1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2011 4 * Graeme Russ, <graeme.russ@gmail.com> 5 */ 6 7 #include <common.h> 8 #include <linux/errno.h> 9 #include <asm/mtrr.h> 10 11 DECLARE_GLOBAL_DATA_PTR; 12 13 /* Get the top of usable RAM */ 14 __weak ulong board_get_usable_ram_top(ulong total_size) 15 { 16 return gd->ram_size; 17 } 18 19 int init_cache_f_r(void) 20 { 21 #if CONFIG_IS_ENABLED(X86_32BIT_INIT) && !defined(CONFIG_HAVE_FSP) 22 int ret; 23 24 ret = mtrr_commit(false); 25 /* If MTRR MSR is not implemented by the processor, just ignore it */ 26 if (ret && ret != -ENOSYS) 27 return ret; 28 #endif 29 /* Initialise the CPU cache(s) */ 30 return init_cache(); 31 } 32