José Miguel Gonçalves wrote:
>
> While upgrading the kernel on a S3C2412 based board I've noted that it was
> impossible to boot the board with a 2.6.32 or upper kernel.
> I've tracked down the problem to the EBI virtual memory mapping that is in
> conflict with the IO mapping definition in arch/arm/mach-s3c24xx/s3c2412.c.
>
> Signed-off-by: José Miguel Gonçalves <jose.goncalves@xxxxxxx>
> ---
> arch/arm/plat-samsung/include/plat/map-s3c.h | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/plat-samsung/include/plat/map-s3c.h b/arch/arm/plat-
> samsung/include/plat/map-s3c.h
> index 7d04875..c0c70a8 100644
> --- a/arch/arm/plat-samsung/include/plat/map-s3c.h
> +++ b/arch/arm/plat-samsung/include/plat/map-s3c.h
> @@ -22,7 +22,7 @@
> #define S3C24XX_VA_WATCHDOG S3C_VA_WATCHDOG
>
> #define S3C2412_VA_SSMC S3C_ADDR_CPU(0x00000000)
> -#define S3C2412_VA_EBI S3C_ADDR_CPU(0x00010000)
> +#define S3C2412_VA_EBI S3C_ADDR_CPU(0x00100000)
>
> #define S3C2410_PA_UART (0x50000000)
> #define S3C24XX_PA_UART S3C2410_PA_UART
> --
> 1.7.5.4
Yeah, as you said, the mapping for SSMC invade EBI area but I think, just SZ_4K is enough for SSMC. So following is better in this case. How do you think? And there is no problem on your board?
diff --git a/arch/arm/mach-s3c24xx/s3c2412.c b/arch/arm/mach-s3c24xx/s3c2412.c
index d4bc7f9..ac906bf 100644
--- a/arch/arm/mach-s3c24xx/s3c2412.c
+++ b/arch/arm/mach-s3c24xx/s3c2412.c
@@ -72,7 +72,7 @@ static struct map_desc s3c2412_iodesc[] __initdata = {
{
.virtual = (unsigned long)S3C2412_VA_SSMC,
.pfn = __phys_to_pfn(S3C2412_PA_SSMC),
- .length = SZ_1M,
+ .length = SZ_4K,
.type = MT_DEVICE,
},
{
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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