[U-Boot] [PATCH 19/20] armv8/fsl-lsch3: Support 256M mem split for MC & dbg-srvr

[York Sun <yorksun@freescale.com>]

On 05/18/2015 12:16 AM, Prabhakar Kushwaha wrote:
> From: Stuart Yoder <stuart.yoder@freescale.com>
> 
> The agreed split of the top of memory is 256M for debug server and 256M
> for MC. This patch implements the split.
> 
> In addition, the MC mem must be 512MB aligned, so the amount of memory
> to hide must be 512MB to achieve that alignment.
> 
> Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
> ---

<snip>

> diff --git a/include/configs/ls2085a_common.h b/include/configs/ls2085a_common.h
> index a33b8a9..c895291 100644
> --- a/include/configs/ls2085a_common.h
> +++ b/include/configs/ls2085a_common.h
> @@ -163,21 +163,36 @@ unsigned long long get_qixis_addr(void);
>  #define CONFIG_SYS_NAND_BASE_PHYS		0x30000000
>  
>  /* Debug Server firmware */
> -#define CONFIG_SYS_DEBUG_SERVER_DRAM_BLOCK_MIN_SIZE	(512UL * 1024 * 1024)
>  /* 2 sec timeout */
>  #define CONFIG_SYS_DEBUG_SERVER_TIMEOUT			(2 * 1000 * 1000)
>  
>  /* MC firmware */
>  #define CONFIG_FSL_MC_ENET
> -#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE	(512UL * 1024 * 1024)
>  /* TODO Actual DPL max length needs to be confirmed with the MC FW team */
>  #define CONFIG_SYS_LS_MC_DPC_MAX_LENGTH	    0x20000
>  #define CONFIG_SYS_LS_MC_DRAM_DPC_OFFSET    0x00F00000
>  #define CONFIG_SYS_LS_MC_DPL_MAX_LENGTH	    0x20000
>  #define CONFIG_SYS_LS_MC_DRAM_DPL_OFFSET    0x00F20000
>  
> -/* Carve out a DDR region which will not be used by u-boot/Linux */
> +/*
> + * Carve out a DDR region which will not be used by u-boot/Linux
> + *
> + * The default end-of-memory partitioning looks like this:
> + *
> + *   +---------------+ <-- top/end of memory
> + *   |    256MB      |  debug server
> + *   +---------------+
> + *   |    256MB      |  MC
> + *   +---------------+
> + *   |     ...       |
> + *

I suggest to put this into a README file, together with the hiding memory mechanism.

York