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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2020 IBM Corp. */
#define TPM_SKIBOOT
#include "secvar_common_test.c"
#include "../storage/secboot_tpm.c"
#include "../storage/fakenv_ops.c"
#include "../secvar_util.c"
char *secboot_buffer;
#define ARBITRARY_SECBOOT_SIZE 128000
const char *secvar_test_name = "secboot_tpm";
int flash_secboot_read(void *dst, uint32_t src, uint32_t len)
{
memcpy(dst, secboot_buffer + src, len);
return 0;
}
int flash_secboot_write(uint32_t dst, void *src, uint32_t len)
{
memcpy(secboot_buffer + dst, src, len);
return 0;
}
int flash_secboot_info(uint32_t *total_size)
{
*total_size = ARBITRARY_SECBOOT_SIZE;
return 0;
}
/* Toggle this to test the physical presence resetting */
bool phys_presence = false;
bool secvar_check_physical_presence(void)
{
return phys_presence;
}
struct platform platform;
int run_test(void)
{
int rc;
struct secvar *tmp;
secboot_buffer = zalloc(ARBITRARY_SECBOOT_SIZE);
// Initialize and format the storage
rc = secboot_tpm_store_init();
ASSERT(OPAL_SUCCESS == rc);
// Load the just-formatted empty section
rc = secboot_tpm_load_bank(&variable_bank, SECVAR_VARIABLE_BANK);
ASSERT(OPAL_SUCCESS == rc);
ASSERT(0 == list_length(&variable_bank));
// Add some test variables
tmp = new_secvar("test", 5, "testdata", 8, 0);
list_add_tail(&variable_bank, &tmp->link);
tmp = new_secvar("foo", 3, "moredata", 8, 0);
list_add_tail(&variable_bank, &tmp->link);
// Add a priority variable, ensure that works
tmp = new_secvar("priority", 9, "meep", 4, SECVAR_FLAG_PROTECTED);
list_add_tail(&variable_bank, &tmp->link);
// Add another one
tmp = new_secvar("priority2", 9, "meep", 4, SECVAR_FLAG_PROTECTED);
list_add_tail(&variable_bank, &tmp->link);
ASSERT(4 == list_length(&variable_bank));
// Write the bank
rc = secboot_tpm_write_bank(&variable_bank, SECVAR_VARIABLE_BANK);
ASSERT(OPAL_SUCCESS == rc);
// should write to bank 1 first
ASSERT(*((uint64_t*) secboot_image->bank[1]) != 0llu);
ASSERT(*((uint64_t*) secboot_image->bank[0]) == 0llu);
// Clear the variable list
clear_bank_list(&variable_bank);
ASSERT(0 == list_length(&variable_bank));
// Load the bank
rc = secboot_tpm_load_bank(&variable_bank, SECVAR_VARIABLE_BANK);
ASSERT(OPAL_SUCCESS == rc);
ASSERT(4 == list_length(&variable_bank));
// Change a variable
tmp = list_tail(&variable_bank, struct secvar, link);
memcpy(tmp->data, "somethin", 8);
// Write the bank
rc = secboot_tpm_write_bank(&variable_bank, SECVAR_VARIABLE_BANK);
ASSERT(OPAL_SUCCESS == rc);
// should have data in both now
ASSERT(*((uint64_t*) secboot_image->bank[0]) != 0llu);
ASSERT(*((uint64_t*) secboot_image->bank[1]) != 0llu);
clear_bank_list(&variable_bank);
// Tamper with pnor, hash check should catch this
secboot_image->bank[0][0] = ~secboot_image->bank[0][0];
rc = secboot_tpm_load_bank(&variable_bank, SECVAR_VARIABLE_BANK);
ASSERT(rc != OPAL_SUCCESS); // TODO: permission?
// Fix it back...
secboot_image->bank[0][0] = ~secboot_image->bank[0][0];
// Should be ok again
rc = secboot_tpm_load_bank(&variable_bank, SECVAR_VARIABLE_BANK);
ASSERT(rc == OPAL_SUCCESS);
clear_bank_list(&variable_bank);
free(secboot_buffer);
return 0;
}
int main(void)
{
int rc = 0;
list_head_init(&variable_bank);
rc = run_test();
if (rc)
printf(COLOR_RED "FAILED" COLOR_RESET "\n");
else
printf(COLOR_GREEN "OK" COLOR_RESET "\n");
free(tpmnv_vars_image);
free(tpmnv_control_image);
free(secboot_image);
return rc;
}
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