arm: mach-omap2: am33xx: Add FDT fixup suport for AM33xx/AM43xx boards

Similar to what is done with OMAP5 class boards we need to
perform fixups common to this SoC class, add support for this here
and add HS fixups.

Signed-off-by: Andrew F. Davis <afd@ti.com>

arch/arm/mach-omap2/am33xx/Makefile

@@ -23,6 +23,7 @@ obj-y	+= board.o
 obj-y	+= mux.o
 obj-y	+= prcm-regs.o
 obj-y	+= hw_data.o
+obj-y	+= fdt.o
 
 obj-$(CONFIG_CLOCK_SYNTHESIZER)	+= clk_synthesizer.o
 

arch/arm/mach-omap2/am33xx/fdt.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2017 Texas Instruments, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <malloc.h>
+
+#include <asm/omap_common.h>
+#include <asm/arch-am33xx/sys_proto.h>
+
+#ifdef CONFIG_TI_SECURE_DEVICE
+
+static void ft_hs_fixups(void *fdt, bd_t *bd)
+{
+	/* Check we are running on an HS/EMU device type */
+	if (GP_DEVICE != get_device_type()) {
+		if ((ft_hs_disable_rng(fdt, bd) == 0) &&
+		    (ft_hs_fixup_dram(fdt, bd) == 0) &&
+		    (ft_hs_add_tee(fdt, bd) == 0))
+			return;
+	} else {
+		printf("ERROR: Incorrect device type (GP) detected!");
+	}
+	/* Fixup failed or wrong device type */
+	hang();
+}
+#else
+static void ft_hs_fixups(void *fdt, bd_t *bd) { }
+#endif /* #ifdef CONFIG_TI_SECURE_DEVICE */
+
+/*
+ * Place for general cpu/SoC FDT fixups. Board specific
+ * fixups should remain in the board files which is where
+ * this function should be called from.
+ */
+void ft_cpu_setup(void *fdt, bd_t *bd)
+{
+	ft_hs_fixups(fdt, bd);
+}