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/arch/arm/mach-uniphier/sbc/Makefile

@@ -0,0 +1,13 @@
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-$(CONFIG_ARCH_UNIPHIER_SLD3)	+= sbc-admulti.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD4)		+= sbc-savepin.o sbc-ld4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PRO4)	+= sbc-savepin.o
+obj-$(CONFIG_ARCH_UNIPHIER_SLD8)	+= sbc-savepin.o sbc-ld4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PRO5)	+= sbc-savepin.o
+obj-$(CONFIG_ARCH_UNIPHIER_PXS2)	+= sbc-savepin.o sbc-pxs2.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD6B)	+= sbc-savepin.o sbc-pxs2.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD11)	+= sbc-savepin.o sbc-pxs2.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD20)	+= sbc-savepin.o sbc-pxs2.o

u-boot/arch/arm/mach-uniphier/sbc/sbc-admulti.c

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/io.h>
+
+#include "../init.h"
+#include "../sg-regs.h"
+#include "sbc-regs.h"
+
+#define SBCTRL0_ADMULTIPLX_PERI_VALUE	0x33120000
+#define SBCTRL1_ADMULTIPLX_PERI_VALUE	0x03005500
+#define SBCTRL2_ADMULTIPLX_PERI_VALUE	0x14000020
+
+#define SBCTRL0_ADMULTIPLX_MEM_VALUE	0x33120000
+#define SBCTRL1_ADMULTIPLX_MEM_VALUE	0x03005500
+#define SBCTRL2_ADMULTIPLX_MEM_VALUE	0x14000010
+
+int uniphier_sbc_init_admulti(const struct uniphier_board_data *bd)
+{
+	/*
+	 * Only CS1 is connected to support card.
+	 * BKSZ[1:0] should be set to "01".
+	 */
+	writel(SBCTRL0_ADMULTIPLX_MEM_VALUE, SBCTRL10);
+	writel(SBCTRL1_ADMULTIPLX_MEM_VALUE, SBCTRL11);
+	writel(SBCTRL2_ADMULTIPLX_MEM_VALUE, SBCTRL12);
+
+	if (boot_is_swapped()) {
+		/*
+		 * Boot Swap On: boot from external NOR/SRAM
+		 * 0x42000000-0x43ffffff is a mirror of 0x40000000-0x41ffffff.
+		 *
+		 * 0x40000000-0x41efffff, 0x42000000-0x43efffff: memory bank
+		 * 0x41f00000-0x41ffffff, 0x43f00000-0x43ffffff: peripherals
+		 */
+		writel(0x0000bc01, SBBASE0);
+	} else {
+		/*
+		 * Boot Swap Off: boot from mask ROM
+		 * 0x40000000-0x41ffffff: mask ROM
+		 * 0x42000000-0x43efffff: memory bank (31MB)
+		 * 0x43f00000-0x43ffffff: peripherals (1MB)
+		 */
+		writel(0x0000be01, SBBASE0); /* dummy */
+		writel(0x0200be01, SBBASE1);
+	}
+
+	return 0;
+}

u-boot/arch/arm/mach-uniphier/sbc/sbc-ld4.c

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2011-2016 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "sbc-regs.h"
+
+int uniphier_ld4_sbc_init(const struct uniphier_board_data *bd)
+{
+	u32 tmp;
+
+	/* system bus output enable */
+	tmp = readl(PC0CTRL);
+	tmp &= 0xfffffcff;
+	writel(tmp, PC0CTRL);
+
+	return 0;
+}

u-boot/arch/arm/mach-uniphier/sbc/sbc-pxs2.c

@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2015-2016 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "sbc-regs.h"
+
+int uniphier_pxs2_sbc_init(const struct uniphier_board_data *bd)
+{
+	/* necessary for ROM boot ?? */
+	/* system bus output enable */
+	writel(0x17, PC0CTRL);
+
+	return 0;
+}

u-boot/arch/arm/mach-uniphier/sbc/sbc-regs.h

@@ -0,0 +1,88 @@
+/*
+ * UniPhier SBC (System Bus Controller) registers
+ *
+ * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef ARCH_SBC_REGS_H
+#define ARCH_SBC_REGS_H
+
+#define	SBBASE_BASE		0x58c00100
+#define	SBBASE(x)		(SBBASE_BASE + (x) * 0x10)
+
+#define	SBBASE0			(SBBASE(0))
+#define	SBBASE1			(SBBASE(1))
+#define	SBBASE2			(SBBASE(2))
+#define	SBBASE3			(SBBASE(3))
+#define	SBBASE4			(SBBASE(4))
+#define	SBBASE5			(SBBASE(5))
+#define	SBBASE6			(SBBASE(6))
+#define	SBBASE7			(SBBASE(7))
+
+#define	SBBASE_BANK_ENABLE	(0x00000001)
+
+#define	SBCTRL_BASE		0x58c00200
+#define	SBCTRL(x, y)		(SBCTRL_BASE + (x) * 0x10 + (y) * 4)
+
+#define	SBCTRL00		SBCTRL(0, 0)
+#define	SBCTRL01		SBCTRL(0, 1)
+#define	SBCTRL02		SBCTRL(0, 2)
+#define	SBCTRL03		SBCTRL(0, 3)
+#define	SBCTRL04		(SBCTRL_BASE + 0x100)
+
+#define	SBCTRL10		SBCTRL(1, 0)
+#define	SBCTRL11		SBCTRL(1, 1)
+#define	SBCTRL12		SBCTRL(1, 2)
+#define	SBCTRL13		SBCTRL(1, 3)
+#define	SBCTRL14		(SBCTRL_BASE + 0x110)
+
+#define	SBCTRL20		SBCTRL(2, 0)
+#define	SBCTRL21		SBCTRL(2, 1)
+#define	SBCTRL22		SBCTRL(2, 2)
+#define	SBCTRL23		SBCTRL(2, 3)
+#define	SBCTRL24		(SBCTRL_BASE + 0x120)
+
+#define	SBCTRL30		SBCTRL(3, 0)
+#define	SBCTRL31		SBCTRL(3, 1)
+#define	SBCTRL32		SBCTRL(3, 2)
+#define	SBCTRL33		SBCTRL(3, 3)
+#define	SBCTRL34		(SBCTRL_BASE + 0x130)
+
+#define	SBCTRL40		SBCTRL(4, 0)
+#define	SBCTRL41		SBCTRL(4, 1)
+#define	SBCTRL42		SBCTRL(4, 2)
+#define	SBCTRL43		SBCTRL(4, 3)
+#define	SBCTRL44		(SBCTRL_BASE + 0x140)
+
+#define	SBCTRL50		SBCTRL(5, 0)
+#define	SBCTRL51		SBCTRL(5, 1)
+#define	SBCTRL52		SBCTRL(5, 2)
+#define	SBCTRL53		SBCTRL(5, 3)
+#define	SBCTRL54		(SBCTRL_BASE + 0x150)
+
+#define	SBCTRL60		SBCTRL(6, 0)
+#define	SBCTRL61		SBCTRL(6, 1)
+#define	SBCTRL62		SBCTRL(6, 2)
+#define	SBCTRL63		SBCTRL(6, 3)
+#define	SBCTRL64		(SBCTRL_BASE + 0x160)
+
+#define	SBCTRL70		SBCTRL(7, 0)
+#define	SBCTRL71		SBCTRL(7, 1)
+#define	SBCTRL72		SBCTRL(7, 2)
+#define	SBCTRL73		SBCTRL(7, 3)
+#define	SBCTRL74		(SBCTRL_BASE + 0x170)
+
+#define PC0CTRL				0x598000c0
+#define ROM_BOOT_ROMRSV2		0x59801208
+
+#ifndef __ASSEMBLY__
+#include <linux/io.h>
+static inline int boot_is_swapped(void)
+{
+	return !(readl(SBBASE0) & SBBASE_BANK_ENABLE);
+}
+#endif
+
+#endif	/* ARCH_SBC_REGS_H */

u-boot/arch/arm/mach-uniphier/sbc/sbc-savepin.c

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2011-2016 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "sbc-regs.h"
+
+/* slower but LED works */
+#define SBCTRL0_SAVEPIN_PERI_VALUE	0x55450000
+#define SBCTRL1_SAVEPIN_PERI_VALUE	0x07168d00
+#define SBCTRL2_SAVEPIN_PERI_VALUE	0x34000009
+#define SBCTRL4_SAVEPIN_PERI_VALUE	0x02110110
+
+/* faster but LED does not work */
+#define SBCTRL0_SAVEPIN_MEM_VALUE	0x55450000
+#define SBCTRL1_SAVEPIN_MEM_VALUE	0x06057700
+/* NOR flash needs more wait counts than SRAM */
+#define SBCTRL2_SAVEPIN_MEM_VALUE	0x34000009
+#define SBCTRL4_SAVEPIN_MEM_VALUE	0x02110210
+
+int uniphier_sbc_init_savepin(const struct uniphier_board_data *bd)
+{
+	/*
+	 * Only CS1 is connected to support card.
+	 * BKSZ[1:0] should be set to "01".
+	 */
+	writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL10);
+	writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL11);
+	writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL12);
+	writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL14);
+
+	if (boot_is_swapped()) {
+		/*
+		 * Boot Swap On: boot from external NOR/SRAM
+		 * 0x42000000-0x43ffffff is a mirror of 0x40000000-0x41ffffff.
+		 *
+		 * 0x40000000-0x41efffff, 0x42000000-0x43efffff: memory bank
+		 * 0x41f00000-0x41ffffff, 0x43f00000-0x43ffffff: peripherals
+		 */
+		writel(0x0000bc01, SBBASE0);
+	} else {
+		/*
+		 * Boot Swap Off: boot from mask ROM
+		 * 0x40000000-0x41ffffff: mask ROM
+		 * 0x42000000-0x43efffff: memory bank (31MB)
+		 * 0x43f00000-0x43ffffff: peripherals (1MB)
+		 */
+		writel(0x0000be01, SBBASE0); /* dummy */
+		writel(0x0200be01, SBBASE1);
+	}
+
+	return 0;
+}