diff options
| -rw-r--r-- | cmd/tpm-common.c | 77 | ||||
| -rw-r--r-- | cmd/tpm-user-utils.h | 1 | ||||
| -rw-r--r-- | cmd/tpm-v1.c | 3 | ||||
| -rw-r--r-- | cmd/tpm-v2.c | 3 |
4 files changed, 80 insertions, 4 deletions
diff --git a/cmd/tpm-common.c b/cmd/tpm-common.c index 38900fb159..42882b16cb 100644 --- a/cmd/tpm-common.c +++ b/cmd/tpm-common.c @@ -12,6 +12,8 @@ #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. * @@ -231,19 +233,86 @@ int type_string_write_vars(const char *type_str, u8 *data, 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; - rc = uclass_first_device_err(UCLASS_TPM, devp); - if (rc) { - printf("Could not find TPM (ret=%d)\n", rc); - return CMD_RET_FAILURE; + /* + * 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(cmd_tbl_t *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(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { struct udevice *dev; diff --git a/cmd/tpm-user-utils.h b/cmd/tpm-user-utils.h index 8ce9861784..a851d9c4af 100644 --- a/cmd/tpm-user-utils.h +++ b/cmd/tpm-user-utils.h @@ -17,6 +17,7 @@ int type_string_pack(const char *type_str, char * const values[], u8 *data); int type_string_write_vars(const char *type_str, u8 *data, char * const vars[]); int get_tpm(struct udevice **devp); +int do_tpm_device(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); int do_tpm_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); int do_tpm_info(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); int do_tpm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); diff --git a/cmd/tpm-v1.c b/cmd/tpm-v1.c index 2807331524..bc34e0654f 100644 --- a/cmd/tpm-v1.c +++ b/cmd/tpm-v1.c @@ -645,6 +645,7 @@ TPM_COMMAND_NO_ARG(tpm_physical_enable) TPM_COMMAND_NO_ARG(tpm_physical_disable) static cmd_tbl_t tpm1_commands[] = { + U_BOOT_CMD_MKENT(device, 0, 1, do_tpm_device, "", ""), U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""), U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_init, "", ""), U_BOOT_CMD_MKENT(startup, 0, 1, @@ -721,6 +722,8 @@ 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" +" device [num device]\n" +" - Show all devices or set the specified device\n" " info - Show information about the TPM\n" " init\n" " - Put TPM into a state where it waits for 'startup' command.\n" diff --git a/cmd/tpm-v2.c b/cmd/tpm-v2.c index 459a955d29..0cd39821bf 100644 --- a/cmd/tpm-v2.c +++ b/cmd/tpm-v2.c @@ -354,6 +354,7 @@ static int do_tpm_pcr_setauthvalue(cmd_tbl_t *cmdtp, int flag, } static cmd_tbl_t tpm2_commands[] = { + U_BOOT_CMD_MKENT(device, 0, 1, do_tpm_device, "", ""), U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""), U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_init, "", ""), U_BOOT_CMD_MKENT(startup, 0, 1, do_tpm2_startup, "", ""), @@ -381,6 +382,8 @@ cmd_tbl_t *get_tpm2_commands(unsigned int *size) U_BOOT_CMD(tpm2, CONFIG_SYS_MAXARGS, 1, do_tpm, "Issue a TPMv2.x command", "<command> [<arguments>]\n" "\n" +"device [num device]\n" +" Show all devices or set the specified device\n" "info\n" " Show information about the TPM.\n" "init\n" |