
|
#endif /* CONFIG_TPM_TIS_I2C_BURST_LIMITATION */
|
|
|
|
rc = tpm_tis_i2c_write(dev, TPM_DATA_FIFO(chip->locality),
|
|
&(buf[count]), burstcnt);
|
|
if (rc == 0)
|
|
count += burstcnt;
|
|
else {
|
|
debug("%s: error\n", __func__);
|
|
if (retry++ > 10)
|
|
return -EIO;
|
|
rc = tpm_tis_i2c_wait_for_stat(dev, TPM_STS_VALID,
|
|
chip->timeout_c,
|
|
&status);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((status & TPM_STS_DATA_EXPECT) == 0)
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
/* Go and do it */
|
|
rc = tpm_tis_i2c_write(dev, TPM_STS(chip->locality), &sts, 1);
|
|
if (rc < 0)
|
|
return rc;
|
|
debug("%s: done, rc=%d\n", __func__, rc);
|
|
|
|
return len;
|
|
}
|
|
|
|
static int tpm_tis_i2c_cleanup(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
|
|
tpm_tis_i2c_ready(dev);
|
|
/*
|
|
* The TPM needs some time to clean up here,
|
|
* so we sleep rather than keeping the bus busy
|
|
*/
|
|
mdelay(2);
|
|
tpm_tis_i2c_release_locality(dev, chip->locality, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tpm_tis_i2c_init(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
u32 vendor;
|
|
u32 expected_did_vid;
|
|
int rc;
|
|
|
|
chip->is_open = 1;
|
|
|
|
/* Default timeouts - these could move to the device tree */
|
|
chip->timeout_a = TIS_SHORT_TIMEOUT_MS;
|
|
chip->timeout_b = TIS_LONG_TIMEOUT_MS;
|
|
chip->timeout_c = TIS_SHORT_TIMEOUT_MS;
|
|
chip->timeout_d = TIS_SHORT_TIMEOUT_MS;
|
|
|
|
rc = tpm_tis_i2c_request_locality(dev, 0);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* Read four bytes from DID_VID register */
|
|
if (tpm_tis_i2c_read(dev, TPM_DID_VID(0), (uchar *)&vendor, 4) < 0) {
|
|
tpm_tis_i2c_release_locality(dev, 0, 1);
|
|
return -EIO;
|
|
}
|
|
|
|
if (chip->chip_type == SLB9635) {
|
|
vendor = be32_to_cpu(vendor);
|
|
expected_did_vid = TPM_TIS_I2C_DID_VID_9635;
|
|
} else {
|
|
/* device id and byte order has changed for newer i2c tpms */
|
|
expected_did_vid = TPM_TIS_I2C_DID_VID_9645;
|
|
}
|
|
|
|
if (chip->chip_type != UNKNOWN && vendor != expected_did_vid) {
|
|
error("Vendor id did not match! ID was %08x\n", vendor);
|
|
return -ENODEV;
|
|
}
|
|
|
|
chip->vend_dev = vendor;
|
|
debug("1.2 TPM (chip type %s device-id 0x%X)\n",
|
|
chip_name[chip->chip_type], vendor >> 16);
|
|
|
|
/*
|
|
* A timeout query to TPM can be placed here.
|
|
* Standard timeout values are used so far
|
|
*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tpm_tis_i2c_open(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
int rc;
|
|
|
|
debug("%s: start\n", __func__);
|
|
if (chip->is_open)
|
|
return -EBUSY;
|
|
rc = tpm_tis_i2c_init(dev);
|
|
if (rc < 0)
|
|
chip->is_open = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int tpm_tis_i2c_close(struct udevice *dev)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
|
|
if (chip->is_open) {
|
|
tpm_tis_i2c_release_locality(dev, chip->locality, 1);
|
|
chip->is_open = 0;
|
|
chip->vend_dev = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tpm_tis_get_desc(struct udevice *dev, char *buf, int size)
|
|
{
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
|
|
if (size < 50)
|
|
return -ENOSPC;
|
|
|
|
return snprintf(buf, size, "1.2 TPM (%s, chip type %s device-id 0x%x)",
|
|
chip->is_open ? "open" : "closed",
|
|
chip_name[chip->chip_type],
|
|
chip->vend_dev >> 16);
|
|
}
|
|
|
|
static int tpm_tis_i2c_probe(struct udevice *dev)
|
|
{
|
|
struct tpm_chip_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
struct tpm_chip *chip = dev_get_priv(dev);
|
|
|
|
chip->chip_type = dev_get_driver_data(dev);
|
|
|
|
/* TODO: These need to be checked and tuned */
|
|
uc_priv->duration_ms[TPM_SHORT] = TIS_SHORT_TIMEOUT_MS;
|
|
uc_priv->duration_ms[TPM_MEDIUM] = TIS_LONG_TIMEOUT_MS;
|
|
uc_priv->duration_ms[TPM_LONG] = TIS_LONG_TIMEOUT_MS;
|
|
uc_priv->retry_time_ms = TPM_TIMEOUT_MS;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct tpm_ops tpm_tis_i2c_ops = {
|
|
.open = tpm_tis_i2c_open,
|
|
.close = tpm_tis_i2c_close,
|
|
.get_desc = tpm_tis_get_desc,
|
|
.send = tpm_tis_i2c_send,
|
|
.recv = tpm_tis_i2c_recv,
|
|
.cleanup = tpm_tis_i2c_cleanup,
|
|
};
|
|
|
|
static const struct udevice_id tpm_tis_i2c_ids[] = {
|
|
{ .compatible = "infineon,slb9635tt", .data = SLB9635 },
|
|
{ .compatible = "infineon,slb9645tt", .data = SLB9645 },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(tpm_tis_i2c) = {
|
|
.name = "tpm_tis_infineon",
|
|
.id = UCLASS_TPM,
|
|
.of_match = tpm_tis_i2c_ids,
|
|
.ops = &tpm_tis_i2c_ops,
|
|
.probe = tpm_tis_i2c_probe,
|
|
.priv_auto_alloc_size = sizeof(struct tpm_chip),
|
|
};
|