1 files changed, 112 insertions, 0 deletions
diff --git a/plat/marvell/armada/a8k/common/aarch64/plat_helpers.S b/plat/marvell/armada/a8k/common/aarch64/plat_helpers.S
new file mode 100644
index 0000000..fadc4c2
--- /dev/null
+++ b/plat/marvell/armada/a8k/common/aarch64/plat_helpers.S
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <asm_macros.S>
+#include <platform_def.h>
+#include <marvell_pm.h>
+
+	.globl	plat_secondary_cold_boot_setup
+	.globl	plat_get_my_entrypoint
+	.globl	plat_is_my_cpu_primary
+	.globl  plat_reset_handler
+
+	/* -----------------------------------------------------
+	 * void plat_secondary_cold_boot_setup (void);
+	 *
+	 * This function performs any platform specific actions
+	 * needed for a secondary cpu after a cold reset. Right
+	 * now this is a stub function.
+	 * -----------------------------------------------------
+	 */
+func plat_secondary_cold_boot_setup
+	mov	x0, #0
+	ret
+endfunc plat_secondary_cold_boot_setup
+
+	/* ---------------------------------------------------------------------
+	 * unsigned long plat_get_my_entrypoint (void);
+	 *
+	 * Main job of this routine is to distinguish
+	 * between a cold and warm boot
+	 * For a cold boot, return 0.
+	 * For a warm boot, read the mailbox and return the address it contains.
+	 *
+	 * ---------------------------------------------------------------------
+	 */
+func plat_get_my_entrypoint
+	/* Read first word and compare it with magic num */
+	mov_imm x0, PLAT_MARVELL_MAILBOX_BASE
+	ldr     x1, [x0]
+	mov_imm x2, MVEBU_MAILBOX_MAGIC_NUM
+	cmp     x1, x2
+	beq     warm_boot  /* If compare failed, return 0, i.e. cold boot */
+	mov     x0, #0
+	ret
+warm_boot:
+	mov_imm x1, MBOX_IDX_SEC_ADDR		/* Get the jump address */
+	subs	x1, x1, #1
+	mov	x2, #(MBOX_IDX_SEC_ADDR * 8)
+	lsl	x3, x2, x1
+	add     x0, x0, x3
+	ldr     x0, [x0]
+	ret
+endfunc plat_get_my_entrypoint
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_is_my_cpu_primary (void);
+	 *
+	 * Find out whether the current cpu is the primary
+	 * cpu.
+	 * -----------------------------------------------------
+	 */
+func plat_is_my_cpu_primary
+	mrs	x0, mpidr_el1
+	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
+	cmp	x0, #MVEBU_PRIMARY_CPU
+	cset	w0, eq
+	ret
+endfunc plat_is_my_cpu_primary
+
+        /* -----------------------------------------------------
+	 * void plat_reset_handler (void);
+         *
+	 * Platform specific configuration right after cpu is
+	 * is our of reset.
+	 *
+         * The plat_reset_handler can clobber x0 - x18, x30.
+         * -----------------------------------------------------
+         */
+func plat_reset_handler
+	/*
+	 * Note: the configurations below  should be done before MMU,
+	 *	  I Cache and L2are enabled.
+	 *	  The reset handler is executed right after reset
+	 * 	  and before Caches are enabled.
+	 */
+
+	/* Enable L1/L2 ECC and Parity */
+	mrs x5, s3_1_c11_c0_2  /* L2 Ctrl */
+	orr x5, x5, #(1 << 21) /* Enable L1/L2 cache ECC & Parity */
+	msr s3_1_c11_c0_2, x5  /* L2 Ctrl */
+
+#if LLC_ENABLE
+	/*
+	 * Enable L2 UniqueClean evictions
+	 *  Note: this configuration assumes that LLC is configured
+	 *	  in exclusive mode.
+	 *	  Later on in the code this assumption will be validated
+	 */
+	mrs x5, s3_1_c15_c0_0  /* L2 Ctrl */
+	orr x5, x5, #(1 << 14) /* Enable UniqueClean evictions with data */
+	msr s3_1_c15_c0_0, x5  /* L2 Ctrl */
+#endif
+
+	/* Instruction Barrier to allow msr command completion */
+	isb
+
+        ret
+endfunc plat_reset_handler