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 <init.h> 9 #include <linux/errno.h> 10 #include <asm/mtrr.h> 11 12 DECLARE_GLOBAL_DATA_PTR; 13 init_cache_f_r(void)14int init_cache_f_r(void) 15 { 16 bool do_mtrr = CONFIG_IS_ENABLED(X86_32BIT_INIT) || 17 IS_ENABLED(CONFIG_FSP_VERSION2); 18 int ret; 19 20 do_mtrr &= !IS_ENABLED(CONFIG_FSP_VERSION1) && 21 !IS_ENABLED(CONFIG_SYS_SLIMBOOTLOADER); 22 23 if (do_mtrr) { 24 ret = mtrr_commit(false); 25 /* 26 * If MTRR MSR is not implemented by the processor, just ignore 27 * it 28 */ 29 if (ret && ret != -ENOSYS) 30 return ret; 31 } 32 33 /* Initialise the CPU cache(s) */ 34 return init_cache(); 35 } 36