b890a1228d
As per discussion with lawyers[tm], it's not a good idea to
shorten the license header too much - not for legal reasons
but because there are tools that look for them, and giving
them a standard pattern simplifies things.
However, we got confirmation that we don't have to update
every file ever added to coreboot whenever the FSF gets a
new lease, but can drop the address instead.
util/kconfig is excluded because that's imported code that
we may want to synchronize every now and then.
$ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} +
$ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} +
$ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} +
$ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} +
$ find * -type f
-a \! -name \*.patch \
-a \! -name \*_shipped \
-a \! -name LICENSE_GPL \
-a \! -name LGPL.txt \
-a \! -name COPYING \
-a \! -name DISCLAIMER \
-exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} +
Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/9233
Tested-by: build bot (Jenkins)
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright 2014 Google Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc.
|
|
*/
|
|
|
|
#include <arch/cache.h>
|
|
#include <arch/spintable.h>
|
|
#include <arch/transition.h>
|
|
#include <console/console.h>
|
|
#include <cpu/cpu.h>
|
|
#include <cbmem.h>
|
|
#include <string.h>
|
|
|
|
static struct spintable_attributes spin_attrs;
|
|
|
|
void spintable_init(void *monitor_address)
|
|
{
|
|
extern void __wait_for_spin_table_request(void);
|
|
const size_t code_size = 4096;
|
|
|
|
if (monitor_address == NULL) {
|
|
printk(BIOS_ERR, "spintable: NULL address to monitor.\n");
|
|
return;
|
|
}
|
|
|
|
spin_attrs.entry = cbmem_add(CBMEM_ID_SPINTABLE, code_size);
|
|
|
|
if (spin_attrs.entry == NULL)
|
|
return;
|
|
|
|
spin_attrs.addr = monitor_address;
|
|
|
|
printk(BIOS_INFO, "spintable @ %p will monitor %p\n",
|
|
spin_attrs.entry, spin_attrs.addr);
|
|
|
|
/* Ensure the memory location is zero'd out. */
|
|
*(uint64_t *)monitor_address = 0;
|
|
|
|
memcpy(spin_attrs.entry, __wait_for_spin_table_request, code_size);
|
|
|
|
dcache_clean_invalidate_by_mva(monitor_address, sizeof(uint64_t));
|
|
dcache_clean_invalidate_by_mva(spin_attrs.entry, code_size);
|
|
}
|
|
|
|
static void spintable_enter(void *unused)
|
|
{
|
|
struct exc_state state;
|
|
const struct spintable_attributes *attrs;
|
|
int current_el;
|
|
|
|
attrs = spintable_get_attributes();
|
|
|
|
current_el = get_current_el();
|
|
|
|
if (current_el != EL3)
|
|
attrs->entry(attrs->addr);
|
|
|
|
memset(&state, 0, sizeof(state));
|
|
state.elx.spsr = get_eret_el(EL2, SPSR_USE_L);
|
|
|
|
transition_with_entry(attrs->entry, attrs->addr, &state);
|
|
}
|
|
|
|
const struct spintable_attributes *spintable_get_attributes(void)
|
|
{
|
|
if (spin_attrs.entry == NULL) {
|
|
printk(BIOS_ERR, "spintable: monitor code not present.\n");
|
|
return NULL;
|
|
}
|
|
|
|
return &spin_attrs;
|
|
}
|
|
|
|
void spintable_start(void)
|
|
{
|
|
struct cpu_action action = {
|
|
.run = spintable_enter,
|
|
};
|
|
|
|
if (spintable_get_attributes() == NULL)
|
|
return;
|
|
|
|
printk(BIOS_INFO, "All non-boot CPUs to enter spintable.\n");
|
|
|
|
arch_run_on_all_cpus_but_self_async(&action);
|
|
}
|