arch/arm/mach-realtek/rtd1195.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Realtek RTD1195
   4  *
   5  * Copyright (c) 2017-2019 Andreas Färber
   6  */
   7
   8 #include <linux/memblock.h>
   9 #include <asm/mach/arch.h>
  10
  11 static void __init rtd1195_memblock_remove(phys_addr_t base, phys_addr_t size)
  12 {
  13         int ret;
  14
  15         ret = memblock_remove(base, size);
  16         if (ret)
  17                 pr_err("Failed to remove memblock %pa (%d)\n", &base, ret);
  18 }
  19
  20 static void __init rtd1195_reserve(void)
  21 {
  22         /* Exclude boot ROM from RAM */
  23         rtd1195_memblock_remove(0x00000000, 0x0000a800);
  24
  25         /* Exclude peripheral register spaces from RAM */
  26         rtd1195_memblock_remove(0x18000000, 0x00070000);
  27         rtd1195_memblock_remove(0x18100000, 0x01000000);
  28 }
  29
  30 static const char *const rtd1195_dt_compat[] __initconst = {
  31         "realtek,rtd1195",
  32         NULL
  33 };
  34
  35 DT_MACHINE_START(rtd1195, "Realtek RTD1195")
  36         .dt_compat = rtd1195_dt_compat,
  37         .reserve = rtd1195_reserve,
  38         .l2c_aux_val = 0x0,
  39         .l2c_aux_mask = ~0x0,
  40 MACHINE_END