tpm: Report tpm errors on the command line
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>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/common/cmd_tpm.c b/common/cmd_tpm.c
index bad2006..65e7371 100644
--- a/common/cmd_tpm.c
+++ b/common/cmd_tpm.c
@@ -80,17 +80,19 @@
}
/**
- * 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) {
+ printf("Error: %d\n", return_code);
return CMD_RET_FAILURE;
- else
+ } else {
return CMD_RET_SUCCESS;
+ }
}
/**
@@ -252,7 +254,7 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
{ \
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 @@
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 @@
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 @@
}
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 @@
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 @@
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 @@
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 @@
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)