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libpayload: Add support for arm64 in libpayload

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Basic support for arm64 is enabled in libpayload.
Features added:
1) mem* operations in assembly.
2) Basic exception handling and support for testing exceptions.
3) Caching support.

Tested with arm64-generic board compilation.

BUG=None
BRANCH=None
TEST=Compilation successful

Original-Change-Id: I4e86301f9c6383abc078e2b70071fb84bd6e4741
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/187067
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit a70d13f3d225535843ab352290eab2e1ec7a9b4b)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ie3affe6a2bdd4fed3058de739d4c6aa573e5b251
Reviewed-on: http://review.coreboot.org/8063
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Furquan Shaikh
2014-02-19 11:35:30 -08:00
committed by Marc Jones
parent 2445274347
commit 8c8c377584
34 changed files with 2715 additions and 3 deletions
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96
payloads/libpayload/arch/arm64/exception.c Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright 2014 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <exception.h>
#include <libpayload.h>
#include <stdint.h>
extern unsigned int test_exc;
struct exception_handler_info
{
const char *name;
exception_hook hook;
};
static struct exception_handler_info exceptions[EXC_COUNT] = {
[EXC_INV] = { "_invalid_exception" },
[EXC_SYNC] = { "_sync" },
[EXC_IRQ] = { "_irq" },
[EXC_FIQ] = { "_fiq" },
[EXC_SERROR] = {"_serror"}
};
static void print_regs(struct exception_state *state)
{
int i;
printf("ELR = 0x%016llx ",state->elr);
printf("ESR = 0x%08llx ",state->esr);
for (i = 0; i < 31; i++) {
printf("X%02d = 0x%016llx ", i, state->regs[i]);
}
}
void exception_dispatch(struct exception_state *state, int idx);
void exception_dispatch(struct exception_state *state, int idx)
{
if (idx >= EXC_COUNT) {
printf("Bad exception index %d.\n", idx);
} else {
struct exception_handler_info *info = &exceptions[idx];
if (info->hook) {
info->hook(idx, state);
return;
}
if (info->name)
printf("exception %s\n", info->name);
else
printf("exception _not_used.\n");
}
print_regs(state);
if (test_exc)
test_exc = 0;
else
halt();
}
void exception_init(void)
{
extern void* exception_table;
set_vbar(exception_table);
}
void exception_install_hook(int type, exception_hook hook)
{
die_if(type >= EXC_COUNT, "Out of bounds exception index %d.\n", type);
exceptions[type].hook = hook;
}