[U-Boot] [PATCH v6 3/4] mx28: Let dram_init be common for mx28

[Marek Vasut <marek.vasut@gmail.com>]

> Let dram_init function be a common function, so that other mx28 boards
> can reuse it.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
> Changes since v5:
> - Change return value on dram_init()
> Changes since v4:
> - Call mx28_dram_init from m28evk.c
> Changes since v3:
> - Rename dram_init to mx28_dram_init
>  arch/arm/cpu/arm926ejs/mx28/mx28.c         |   21 +++++++++++++++++++++
>  arch/arm/include/asm/arch-mx28/sys_proto.h |    2 ++
>  board/denx/m28evk/m28evk.c                 |   18 +-----------------
>  3 files changed, 24 insertions(+), 17 deletions(-)
> 
> diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28.c
> b/arch/arm/cpu/arm926ejs/mx28/mx28.c index 79b4001..722efbf 100644
> --- a/arch/arm/cpu/arm926ejs/mx28/mx28.c
> +++ b/arch/arm/cpu/arm926ejs/mx28/mx28.c
> @@ -262,6 +262,27 @@ void mx28_get_mac_from_fuse(int dev_id, char *mac)
>  }
>  #endif
> 
> +#define	HW_DIGCTRL_SCRATCH0	0x8001c280
> +#define	HW_DIGCTRL_SCRATCH1	0x8001c290
> +int mx28_dram_init(void)
> +{
> +	uint32_t sz[2];
> +
> +	sz[0] = readl(HW_DIGCTRL_SCRATCH0);
> +	sz[1] = readl(HW_DIGCTRL_SCRATCH1);
> +
> +	if (sz[0] != sz[1]) {
> +		printf("MX28:\n"
> +			"Error, the RAM size in HW_DIGCTRL_SCRATCH0 and\n"
> +			"HW_DIGCTRL_SCRATCH1 is not the same. Please\n"
> +			"verify these two registers contain valid RAM size!\n");
> +		hang();
> +	}
> +
> +	gd->ram_size = sz[0];
> +	return 0;
> +}
> +
>  U_BOOT_CMD(
>  	clocks,	CONFIG_SYS_MAXARGS, 1, do_mx28_showclocks,
>  	"display clocks",
> diff --git a/arch/arm/include/asm/arch-mx28/sys_proto.h
> b/arch/arm/include/asm/arch-mx28/sys_proto.h index be1f7db..f101494 100644
> --- a/arch/arm/include/asm/arch-mx28/sys_proto.h
> +++ b/arch/arm/include/asm/arch-mx28/sys_proto.h
> @@ -35,4 +35,6 @@ void mx28_common_spl_init(const iomux_cfg_t *iomux_setup,
>  			const unsigned int iomux_size);
>  #endif
> 
> +int mx28_dram_init(void);
> +
>  #endif	/* __MX28_H__ */
> diff --git a/board/denx/m28evk/m28evk.c b/board/denx/m28evk/m28evk.c
> index 005446a..53df476 100644
> --- a/board/denx/m28evk/m28evk.c
> +++ b/board/denx/m28evk/m28evk.c
> @@ -70,25 +70,9 @@ int board_init(void)
>  	return 0;
>  }
> 
> -#define	HW_DIGCTRL_SCRATCH0	0x8001c280
> -#define	HW_DIGCTRL_SCRATCH1	0x8001c290
>  int dram_init(void)
>  {
> -	uint32_t sz[2];
> -
> -	sz[0] = readl(HW_DIGCTRL_SCRATCH0);
> -	sz[1] = readl(HW_DIGCTRL_SCRATCH1);
> -
> -	if (sz[0] != sz[1]) {
> -		printf("MX28:\n"
> -			"Error, the RAM size in HW_DIGCTRL_SCRATCH0 and\n"
> -			"HW_DIGCTRL_SCRATCH1 is not the same. Please\n"
> -			"verify these two registers contain valid RAM size!\n");
> -		hang();
> -	}
> -
> -	gd->ram_size = sz[0];
> -	return 0;
> +	return mx28_dram_init();
>  }
> 
>  #ifdef	CONFIG_CMD_MMC

Acked-by: Marek Vasut <marek.vasut@gmail.com>