From 5e910074245fa180cfbe70d3c8bceeff1eaa026e Mon Sep 17 00:00:00 2001 From: Andrew Thoelke Date: Mon, 2 Jun 2014 11:40:35 +0100 Subject: Per-cpu data cache restructuring This patch prepares the per-cpu pointer cache for wider use by: * renaming the structure to cpu_data and placing in new header * providing accessors for this CPU, or other CPUs * splitting the initialization of the TPIDR pointer from the initialization of the cpu_data content * moving the crash stack initialization to a crash stack function * setting the TPIDR pointer very early during boot Change-Id: Icef9004ff88f8eb241d48c14be3158087d7e49a3 --- bl31/cpu_data_array.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 bl31/cpu_data_array.c (limited to 'bl31/cpu_data_array.c') diff --git a/bl31/cpu_data_array.c b/bl31/cpu_data_array.c new file mode 100644 index 00000000..b0042a16 --- /dev/null +++ b/bl31/cpu_data_array.c @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2014, 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 +#include +#include + +/* verify assembler offsets match data structures */ +CASSERT(CPU_DATA_CRASH_STACK_OFFSET == __builtin_offsetof + (cpu_data_t, crash_stack), + assert_cpu_data_crash_stack_offset_mismatch); + +CASSERT((1 << CPU_DATA_LOG2SIZE) == sizeof(cpu_data_t), + assert_cpu_data_log2size_mismatch); + +/* The per_cpu_ptr_cache_t space allocation */ +cpu_data_t percpu_data[PLATFORM_CORE_COUNT]; -- cgit