src/soc/ti/am335x/bootblock.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <types.h>
   4
   5 #include <arch/cache.h>
   6 #include <bootblock_common.h>
   7 #include <symbols.h>
   8
   9 #define SRAM_START          ((uintptr_t)_sram / MiB)
  10 #define SRAM_END            (DIV_ROUND_UP((uintptr_t)_esram, MiB))
  11
  12 #define DRAM_START          ((uintptr_t)_dram / MiB)
  13 #define DRAM_SIZE           (CONFIG_DRAM_SIZE_MB)
  14
  15 void bootblock_soc_init(void)
  16 {
  17         mmu_init();
  18
  19         /* Map everything strongly ordered by default */
  20         mmu_config_range(0, 4096, DCACHE_OFF);
  21
  22         mmu_config_range(SRAM_START, SRAM_END - SRAM_START,
  23                 DCACHE_WRITEBACK);
  24
  25         mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK);
  26
  27         dcache_mmu_enable();
  28 }