Merge pull request #62 from athoelke/set-little-endian-v2

Set processor endianness immediately after RESET v2

bl1/aarch64/bl1_arch_setup.c

@@ -39,10 +39,9 @@ void bl1_arch_setup(void)
 {
 	unsigned long tmp_reg = 0;
 
-	/* Enable alignment checks and set the exception endianess to LE */
+	/* Enable alignment checks */
 	tmp_reg = read_sctlr_el3();
 	tmp_reg |= (SCTLR_A_BIT | SCTLR_SA_BIT);
-	tmp_reg &= ~SCTLR_EE_BIT;
 	write_sctlr_el3(tmp_reg);
 	isb();
 

bl1/aarch64/bl1_entrypoint.S

@@ -42,6 +42,16 @@
 	 */
 
 func bl1_entrypoint
+	/* ---------------------------------------------
+	 * Set the CPU endianness before doing anything
+	 * that might involve memory reads or writes
+	 * ---------------------------------------------
+	 */
+	mrs	x0, sctlr_el3
+	bic	x0, x0, #SCTLR_EE_BIT
+	msr	sctlr_el3, x0
+	isb
+
 	/* ---------------------------------------------
 	 * Perform any processor specific actions upon
 	 * reset e.g. cache, tlb invalidations etc.

bl31/aarch64/bl31_arch_setup.c

@@ -45,10 +45,9 @@ void bl31_arch_setup(void)
 	unsigned long tmp_reg = 0;
 	uint64_t counter_freq;
 
-	/* Enable alignment checks and set the exception endianness to LE */
+	/* Enable alignment checks */
 	tmp_reg = read_sctlr_el3();
 	tmp_reg |= (SCTLR_A_BIT | SCTLR_SA_BIT);
-	tmp_reg &= ~SCTLR_EE_BIT;
 	write_sctlr_el3(tmp_reg);
 
 	/*