feat(mt8188): add armv8.2 support
Add armv8.2 support for MT8188.
Change-Id: I0ac865949ba864fb207ee1f0937092cbabd550de
diff --git a/plat/mediatek/helpers/armv8_2/arch_helpers.S b/plat/mediatek/helpers/armv8_2/arch_helpers.S
new file mode 100644
index 0000000..02d8d53
--- /dev/null
+++ b/plat/mediatek/helpers/armv8_2/arch_helpers.S
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2022, Mediatek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <cpu_macros.S>
+#if CONFIG_MTK_MCUSYS
+#include <mcucfg.h>
+#endif
+#include <platform_def.h>
+ /*
+ * Declare as weak function so that can be
+ * overwritten by platform helpers
+ */
+ .weak platform_mem_init
+ .weak plat_core_pos_by_mpidr
+ .weak plat_my_core_pos
+ .weak plat_mediatek_calc_core_pos
+ .global plat_mpidr_by_core_pos
+ .global plat_reset_handler
+
+ /* -----------------------------------------------------
+ * unsigned long plat_mpidr_by_core_pos(uint32_t cpuid)
+ * This function calcuate mpidr by cpu pos if cpu
+ * topology is linear.
+ *
+ * Clobbers: x0-x1
+ * -----------------------------------------------------
+ */
+func plat_mpidr_by_core_pos
+ lsl x0, x0, #MPIDR_AFF1_SHIFT
+ mrs x1, mpidr_el1
+ and x1, x1, #MPIDR_MT_MASK
+ orr x0, x0, x1
+ ret
+endfunc plat_mpidr_by_core_pos
+
+ /* -----------------------------------------------------
+ * unsigned int plat_my_core_pos(void)
+ * This function uses the plat_arm_calc_core_pos()
+ * definition to get the index of the calling CPU.
+ * -----------------------------------------------------
+ */
+func plat_my_core_pos
+ mrs x0, mpidr_el1
+ b plat_mediatek_calc_core_pos
+endfunc plat_my_core_pos
+
+ /* -----------------------------------------------------
+ * int plat_mediatek_calc_core_pos(u_register_t mpidr);
+ *
+ * In ARMv8.2, AFF2 is cluster id, AFF1 is core id and
+ * AFF0 is thread id. There is only one cluster in ARMv8.2
+ * and one thread in current implementation.
+ *
+ * With this function: CorePos = CoreID (AFF1)
+ * we do it with x0 = (x0 >> 8) & 0xff
+ * -----------------------------------------------------
+ */
+func plat_mediatek_calc_core_pos
+ b plat_core_pos_by_mpidr
+endfunc plat_mediatek_calc_core_pos
+
+ /* ------------------------------------------------------
+ * int32_t plat_core_pos_by_mpidr(u_register_t mpidr)
+ *
+ * This function implements a part of the critical
+ * interface between the psci generic layer and the
+ * platform that allows the former to query the platform
+ * to convert an MPIDR to a unique linear index.
+ *
+ * Clobbers: x0-x1
+ * ------------------------------------------------------
+ */
+func plat_core_pos_by_mpidr
+ mov x1, #MPIDR_AFFLVL_MASK
+ and x0, x1, x0, lsr #MPIDR_AFF1_SHIFT
+ ret
+endfunc plat_core_pos_by_mpidr
+
+ /* --------------------------------------------------------
+ * void platform_mem_init (void);
+ *
+ * Any memory init, relocation to be done before the
+ * platform boots. Called very early in the boot process.
+ * --------------------------------------------------------
+ */
+func platform_mem_init
+ ret
+endfunc platform_mem_init
+
+func plat_reset_handler
+#if CONFIG_MTK_MCUSYS
+ mov x10, x30
+ bl plat_my_core_pos
+ mov x30, x10
+ mov w1, #0x1
+ lsl w1, w1, w0
+ ldr x0, =CPC_MCUSYS_CPU_ON_SW_HINT_SET
+ str w1, [x0]
+ dsb sy
+#endif
+
+#if CONFIG_MTK_ECC
+ mov x10, x30
+ /* enable sequence of ecc for cpus */
+ bl disable_core_ecc
+ bl ft_ecc_clear_per_core
+ bl enable_core_ecc
+ mov x30, x10
+#endif
+
+ ret
+endfunc plat_reset_handler
diff --git a/plat/mediatek/helpers/rules.mk b/plat/mediatek/helpers/rules.mk
new file mode 100644
index 0000000..ae8068e
--- /dev/null
+++ b/plat/mediatek/helpers/rules.mk
@@ -0,0 +1,12 @@
+#
+# Copyright (c) 2022, MediaTek Inc. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+LOCAL_DIR := $(call GET_LOCAL_DIR)
+
+MODULE := helpers
+LOCAL_SRCS-y += $(LOCAL_DIR)/$(ARCH_VERSION)/arch_helpers.S
+
+$(eval $(call MAKE_MODULE,$(MODULE),$(LOCAL_SRCS-y),$(MTK_BL)))