[U-Boot] [PATCH 1/2] Change DDR tlb start entry to CONFIG param for85xx

[Liu Dave]

> +#ifndef CONFIG_SYS_DDR_TLB_START
> +#define CONFIG_SYS_DDR_TLB_START 8
> +#endif
> +
>  unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg)
>  {
>  	unsigned int tlb_size;
> @@ -137,7 +141,7 @@ unsigned int setup_ddr_tlbs(unsigned int 
> memsize_in_meg)
>  	 * Configure DDR TLB1 entries.
>  	 * Starting at TLB1 8, use no more than 8 TLB1 entries.
>  	 */
> -	ram_tlb_index = 8;
> +	ram_tlb_index = CONFIG_SYS_DDR_TLB_START;
>  	ram_tlb_address = (unsigned int)CONFIG_SYS_DDR_SDRAM_BASE;
>  	while (ram_tlb_address < (memsize_in_meg * 1024 * 1024)
>  	      && ram_tlb_index < 16) {

Kumar,

is it possible to change TLB alloc way?
current u-boot TLB is easy to conflict/confus to users.
there are two limitations
1) the magic number 8 for DDR
2) the TLB14/TLB15 never can be used to board code.

These are TLBs that board code can use just like
0,1....7,skip DDR(8....), skip 14 and 15.

Basically it is limited to 0-7.