Refactor MediaTek platform common code
Refactor MediaTek platform common code for further mt6795 upstream.
diff --git a/plat/mediatek/common/mtk_plat_common.c b/plat/mediatek/common/mtk_plat_common.c
new file mode 100644
index 0000000..6ffbfe0
--- /dev/null
+++ b/plat/mediatek/common/mtk_plat_common.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch_helpers.h>
+#include <arm_gic.h>
+#include <bl_common.h>
+#include <cci.h>
+#include <console.h>
+#include <debug.h>
+#include <mmio.h>
+#include <mtk_plat_common.h>
+#include <mtk_sip_svc.h>
+#include <platform.h>
+#include <plat_private.h>
+#include <xlat_tables.h>
+
+struct atf_arg_t gteearg;
+
+void clean_top_32b_of_param(uint32_t smc_fid,
+ uint64_t *px1,
+ uint64_t *px2,
+ uint64_t *px3,
+ uint64_t *px4)
+{
+ /* if parameters from SMC32. Clean top 32 bits */
+ if (0 == (smc_fid & SMC_AARCH64_BIT)) {
+ *px1 = *px1 & SMC32_PARAM_MASK;
+ *px2 = *px2 & SMC32_PARAM_MASK;
+ *px3 = *px3 & SMC32_PARAM_MASK;
+ *px4 = *px4 & SMC32_PARAM_MASK;
+ }
+}
+
+#if MTK_SIP_KERNEL_BOOT_ENABLE
+static struct kernel_info k_info;
+
+static void save_kernel_info(uint64_t pc,
+ uint64_t r0,
+ uint64_t r1,
+ uint64_t k32_64)
+{
+ k_info.k32_64 = k32_64;
+ k_info.pc = pc;
+
+ if (LINUX_KERNEL_32 == k32_64) {
+ /* for 32 bits kernel */
+ k_info.r0 = 0;
+ /* machtype */
+ k_info.r1 = r0;
+ /* tags */
+ k_info.r2 = r1;
+ } else {
+ /* for 64 bits kernel */
+ k_info.r0 = r0;
+ k_info.r1 = r1;
+ }
+}
+
+uint64_t get_kernel_info_pc(void)
+{
+ return k_info.pc;
+}
+
+uint64_t get_kernel_info_r0(void)
+{
+ return k_info.r0;
+}
+
+uint64_t get_kernel_info_r1(void)
+{
+ return k_info.r1;
+}
+
+uint64_t get_kernel_info_r2(void)
+{
+ return k_info.r2;
+}
+
+void boot_to_kernel(uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4)
+{
+ static uint8_t kernel_boot_once_flag;
+ /* only support in booting flow */
+ if (0 == kernel_boot_once_flag) {
+ kernel_boot_once_flag = 1;
+
+ console_init(gteearg.atf_log_port,
+ UART_CLOCK, UART_BAUDRATE);
+ INFO("save kernel info\n");
+ save_kernel_info(x1, x2, x3, x4);
+ bl31_prepare_kernel_entry(x4);
+ INFO("el3_exit\n");
+ console_uninit();
+ }
+}
+#endif
+
+uint32_t plat_get_spsr_for_bl33_entry(void)
+{
+ unsigned int mode;
+ uint32_t spsr;
+ unsigned int ee;
+ unsigned long daif;
+
+ INFO("Secondary bootloader is AArch32\n");
+ mode = MODE32_svc;
+ ee = 0;
+ /*
+ * TODO: Choose async. exception bits if HYP mode is not
+ * implemented according to the values of SCR.{AW, FW} bits
+ */
+ daif = DAIF_ABT_BIT | DAIF_IRQ_BIT | DAIF_FIQ_BIT;
+
+ spsr = SPSR_MODE32(mode, 0, ee, daif);
+ return spsr;
+}