[U-Boot] [PATCH 3/7] 86xx: Unlock l1 cache unconditionally

[Kumar Gala]

On May 22, 2009, at 10:26 AM, Peter Tyser wrote:

> Previously, it was only unlocked when Linux was executed using the
> "bootm" command.  Unlocking it unconditionally improves U-Boot
> performance and provides a common cache state when booting OSes.
>
> Signed-off-by: Peter Tyser <ptyser at xes-inc.com>
> ---
> lib_ppc/board.c |    8 +++++---
> lib_ppc/bootm.c |    3 ++-
> 2 files changed, 7 insertions(+), 4 deletions(-)

Wolfgang, do you know any reason we can't do the unlock for ALL ppc's  
in board_init_r()?

- k

>
>
> diff --git a/lib_ppc/board.c b/lib_ppc/board.c
> index a0e6b20..7c02540 100644
> --- a/lib_ppc/board.c
> +++ b/lib_ppc/board.c
> @@ -68,7 +68,8 @@
> #if defined(CONFIG_LOGBUFFER)
> #include <logbuff.h>
> #endif
> -#if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
> +#if defined(CONFIG_SYS_INIT_RAM_LOCK) && \
> +	(defined(CONFIG_E500) || defined(CONFIG_MPC86xx))
> #include <asm/cache.h>
> #endif
> #ifdef CONFIG_PS2KBD
> @@ -754,8 +755,9 @@ void board_init_r (gd_t *id, ulong dest_addr)
> 	icache_enable ();	/* it's time to enable the instruction cache */
> #endif
>
> -#if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
> -	unlock_ram_in_cache();	/* it's time to unlock D-cache in e500 */
> +#if defined(CONFIG_SYS_INIT_RAM_LOCK) && \
> +	(defined(CONFIG_E500) || defined(CONFIG_MPC86xx))
> +	unlock_ram_in_cache();	/* it's time to unlock D-cache */
> #endif
>
> #if defined(CONFIG_BAB7xx) || defined(CONFIG_CPC45)
> diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c
> index 0d702bf..d1cf94e 100644
> --- a/lib_ppc/bootm.c
> +++ b/lib_ppc/bootm.c
> @@ -71,7 +71,8 @@ static void boot_jump_linux(bootm_headers_t *images)
>
> 	show_boot_progress (15);
>
> -#if defined(CONFIG_SYS_INIT_RAM_LOCK) && !defined(CONFIG_E500)
> +#if defined(CONFIG_SYS_INIT_RAM_LOCK) && \
> +	!defined(CONFIG_E500) && !defined(CONFIG_MPC86xx)
> 	unlock_ram_in_cache();
> #endif
>
> -- 
> 1.6.2.1
>
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