[U-Boot] [PATCH v3] mx6: Enable L2 cache support

[Stefano Babic]

On 28/01/2014 15:54, Fabio Estevam wrote:
> Add L2 cache support and enable it by default.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---
> Changes since v2:
> - Add L2_PL310_BASE definition in imx_regs.h
> Changes since v1:
> - Fx typo in commit log
> 
>  arch/arm/cpu/armv7/mx6/soc.c             | 20 ++++++++++++++++++++
>  arch/arm/include/asm/arch-mx6/imx-regs.h |  1 +
>  include/configs/mx6_common.h             |  5 +++++
>  3 files changed, 26 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
> index 0208cba..b84de87 100644
> --- a/arch/arm/cpu/armv7/mx6/soc.c
> +++ b/arch/arm/cpu/armv7/mx6/soc.c
> @@ -8,6 +8,8 @@
>   */
>  
>  #include <common.h>
> +#include <asm/armv7.h>
> +#include <asm/pl310.h>
>  #include <asm/errno.h>
>  #include <asm/io.h>
>  #include <asm/arch/imx-regs.h>
> @@ -336,3 +338,21 @@ void imx_setup_hdmi(void)
>  	writel(reg, &mxc_ccm->chsccdr);
>  }
>  #endif
> +
> +#ifndef CONFIG_SYS_L2CACHE_OFF
> +#define L2CACHE		1
> +void v7_outer_cache_enable(void)
> +{
> +	struct pl310_regs *const pl310 = (struct pl310_regs *)L2_PL310_BASE;
> +
> +	setbits_le32(&pl310->pl310_ctrl, L2CACHE);
> +
> +}
> +
> +void v7_outer_cache_disable(void)
> +{
> +	struct pl310_regs *const pl310 = (struct pl310_regs *)L2_PL310_BASE;
> +
> +	clrbits_le32(&pl310->pl310_ctrl, L2CACHE);
> +}
> +#endif /* !CONFIG_SYS_L2CACHE_OFF */
> diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h
> index f2ad6e9..c2d210a 100644
> --- a/arch/arm/include/asm/arch-mx6/imx-regs.h
> +++ b/arch/arm/include/asm/arch-mx6/imx-regs.h
> @@ -53,6 +53,7 @@
>  #define GLOBAL_TIMER_BASE_ADDR          0x00A00200
>  #define PRIVATE_TIMERS_WD_BASE_ADDR     0x00A00600
>  #define IC_DISTRIBUTOR_BASE_ADDR        0x00A01000
> +#define L2_PL310_BASE			0x00A02000
>  #define GPV0_BASE_ADDR                  0x00B00000
>  #define GPV1_BASE_ADDR                  0x00C00000
>  #define PCIE_ARB_BASE_ADDR              0x01000000
> diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h
> index 514d634..63afa46 100644
> --- a/include/configs/mx6_common.h
> +++ b/include/configs/mx6_common.h
> @@ -22,4 +22,9 @@
>  #define CONFIG_ARM_ERRATA_751472
>  #define CONFIG_BOARD_POSTCLK_INIT
>  
> +#ifndef CONFIG_SYS_L2CACHE_OFF
> +#define CONFIG_SYS_L2_PL310
> +#define CONFIG_SYS_PL310_BASE	L2_PL310_BASE
> +#endif
> +
>  #endif
> 

Acked-by: Stefano Babic <sbabic at denx.de>

Best regards,
Stefano Babic

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