Re: [U-Boot] [PATCH 18/25] tpm: Report tpm errors on the command line

Hi Simon,

Good one ! Acked-by: Christophe Ricard christophe-h.ricard@st.com

Best Regards Christophe

On 11/08/2015 16:48, Simon Glass wrote:

When a 'tpm' command fails, we set the return code but give no indication of failure. This can be confusing.

Add an error message when any tpm command fails.

Signed-off-by: Simon Glass sjg@chromium.org

common/cmd_tpm.c | 46 ++++++++++++++++++++++++---------------------- 1 file changed, 24 insertions(+), 22 deletions(-)

diff --git a/common/cmd_tpm.c b/common/cmd_tpm.c index 274e3cd..f48ab04 100644 --- a/common/cmd_tpm.c +++ b/common/cmd_tpm.c @@ -80,17 +80,19 @@ static void *parse_byte_string(char *bytes, uint8_t *data, size_t *count_ptr) }

/**

• • Convert TPM command return code to U-Boot command error codes.

• • 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
  */

-static int convert_return_code(uint32_t return_code) +static int report_return_code(int return_code) {

• if (return_code)

• if (return_code < 0) {

• printf("Error: %d\n", return_code);
  

  return CMD_RET_FAILURE;

• else

• } else { return CMD_RET_SUCCESS;

• } }

  /**

@@ -252,7 +254,7 @@ static int do_tpm_startup(cmd_tbl_t *cmdtp, int flag, return CMD_RET_FAILURE; }

• return convert_return_code(tpm_startup(mode));

• return report_return_code(tpm_startup(mode)); }

  static int do_tpm_nv_define_space(cmd_tbl_t *cmdtp, int flag,

@@ -266,7 +268,7 @@ static int do_tpm_nv_define_space(cmd_tbl_t *cmdtp, int flag, perm = simple_strtoul(argv[2], NULL, 0); size = simple_strtoul(argv[3], NULL, 0);

• return convert_return_code(tpm_nv_define_space(index, perm, size));

• return report_return_code(tpm_nv_define_space(index, perm, size)); }

  static int do_tpm_nv_read_value(cmd_tbl_t *cmdtp, int flag,

@@ -287,7 +289,7 @@ static int do_tpm_nv_read_value(cmd_tbl_t *cmdtp, int flag, print_byte_string(data, count); }

• return convert_return_code(rc);

• return report_return_code(rc); }

  static int do_tpm_nv_write_value(cmd_tbl_t *cmdtp, int flag,

@@ -309,7 +311,7 @@ static int do_tpm_nv_write_value(cmd_tbl_t *cmdtp, int flag, rc = tpm_nv_write_value(index, data, count); free(data);

• return convert_return_code(rc);

• return report_return_code(rc); }

  static int do_tpm_extend(cmd_tbl_t *cmdtp, int flag,

@@ -332,7 +334,7 @@ static int do_tpm_extend(cmd_tbl_t *cmdtp, int flag, print_byte_string(out_digest, sizeof(out_digest)); }

• return convert_return_code(rc);

• return report_return_code(rc); }

  static int do_tpm_pcr_read(cmd_tbl_t *cmdtp, int flag,

@@ -353,7 +355,7 @@ static int do_tpm_pcr_read(cmd_tbl_t *cmdtp, int flag, print_byte_string(data, count); }

• return convert_return_code(rc);

• return report_return_code(rc); }

  static int do_tpm_tsc_physical_presence(cmd_tbl_t *cmdtp, int flag,

@@ -365,7 +367,7 @@ static int do_tpm_tsc_physical_presence(cmd_tbl_t *cmdtp, int flag, return CMD_RET_USAGE; presence = (uint16_t)simple_strtoul(argv[1], NULL, 0);

• return convert_return_code(tpm_tsc_physical_presence(presence));

• return report_return_code(tpm_tsc_physical_presence(presence)); }

  static int do_tpm_read_pubek(cmd_tbl_t *cmdtp, int flag,

@@ -385,7 +387,7 @@ static int do_tpm_read_pubek(cmd_tbl_t *cmdtp, int flag, print_byte_string(data, count); }

• return convert_return_code(rc);

• return report_return_code(rc); }

  static int do_tpm_physical_set_deactivated(cmd_tbl_t *cmdtp, int flag,

@@ -397,7 +399,7 @@ static int do_tpm_physical_set_deactivated(cmd_tbl_t *cmdtp, int flag, return CMD_RET_USAGE; state = (uint8_t)simple_strtoul(argv[1], NULL, 0);

• return convert_return_code(tpm_physical_set_deactivated(state));

• return report_return_code(tpm_physical_set_deactivated(state)); }

  static int do_tpm_get_capability(cmd_tbl_t *cmdtp, int flag,

@@ -420,7 +422,7 @@ static int do_tpm_get_capability(cmd_tbl_t *cmdtp, int flag, print_byte_string(cap, count); }

• return convert_return_code(rc);

• return report_return_code(rc); }

  #define TPM_COMMAND_NO_ARG(cmd) \

@@ -429,7 +431,7 @@ static int do_##cmd(cmd_tbl_t *cmdtp, int flag, \ { \ if (argc != 1) \ return CMD_RET_USAGE; \

• return convert_return_code(cmd()); \

• return report_return_code(cmd()); \ }

  TPM_COMMAND_NO_ARG(tpm_init)

@@ -485,7 +487,7 @@ static int do_tpm_raw_transfer(cmd_tbl_t *cmdtp, int flag, print_byte_string(response, response_length); }

• return convert_return_code(rc);

• return report_return_code(rc); }

  static int do_tpm_nv_define(cmd_tbl_t *cmdtp, int flag,

@@ -503,7 +505,7 @@ static int do_tpm_nv_define(cmd_tbl_t *cmdtp, int flag, index = simple_strtoul(argv[2], NULL, 0); perm = simple_strtoul(argv[3], NULL, 0);

• return convert_return_code(tpm_nv_define_space(index, perm, size));

• return report_return_code(tpm_nv_define_space(index, perm, size)); }

  static int do_tpm_nv_read(cmd_tbl_t *cmdtp, int flag,

@@ -532,7 +534,7 @@ static int do_tpm_nv_read(cmd_tbl_t *cmdtp, int flag, } free(data);

• return convert_return_code(err);

• return report_return_code(err); }

  static int do_tpm_nv_write(cmd_tbl_t *cmdtp, int flag,

@@ -560,7 +562,7 @@ static int do_tpm_nv_write(cmd_tbl_t *cmdtp, int flag, err = tpm_nv_write_value(index, data, count); free(data);

• return convert_return_code(err);

• return report_return_code(err); }

  #ifdef CONFIG_TPM_AUTH_SESSIONS

@@ -572,7 +574,7 @@ static int do_tpm_oiap(cmd_tbl_t *cmdtp, int flag,

err = tpm_oiap(&auth_handle);

• return convert_return_code(err);

• return report_return_code(err); }

  static int do_tpm_load_key2_oiap(cmd_tbl_t *cmdtp, int flag,

@@ -597,7 +599,7 @@ static int do_tpm_load_key2_oiap(cmd_tbl_t *cmdtp, int flag, if (!err) printf("Key handle is 0x%x\n", key_handle);

• return convert_return_code(err);

• return report_return_code(err); }

  static int do_tpm_get_pub_key_oiap(cmd_tbl_t *cmdtp, int flag,

@@ -622,7 +624,7 @@ static int do_tpm_get_pub_key_oiap(cmd_tbl_t *cmdtp, int flag, printf("dump of received pub key structure:\n"); print_byte_string(pub_key_buffer, pub_key_len); }

• return convert_return_code(err);

• return report_return_code(err); }

  TPM_COMMAND_NO_ARG(tpm_end_oiap)