+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2012
* Stefan Roese, DENX Software Engineering, sr@denx.de.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
+#ifndef _BOOTCOUNT_H__
+#define _BOOTCOUNT_H__
#include <common.h>
#include <asm/io.h>
#include <asm/byteorder.h>
+#ifdef CONFIG_DM_BOOTCOUNT
+
+struct bootcount_ops {
+ /**
+ * get() - get the current bootcount value
+ *
+ * Returns the current counter value of the bootcount backing
+ * store.
+ *
+ * @dev: Device to read from
+ * @bootcount: Address to put the current bootcount value
+ */
+ int (*get)(struct udevice *dev, u32 *bootcount);
+
+ /**
+ * set() - set a bootcount value (e.g. to reset or increment)
+ *
+ * Sets the value in the bootcount backing store.
+ *
+ * @dev: Device to read from
+ * @bootcount: New bootcount value to store
+ */
+ int (*set)(struct udevice *dev, const u32 bootcount);
+};
+
+/* Access the operations for a bootcount device */
+#define bootcount_get_ops(dev) ((struct bootcount_ops *)(dev)->driver->ops)
+
+/**
+ * dm_bootcount_get() - Read the current value from a bootcount storage
+ *
+ * @dev: Device to read from
+ * @bootcount: Place to put the current bootcount
+ * @return 0 if OK, -ve on error
+ */
+int dm_bootcount_get(struct udevice *dev, u32 *bootcount);
+
+/**
+ * dm_bootcount_set() - Write a value to a bootcount storage
+ *
+ * @dev: Device to read from
+ * @bootcount: Value to be written to the backing storage
+ * @return 0 if OK, -ve on error
+ */
+int dm_bootcount_set(struct udevice *dev, u32 bootcount);
+
+#endif
+
+#if defined(CONFIG_SPL_BOOTCOUNT_LIMIT) || defined(CONFIG_BOOTCOUNT_LIMIT)
+
#if !defined(CONFIG_SYS_BOOTCOUNT_LE) && !defined(CONFIG_SYS_BOOTCOUNT_BE)
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define CONFIG_SYS_BOOTCOUNT_LE
return in_be32(addr);
}
#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+static inline int bootcount_error(void)
+{
+ unsigned long bootcount = bootcount_load();
+ unsigned long bootlimit = env_get_ulong("bootlimit", 10, 0);
+
+ if (bootlimit && bootcount > bootlimit) {
+ printf("Warning: Bootlimit (%lu) exceeded.", bootlimit);
+ if (!(gd->flags & GD_FLG_SPL_INIT))
+ printf(" Using altbootcmd.");
+ printf("\n");
+
+ return 1;
+ }
+
+ return 0;
+}
+
+static inline void bootcount_inc(void)
+{
+ unsigned long bootcount = bootcount_load();
+
+ if (gd->flags & GD_FLG_SPL_INIT) {
+ bootcount_store(++bootcount);
+ return;
+ }
+
+#ifndef CONFIG_SPL_BUILD
+ /* Only increment bootcount when no bootcount support in SPL */
+#ifndef CONFIG_SPL_BOOTCOUNT_LIMIT
+ bootcount_store(++bootcount);
+#endif
+ env_set_ulong("bootcount", bootcount);
+#endif /* !CONFIG_SPL_BUILD */
+}
+
+#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_SPL_BOOTCOUNT_LIMIT)
+void bootcount_store(ulong a) {};
+ulong bootcount_load(void) { return 0; }
+#endif /* CONFIG_SPL_BUILD && !CONFIG_SPL_BOOTCOUNT_LIMIT */
+#else
+static inline int bootcount_error(void) { return 0; }
+static inline void bootcount_inc(void) {}
+#endif /* CONFIG_SPL_BOOTCOUNT_LIMIT || CONFIG_BOOTCOUNT_LIMIT */
+#endif /* _BOOTCOUNT_H__ */