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/include/env_flags.h

@@ -0,0 +1,178 @@
+/*
+ * (C) Copyright 2012
+ * Joe Hershberger, National Instruments, joe.hershberger@ni.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ENV_FLAGS_H__
+#define __ENV_FLAGS_H__
+
+enum env_flags_vartype {
+	env_flags_vartype_string,
+	env_flags_vartype_decimal,
+	env_flags_vartype_hex,
+	env_flags_vartype_bool,
+#ifdef CONFIG_CMD_NET
+	env_flags_vartype_ipaddr,
+	env_flags_vartype_macaddr,
+#endif
+	env_flags_vartype_end
+};
+
+enum env_flags_varaccess {
+	env_flags_varaccess_any,
+	env_flags_varaccess_readonly,
+	env_flags_varaccess_writeonce,
+	env_flags_varaccess_changedefault,
+	env_flags_varaccess_end
+};
+
+#define ENV_FLAGS_VAR ".flags"
+#define ENV_FLAGS_ATTR_MAX_LEN 2
+#define ENV_FLAGS_VARTYPE_LOC 0
+#define ENV_FLAGS_VARACCESS_LOC 1
+
+#ifndef CONFIG_ENV_FLAGS_LIST_STATIC
+#define CONFIG_ENV_FLAGS_LIST_STATIC ""
+#endif
+
+#ifdef CONFIG_CMD_NET
+#ifdef CONFIG_REGEX
+#define ETHADDR_WILDCARD "\\d?"
+#else
+#define ETHADDR_WILDCARD
+#endif
+#ifdef CONFIG_ENV_OVERWRITE
+#define ETHADDR_FLAGS "eth" ETHADDR_WILDCARD "addr:ma,"
+#else
+#ifdef CONFIG_OVERWRITE_ETHADDR_ONCE
+#define ETHADDR_FLAGS "eth" ETHADDR_WILDCARD "addr:mc,"
+#else
+#define ETHADDR_FLAGS "eth" ETHADDR_WILDCARD "addr:mo,"
+#endif
+#endif
+#define NET_FLAGS \
+	"ipaddr:i," \
+	"gatewayip:i," \
+	"netmask:i," \
+	"serverip:i," \
+	"nvlan:d," \
+	"vlan:d," \
+	"dnsip:i,"
+#else
+#define ETHADDR_FLAGS
+#define NET_FLAGS
+#endif
+
+#ifndef CONFIG_ENV_OVERWRITE
+#define SERIAL_FLAGS "serial#:so,"
+#else
+#define SERIAL_FLAGS ""
+#endif
+
+#define ENV_FLAGS_LIST_STATIC \
+	ETHADDR_FLAGS \
+	NET_FLAGS \
+	SERIAL_FLAGS \
+	CONFIG_ENV_FLAGS_LIST_STATIC
+
+#ifdef CONFIG_CMD_ENV_FLAGS
+/*
+ * Print the whole list of available type flags.
+ */
+void env_flags_print_vartypes(void);
+/*
+ * Print the whole list of available access flags.
+ */
+void env_flags_print_varaccess(void);
+/*
+ * Return the name of the type.
+ */
+const char *env_flags_get_vartype_name(enum env_flags_vartype type);
+/*
+ * Return the name of the access.
+ */
+const char *env_flags_get_varaccess_name(enum env_flags_varaccess access);
+#endif
+
+/*
+ * Parse the flags string from a .flags attribute list into the vartype enum.
+ */
+enum env_flags_vartype env_flags_parse_vartype(const char *flags);
+/*
+ * Parse the flags string from a .flags attribute list into the varaccess enum.
+ */
+enum env_flags_varaccess env_flags_parse_varaccess(const char *flags);
+/*
+ * Parse the binary flags from a hash table entry into the varaccess enum.
+ */
+enum env_flags_varaccess env_flags_parse_varaccess_from_binflags(int binflags);
+
+#ifdef CONFIG_CMD_NET
+/*
+ * Check if a string has the format of an Ethernet MAC address
+ */
+int eth_validate_ethaddr_str(const char *addr);
+#endif
+
+#ifdef USE_HOSTCC
+/*
+ * Look up the type of a variable directly from the .flags var.
+ */
+enum env_flags_vartype env_flags_get_type(const char *name);
+/*
+ * Look up the access of a variable directly from the .flags var.
+ */
+enum env_flags_varaccess env_flags_get_access(const char *name);
+/*
+ * Validate the newval for its type to conform with the requirements defined by
+ * its flags (directly looked at the .flags var).
+ */
+int env_flags_validate_type(const char *name, const char *newval);
+/*
+ * Validate the newval for its access to conform with the requirements defined
+ * by its flags (directly looked at the .flags var).
+ */
+int env_flags_validate_access(const char *name, int check_mask);
+/*
+ * Validate that the proposed access to variable "name" is valid according to
+ * the defined flags for that variable, if any.
+ */
+int env_flags_validate_varaccess(const char *name, int check_mask);
+/*
+ * Validate the parameters passed to "env set" for type compliance
+ */
+int env_flags_validate_env_set_params(char *name, char *const val[], int count);
+
+#else /* !USE_HOSTCC */
+
+#include <search.h>
+
+/*
+ * When adding a variable to the environment, initialize the flags for that
+ * variable.
+ */
+void env_flags_init(ENTRY *var_entry);
+
+/*
+ * Validate the newval for to conform with the requirements defined by its flags
+ */
+int env_flags_validate(const ENTRY *item, const char *newval, enum env_op op,
+	int flag);
+
+#endif /* USE_HOSTCC */
+
+/*
+ * These are the binary flags used in the environment entry->flags variable to
+ * decribe properties of veriables in the table
+ */
+#define ENV_FLAGS_VARTYPE_BIN_MASK			0x00000007
+/* The actual variable type values use the enum value (within the mask) */
+#define ENV_FLAGS_VARACCESS_PREVENT_DELETE		0x00000008
+#define ENV_FLAGS_VARACCESS_PREVENT_CREATE		0x00000010
+#define ENV_FLAGS_VARACCESS_PREVENT_OVERWR		0x00000020
+#define ENV_FLAGS_VARACCESS_PREVENT_NONDEF_OVERWR	0x00000040
+#define ENV_FLAGS_VARACCESS_BIN_MASK			0x00000078
+
+#endif /* __ENV_FLAGS_H__ */