mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 10:43:06 +00:00
185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2012
|
|
* Stefan Roese, DENX Software Engineering, sr@denx.de.
|
|
*/
|
|
#ifndef _BOOTCOUNT_H__
|
|
#define _BOOTCOUNT_H__
|
|
|
|
#include <common.h>
|
|
#include <asm/global_data.h>
|
|
#include <asm/io.h>
|
|
#include <asm/byteorder.h>
|
|
#include <env.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
|
|
|
|
/** bootcount_store() - store the current bootcount */
|
|
void bootcount_store(ulong);
|
|
|
|
/**
|
|
* bootcount_load() - load the current bootcount
|
|
*
|
|
* Return: bootcount, read from the appropriate location
|
|
*/
|
|
ulong bootcount_load(void);
|
|
|
|
#if defined(CONFIG_SPL_BOOTCOUNT_LIMIT) || defined(CONFIG_TPL_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
|
|
# else
|
|
# define CONFIG_SYS_BOOTCOUNT_BE
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef CONFIG_SYS_BOOTCOUNT_LE
|
|
static inline void raw_bootcount_store(volatile u32 *addr, u32 data)
|
|
{
|
|
out_le32(addr, data);
|
|
}
|
|
|
|
static inline u32 raw_bootcount_load(volatile u32 *addr)
|
|
{
|
|
return in_le32(addr);
|
|
}
|
|
#else
|
|
static inline void raw_bootcount_store(volatile u32 *addr, u32 data)
|
|
{
|
|
out_be32(addr, data);
|
|
}
|
|
|
|
static inline u32 raw_bootcount_load(volatile u32 *addr)
|
|
{
|
|
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 */
|
|
#if !defined(CONFIG_SPL_BOOTCOUNT_LIMIT) && !defined(CONFIG_TPL_BOOTCOUNT_LIMIT)
|
|
bootcount_store(++bootcount);
|
|
#endif
|
|
env_set_ulong("bootcount", bootcount);
|
|
#endif /* !CONFIG_SPL_BUILD */
|
|
}
|
|
|
|
#else
|
|
static inline int bootcount_error(void) { return 0; }
|
|
static inline void bootcount_inc(void) {}
|
|
#endif /* CONFIG_SPL_BOOTCOUNT_LIMIT || CONFIG_TPL_BOOTCOUNT_LIMIT || CONFIG_BOOTCOUNT_LIMIT */
|
|
#endif /* _BOOTCOUNT_H__ */
|