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-rw-r--r--roms/u-boot/arch/x86/lib/init_helpers.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/roms/u-boot/arch/x86/lib/init_helpers.c b/roms/u-boot/arch/x86/lib/init_helpers.c
new file mode 100644
index 000000000..67401b9ba
--- /dev/null
+++ b/roms/u-boot/arch/x86/lib/init_helpers.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/global_data.h>
+#include <linux/errno.h>
+#include <asm/mtrr.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int init_cache_f_r(void)
+{
+ bool do_mtrr = CONFIG_IS_ENABLED(X86_32BIT_INIT) ||
+ IS_ENABLED(CONFIG_FSP_VERSION2);
+ int ret;
+
+ if (!ll_boot_init())
+ return 0;
+
+ do_mtrr &= !IS_ENABLED(CONFIG_FSP_VERSION1) &&
+ !IS_ENABLED(CONFIG_SYS_SLIMBOOTLOADER);
+
+ if (do_mtrr) {
+ ret = mtrr_commit(false);
+ /*
+ * If MTRR MSR is not implemented by the processor, just ignore
+ * it
+ */
+ if (ret && ret != -ENOSYS)
+ return ret;
+ }
+
+ /* Initialise the CPU cache(s) */
+ return init_cache();
+}