diff mbox

[U-Boot,v2,03/18] bootm: Align cache flush end address correctly

Message ID 1462454902-6093-4-git-send-email-sjg@chromium.org
State Awaiting Upstream
Delegated to: Andreas Bießmann
Headers show

Commit Message

Simon Glass May 5, 2016, 1:28 p.m. UTC
Flushing part of the cache should be done on cache boundaries. Trying to
flush part of a cache line is not supported and the request may be ignored
or print warnings.

Adjust the bootm code to align the end address to prevent this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Tested-on: smartweb, corvus, taurus, axm
Tested-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
---

Changes in v2: None

 common/bootm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Andreas Bießmann May 5, 2016, 2:19 p.m. UTC | #1
On 05.05.16 15:28, Simon Glass wrote:
> Flushing part of the cache should be done on cache boundaries. Trying to
> flush part of a cache line is not supported and the request may be ignored
> or print warnings.
> 
> Adjust the bootm code to align the end address to prevent this problem.
> 
> Signed-off-by: Simon Glass <sjg@chromium.org>
> Reviewed-by: Heiko Schocher <hs@denx.de>
> Tested-on: smartweb, corvus, taurus, axm
> Tested-by: Heiko Schocher <hs@denx.de>
> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
> ---
> 
> Changes in v2: None
> 
>  common/bootm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/common/bootm.c b/common/bootm.c
> index c965326..7469c61 100644
> --- a/common/bootm.c
> +++ b/common/bootm.c
> @@ -435,7 +435,7 @@ static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
>  		bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
>  		return err;
>  	}
> -	flush_cache(load, *load_end - load);
> +	flush_cache(load, ALIGN(*load_end - load, ARCH_DMA_MINALIGN));
>  
>  	debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
>  	bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
> 

Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
Andreas Bießmann June 12, 2016, 10:01 p.m. UTC | #2
Dear Simon Glass,

Simon Glass <sjg@chromium.org> writes:
>Flushing part of the cache should be done on cache boundaries. Trying to
>flush part of a cache line is not supported and the request may be ignored
>or print warnings.
>
>Adjust the bootm code to align the end address to prevent this problem.
>
>Signed-off-by: Simon Glass <sjg@chromium.org>
>Reviewed-by: Heiko Schocher <hs@denx.de>
>Tested-on: smartweb, corvus, taurus, axm
>Tested-by: Heiko Schocher <hs@denx.de>
>Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
>Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
>---
>
>Changes in v2: None
>
> common/bootm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

applied to u-boot-atmel/master, thanks!

Best regards,
Andreas Bießmann
diff mbox

Patch

diff --git a/common/bootm.c b/common/bootm.c
index c965326..7469c61 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -435,7 +435,7 @@  static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 		bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 		return err;
 	}
-	flush_cache(load, *load_end - load);
+	flush_cache(load, ALIGN(*load_end - load, ARCH_DMA_MINALIGN));
 
 	debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 	bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);