avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/board/renesas/rcar-gen2-common/common.c

@@ -0,0 +1,59 @@
+/*
+ * board/renesas/rcar-gen2-common/common.c
+ *
+ * Copyright (C) 2013 Renesas Electronics Corporation
+ * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/rmobile.h>
+#include <asm/arch/rcar-mstp.h>
+
+#define TSTR0		0x04
+#define TSTR0_STR0	0x01
+
+static struct mstp_ctl mstptbl[] = {
+	{ SMSTPCR0, MSTP0_BITS, CONFIG_SMSTP0_ENA,
+		RMSTPCR0, MSTP0_BITS, CONFIG_RMSTP0_ENA },
+	{ SMSTPCR1, MSTP1_BITS, CONFIG_SMSTP1_ENA,
+		RMSTPCR1, MSTP1_BITS, CONFIG_RMSTP1_ENA },
+	{ SMSTPCR2, MSTP2_BITS, CONFIG_SMSTP2_ENA,
+		RMSTPCR2, MSTP2_BITS, CONFIG_RMSTP2_ENA },
+	{ SMSTPCR3, MSTP3_BITS, CONFIG_SMSTP3_ENA,
+		RMSTPCR3, MSTP3_BITS, CONFIG_RMSTP3_ENA },
+	{ SMSTPCR4, MSTP4_BITS, CONFIG_SMSTP4_ENA,
+		RMSTPCR4, MSTP4_BITS, CONFIG_RMSTP4_ENA },
+	{ SMSTPCR5, MSTP5_BITS, CONFIG_SMSTP5_ENA,
+		RMSTPCR5, MSTP5_BITS, CONFIG_RMSTP5_ENA },
+	/* No MSTP6 */
+	{ SMSTPCR7, MSTP7_BITS, CONFIG_SMSTP7_ENA,
+		RMSTPCR7, MSTP7_BITS, CONFIG_RMSTP7_ENA },
+	{ SMSTPCR8, MSTP8_BITS, CONFIG_SMSTP8_ENA,
+		RMSTPCR8, MSTP8_BITS, CONFIG_RMSTP8_ENA },
+	{ SMSTPCR9, MSTP9_BITS, CONFIG_SMSTP9_ENA,
+		RMSTPCR9, MSTP9_BITS, CONFIG_RMSTP9_ENA },
+	{ SMSTPCR10, MSTP10_BITS, CONFIG_SMSTP10_ENA,
+		 RMSTPCR10, MSTP10_BITS, CONFIG_RMSTP10_ENA },
+	{ SMSTPCR11, MSTP11_BITS, CONFIG_SMSTP1_ENA,
+		 RMSTPCR11, MSTP11_BITS, CONFIG_RMSTP11_ENA },
+};
+
+void arch_preboot_os(void)
+{
+	int i;
+
+	/* stop TMU0 */
+	mstp_clrbits_le32(TMU_BASE + TSTR0, TMU_BASE + TSTR0, TSTR0_STR0);
+
+	/* Stop module clock */
+	for (i = 0; i < ARRAY_SIZE(mstptbl); i++) {
+		mstp_setclrbits_le32(mstptbl[i].s_addr, mstptbl[i].s_dis,
+				     mstptbl[i].s_ena);
+		mstp_setclrbits_le32(mstptbl[i].r_addr, mstptbl[i].r_dis,
+				     mstptbl[i].r_ena);
+	}
+}