#include <commonlib/endian.h>
#include <commonlib/helpers.h>
#include <console/console.h>
#include <delay.h>
#include <device/i2c_simple.h>
#include <drivers/tpm/cr50.h>
#include <endian.h>
#include <security/tpm/tis.h>
#include <string.h>
#include <types.h>
#include <timer.h>
#include "tpm.h"

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Data Structures
struct	tpm_inf_dev

Macros
#define	CR50_MAX_BUFSIZE 63

#define	CR50_TIMEOUT_INIT_MS 30000 /* Very long timeout for TPM init */

#define	CR50_TIMEOUT_LONG_MS 2000 /* Long timeout while waiting for TPM */

#define	CR50_TIMEOUT_SHORT_MS 2 /* Short timeout during transactions */

#define	CR50_TIMEOUT_NOIRQ_MS 20 /* Timeout for TPM ready without IRQ */

#define	CR50_TIMEOUT_IRQ_MS 100 /* Timeout for TPM ready with IRQ */

#define	CR50_DID_VID 0x00281ae0L

#define	TI50_DID_VID 0x504a6666L

Functions
__weak int	tis_plat_irq_status (void)

static int	cr50_i2c_wait_tpm_ready (void)

static int	cr50_i2c_read (uint8_t addr, uint8_t *buffer, size_t len)

static int	cr50_i2c_write (uint8_t addr, const uint8_t *buffer, size_t len)

static int	process_reset (void)

static int	claim_locality (void)

static uint8_t	cr50_i2c_tis_status (struct tpm_chip *chip)

static void	cr50_i2c_tis_ready (struct tpm_chip *chip)

static int	cr50_i2c_wait_burststs (struct tpm_chip chip, uint8_t mask, size_t burst, int *status)

static int	cr50_i2c_tis_recv (struct tpm_chip chip, uint8_t buf, size_t buf_len)

static int	cr50_i2c_tis_send (struct tpm_chip chip, uint8_t buf, size_t len)

static void	cr50_vendor_init (struct tpm_chip *chip)

int	tpm_vendor_probe (unsigned int bus, uint32_t addr)

static int	cr50_i2c_probe (struct tpm_chip chip, uint32_t did_vid)

int	tpm_vendor_init (struct tpm_chip *chip, unsigned int bus, uint32_t dev_addr)

void	tpm_vendor_cleanup (struct tpm_chip *chip)

enum cb_err	tis_vendor_write (unsigned int addr, const void *buffer, size_t bytes)

enum cb_err	tis_vendor_read (unsigned int addr, void *buffer, size_t bytes)

Variables
static struct tpm_inf_dev	tpm_dev

Macro Definition Documentation

◆ CR50_DID_VID

#define CR50_DID_VID 0x00281ae0L

Definition at line 38 of file cr50.c.

◆ CR50_MAX_BUFSIZE

#define CR50_MAX_BUFSIZE 63

Definition at line 32 of file cr50.c.

◆ CR50_TIMEOUT_INIT_MS

#define CR50_TIMEOUT_INIT_MS 30000 /* Very long timeout for TPM init */

Definition at line 33 of file cr50.c.

◆ CR50_TIMEOUT_IRQ_MS

#define CR50_TIMEOUT_IRQ_MS 100 /* Timeout for TPM ready with IRQ */

Definition at line 37 of file cr50.c.

◆ CR50_TIMEOUT_LONG_MS

#define CR50_TIMEOUT_LONG_MS 2000 /* Long timeout while waiting for TPM */

Definition at line 34 of file cr50.c.

◆ CR50_TIMEOUT_NOIRQ_MS

#define CR50_TIMEOUT_NOIRQ_MS 20 /* Timeout for TPM ready without IRQ */

Definition at line 36 of file cr50.c.

◆ CR50_TIMEOUT_SHORT_MS

#define CR50_TIMEOUT_SHORT_MS 2 /* Short timeout during transactions */

Definition at line 35 of file cr50.c.

◆ TI50_DID_VID

#define TI50_DID_VID 0x504a6666L

Definition at line 39 of file cr50.c.

Function Documentation

◆ claim_locality()

static int claim_locality ( void )

static

Definition at line 213 of file cr50.c.

References BIOS_INFO, cr50_i2c_read(), cr50_i2c_write(), mask, printk, TPM_ACCESS, TPM_ACCESS_ACTIVE_LOCALITY, TPM_ACCESS_REQUEST_USE, and TPM_ACCESS_VALID.

Referenced by tpm_vendor_init().

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◆ cr50_i2c_probe()

static int cr50_i2c_probe	(	struct tpm_chip *	chip,
		uint32_t *	did_vid
	)

static

Definition at line 441 of file cr50.c.

References BIOS_ERR, BIOS_INFO, CR50_DID_VID, cr50_i2c_read(), mdelay(), printk, TI50_DID_VID, and TPM_DID_VID.

Referenced by tpm_vendor_init().

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◆ cr50_i2c_read()

static int cr50_i2c_read	(	uint8_t	addr,
		uint8_t *	buffer,
		size_t	len
	)

static

Definition at line 91 of file cr50.c.

References addr, tpm_inf_dev::addr, BIOS_ERR, buffer, tpm_inf_dev::bus, cr50_i2c_wait_tpm_ready(), i2c_read_raw(), i2c_write_raw(), printk, tis_plat_irq_status(), and tpm_dev.

Referenced by claim_locality(), cr50_i2c_probe(), cr50_i2c_tis_recv(), cr50_i2c_tis_status(), cr50_i2c_wait_burststs(), and process_reset().

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◆ cr50_i2c_tis_ready()

static void cr50_i2c_tis_ready ( struct tpm_chip * chip )

static

Definition at line 255 of file cr50.c.

References buf, chip, cr50_i2c_write(), CR50_TIMEOUT_SHORT_MS, tpm_vendor_specific::locality, mdelay(), TPM_STS, TPM_STS_COMMAND_READY, and tpm_chip::vendor.

Referenced by cr50_i2c_tis_recv(), cr50_i2c_tis_send(), and cr50_vendor_init().

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◆ cr50_i2c_tis_recv()

static int cr50_i2c_tis_recv	(	struct tpm_chip *	chip,
		uint8_t *	buf,
		size_t	buf_len
	)

static

Definition at line 294 of file cr50.c.

References addr, BIOS_ERR, buf, chip, cr50_i2c_read(), cr50_i2c_tis_ready(), cr50_i2c_tis_status(), cr50_i2c_wait_burststs(), stopwatch::current, tpm_vendor_specific::locality, mask, MIN, printk, read_be32(), TPM_DATA_FIFO, TPM_HEADER_SIZE, TPM_RSP_SIZE_BYTE, TPM_STS_COMMAND_READY, TPM_STS_DATA_AVAIL, TPM_STS_VALID, and tpm_chip::vendor.

Referenced by cr50_vendor_init().

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◆ cr50_i2c_tis_send()

static int cr50_i2c_tis_send	(	struct tpm_chip *	chip,
		uint8_t *	buf,
		size_t	len
	)

static

Definition at line 357 of file cr50.c.

References BIOS_ERR, buf, chip, cr50_i2c_tis_ready(), cr50_i2c_tis_status(), cr50_i2c_wait_burststs(), cr50_i2c_write(), CR50_TIMEOUT_LONG_MS, tpm_vendor_specific::locality, mask, MIN, printk, stopwatch_expired(), stopwatch_init_msecs_expire(), TPM_DATA_FIFO, TPM_STS, TPM_STS_COMMAND_READY, TPM_STS_DATA_EXPECT, TPM_STS_GO, TPM_STS_VALID, and tpm_chip::vendor.

Referenced by cr50_vendor_init().

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◆ cr50_i2c_tis_status()

static uint8_t cr50_i2c_tis_status ( struct tpm_chip * chip )

static

Definition at line 243 of file cr50.c.

References BIOS_ERR, buf, chip, cr50_i2c_read(), tpm_vendor_specific::locality, printk, TPM_STS, and tpm_chip::vendor.

Referenced by cr50_i2c_tis_recv(), cr50_i2c_tis_send(), and cr50_vendor_init().

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◆ cr50_i2c_wait_burststs()

static int cr50_i2c_wait_burststs	(	struct tpm_chip *	chip,
		uint8_t	mask,
		size_t *	burst,
		int *	status
	)

static

Definition at line 264 of file cr50.c.

References BIOS_ERR, buf, chip, cr50_i2c_read(), CR50_MAX_BUFSIZE, CR50_TIMEOUT_LONG_MS, CR50_TIMEOUT_SHORT_MS, tpm_vendor_specific::locality, mask, mdelay(), printk, read_le16(), stopwatch_expired(), stopwatch_init_msecs_expire(), TPM_STS, and tpm_chip::vendor.

Referenced by cr50_i2c_tis_recv(), and cr50_i2c_tis_send().

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◆ cr50_i2c_wait_tpm_ready()

static int cr50_i2c_wait_tpm_ready ( void )

static

Definition at line 64 of file cr50.c.

References BIOS_ERR, CR50_TIMEOUT_IRQ_MS, printk, stopwatch_expired(), stopwatch_init_msecs_expire(), and tis_plat_irq_status().

Referenced by cr50_i2c_read(), and cr50_i2c_write().

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◆ cr50_i2c_write()

static int cr50_i2c_write	(	uint8_t	addr,
		const uint8_t *	buffer,
		size_t	len
	)

static

Definition at line 131 of file cr50.c.

References addr, tpm_inf_dev::addr, BIOS_ERR, tpm_inf_dev::buf, buffer, tpm_inf_dev::bus, cr50_i2c_wait_tpm_ready(), CR50_MAX_BUFSIZE, i2c_write_raw(), memcpy(), printk, tis_plat_irq_status(), and tpm_dev.

Referenced by claim_locality(), cr50_i2c_tis_ready(), and cr50_i2c_tis_send().

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◆ cr50_vendor_init()

static void cr50_vendor_init ( struct tpm_chip * chip )

static

Definition at line 424 of file cr50.c.

References tpm_vendor_specific::cancel, chip, cr50_i2c_tis_ready(), cr50_i2c_tis_recv(), cr50_i2c_tis_send(), cr50_i2c_tis_status(), memset(), tpm_vendor_specific::recv, tpm_vendor_specific::req_canceled, tpm_vendor_specific::req_complete_mask, tpm_vendor_specific::req_complete_val, tpm_vendor_specific::send, tpm_vendor_specific::status, TPM_STS_COMMAND_READY, TPM_STS_DATA_AVAIL, TPM_STS_VALID, and tpm_chip::vendor.

Referenced by tpm_vendor_init().

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◆ process_reset()

static int process_reset ( void )

static

Definition at line 162 of file cr50.c.

References BIOS_ERR, BIOS_INFO, cr50_i2c_read(), CR50_TIMEOUT_INIT_MS, mask, mdelay(), printk, stopwatch_duration_msecs(), stopwatch_expired(), stopwatch_init_msecs_expire(), TPM_ACCESS, TPM_ACCESS_ACTIVE_LOCALITY, and TPM_ACCESS_VALID.

Referenced by tpm_vendor_init().

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◆ tis_plat_irq_status()

__weak int tis_plat_irq_status ( void )

Definition at line 49 of file cr50.c.

References BIOS_WARNING, CR50_TIMEOUT_NOIRQ_MS, mdelay(), and printk.

Referenced by cr50_i2c_read(), cr50_i2c_wait_tpm_ready(), and cr50_i2c_write().

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◆ tis_vendor_read()

enum cb_err tis_vendor_read	(	unsigned int	addr,
		void *	buffer,
		size_t	bytes
	)

Definition at line 513 of file cr50.c.

Referenced by cr50_get_board_cfg().

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◆ tis_vendor_write()

enum cb_err tis_vendor_write	(	unsigned int	addr,
		const void *	buffer,
		size_t	bytes
	)

Definition at line 513 of file cr50.c.

◆ tpm_vendor_cleanup()

void tpm_vendor_cleanup ( struct tpm_chip * chip )

Definition at line 513 of file cr50.c.

Referenced by tis_close().

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◆ tpm_vendor_init()

int tpm_vendor_init	(	struct tpm_chip *	chip,
		unsigned int	bus,
		uint32_t	dev_addr
	)

Definition at line 476 of file cr50.c.

References tpm_inf_dev::addr, BIOS_DEBUG, BIOS_ERR, tpm_inf_dev::bus, chip, claim_locality(), cr50_get_firmware_version(), cr50_i2c_probe(), cr50_set_board_cfg(), cr50_vendor_init(), ENV_BOOTBLOCK, ENV_SEPARATE_VERSTAGE, tpm_chip::is_open, NULL, printk, process_reset(), tpm_dev, and tpm_first_access_this_boot().

Referenced by tis_open().

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◆ tpm_vendor_probe()

int tpm_vendor_probe	(	unsigned int	bus,
		uint32_t	addr
	)

Definition at line 436 of file cr50.c.

Referenced by tis_init().

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Variable Documentation

◆ tpm_dev

struct tpm_inf_dev tpm_dev

static

Definition at line 1 of file cr50.c.

Referenced by cr50_i2c_read(), cr50_i2c_write(), and tpm_vendor_init().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ CR50_DID_VID

◆ CR50_MAX_BUFSIZE

◆ CR50_TIMEOUT_INIT_MS

◆ CR50_TIMEOUT_IRQ_MS

◆ CR50_TIMEOUT_LONG_MS

◆ CR50_TIMEOUT_NOIRQ_MS

◆ CR50_TIMEOUT_SHORT_MS

◆ TI50_DID_VID

Function Documentation

◆ claim_locality()

◆ cr50_i2c_probe()

◆ cr50_i2c_read()

◆ cr50_i2c_tis_ready()

◆ cr50_i2c_tis_recv()

◆ cr50_i2c_tis_send()

◆ cr50_i2c_tis_status()

◆ cr50_i2c_wait_burststs()

◆ cr50_i2c_wait_tpm_ready()

◆ cr50_i2c_write()

◆ cr50_vendor_init()

◆ process_reset()

◆ tis_plat_irq_status()

◆ tis_vendor_read()

◆ tis_vendor_write()

◆ tpm_vendor_cleanup()

◆ tpm_vendor_init()

◆ tpm_vendor_probe()

Variable Documentation

◆ tpm_dev