arch/arm/mach-at91/sama5.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Setup code for SAMA5
   4  *
   5  *  Copyright (C) 2013 Atmel,
   6  *                2013 Ludovic Desroches <ludovic.desroches@atmel.com>
   7  */
   8
   9 #include <linux/of.h>
  10 #include <linux/of_platform.h>
  11
  12 #include <asm/hardware/cache-l2x0.h>
  13 #include <asm/mach/arch.h>
  14 #include <asm/mach/map.h>
  15 #include <asm/outercache.h>
  16 #include <asm/system_misc.h>
  17
  18 #include "generic.h"
  19 #include "sam_secure.h"
  20
  21 static void sama5_l2c310_write_sec(unsigned long val, unsigned reg)
  22 {
  23         /* OP-TEE configures the L2 cache and does not allow modifying it yet */
  24 }
  25
  26 static void __init sama5_secure_cache_init(void)
  27 {
  28         sam_secure_init();
  29         if (IS_ENABLED(CONFIG_OUTER_CACHE) && sam_linux_is_optee_available())
  30                 outer_cache.write_sec = sama5_l2c310_write_sec;
  31 }
  32
  33 static void __init sama5_dt_device_init(void)
  34 {
  35         of_platform_default_populate(NULL, NULL, NULL);
  36         sama5_pm_init();
  37 }
  38
  39 static const char *const sama5_dt_board_compat[] __initconst = {
  40         "atmel,sama5",
  41         NULL
  42 };
  43
  44 DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
  45         /* Maintainer: Atmel */
  46         .init_machine   = sama5_dt_device_init,
  47         .dt_compat      = sama5_dt_board_compat,
  48 MACHINE_END
  49
  50 static const char *const sama5_alt_dt_board_compat[] __initconst = {
  51         "atmel,sama5d4",
  52         NULL
  53 };
  54
  55 DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
  56         /* Maintainer: Atmel */
  57         .init_machine   = sama5_dt_device_init,
  58         .dt_compat      = sama5_alt_dt_board_compat,
  59         .l2c_aux_mask   = ~0UL,
  60 MACHINE_END
  61
  62 static void __init sama5d2_init(void)
  63 {
  64         of_platform_default_populate(NULL, NULL, NULL);
  65         sama5d2_pm_init();
  66 }
  67
  68 static const char *const sama5d2_compat[] __initconst = {
  69         "atmel,sama5d2",
  70         NULL
  71 };
  72
  73 DT_MACHINE_START(sama5d2, "Atmel SAMA5")
  74         /* Maintainer: Atmel */
  75         .init_machine   = sama5d2_init,
  76         .init_early     = sama5_secure_cache_init,
  77         .dt_compat      = sama5d2_compat,
  78         .l2c_aux_mask   = ~0UL,
  79 MACHINE_END