plat: imx8mp: Add in BL2 with FIP

Adds bl2 with FIP to the build 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: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>

3 files changed, 267 insertions, 1 deletions

diff --git a/plat/imx/imx8m/imx8mp/imx8mp_bl2_el3_setup.c b/plat/imx/imx8m/imx8mp/imx8mp_bl2_el3_setup.c
new file mode 100644
index 000000000..fd2b5b27f
--- /dev/null
+++ b/plat/imx/imx8m/imx8mp/imx8mp_bl2_el3_setup.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2020 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include <arch_helpers.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <common/desc_image_load.h>
+#include <context.h>
+#include <drivers/arm/tzc380.h>
+#include <drivers/console.h>
+#include <drivers/generic_delay_timer.h>
+#include <drivers/mmc.h>
+#include <lib/el3_runtime/context_mgmt.h>
+#include <lib/mmio.h>
+#include <lib/optee_utils.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
+#include <plat/common/platform.h>
+#include <tbbr_img_def.h>
+
+#include <gpc.h>
+#include <imx_aipstz.h>
+#include <imx_uart.h>
+#include <imx_rdc.h>
+#include <imx8m_caam.h>
+#include <platform_def.h>
+#include <plat_imx8.h>
+
+#include "imx8mp_private.h"
+
+static const struct aipstz_cfg aipstz[] = {
+	{IMX_AIPSTZ1, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
+	{IMX_AIPSTZ2, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
+	{IMX_AIPSTZ3, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
+	{IMX_AIPSTZ4, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
+	{0},
+};
+
+void bl2_el3_early_platform_setup(u_register_t arg0, u_register_t arg1,
+		u_register_t arg2, u_register_t arg3)
+{
+	static console_t console;
+	unsigned int i;
+
+	/* Enable CSU NS access permission */
+	for (i = 0; i < 64; i++) {
+		mmio_write_32(IMX_CSU_BASE + i * 4, 0x00ff00ff);
+	}
+
+	imx_aipstz_init(aipstz);
+
+	console_imx_uart_register(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ,
+		IMX_CONSOLE_BAUDRATE, &console);
+
+	generic_delay_timer_init();
+
+	/* select the CKIL source to 32K OSC */
+	mmio_write_32(IMX_ANAMIX_BASE + ANAMIX_MISC_CTL, 0x1);
+
+	/* Open handles to a FIP image */
+	plat_imx8mp_io_setup();
+}
+
+void bl2_el3_plat_arch_setup(void)
+{
+}
+
+void bl2_platform_setup(void)
+{
+}
+
+int bl2_plat_handle_post_image_load(unsigned int image_id)
+{
+	int err = 0;
+	bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
+	bl_mem_params_node_t *pager_mem_params = NULL;
+	bl_mem_params_node_t *paged_mem_params = NULL;
+
+	assert(bl_mem_params);
+
+	switch (image_id) {
+	case BL32_IMAGE_ID:
+		pager_mem_params = get_bl_mem_params_node(BL32_EXTRA1_IMAGE_ID);
+		assert(pager_mem_params);
+
+		paged_mem_params = get_bl_mem_params_node(BL32_EXTRA2_IMAGE_ID);
+		assert(paged_mem_params);
+
+		err = parse_optee_header(&bl_mem_params->ep_info,
+					 &pager_mem_params->image_info,
+					 &paged_mem_params->image_info);
+		if (err != 0) {
+			WARN("OPTEE header parse error.\n");
+		}
+
+		break;
+	default:
+		/* Do nothing in default case */
+		break;
+	}
+
+	return err;
+}
+
+unsigned int plat_get_syscnt_freq2(void)
+{
+	return COUNTER_FREQUENCY;
+}
+
+void bl2_plat_runtime_setup(void)
+{
+	return;
+}
diff --git a/plat/imx/imx8m/imx8mp/imx8mp_bl2_mem_params_desc.c b/plat/imx/imx8m/imx8mp/imx8mp_bl2_mem_params_desc.c
new file mode 100644
index 000000000..c40609517
--- /dev/null
+++ b/plat/imx/imx8m/imx8mp/imx8mp_bl2_mem_params_desc.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2020, 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);
diff --git a/plat/imx/imx8m/imx8mp/platform.mk b/plat/imx/imx8m/imx8mp/platform.mk
index d7999d846..6cc6b082e 100644
--- a/plat/imx/imx8m/imx8mp/platform.mk
+++ b/plat/imx/imx8m/imx8mp/platform.mk
@@ -6,7 +6,9 @@
 
 PLAT_INCLUDES		:=	-Iplat/imx/common/include		\
 				-Iplat/imx/imx8m/include		\
-				-Iplat/imx/imx8m/imx8mp/include
+				-Iplat/imx/imx8m/imx8mp/include		\
+				-Idrivers/imx/usdhc			\
+				-Iinclude/common/tbbr
 # Translation tables library
 include lib/xlat_tables_v2/xlat_tables.mk
 
@@ -47,6 +49,58 @@ BL31_SOURCES		+=	plat/imx/common/imx8_helpers.S			\
 				${IMX_GIC_SOURCES}				\
 				${XLAT_TABLES_LIB_SRCS}
 
+ifeq (${NEED_BL2},yes)
+BL2_SOURCES		+=	common/desc_image_load.c			\
+				plat/imx/common/imx8_helpers.S			\
+				plat/imx/common/imx_uart_console.S		\
+				plat/imx/imx8m/imx8mp/imx8mp_bl2_el3_setup.c	\
+				plat/imx/imx8m/imx8mp/gpc.c			\
+				plat/imx/imx8m/imx_aipstz.c			\
+				plat/imx/imx8m/imx_rdc.c			\
+				plat/imx/imx8m/imx8m_caam.c			\
+				plat/common/plat_psci_common.c			\
+				lib/cpus/aarch64/cortex_a53.S			\
+				drivers/arm/tzc/tzc380.c			\
+				drivers/delay_timer/delay_timer.c		\
+				drivers/delay_timer/generic_delay_timer.c	\
+				${PLAT_GIC_SOURCES}				\
+				${PLAT_DRAM_SOURCES}				\
+				${XLAT_TABLES_LIB_SRCS}				\
+				drivers/mmc/mmc.c				\
+				drivers/io/io_block.c				\
+				drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				drivers/io/io_storage.c				\
+				drivers/imx/usdhc/imx_usdhc.c			\
+				plat/imx/imx8m/imx8mp/imx8mp_bl2_mem_params_desc.c	\
+				plat/imx/imx8m/imx8mp/imx8mp_io_storage.c		\
+				plat/imx/imx8m/imx8mp/imx8mp_image_load.c		\
+				lib/optee/optee_utils.c
+endif
+
+# Add the build options to pack BLx images and kernel device tree
+# in the FIP if the platform requires.
+ifneq ($(BL2),)
+RESET_TO_BL31		:=	0
+$(eval $(call TOOL_ADD_PAYLOAD,${BUILD_PLAT}/tb_fw.crt,--tb-fw-cert))
+endif
+ifneq ($(BL32_EXTRA1),)
+$(eval $(call TOOL_ADD_IMG,BL32_EXTRA1,--tos-fw-extra1))
+endif
+ifneq ($(BL32_EXTRA2),)
+$(eval $(call TOOL_ADD_IMG,BL32_EXTRA2,--tos-fw-extra2))
+endif
+ifneq ($(HW_CONFIG),)
+$(eval $(call TOOL_ADD_IMG,HW_CONFIG,--hw-config))
+endif
+
+ifeq (${NEED_BL2},yes)
+$(eval $(call add_define,NEED_BL2))
+LOAD_IMAGE_V2		:=	1
+# Non-TF Boot ROM
+BL2_AT_EL3		:=	1
+endif
+
 USE_COHERENT_MEM	:=	1
 RESET_TO_BL31		:=	1
 A53_DISABLE_NON_TEMPORAL_HINT := 0