plat: imx8mm: Add in BL2 with FIP

Adds bl2 with FIP to the build required for mbed Linux booting where
we do:

BootROM -> SPL -> BL2 -> OPTEE -> u-boot

If NEED_BL2 is specified then BL2 will be built and BL31 will have
its address range modified upwards to accommodate. BL31 must be
loaded from a FIP in this case.

If NEED_BL2 is not specified then the current BL31 boot flow is
unaffected and u-boot SPL will load and execute BL31 directly.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
Change-Id: I655343b3b689b1fc57cfbedda4d3dc2fbd549a96
diff --git a/plat/imx/imx8m/imx8mm/imx8mm_bl2_mem_params_desc.c b/plat/imx/imx8m/imx8mm/imx8mm_bl2_mem_params_desc.c
new file mode 100644
index 0000000..e44345d
--- /dev/null
+++ b/plat/imx/imx8m/imx8mm/imx8mm_bl2_mem_params_desc.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <common/desc_image_load.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+
+static bl_mem_params_node_t bl2_mem_params_descs[] = {
+	{
+		.image_id = BL31_IMAGE_ID,
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP, VERSION_2,
+				      entry_point_info_t,
+				      SECURE | EXECUTABLE | EP_FIRST_EXE),
+		.ep_info.pc = BL31_BASE,
+		.ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
+					DISABLE_ALL_EXCEPTIONS),
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP, VERSION_2, image_info_t,
+				      IMAGE_ATTRIB_PLAT_SETUP),
+		.image_info.image_base = BL31_BASE,
+		.image_info.image_max_size = BL31_LIMIT - BL31_BASE,
+		.next_handoff_image_id = INVALID_IMAGE_ID,
+	},
+	{
+		.image_id = BL32_IMAGE_ID,
+
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP, VERSION_2,
+				      entry_point_info_t,
+				      SECURE | EXECUTABLE),
+		.ep_info.pc = BL32_BASE,
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP, VERSION_2,
+				      image_info_t, 0),
+
+		.image_info.image_base = BL32_BASE,
+		.image_info.image_max_size = BL32_SIZE,
+
+		.next_handoff_image_id = BL33_IMAGE_ID,
+	},
+	{
+		.image_id = BL32_EXTRA1_IMAGE_ID,
+
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP, VERSION_2,
+				      entry_point_info_t,
+				      SECURE | NON_EXECUTABLE),
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP, VERSION_2,
+				      image_info_t, IMAGE_ATTRIB_SKIP_LOADING),
+		.image_info.image_base = BL32_BASE,
+		.image_info.image_max_size =  BL32_SIZE,
+
+		.next_handoff_image_id = INVALID_IMAGE_ID,
+	},
+	{
+		/* This is a zero sized image so we don't set base or size */
+		.image_id = BL32_EXTRA2_IMAGE_ID,
+
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+				      VERSION_2, entry_point_info_t,
+				      SECURE | NON_EXECUTABLE),
+
+		SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+				      VERSION_2, image_info_t,
+				      IMAGE_ATTRIB_SKIP_LOADING),
+		.next_handoff_image_id = INVALID_IMAGE_ID,
+	},
+	{
+		.image_id = BL33_IMAGE_ID,
+		SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP, VERSION_2,
+				      entry_point_info_t,
+				      NON_SECURE | EXECUTABLE),
+		# ifdef PRELOADED_BL33_BASE
+			.ep_info.pc = PLAT_NS_IMAGE_OFFSET,
+
+			SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+					      VERSION_2, image_info_t,
+					      IMAGE_ATTRIB_SKIP_LOADING),
+		# else
+			.ep_info.pc = PLAT_NS_IMAGE_OFFSET,
+
+			SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+					      VERSION_2, image_info_t, 0),
+			.image_info.image_base = PLAT_NS_IMAGE_OFFSET,
+			.image_info.image_max_size = PLAT_NS_IMAGE_SIZE,
+		# endif /* PRELOADED_BL33_BASE */
+
+		.next_handoff_image_id = INVALID_IMAGE_ID,
+	}
+};
+
+REGISTER_BL_IMAGE_DESCS(bl2_mem_params_descs);