feat(mt8186): initialize platform for MediaTek MT8186
- Add basic platform setup.
- Add MT8186 documentation at docs/plat/.
- Add generic CPU helper functions.
- Add basic register address.
TEST=build pass
BUG=b:202871018
Change-Id: Id3e2f46a8c3ab2f3e29137e508d4c671e8f4aad5
diff --git a/plat/mediatek/mt8186/bl31_plat_setup.c b/plat/mediatek/mt8186/bl31_plat_setup.c
new file mode 100644
index 0000000..3fd1c71
--- /dev/null
+++ b/plat/mediatek/mt8186/bl31_plat_setup.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* System Includes */
+#include <assert.h>
+
+/* Project Includes */
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <common/desc_image_load.h>
+#include <drivers/ti/uart/uart_16550.h>
+#include <lib/coreboot.h>
+
+/* Platform Includes */
+#include <plat_params.h>
+#include <plat_private.h>
+
+static entry_point_info_t bl32_ep_info;
+static entry_point_info_t bl33_ep_info;
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+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) {
+ return next_image_info;
+ } else {
+ return NULL;
+ }
+}
+
+/*******************************************************************************
+ * Perform any BL31 early platform setup. Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they
+ * are lost (potentially). This needs to be done before the MMU is initialized
+ * so that the memory layout can be used while creating page tables.
+ * BL2 has flushed this information to memory, so we are guaranteed to pick up
+ * good data.
+ ******************************************************************************/
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+ u_register_t arg2, u_register_t arg3)
+{
+ static console_t console;
+
+ params_early_setup(arg1);
+
+#if COREBOOT
+ if (coreboot_serial.type) {
+ console_16550_register(coreboot_serial.baseaddr,
+ coreboot_serial.input_hertz,
+ coreboot_serial.baud,
+ &console);
+ }
+#else
+ console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);
+#endif
+
+ INFO("MT8186 bl31_setup\n");
+
+ bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info);
+}
+
+
+/*******************************************************************************
+ * Perform any BL31 platform setup code
+ ******************************************************************************/
+void bl31_platform_setup(void)
+{
+}
+
+/*******************************************************************************
+ * Perform the very early platform specific architectural setup here. At the
+ * moment this is only intializes the mmu in a quick and dirty way.
+ ******************************************************************************/
+void bl31_plat_arch_setup(void)
+{
+ plat_configure_mmu_el3(BL31_START,
+ BL31_END - BL31_START,
+ BL_CODE_BASE,
+ BL_CODE_END);
+}