f50a7f3d92
Based on 1 normalized pattern(s): licensed under gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 99 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.163048684@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
673 B
C
41 lines
673 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2014, Michael Ellerman, IBM Corp.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "ebb.h"
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/*
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* Test basic access to the EBB regs, they should be user accessible with no
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* kernel interaction required.
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*/
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int reg_access(void)
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{
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uint64_t val, expected;
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SKIP_IF(!ebb_is_supported());
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expected = 0x8000000100000000ull;
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mtspr(SPRN_BESCR, expected);
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val = mfspr(SPRN_BESCR);
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FAIL_IF(val != expected);
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expected = 0x0000000001000000ull;
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mtspr(SPRN_EBBHR, expected);
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val = mfspr(SPRN_EBBHR);
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FAIL_IF(val != expected);
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return 0;
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}
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int main(void)
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{
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return test_harness(reg_access, "reg_access");
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}
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