[U-Boot] [PATCH v3] Consolidate bootcount code into drivers/bootcount

[Mike Frysinger]

On Tuesday 05 June 2012 02:37:55 Stefan Roese wrote:
> --- /dev/null
> +++ b/drivers/bootcount/Makefile
>
> +COBJS-$(CONFIG_BFIN_CPU)	+= bootcount_blackfin.o

needs to be CONFIG_BLACKFIN

> +all:	$(LIB)

unused rule -> delete

> --- /dev/null
> +++ b/include/bootcount.h
>
> +#ifdef CONFIG_SYS_BOOTCOUNT_LE
> +static inline void bc_out32(volatile u32 *addr, u32 data)

the bc_xxx names are a little confusing since they overlap so much with the 
existing io.h api.  how about "raw_bootcount_store" ?

> +{
> +	out_le32(addr, data);
> +}
> +
> +static inline u32 bc_in32(volatile u32 *addr)
> +{
> +	return in_le32(addr);
> +}
> +#else
> +static inline void bc_out32(volatile u32 *addr, u32 data)
> +{
> +	out_be32(addr, data);
> +}
> +
> +static inline u32 bc_in32(volatile u32 *addr)
> +{
> +	return in_be32(addr);
> +}
> +#endif

i'm not a big fan of defaulting to an endian regardless of the host.  in this 
case, it appears to benefit ppc only.

what about:
#include <asm/byteorder.h>
#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

or if you're not a fan of that, then:
#if defined(CONFIG_SYS_BOOTCOUNT_LE)
... current in_le logic ...
#elif defined(CONFIG_SYS_BOOTCOUNT_BE)
... current in_be logic ...
#else
# error "please select one of CONFIG_SYS_BOOTCOUNT_{L,B}E"
#endif

and then add a default to arch/powerpc/include/asm/config.h
-mike
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