1 files changed, 99 insertions, 0 deletions
diff --git a/plat/marvell/armada/a8k/common/ble/ble_main.c b/plat/marvell/armada/a8k/common/ble/ble_main.c
new file mode 100644
index 0000000..5b3acec
--- /dev/null
+++ b/plat/marvell/armada/a8k/common/ble/ble_main.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <string.h>
+
+#include <platform_def.h>
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/console.h>
+
+#include <marvell_plat_priv.h>
+#include <marvell_pm.h>
+#include <plat_marvell.h>
+
+#define BR_FLAG_SILENT		0x1
+#define SKIP_IMAGE_CODE		0xDEADB002
+
+void mailbox_clean(void)
+{
+	uintptr_t *mailbox = (void *)PLAT_MARVELL_MAILBOX_BASE;
+
+	memset(mailbox, 0, PLAT_MARVELL_MAILBOX_SIZE);
+}
+
+int exec_ble_main(int bootrom_flags)
+{
+	int skip = 0;
+	uintptr_t *mailbox = (void *)PLAT_MARVELL_MAILBOX_BASE;
+
+	/*
+	 * In some situations, like boot from UART, bootrom will
+	 * request to avoid printing to console. in that case don't
+	 * initialize the console and prints will be ignored
+	 */
+	if ((bootrom_flags & BR_FLAG_SILENT) == 0)
+		marvell_console_boot_init();
+
+	NOTICE("Starting binary extension\n");
+
+	/* initialize time (for delay functionality) */
+	plat_delay_timer_init();
+
+	ble_plat_setup(&skip);
+
+	/* if there's skip image request, bootrom will load from the image
+	 * saved on the next address of the flash
+	 */
+	if (skip)
+		return SKIP_IMAGE_CODE;
+
+	/*
+	 * Check if the mailbox magic number is stored at index MBOX_IDX_MAGIC
+	 * and the suspend to RAM magic number at index MBOX_IDX_SUSPEND_MAGIC.
+	 * If the above is true, this is the recovery from suspend to RAM state.
+	 * In such case the mailbox should remain intact, since it stores the
+	 * warm boot jump address to be used by the TF-A in BL31.
+	 * Othervise the mailbox should be cleaned from a garbage data.
+	 */
+	if (mailbox[MBOX_IDX_MAGIC] != MVEBU_MAILBOX_MAGIC_NUM ||
+	    mailbox[MBOX_IDX_SUSPEND_MAGIC] != MVEBU_MAILBOX_SUSPEND_STATE) {
+		NOTICE("Cold boot\n");
+		mailbox_clean();
+	} else {
+		void (*bootrom_exit)(void) =
+			(void (*)(void))mailbox[MBOX_IDX_ROM_EXIT_ADDR];
+
+		INFO("Recovery...\n");
+		/*
+		 * If this is recovery from suspend, two things has to be done:
+		 * 1. Define the DRAM region as executable memory for preparing
+		 *    jump to TF-A
+		 * 2. Instead of returning control to the BootROM, invalidate
+		 *    and flush caches, and continue execution at address stored
+		 *    in the mailbox.
+		 * This should be done until the BootROM have a native support
+		 * for the system restore flow.
+		 */
+		marvell_ble_prepare_exit();
+		bootrom_exit();
+	}
+
+	return 0;
+}
+
+/* NOTE: don't notify this function, all code must be added to exec_ble_main
+ * in order to keep the end of ble_main as a fixed address.
+ */
+int  __attribute__ ((section(".entry"))) ble_main(int bootrom_flags)
+{
+	volatile int ret;
+
+	ret = exec_ble_main(bootrom_flags);
+	return ret;
+}