diff options
Diffstat (limited to 'lib/pmf/pmf_smc.c')
-rw-r--r-- | lib/pmf/pmf_smc.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/pmf/pmf_smc.c b/lib/pmf/pmf_smc.c new file mode 100644 index 0000000000..14190b774d --- /dev/null +++ b/lib/pmf/pmf_smc.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2016, ARM Limited and Contributors. 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 ARM 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 HOLDER 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 <assert.h> +#include <debug.h> +#include <platform.h> +#include <pmf.h> +#include <smcc_helpers.h> + +/* + * This function is responsible for handling all PMF SMC calls. + */ +uintptr_t pmf_smc_handler(unsigned int smc_fid, + u_register_t x1, + u_register_t x2, + u_register_t x3, + u_register_t x4, + void *cookie, + void *handle, + u_register_t flags) +{ + int rc; + unsigned long long ts_value; + + if (((smc_fid >> FUNCID_CC_SHIFT) & FUNCID_CC_MASK) == SMC_32) { + + x1 = (uint32_t)x1; + x2 = (uint32_t)x2; + x3 = (uint32_t)x3; + + switch (smc_fid) { + case PMF_SMC_GET_TIMESTAMP_32: + /* + * Return error code and the captured + * time-stamp to the caller. + * x0 --> error code. + * x1 - x2 --> time-stamp value. + */ + rc = pmf_get_timestamp_smc(x1, x2, x3, &ts_value); + SMC_RET3(handle, rc, (uint32_t)ts_value, + (uint32_t)(ts_value >> 32)); + + default: + break; + } + } else { + switch (smc_fid) { + case PMF_SMC_GET_TIMESTAMP_64: + /* + * Return error code and the captured + * time-stamp to the caller. + * x0 --> error code. + * x1 --> time-stamp value. + */ + rc = pmf_get_timestamp_smc(x1, x2, x3, &ts_value); + SMC_RET2(handle, rc, ts_value); + + default: + break; + } + } + + WARN("Unimplemented PMF Call: 0x%x \n", smc_fid); + SMC_RET1(handle, SMC_UNK); +} |