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3b5a7ca7d2
When running under OP-TEE, the L2 cache is configured by OP-TEE and the sam platform code does not allow any modification yet. Setup a dummy .write_sec() callback to avoid triggering exceptions when Linux tries to modify the L2 cache configuration. Signed-off-by: Clément Léger <clement.leger@bootlin.com> [claudiu.beznea: keep .init_early populated only for SAMA5D2, remove sam_secure_init() from sama5d2_init() as it is also called in sama5_secure_cache_init()] Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lore.kernel.org/r/20220606145701.185552-3-clement.leger@bootlin.com
80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Setup code for SAMA5
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*
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* Copyright (C) 2013 Atmel,
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* 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
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*/
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <asm/hardware/cache-l2x0.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/outercache.h>
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#include <asm/system_misc.h>
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#include "generic.h"
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#include "sam_secure.h"
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static void sama5_l2c310_write_sec(unsigned long val, unsigned reg)
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{
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/* OP-TEE configures the L2 cache and does not allow modifying it yet */
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}
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static void __init sama5_secure_cache_init(void)
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{
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sam_secure_init();
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if (sam_linux_is_optee_available())
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outer_cache.write_sec = sama5_l2c310_write_sec;
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}
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static void __init sama5_dt_device_init(void)
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{
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of_platform_default_populate(NULL, NULL, NULL);
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sama5_pm_init();
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}
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static const char *const sama5_dt_board_compat[] __initconst = {
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"atmel,sama5",
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NULL
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};
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DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
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/* Maintainer: Atmel */
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.init_machine = sama5_dt_device_init,
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.dt_compat = sama5_dt_board_compat,
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MACHINE_END
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static const char *const sama5_alt_dt_board_compat[] __initconst = {
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"atmel,sama5d4",
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NULL
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};
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DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
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/* Maintainer: Atmel */
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.init_machine = sama5_dt_device_init,
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.dt_compat = sama5_alt_dt_board_compat,
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.l2c_aux_mask = ~0UL,
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MACHINE_END
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static void __init sama5d2_init(void)
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{
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of_platform_default_populate(NULL, NULL, NULL);
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sama5d2_pm_init();
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}
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static const char *const sama5d2_compat[] __initconst = {
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"atmel,sama5d2",
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NULL
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};
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DT_MACHINE_START(sama5d2, "Atmel SAMA5")
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/* Maintainer: Atmel */
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.init_machine = sama5d2_init,
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.init_early = sama5_secure_cache_init,
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.dt_compat = sama5d2_compat,
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.l2c_aux_mask = ~0UL,
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MACHINE_END
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