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

source/trusted-firmware/trusted-firmware-a-2.8/plat/nxp/soc-lx2160a/aarch64/lx2160a_helpers.S

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2018-2020 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+
+#include <platform_def.h>
+
+.globl	plat_secondary_cold_boot_setup
+.globl	plat_is_my_cpu_primary
+.globl	plat_reset_handler
+.globl  platform_mem_init
+
+
+func platform_mem1_init
+	ret
+endfunc platform_mem1_init
+
+
+func platform_mem_init
+	ret
+endfunc	platform_mem_init
+
+
+func apply_platform_errata
+
+	ret
+endfunc apply_platform_errata
+
+
+func plat_reset_handler
+	mov x29, x30
+	bl  apply_platform_errata
+
+#if defined(IMAGE_BL31)
+	ldr x0, =POLICY_SMMU_PAGESZ_64K
+	cbz x0, 1f
+	/* Set the SMMU page size in the sACR register */
+	bl _set_smmu_pagesz_64
+#endif
+1:
+	mov x30, x29
+
+	ret
+endfunc 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 e.g
+ * mark the cpu's presence, mechanism to place it in a
+ * holding pen etc.
+ */
+func plat_secondary_cold_boot_setup
+	/* lx2160a does not do cold boot for secondary CPU */
+cb_panic:
+	b	cb_panic
+endfunc plat_secondary_cold_boot_setup
+
+
+/* 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, 0x0
+	cset	w0, eq
+	ret
+endfunc plat_is_my_cpu_primary