GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2016 Marvell International Ltd.
+ */
+
+#include <asm/arch-armada8k/cache_llc.h>
+#include <linux/linkage.h>
+
+/*
+ * int __asm_flush_l3_dcache
+ *
+ * flush Armada-8K last level cache.
+ *
+ */
+ENTRY(__asm_flush_l3_dcache)
+	/* flush cache */
+	mov     x0, #LLC_BASE_ADDR
+	add	x0, x0, #LLC_FLUSH_BY_WAY
+	movk    x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16
+	mov     w1, #LLC_WAY_MASK
+	str     w1, [x0]
+	/* sync cache */
+	mov     x0, #LLC_BASE_ADDR
+	add	x0, x0, #LLC_CACHE_SYNC
+	movk    x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16
+	str     wzr, [x0]
+	/* check that cache sync completed */
+	mov     x0, #LLC_BASE_ADDR
+	add	x0, x0, #LLC_CACHE_SYNC_COMPLETE
+	movk    x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16
+1:	ldr	w1, [x0]
+	and	w1, w1, #LLC_CACHE_SYNC_MASK
+	cbnz	w1, 1b
+	/* return success */
+	mov	x0, #0
+	ret
+ENDPROC(__asm_flush_l3_dcache)