plat/mediatek/mt81*: Use new bl31_params_parse() helper

The Mediatek MT8173/MT8183 SoCs are prime candidates for switching to
the new bl31_params_parse() helper, so switch them over. This will allow
BL2 implementations on these platforms to transparently switch over to
the version 2 parameter structure.

Change-Id: I0d17ba6c455102d325a06503d2078a76d12b5deb
Signed-off-by: Julius Werner <jwerner@chromium.org>

plat/mediatek/mt8173/bl31_plat_setup.c

 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,6 +8,7 @@
 
 #include <common/bl_common.h>
 #include <common/debug.h>
+#include <common/desc_image_load.h>
 #include <drivers/console.h>
 #include <drivers/generic_delay_timer.h>
 #include <lib/mmio.h>
@@ -79,6 +80,7 @@ entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
 	entry_point_info_t *next_image_info;
 
 	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;
+	assert(next_image_info->h.type == PARAM_EP);
 
 	/* None of the images on this platform can have 0x0 as the entrypoint */
 	if (next_image_info->pc)
@@ -98,18 +100,11 @@ entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
 				u_register_t arg2, u_register_t arg3)
 {
-	struct mtk_bl31_params *arg_from_bl2 = (struct mtk_bl31_params *)arg0;
-
 	console_init(MT8173_UART0_BASE, MT8173_UART_CLOCK, MT8173_BAUDRATE);
 
 	VERBOSE("bl31_setup\n");
 
-	assert(arg_from_bl2 != NULL);
-	assert(arg_from_bl2->h.type == PARAM_BL31);
-	assert(arg_from_bl2->h.version >= VERSION_1);
-
-	bl32_ep_info = *arg_from_bl2->bl32_ep_info;
-	bl33_ep_info = *arg_from_bl2->bl33_ep_info;
+	bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info);
 }
 
 /*******************************************************************************

plat/mediatek/mt8173/platform.mk

@@ -23,7 +23,8 @@ PLAT_BL_COMMON_SOURCES	:=	lib/xlat_tables/xlat_tables_common.c		\
 				plat/arm/common/arm_gicv2.c			\
 				plat/common/plat_gicv2.c
 
-BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
+BL31_SOURCES		+=	common/desc_image_load.c			\
+				drivers/arm/cci/cci.c				\
 				drivers/arm/gic/common/gic_common.c		\
 				drivers/arm/gic/v2/gicv2_main.c			\
 				drivers/arm/gic/v2/gicv2_helpers.c		\

plat/mediatek/mt8183/bl31_plat_setup.c

@@ -7,6 +7,7 @@
 #include <assert.h>
 #include <arch_helpers.h>
 #include <common/bl_common.h>
+#include <common/desc_image_load.h>
 #include <plat/common/common_def.h>
 #include <drivers/console.h>
 #include <common/debug.h>
@@ -50,6 +51,7 @@ entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
 	entry_point_info_t *next_image_info;
 
 	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;
+	assert(next_image_info->h.type == PARAM_EP);
 
 	/* None of the images on this platform can have 0x0 as the entrypoint */
 	if (next_image_info->pc)
@@ -69,19 +71,13 @@ entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
 				u_register_t arg2, u_register_t arg3)
 {
-	struct mtk_bl31_params *arg_from_bl2 = (struct mtk_bl31_params *)arg0;
 	static console_16550_t console;
 
 	console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);
 
 	NOTICE("MT8183 bl31_setup\n");
 
-	assert(arg_from_bl2 != NULL);
-	assert(arg_from_bl2->h.type == PARAM_BL31);
-	assert(arg_from_bl2->h.version >= VERSION_1);
-
-	bl32_ep_info = *arg_from_bl2->bl32_ep_info;
-	bl33_ep_info = *arg_from_bl2->bl33_ep_info;
+	bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info);
 }
 
 

plat/mediatek/mt8183/platform.mk

@@ -16,7 +16,8 @@ PLAT_BL_COMMON_SOURCES := lib/xlat_tables/aarch64/xlat_tables.c       \
                           plat/common/plat_psci_common.c              \
                           plat/common/aarch64/crash_console_helpers.S
 
-BL31_SOURCES    += drivers/arm/cci/cci.c                                 \
+BL31_SOURCES    += common/desc_image_load.c                              \
+                   drivers/arm/cci/cci.c                                 \
                    drivers/arm/gic/common/gic_common.c                   \
                    drivers/arm/gic/v3/arm_gicv3_common.c                 \
                    drivers/arm/gic/v3/gicv3_helpers.c                    \