Merge branch 'u-boot-sh/rmobile' into 'u-boot-arm/master'

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S b/arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S
new file mode 100644
index 0000000000..e07cc8093a
--- /dev/null
+++ b/arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S
@@ -0,0 +1,60 @@
+/*
+ * arch/arm/cpu/armv7/rmobile/lowlevel_init_ca15.S
+ *     This file is lager low level initialize.
+ *
+ * Copyright (C) 2013 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+ENTRY(lowlevel_init)
+	mrc	p15, 0, r4, c0, c0, 5 /* mpidr */
+	orr	r4, r4, r4, lsr #6
+	and	r4, r4, #7 /* id 0-3 = ca15.0,1,2,3 */
+
+	b do_lowlevel_init
+
+	.pool
+
+/*
+ * CPU ID #1-#3 come here
+ */
+	.align  4
+do_cpu_waiting:
+	ldr	r1, =0xe6180000 /* sysc */
+1:	ldr	r0, [r1, #0x20] /* sbar */
+	tst	r0, r0
+	beq	1b
+	bx	r0
+
+/*
+ * Only CPU ID #0 comes here
+ */
+	.align  4
+do_lowlevel_init:
+	/* surpress wfe if ca15 */
+	tst	r4, #4
+	mrceq p15, 0, r0, c1, c0, 1	/* actlr */
+	orreq r0, r0, #(1<<7)
+	mcreq p15, 0, r0, c1, c0, 1
+	/* and set l2 latency */
+	mrceq p15, 1, r0, c9, c0, 2	/* l2ctlr */
+	orreq r0, r0, #0x00000800
+	orreq r0, r0, #0x00000003
+	mcreq p15, 1, r0, c9, c0, 2
+
+	ldr	r3, =(CONFIG_SYS_INIT_SP_ADDR)
+	sub	sp, r3, #4
+	str	lr, [sp]
+
+	/* initialize system */
+	bl s_init
+
+	ldr	lr, [sp]
+	mov	pc, lr
+	nop
+ENDPROC(lowlevel_init)
+	.ltorg