X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farmv8%2Fcpu.c;h=28a27f724e60c2549c629aad0aa45083051e3217;hb=8dda2e2f9e0976249f4a390e72f12533dbcb5ef4;hp=e06c3cc04de47cae7374ca725d33120933cfbbd4;hpb=7f673c99c2d8d1aa21996c5b914f06d784b080ca;p=u-boot

diff --git a/arch/arm/cpu/armv8/cpu.c b/arch/arm/cpu/armv8/cpu.c
index e06c3cc04d..28a27f724e 100644
--- a/arch/arm/cpu/armv8/cpu.c
+++ b/arch/arm/cpu/armv8/cpu.c
@@ -14,8 +14,23 @@
 #include <common.h>
 #include <command.h>
 #include <asm/system.h>
+#include <asm/secure.h>
 #include <linux/compiler.h>
 
+/*
+ * sdelay() - simple spin loop.
+ *
+ * Will delay execution by roughly (@loops * 2) cycles.
+ * This is necessary to be used before timers are accessible.
+ *
+ * A value of "0" will results in 2^64 loops.
+ */
+void sdelay(unsigned long loops)
+{
+	__asm__ volatile ("1:\n" "subs %0, %0, #1\n"
+			  "b.ne 1b" : "=r" (loops) : "0"(loops) : "cc");
+}
+
 int cleanup_before_linux(void)
 {
 	/*
@@ -41,3 +56,24 @@ int cleanup_before_linux(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_ARMV8_PSCI
+static void relocate_secure_section(void)
+{
+#ifdef CONFIG_ARMV8_SECURE_BASE
+	size_t sz = __secure_end - __secure_start;
+
+	memcpy((void *)CONFIG_ARMV8_SECURE_BASE, __secure_start, sz);
+	flush_dcache_range(CONFIG_ARMV8_SECURE_BASE,
+			   CONFIG_ARMV8_SECURE_BASE + sz + 1);
+	invalidate_icache_all();
+#endif
+}
+
+void armv8_setup_psci(void)
+{
+	relocate_secure_section();
+	secure_ram_addr(psci_setup_vectors)();
+	secure_ram_addr(psci_arch_init)();
+}
+#endif