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#include "libcflat.h"
#include "svc.h"
#include "smc.h"
#include "syscntl.h"
#include "builtins.h"
#include "exception.h"
#include "state.h"
#include "debug.h"
#include "tztest_internal.h"
#include "tztest_el1.h"
uint32_t el1_check_register_access(uint32_t __attribute__((unused))arg)
{
uintptr_t val;
/* Set things to non-secure P1 and attempt accesses */
TEST_HEAD("unrestricted register access");
/* We capture the read and use it in the write of the below to insure we do
* not destroy the register setting. This can only go wrong if read fails
* but write succeeds which is unlikely.
* Note: If the above scenario occurs, we will likely hang on the way out
* of the test.
*/
#ifdef AARCH32
TEST_MSG("SCR read");
TEST_NO_EXCEPTION(val = READ_SCR());
TEST_MSG("SCR write");
TEST_NO_EXCEPTION(WRITE_SCR(val));
TEST_MSG("SDER read");
TEST_NO_EXCEPTION(val = READ_SDER());
TEST_MSG("SDER write");
TEST_NO_EXCEPTION(WRITE_SDER(val));
TEST_MSG("MVBAR read");
TEST_NO_EXCEPTION(val = READ_MVBAR());
TEST_MSG("MVBAR write");
TEST_NO_EXCEPTION(WRITE_MVBAR(val));
/* It should be safe to write a zero to NSACR as we have not disabled any
* non-secure access at this point.
*/
TEST_MSG("NSACR write");
TEST_NO_EXCEPTION(WRITE_NSACR(0));
#else
TEST_MSG("SCR read");
TEST_EL1_EXCEPTION(val = READ_SCR(), EC_UNKNOWN);
TEST_MSG("SCR write");
TEST_EL1_EXCEPTION(WRITE_SCR(val), EC_UNKNOWN);
TEST_MSG("SDER read");
TEST_EL1_EXCEPTION(val = READ_SDER(), EC_UNKNOWN);
TEST_MSG("SDER write");
TEST_EL1_EXCEPTION(WRITE_SDER(val), EC_UNKNOWN);
TEST_MSG("CPTR_EL3 read");
TEST_EL1_EXCEPTION(val = READ_CPTR_EL3(), EC_UNKNOWN);
TEST_MSG("CPTR_EL3 write");
TEST_EL1_EXCEPTION(WRITE_CPTR_EL3(val), EC_UNKNOWN);
#endif
return 0;
}
tztest_t test_func[] = {
[TZTEST_SMC] = el1_check_smc,
[TZTEST_REG_ACCESS] = el1_check_register_access,
#ifdef AARCH64
[TZTEST_CPACR_TRAP] = el1_check_cpacr_trap,
[TZTEST_WFX_TRAP] = el1_check_wfx_trap
#endif
};
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