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/tqc/tqm8xx/load_sernum_ethaddr.c

@@ -0,0 +1,89 @@
+/*
+ * (C) Copyright 2000, 2001, 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+
+/*-----------------------------------------------------------------------
+ * Process Hardware Information Block:
+ *
+ * If we boot on a system fresh from factory, check if the Hardware
+ * Information Block exists and save the information it contains.
+ *
+ * The TQM8xxL / TQM82xx Hardware Information Block is defined as
+ * follows:
+ * - located in first flash bank
+ * - starts at offset 0x0003FFC0
+ * - size 0x00000040
+ *
+ * Internal structure:
+ * - sequence of ASCII character strings
+ * - fields separated by a single space character (0x20)
+ * - last field terminated by NUL character (0x00)
+ * - remaining space filled with NUL characters (0x00)
+ *
+ * Fields in Hardware Information Block:
+ * 1) Module Type
+ * 2) Serial Number
+ * 3) First MAC Address
+ * 4) Number of additional MAC addresses
+ */
+
+void load_sernum_ethaddr (void)
+{
+	unsigned char *hwi;
+	unsigned char  serial [CONFIG_SYS_HWINFO_SIZE];
+	unsigned char  ethaddr[CONFIG_SYS_HWINFO_SIZE];
+	unsigned short ih, is, ie, part;
+
+	hwi = (unsigned char *)(CONFIG_SYS_FLASH_BASE + CONFIG_SYS_HWINFO_OFFSET);
+	ih = is = ie = 0;
+
+	if (*((unsigned long *)hwi) != (unsigned long)CONFIG_SYS_HWINFO_MAGIC) {
+		return;
+	}
+
+	part = 1;
+
+	/* copy serial # / MAC address */
+	while ((hwi[ih] != '\0') && (ih < CONFIG_SYS_HWINFO_SIZE)) {
+		if (hwi[ih] < ' ' || hwi[ih] > '~') { /* ASCII strings! */
+			return;
+		}
+		switch (part) {
+		default:		/* Copy serial # */
+			if (hwi[ih] == ' ') {
+				++part;
+			}
+			serial[is++] = hwi[ih];
+			break;
+		case 3:			/* Copy MAC address */
+			if (hwi[ih] == ' ') {
+				++part;
+				break;
+			}
+			ethaddr[ie++] = hwi[ih];
+			if ((ie % 3) == 2)
+				ethaddr[ie++] = ':';
+			break;
+		}
+		++ih;
+	}
+	serial[is]  = '\0';
+	if (ie && ethaddr[ie-1] == ':')
+		--ie;
+	ethaddr[ie] = '\0';
+
+	/* set serial# and ethaddr if not yet defined */
+	if (getenv("serial#") == NULL) {
+		setenv ((char *)"serial#", (char *)serial);
+	}
+
+	if (getenv("ethaddr") == NULL) {
+		setenv ((char *)"ethaddr", (char *)ethaddr);
+	}
+}