linux-stable/arch/arm/mach-at91/sama5.c
Peter Rosin 6a3fc8c330 ARM: at91: fix build for SAMA5D3 w/o L2 cache
The L2 cache is present on the newer SAMA5D2 and SAMA5D4 families, but
apparently not for the older SAMA5D3.

Solves a build-time regression with the following symptom:

sama5.c:(.init.text+0x48): undefined reference to `outer_cache'

Fixes: 3b5a7ca7d2 ("ARM: at91: setup outer cache .write_sec() callback if needed")
Signed-off-by: Peter Rosin <peda@axentia.se>
[claudiu.beznea: delete "At least not always." from commit description]
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/b7f8dacc-5e1f-0eb2-188e-3ad9a9f7613d@axentia.se
2022-11-24 12:50:07 +02:00

79 lines
1.8 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Setup code for SAMA5
*
* Copyright (C) 2013 Atmel,
* 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
*/
#include <linux/of.h>
#include <linux/of_platform.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/outercache.h>
#include <asm/system_misc.h>
#include "generic.h"
#include "sam_secure.h"
static void sama5_l2c310_write_sec(unsigned long val, unsigned reg)
{
/* OP-TEE configures the L2 cache and does not allow modifying it yet */
}
static void __init sama5_secure_cache_init(void)
{
sam_secure_init();
if (IS_ENABLED(CONFIG_OUTER_CACHE) && sam_linux_is_optee_available())
outer_cache.write_sec = sama5_l2c310_write_sec;
}
static void __init sama5_dt_device_init(void)
{
of_platform_default_populate(NULL, NULL, NULL);
sama5_pm_init();
}
static const char *const sama5_dt_board_compat[] __initconst = {
"atmel,sama5",
NULL
};
DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
/* Maintainer: Atmel */
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_dt_board_compat,
MACHINE_END
static const char *const sama5_alt_dt_board_compat[] __initconst = {
"atmel,sama5d4",
NULL
};
DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
/* Maintainer: Atmel */
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_alt_dt_board_compat,
.l2c_aux_mask = ~0UL,
MACHINE_END
static void __init sama5d2_init(void)
{
of_platform_default_populate(NULL, NULL, NULL);
sama5d2_pm_init();
}
static const char *const sama5d2_compat[] __initconst = {
"atmel,sama5d2",
NULL
};
DT_MACHINE_START(sama5d2, "Atmel SAMA5")
/* Maintainer: Atmel */
.init_machine = sama5d2_init,
.init_early = sama5_secure_cache_init,
.dt_compat = sama5d2_compat,
.l2c_aux_mask = ~0UL,
MACHINE_END