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/shmin/Kconfig

@@ -0,0 +1,9 @@
+if TARGET_SHMIN
+
+config SYS_BOARD
+	default "shmin"
+
+config SYS_CONFIG_NAME
+	default "shmin"
+
+endif

u-boot/board/shmin/MAINTAINERS

@@ -0,0 +1,7 @@
+SHMIN BOARD
+M:	Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
+M:	Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+S:	Maintained
+F:	board/shmin/
+F:	include/configs/shmin.h
+F:	configs/shmin_defconfig

u-boot/board/shmin/Makefile

@@ -0,0 +1,10 @@
+#
+# Copyright (C) 2010 Nobuhiro Iwamatsu
+# Copyright (C) 2008 Renesas Solutions Corp.
+#
+# u-boot/board/shmin/Makefile
+#
+# SPDX-License-Identifier:	GPL-2.0+
+
+obj-y	:= shmin.o
+obj-y	+= lowlevel_init.o

u-boot/board/shmin/lowlevel_init.S

@@ -0,0 +1,22 @@
+/*
+ * (C) Copyright 2008, 2010 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+
+#include <asm/processor.h>
+#include <asm/macro.h>
+
+
+	.global	lowlevel_init
+
+	.text
+	.align	2
+
+lowlevel_init:
+	/* Use setting of original bootloader */
+	rts
+	nop
+	.align 2

u-boot/board/shmin/shmin.c

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2007 - 2010
+ *     Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * (C) Copyright 2000-2003
+ *     Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ *
+ * board/shmin/shmin.c
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Copy board_flash_get_legacy() from board/freescale/m54455evb/m54455evb.c
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <netdev.h>
+
+int checkboard(void)
+{
+	puts("BOARD: T-SH7706LAN ");
+	if(readb(0xb0008006) == 0xab)
+		puts("v2\n");
+	else
+		puts("v1\n");
+	return 0;
+}
+
+int board_init(void)
+{
+	writew(0x2980, BCR2);
+	return 0;
+}
+
+int dram_init(void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
+	printf("DRAM:  %dMB\n", CONFIG_SYS_SDRAM_SIZE / (1024 * 1024));
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	return ne2k_register();
+}
+
+void led_set_state(unsigned short value)
+{
+
+}
+
+#if defined(CONFIG_FLASH_CFI_LEGACY)
+#include <flash.h>
+ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
+{
+	int sect[] = CONFIG_SYS_ATMEL_SECT;
+	int sectsz[] = CONFIG_SYS_ATMEL_SECTSZ;
+		int i, j, k;
+
+	if (base != CONFIG_SYS_ATMEL_BASE)
+		return 0;
+
+	info->flash_id			= 0x01000000;
+	info->portwidth			= 1;
+	info->chipwidth			= 1;
+	info->buffer_size		= 1;
+	info->erase_blk_tout	= 16384;
+	info->write_tout		= 2;
+	info->buffer_write_tout	= 5;
+	info->vendor			= 0xFFF0; /* CFI_CMDSET_AMD_LEGACY */
+	info->cmd_reset			= 0x00F0;
+	info->interface			= FLASH_CFI_X8;
+	info->legacy_unlock		= 0;
+	info->manufacturer_id	= (u16) ATM_MANUFACT;
+	info->device_id			= ATM_ID_LV040;
+	info->device_id2		= 0;
+	info->ext_addr			= 0;
+	info->cfi_version		= 0x3133;
+	info->cfi_offset		= 0x0000;
+	info->addr_unlock1		= 0x00000555;
+	info->addr_unlock2		= 0x000002AA;
+	info->name				= "CFI conformant";
+	info->size				= 0;
+	info->sector_count		= CONFIG_SYS_ATMEL_TOTALSECT;
+	info->start[0] = base;
+
+	for (k = 0, i = 0; i < CONFIG_SYS_ATMEL_REGION; i++) {
+		info->size += sect[i] * sectsz[i];
+		for (j = 0; j < sect[i]; j++, k++) {
+			info->start[k + 1] = info->start[k] + sectsz[i];
+			info->protect[k] = 0;
+		}
+	}
+
+	return 1;
+}
+#endif /* CONFIG_FLASH_CFI_LEGACY */