3a0013dcde
To allow setting the entry point for the secondary CPUs provide a pointer, c_entry, which contains the location to branch to after setting up the stack. BUG=chrome-os-partner:31545 BRANCH=None TEST=Built and booted to the kernel on ryu. Change-Id: I03e54b081aa5ff70b90fbd7f1b243fdb4f42c5a6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: f692c5814ea5c7ff4895576e1db8361ff3b7d9fb Original-Change-Id: Ic2f6c79cde708b24c379345aed1e2cc0760ccad8 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/214771 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9015 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <arch/stages.h>
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#include <arch/cpu.h>
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/*
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* This variable holds entry point for CPUs starting up. Before the other
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* CPUs are brought up this value will change to provide the secondary
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* code path.
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*/
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void (*c_entry)(void) = &arm64_init;
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void __attribute__((weak)) arm64_soc_init(void)
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{
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/* Default weak implementation does nothing. */
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}
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static void seed_stack(void)
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{
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char *stack_begin;
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uint64_t *slot;
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int i;
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int size;
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stack_begin = cpu_get_stack(smp_processor_id());
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stack_begin -= CONFIG_STACK_SIZE;
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slot = (void *)stack_begin;
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/* Pad out 256 bytes for current usage. */
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size = CONFIG_STACK_SIZE - 256;
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size /= sizeof(*slot);
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for (i = 0; i < size; i++)
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*slot++ = 0xdeadbeefdeadbeefULL;
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}
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void arm64_init(void)
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{
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seed_stack();
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arm64_soc_init();
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main();
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}
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