mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 06:42:56 +00:00
0914011310
We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org>
387 lines
7.2 KiB
C
387 lines
7.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2013 The Chromium OS Authors.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <dm.h>
|
|
#include <env.h>
|
|
#include <malloc.h>
|
|
#include <asm/unaligned.h>
|
|
#include <linux/string.h>
|
|
#include <tpm-common.h>
|
|
#include "tpm-user-utils.h"
|
|
|
|
static struct udevice *tpm_dev;
|
|
|
|
/**
|
|
* Print a byte string in hexdecimal format, 16-bytes per line.
|
|
*
|
|
* @param data byte string to be printed
|
|
* @param count number of bytes to be printed
|
|
*/
|
|
void print_byte_string(u8 *data, size_t count)
|
|
{
|
|
int i, print_newline = 0;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
printf(" %02x", data[i]);
|
|
print_newline = (i % 16 == 15);
|
|
if (print_newline)
|
|
putc('\n');
|
|
}
|
|
/* Avoid duplicated newline at the end */
|
|
if (!print_newline)
|
|
putc('\n');
|
|
}
|
|
|
|
/**
|
|
* Convert a text string of hexdecimal values into a byte string.
|
|
*
|
|
* @param bytes text string of hexdecimal values with no space
|
|
* between them
|
|
* @param data output buffer for byte string. The caller has to make
|
|
* sure it is large enough for storing the output. If
|
|
* NULL is passed, a large enough buffer will be allocated,
|
|
* and the caller must free it.
|
|
* @param count_ptr output variable for the length of byte string
|
|
* @return pointer to output buffer
|
|
*/
|
|
void *parse_byte_string(char *bytes, u8 *data, size_t *count_ptr)
|
|
{
|
|
char byte[3];
|
|
size_t count, length;
|
|
int i;
|
|
|
|
if (!bytes)
|
|
return NULL;
|
|
length = strlen(bytes);
|
|
count = length / 2;
|
|
|
|
if (!data)
|
|
data = malloc(count);
|
|
if (!data)
|
|
return NULL;
|
|
|
|
byte[2] = '\0';
|
|
for (i = 0; i < length; i += 2) {
|
|
byte[0] = bytes[i];
|
|
byte[1] = bytes[i + 1];
|
|
data[i / 2] = (u8)simple_strtoul(byte, NULL, 16);
|
|
}
|
|
|
|
if (count_ptr)
|
|
*count_ptr = count;
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* report_return_code() - Report any error and return failure or success
|
|
*
|
|
* @param return_code TPM command return code
|
|
* @return value of enum command_ret_t
|
|
*/
|
|
int report_return_code(int return_code)
|
|
{
|
|
if (return_code) {
|
|
printf("Error: %d\n", return_code);
|
|
return CMD_RET_FAILURE;
|
|
} else {
|
|
return CMD_RET_SUCCESS;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return number of values defined by a type string.
|
|
*
|
|
* @param type_str type string
|
|
* @return number of values of type string
|
|
*/
|
|
int type_string_get_num_values(const char *type_str)
|
|
{
|
|
return strlen(type_str);
|
|
}
|
|
|
|
/**
|
|
* Return total size of values defined by a type string.
|
|
*
|
|
* @param type_str type string
|
|
* @return total size of values of type string, or 0 if type string
|
|
* contains illegal type character.
|
|
*/
|
|
size_t type_string_get_space_size(const char *type_str)
|
|
{
|
|
size_t size;
|
|
|
|
for (size = 0; *type_str; type_str++) {
|
|
switch (*type_str) {
|
|
case 'b':
|
|
size += 1;
|
|
break;
|
|
case 'w':
|
|
size += 2;
|
|
break;
|
|
case 'd':
|
|
size += 4;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* Allocate a buffer large enough to hold values defined by a type
|
|
* string. The caller has to free the buffer.
|
|
*
|
|
* @param type_str type string
|
|
* @param count pointer for storing size of buffer
|
|
* @return pointer to buffer or NULL on error
|
|
*/
|
|
void *type_string_alloc(const char *type_str, u32 *count)
|
|
{
|
|
void *data;
|
|
size_t size;
|
|
|
|
size = type_string_get_space_size(type_str);
|
|
if (!size)
|
|
return NULL;
|
|
data = malloc(size);
|
|
if (data)
|
|
*count = size;
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Pack values defined by a type string into a buffer. The buffer must have
|
|
* large enough space.
|
|
*
|
|
* @param type_str type string
|
|
* @param values text strings of values to be packed
|
|
* @param data output buffer of values
|
|
* @return 0 on success, non-0 on error
|
|
*/
|
|
int type_string_pack(const char *type_str, char * const values[],
|
|
u8 *data)
|
|
{
|
|
size_t offset;
|
|
u32 value;
|
|
|
|
for (offset = 0; *type_str; type_str++, values++) {
|
|
value = simple_strtoul(values[0], NULL, 0);
|
|
switch (*type_str) {
|
|
case 'b':
|
|
data[offset] = value;
|
|
offset += 1;
|
|
break;
|
|
case 'w':
|
|
put_unaligned_be16(value, data + offset);
|
|
offset += 2;
|
|
break;
|
|
case 'd':
|
|
put_unaligned_be32(value, data + offset);
|
|
offset += 4;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Read values defined by a type string from a buffer, and write these values
|
|
* to environment variables.
|
|
*
|
|
* @param type_str type string
|
|
* @param data input buffer of values
|
|
* @param vars names of environment variables
|
|
* @return 0 on success, non-0 on error
|
|
*/
|
|
int type_string_write_vars(const char *type_str, u8 *data,
|
|
char * const vars[])
|
|
{
|
|
size_t offset;
|
|
u32 value;
|
|
|
|
for (offset = 0; *type_str; type_str++, vars++) {
|
|
switch (*type_str) {
|
|
case 'b':
|
|
value = data[offset];
|
|
offset += 1;
|
|
break;
|
|
case 'w':
|
|
value = get_unaligned_be16(data + offset);
|
|
offset += 2;
|
|
break;
|
|
case 'd':
|
|
value = get_unaligned_be32(data + offset);
|
|
offset += 4;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
if (env_set_ulong(*vars, value))
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tpm_show_device(void)
|
|
{
|
|
struct udevice *dev;
|
|
char buf[80];
|
|
int n = 0, rc;
|
|
|
|
for_each_tpm_device(dev) {
|
|
rc = tpm_get_desc(dev, buf, sizeof(buf));
|
|
if (rc < 0)
|
|
printf("device %d: can't get info\n", n);
|
|
else
|
|
printf("device %d: %s\n", n, buf);
|
|
|
|
n++;
|
|
};
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tpm_set_device(unsigned long num)
|
|
{
|
|
struct udevice *dev;
|
|
unsigned long n = 0;
|
|
int rc = CMD_RET_FAILURE;
|
|
|
|
for_each_tpm_device(dev) {
|
|
if (n == num) {
|
|
rc = 0;
|
|
break;
|
|
}
|
|
|
|
n++;
|
|
}
|
|
|
|
if (!rc)
|
|
tpm_dev = dev;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int get_tpm(struct udevice **devp)
|
|
{
|
|
int rc;
|
|
|
|
/*
|
|
* To keep a backward compatibility with previous code,
|
|
* if a tpm device is not explicitly set, we set the first one.
|
|
*/
|
|
if (!tpm_dev) {
|
|
rc = tpm_set_device(0);
|
|
if (rc) {
|
|
printf("Couldn't set TPM 0 (rc = %d)\n", rc);
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (devp)
|
|
*devp = tpm_dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int do_tpm_device(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
unsigned long num;
|
|
int rc;
|
|
|
|
if (argc == 2) {
|
|
num = simple_strtoul(argv[1], NULL, 10);
|
|
|
|
rc = tpm_set_device(num);
|
|
if (rc)
|
|
printf("Couldn't set TPM %lu (rc = %d)\n", num, rc);
|
|
} else {
|
|
rc = tpm_show_device();
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int do_tpm_info(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
struct udevice *dev;
|
|
char buf[80];
|
|
int rc;
|
|
|
|
rc = get_tpm(&dev);
|
|
if (rc)
|
|
return rc;
|
|
rc = tpm_get_desc(dev, buf, sizeof(buf));
|
|
if (rc < 0) {
|
|
printf("Couldn't get TPM info (%d)\n", rc);
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
printf("%s\n", buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int do_tpm_init(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
struct udevice *dev;
|
|
int rc;
|
|
|
|
if (argc != 1)
|
|
return CMD_RET_USAGE;
|
|
rc = get_tpm(&dev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return report_return_code(tpm_init(dev));
|
|
}
|
|
|
|
int do_tpm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
struct cmd_tbl *tpm_commands, *cmd;
|
|
struct tpm_chip_priv *priv;
|
|
struct udevice *dev;
|
|
unsigned int size;
|
|
int ret;
|
|
|
|
if (argc < 2)
|
|
return CMD_RET_USAGE;
|
|
|
|
ret = get_tpm(&dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
priv = dev_get_uclass_priv(dev);
|
|
|
|
/* Below getters return NULL if the desired stack is not built */
|
|
switch (priv->version) {
|
|
case TPM_V1:
|
|
tpm_commands = get_tpm1_commands(&size);
|
|
break;
|
|
case TPM_V2:
|
|
tpm_commands = get_tpm2_commands(&size);
|
|
break;
|
|
default:
|
|
tpm_commands = NULL;
|
|
}
|
|
|
|
if (!tpm_commands)
|
|
return CMD_RET_USAGE;
|
|
|
|
cmd = find_cmd_tbl(argv[1], tpm_commands, size);
|
|
if (!cmd)
|
|
return CMD_RET_USAGE;
|
|
|
|
return cmd->cmd(cmdtp, flag, argc - 1, argv + 1);
|
|
}
|