Switch AARCH32/AARCH64 to __aarch64__

NOTE: AARCH32/AARCH64 macros are now deprecated in favor of __aarch64__.

All common C compilers pre-define the same macros to signal which
architecture the code is being compiled for: __arm__ for AArch32 (or
earlier versions) and __aarch64__ for AArch64. There's no need for TF-A
to define its own custom macros for this. In order to unify code with
the export headers (which use __aarch64__ to avoid another dependency),
let's deprecate the AARCH32 and AARCH64 macros and switch the code base
over to the pre-defined standard macro. (Since it is somewhat
unintuitive that __arm__ only means AArch32, let's standardize on only
using __aarch64__.)

Change-Id: Ic77de4b052297d77f38fc95f95f65a8ee70cf200
Signed-off-by: Julius Werner <jwerner@chromium.org>
diff --git a/lib/psci/psci_common.c b/lib/psci/psci_common.c
index 3f5e989..5d24356 100644
--- a/lib/psci/psci_common.c
+++ b/lib/psci/psci_common.c
@@ -619,53 +619,7 @@
  * This function determines the full entrypoint information for the requested
  * PSCI entrypoint on power on/resume and returns it.
  ******************************************************************************/
-#ifdef AARCH32
-static int psci_get_ns_ep_info(entry_point_info_t *ep,
-			       uintptr_t entrypoint,
-			       u_register_t context_id)
-{
-	u_register_t ep_attr;
-	unsigned int aif, ee, mode;
-	u_register_t scr = read_scr();
-	u_register_t ns_sctlr, sctlr;
-
-	/* Switch to non secure state */
-	write_scr(scr | SCR_NS_BIT);
-	isb();
-	ns_sctlr = read_sctlr();
-
-	sctlr = scr & SCR_HCE_BIT ? read_hsctlr() : ns_sctlr;
-
-	/* Return to original state */
-	write_scr(scr);
-	isb();
-	ee = 0;
-
-	ep_attr = NON_SECURE | EP_ST_DISABLE;
-	if (sctlr & SCTLR_EE_BIT) {
-		ep_attr |= EP_EE_BIG;
-		ee = 1;
-	}
-	SET_PARAM_HEAD(ep, PARAM_EP, VERSION_1, ep_attr);
-
-	ep->pc = entrypoint;
-	zeromem(&ep->args, sizeof(ep->args));
-	ep->args.arg0 = context_id;
-
-	mode = scr & SCR_HCE_BIT ? MODE32_hyp : MODE32_svc;
-
-	/*
-	 * TODO: Choose async. exception bits if HYP mode is not
-	 * implemented according to the values of SCR.{AW, FW} bits
-	 */
-	aif = SPSR_ABT_BIT | SPSR_IRQ_BIT | SPSR_FIQ_BIT;
-
-	ep->spsr = SPSR_MODE32(mode, entrypoint & 0x1, ee, aif);
-
-	return PSCI_E_SUCCESS;
-}
-
-#else
+#ifdef __aarch64__
 static int psci_get_ns_ep_info(entry_point_info_t *ep,
 			       uintptr_t entrypoint,
 			       u_register_t context_id)
@@ -722,7 +676,53 @@
 
 	return PSCI_E_SUCCESS;
 }
-#endif
+#else /* !__aarch64__ */
+static int psci_get_ns_ep_info(entry_point_info_t *ep,
+			       uintptr_t entrypoint,
+			       u_register_t context_id)
+{
+	u_register_t ep_attr;
+	unsigned int aif, ee, mode;
+	u_register_t scr = read_scr();
+	u_register_t ns_sctlr, sctlr;
+
+	/* Switch to non secure state */
+	write_scr(scr | SCR_NS_BIT);
+	isb();
+	ns_sctlr = read_sctlr();
+
+	sctlr = scr & SCR_HCE_BIT ? read_hsctlr() : ns_sctlr;
+
+	/* Return to original state */
+	write_scr(scr);
+	isb();
+	ee = 0;
+
+	ep_attr = NON_SECURE | EP_ST_DISABLE;
+	if (sctlr & SCTLR_EE_BIT) {
+		ep_attr |= EP_EE_BIG;
+		ee = 1;
+	}
+	SET_PARAM_HEAD(ep, PARAM_EP, VERSION_1, ep_attr);
+
+	ep->pc = entrypoint;
+	zeromem(&ep->args, sizeof(ep->args));
+	ep->args.arg0 = context_id;
+
+	mode = scr & SCR_HCE_BIT ? MODE32_hyp : MODE32_svc;
+
+	/*
+	 * TODO: Choose async. exception bits if HYP mode is not
+	 * implemented according to the values of SCR.{AW, FW} bits
+	 */
+	aif = SPSR_ABT_BIT | SPSR_IRQ_BIT | SPSR_FIQ_BIT;
+
+	ep->spsr = SPSR_MODE32(mode, entrypoint & 0x1, ee, aif);
+
+	return PSCI_E_SUCCESS;
+}
+
+#endif /* __aarch64__ */
 
 /*******************************************************************************
  * This function validates the entrypoint with the platform layer if the