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dm: tpm: Remove every compilation switch for TPM driver model

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As every TPM drivers support UCLASS_TPM, we can only rely on DM_TPM
functions.

This simplify a bit the code.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Christophe Ricard 2015-10-06 22:54:43 +02:00 committed by Simon Glass
parent 302c5dba0a
commit c2b0f600a1
6 changed files with 4 additions and 97 deletions
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13
common/cmd_tpm.c
View file

@ -443,7 +443,6 @@ TPM_COMMAND_NO_ARG(tpm_force_clear)
TPM_COMMAND_NO_ARG(tpm_physical_enable)
TPM_COMMAND_NO_ARG(tpm_physical_disable)
#ifdef CONFIG_DM_TPM
static int get_tpm(struct udevice **devp)
{
int rc;
@ -476,11 +475,11 @@ static int do_tpm_info(cmd_tbl_t *cmdtp, int flag, int argc,
return 0;
}
#endif
static int do_tpm_raw_transfer(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
struct udevice *dev;
void *command;
uint8_t response[1024];
size_t count, response_length = sizeof(response);
@ -492,17 +491,11 @@ static int do_tpm_raw_transfer(cmd_tbl_t *cmdtp, int flag,
return CMD_RET_FAILURE;
}
#ifdef CONFIG_DM_TPM
struct udevice *dev;
rc = get_tpm(&dev);
if (rc)
return rc;
rc = tpm_xfer(dev, command, count, response, &response_length);
#else
rc = tis_sendrecv(command, count, response, &response_length);
#endif
free(command);
if (!rc) {
puts("tpm response:\n");
@ -657,9 +650,7 @@ TPM_COMMAND_NO_ARG(tpm_end_oiap)
U_BOOT_CMD_MKENT(cmd, 0, 1, do_tpm_ ## cmd, "", "")
static cmd_tbl_t tpm_commands[] = {
#ifdef CONFIG_DM_TPM
U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""),
#endif
U_BOOT_CMD_MKENT(init, 0, 1,
do_tpm_init, "", ""),
U_BOOT_CMD_MKENT(startup, 0, 1,
@ -730,9 +721,7 @@ U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm,
"cmd args...\n"
" - Issue TPM command <cmd> with arguments <args...>.\n"
"Admin Startup and State Commands:\n"
#ifdef CONFIG_DM_TPM
" info - Show information about the TPM\n"
#endif
" init\n"
" - Put TPM into a state where it waits for 'startup' command.\n"
" startup mode\n"

1
drivers/tpm/tpm_tis_infineon.c
View file

@ -24,7 +24,6 @@
#include <dm.h>
#include <fdtdec.h>
#include <i2c.h>
#include <tis.h>
#include <tpm.h>
#include <asm-generic/errno.h>
#include <linux/compiler.h>

1
drivers/tpm/tpm_tis_lpc.c
View file

@ -16,7 +16,6 @@
#include <common.h>
#include <dm.h>
#include <mapmem.h>
#include <tis.h>
#include <tpm.h>
#include <asm/io.h>

60
include/tis.h
View file

@ -1,60 +0,0 @@
/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __TIS_H
#define __TIS_H
#ifndef CONFIG_DM_TPM
#include <common.h>
/* Low-level interface to access TPM */
/*
* tis_init()
*
* Initialize the TPM device. Returns 0 on success or -1 on
* failure (in case device probing did not succeed).
*/
int tis_init(void);
/*
* tis_open()
*
* Requests access to locality 0 for the caller. After all commands have been
* completed the caller is supposed to call tis_close().
*
* Returns 0 on success, -1 on failure.
*/
int tis_open(void);
/*
* tis_close()
*
* terminate the currect session with the TPM by releasing the locked
* locality. Returns 0 on success of -1 on failure (in case lock
* removal did not succeed).
*/
int tis_close(void);
/*
* tis_sendrecv()
*
* Send the requested data to the TPM and then try to get its response
*
* @sendbuf - buffer of the data to send
* @send_size size of the data to send
* @recvbuf - memory to save the response to
* @recv_len - pointer to the size of the response buffer
*
* Returns 0 on success (and places the number of response bytes at recv_len)
* or -1 on failure.
*/
int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf,
size_t *recv_len);
#endif
#endif /* __TIS_H */

6
include/tpm.h
View file

@ -8,8 +8,6 @@
#ifndef __TPM_H
#define __TPM_H
#include <tis.h>
/*
* Here is a partial implementation of TPM commands. Please consult TCG Main
* Specification for definitions of TPM commands.
@ -196,8 +194,6 @@ struct tpm_permanent_flags {
u8 disable_full_da_logic_info;
} __packed;
#ifdef CONFIG_DM_TPM
/* Max buffer size supported by our tpm */
#define TPM_DEV_BUFSIZE 1260
@ -375,8 +371,6 @@ int tpm_get_desc(struct udevice *dev, char *buf, int size);
int tpm_xfer(struct udevice *dev, const uint8_t *sendbuf, size_t send_size,
uint8_t *recvbuf, size_t *recv_size);
#endif /* CONFIG_DM_TPM */
/**
* Initialize TPM device. It must be called before any TPM commands.
*

20
lib/tpm.c
View file

@ -7,7 +7,6 @@
#include <common.h>
#include <dm.h>
#include <tis.h>
#include <tpm.h>
#include <asm/unaligned.h>
#include <u-boot/sha1.h>
@ -230,6 +229,8 @@ static uint32_t tpm_return_code(const void *response)
static uint32_t tpm_sendrecv_command(const void *command,
void *response, size_t *size_ptr)
{
struct udevice *dev;
int ret;
uint8_t response_buffer[COMMAND_BUFFER_SIZE];
size_t response_length;
uint32_t err;
@ -240,19 +241,13 @@ static uint32_t tpm_sendrecv_command(const void *command,
response = response_buffer;
response_length = sizeof(response_buffer);
}
#ifdef CONFIG_DM_TPM
struct udevice *dev;
int ret;
ret = uclass_first_device(UCLASS_TPM, &dev);
if (ret)
return ret;
err = tpm_xfer(dev, command, tpm_command_size(command),
response, &response_length);
#else
err = tis_sendrecv(command, tpm_command_size(command),
response, &response_length);
#endif
if (err < 0)
return TPM_LIB_ERROR;
if (size_ptr)
@ -264,21 +259,12 @@ static uint32_t tpm_sendrecv_command(const void *command,
int tpm_init(void)
{
int err;
#ifdef CONFIG_DM_TPM
struct udevice *dev;
err = uclass_first_device(UCLASS_TPM, &dev);
if (err)
return err;
return tpm_open(dev);
#else
err = tis_init();
if (err)
return err;
return tis_open();
#endif
}
uint32_t tpm_startup(enum tpm_startup_type mode)