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/*
* errors.c: parse and return status of Intel(r) TXT error codes
*
* Copyright (c) 2003-2011, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <config.h>
#include <efibase.h>
#include <stdbool.h>
#include <types.h>
#include <string.h>
#include <printk.h>
#include <atomic.h>
#include <uuid.h>
#include <tb_error.h>
#include <txt/txt.h>
#include <txt/config_regs.h>
#include <txt/errorcode.h>
static void display_errors(void)
{
txt_errorcode_t err;
txt_ests_t ests;
txt_e2sts_t e2sts;
txt_errorcode_sw_t sw_err;
acmod_error_t acmod_err;
/*
* display TXT.ERRORODE error
*/
err = (txt_errorcode_t)read_pub_config_reg(TXTCR_ERRORCODE);
if (err._raw == 0 || err._raw == 0xc0000001 || err._raw == 0xc0000009)
printk(TBOOT_INFO"TXT.ERRORCODE: 0x%Lx\n", err._raw);
else
printk(TBOOT_ERR"TXT.ERRORCODE: 0x%Lx\n", err._raw);
/* AC module error (don't know how to parse other errors) */
if ( err.valid ) {
if ( err.external == 0 ) /* processor error */
printk(TBOOT_ERR"\t processor error 0x%x\n", (uint32_t)err.type);
else { /* external SW error */
sw_err._raw = err.type;
if ( sw_err.src == 1 ) /* unknown SW error */
printk(TBOOT_ERR"unknown SW error 0x%x:0x%x\n", sw_err.err1, sw_err.err2);
else { /* ACM error */
acmod_err._raw = sw_err._raw;
if ( acmod_err._raw == 0x0 || acmod_err._raw == 0x1 ||
acmod_err._raw == 0x9 )
printk(TBOOT_INFO"AC module error : acm_type=0x%x, progress=0x%02x, "
"error=0x%x\n", acmod_err.acm_type, acmod_err.progress,
acmod_err.error);
else
printk(TBOOT_ERR"AC module error : acm_type=0x%x, progress=0x%02x, "
"error=0x%x\n", acmod_err.acm_type, acmod_err.progress,
acmod_err.error);
/* error = 0x0a, progress = 0x0d => TPM error */
if ( acmod_err.error == 0x0a && acmod_err.progress == 0x0d )
printk(TBOOT_ERR"TPM error code = 0x%x\n", acmod_err.tpm_err);
/* progress = 0x10 => LCP2 error */
else if ( acmod_err.progress == 0x10 && acmod_err.lcp_minor != 0 )
printk(TBOOT_ERR"LCP2 error: minor error = 0x%x, index = %u\n",
acmod_err.lcp_minor, acmod_err.lcp_index);
}
}
}
/*
* display TXT.ESTS error
*/
ests = (txt_ests_t)read_pub_config_reg(TXTCR_ESTS);
if (ests._raw == 0)
printk(TBOOT_INFO"TXT.ESTS: 0x%Lx\n", ests._raw);
else
printk(TBOOT_ERR"TXT.ESTS: 0x%Lx\n", ests._raw);
/*
* display TXT.E2STS error
*/
e2sts = (txt_e2sts_t)read_pub_config_reg(TXTCR_E2STS);
if (e2sts._raw == 0 || e2sts._raw == 0x200000000)
printk(TBOOT_INFO"TXT.E2STS: 0x%Lx\n", e2sts._raw);
else
printk(TBOOT_ERR"TXT.E2STS: 0x%Lx\n", e2sts._raw);
}
bool txt_get_error(void)
{
txt_errorcode_t err;
display_errors();
err = (txt_errorcode_t)read_pub_config_reg(TXTCR_ERRORCODE);
if ( err.valid )
return false;
else
return true;
}
#define CLASS_ACM_ENTRY 0x1
enum ENUM_ACM_ENTRY {
ERR_LAUNCH = 1,
ERR_NEM_ENABLED,
ERR_CPU_LT_TYPE,
ERR_DEV_ID,
ERR_CPU_ID,
ERR_NO_UCODE_UPDATE ,
ERR_DEBUG_MCU,
ERR_DMI_LINK_DOWN,
ERR_ACM_REVOKED,
ERR_TPM_DOUBLE_AUX
};
#define CLASS_TPM_ACCESS 0x4
enum ENUM_TPM_ACCESS {
ERR_OK, /* Indicator of successful execution of the function.*/
ERR_TPM_ERROR, /* TPM returned an error */
ERR_LOCALITY,
ERR_ACC_INVLD,
ERR_NV_UNLOCKED, /* TPM NV RAM not locked */
ERR_TPM_DISABLED, /* TPM is disabled */
ERR_TPM_DEACTIVATED, /* TPM is deactivated */
ERR_TPM_NV_INDEX_INVALID, /* TPM NV indices incorrectly defined */
ERR_TPM_INCOMPET_BIOSAC, /* Incompatible BIOS ACM */
ERR_TPM_INCOMPET_AUXREV, /* Incompatible AUX revision */
ERR_TPM_INBUF_TOO_SHORT, /* Input buffer is too short */
ERR_TPM_OUTBUF_TOO_SHORT, /* Output buffer is too short */
ERR_TPM_NV_PO_INDEX_INVALID = 0x10,
/*
* Errors returned by TPM driver
*/
ERR_OUTPUT_BUFFER_TOO_SHORT = 0x1B, /* Output buffer for the TPM response to short */
ERR_INVALID_INPUT_PARA = 0x1C, /* Input parameter for the function invalid */
ERR_INVALID_RESPONSE_WR = 0x1D, /* The response from the TPM was invalid */
ERR_INVALID_RESPONSE_RD = 0x1E, /* The response from the TPM was invalid */
ERR_RESPONSE_TIMEOUT = 0x1F /* Time out for TPM response */
};
#define CLASS_MISC_CONFIG 0x8
enum ENUM_MISC_CONFIG {
ERR_INTERRUPT = 1,
ERR_FORBIDDEN_BY_OWNER = 0x10,
ERR_TOOL_LAUNCH,
ERR_CANNOT_REVERSE,
ERR_ALREADY_REVOKED,
ERR_INVALID_RETURN_ADDR,
ERR_NO_TPM,
};
void txt_get_racm_error(void)
{
txt_errorcode_t err;
acmod_error_t acmod_err;
/*
* display TXT.ERRORODE error
*/
err = (txt_errorcode_t)read_pub_config_reg(TXTCR_ERRORCODE);
/* AC module error (don't know how to parse other errors) */
if ( err.valid == 0 ) {
printk(TBOOT_ERR
"Cannot retrieve status - ERRORSTS register is not valid.\n");
return;
}
if ( err.external == 0 ) { /* processor error */
printk(TBOOT_ERR"CPU generated error 0x%x\n", (uint32_t)err.type);
return;
}
acmod_err._raw = err.type;
if ( acmod_err.src == 1 ) {
printk(TBOOT_ERR"Unknown SW error.\n");
return;
}
if ( acmod_err.acm_type != 0x9 ) {
printk(TBOOT_ERR
"Cannot retrieve status - wrong ACM type in ERRORSTS register.\n");
return;
}
if ( acmod_err.progress == CLASS_ACM_ENTRY &&
acmod_err.error == ERR_TPM_DOUBLE_AUX ) {
printk(TBOOT_ERR
"Nothing to do: double AUX index is not valid TXT configuration.\n");
return;
}
if ( acmod_err.progress == CLASS_TPM_ACCESS &&
acmod_err.error == ERR_TPM_NV_INDEX_INVALID ) {
printk(TBOOT_ERR
"Nothing to do: invalid AUX index attributes.\n");
return;
}
if ( acmod_err.progress == CLASS_TPM_ACCESS &&
acmod_err.error == ERR_TPM_NV_PO_INDEX_INVALID ) {
printk(TBOOT_ERR
"Error: invalid PO index attributes.\n");
return;
}
if ( acmod_err.progress == CLASS_MISC_CONFIG &&
acmod_err.error == ERR_ALREADY_REVOKED ) {
printk(TBOOT_ERR
"Nothing to do: already revoked.\n");
return;
}
if ( acmod_err.progress == CLASS_MISC_CONFIG &&
acmod_err.error == ERR_FORBIDDEN_BY_OWNER ) {
printk(TBOOT_ERR
"Error: revocation forbidden by owner.\n");
return;
}
if ( acmod_err.progress == CLASS_MISC_CONFIG &&
acmod_err.error == ERR_CANNOT_REVERSE ) {
printk(TBOOT_ERR
"Error: cannot decrement revocation version.\n");
return;
}
if ( acmod_err.progress == CLASS_MISC_CONFIG &&
acmod_err.error == ERR_INVALID_RETURN_ADDR ) {
printk(TBOOT_ERR
"Error: invalid input address of return point.\n");
return;
}
if ( acmod_err.progress == CLASS_MISC_CONFIG &&
acmod_err.error == ERR_NO_TPM ) {
printk(TBOOT_ERR
"Nothing to do: No TPM present.\n");
return;
}
if ( acmod_err.progress == 0 && acmod_err.error == 0 ) {
printk(TBOOT_INFO
"Success: Revocation completed.\n");
return;
}
printk(TBOOT_ERR"RACM generated error 0x%Lx.\n", err._raw);
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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