GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/env/remote.c

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
+ */
+
+/* #define DEBUG */
+
+#include <common.h>
+#include <command.h>
+#include <env_internal.h>
+#include <linux/stddef.h>
+#include <u-boot/crc.h>
+
+#ifdef ENV_IS_EMBEDDED
+env_t *env_ptr = &environment;
+#else /* ! ENV_IS_EMBEDDED */
+env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
+#endif /* ENV_IS_EMBEDDED */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int env_remote_init(void)
+{
+	if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
+		gd->env_addr = (ulong)&(env_ptr->data);
+		gd->env_valid = ENV_VALID;
+		return 0;
+	}
+
+	return -ENOENT;
+}
+
+#ifdef CONFIG_CMD_SAVEENV
+static int env_remote_save(void)
+{
+#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
+	printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
+	return 1;
+#else
+	return 0;
+#endif
+}
+#endif /* CONFIG_CMD_SAVEENV */
+
+static int env_remote_load(void)
+{
+#ifndef ENV_IS_EMBEDDED
+	return env_import((char *)env_ptr, 1);
+#endif
+
+	return 0;
+}
+
+U_BOOT_ENV_LOCATION(remote) = {
+	.location	= ENVL_REMOTE,
+	ENV_NAME("Remote")
+	.load		= env_remote_load,
+	.save		= env_save_ptr(env_remote_save),
+	.init		= env_remote_init,
+};