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/*
* Copyright 2014, Michael Ellerman, IBM Corp.
* Licensed under GPLv2.
*/
#include <stdio.h>
#include <stdlib.h>
#include "ebb.h"
#include "reg.h"
/*
* Test basic access to the EBB regs, they should be user accessible with no
* kernel interaction required.
*/
int reg_access(void)
{
uint64_t val, expected;
SKIP_IF(!ebb_is_supported());
expected = 0x8000000100000000ull;
mtspr(SPRN_BESCR, expected);
val = mfspr(SPRN_BESCR);
FAIL_IF(val != expected);
expected = 0x0000000001000000ull;
mtspr(SPRN_EBBHR, expected);
val = mfspr(SPRN_EBBHR);
FAIL_IF(val != expected);
return 0;
}
int main(void)
{
return test_harness(reg_access, "reg_access");
}
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