[U-Boot] [PATCH 01/11] snowball: Add support for ux500 based snowball board

[Tom Rini]

On 08/03/2012 12:32 PM, Mathieu Poirier wrote:
> Thanks for the review - see my comments below.
> 
> Mathieu.
> 
> On 12-08-03 08:46 AM, Tom Rini wrote:
>> On Tue, Jul 31, 2012 at 12:59:23PM -0600, mathieu.poirier at linaro.org wrote:
>>
>>> From: "Mathieu J. Poirier" <mathieu.poirier at linaro.org>
>>>
>>> Signed-off-by: Mathieu Poirier <mathieu.poirier at linaro.org>
>>> Signed-off-by: John Rigby <john.rigby at linaro.org>
>> [snip]
>>> +++ b/board/st-ericsson/snowball/Makefile
>> [snip]
>>> +#prcmu.o
>>
>> Drop please.
>>
>> [snip]
>>> +++ b/board/st-ericsson/snowball/snowball.c
>>> +int dram_init(void)
>>> +{
>>> +	uint32_t unused_cols_rows;
>>> +	unsigned int nrows;
>>> +	unsigned int ncols;
>>> +
>>> +	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
>>> +	gd->ram_size = PHYS_SDRAM_SIZE_1;
>>> +
>>> +	/*
>>> +	 * Assumption: 2 CS active, both CS have same layout.
>>> +	 *             15 rows max, 11 cols max (controller spec).
>>> +	 *             memory chip has 8 banks, I/O width 32 bit.
>>> +	 * The correct way would be to read MR#8: I/O width and density,
>>> +	 * but this requires locking against the PRCMU firmware.
>>> +	 * Simplified approach:
>>> +	 * Read number of unused rows and columns from mem controller.
>>> +	 * size = nCS x 2^(rows+cols) x nbanks x buswidth_bytes
>>> +	 */
>>> +	unused_cols_rows = readl(DMC_CTL_97);
>>> +	nrows = 15 - (unused_cols_rows & 0x07);
>>> +	ncols = 11 - ((unused_cols_rows & 0x0700) >> 8);
>>> +	gd->ram_size = gd->bd->bi_dram[0].size =
>>> +					2 * (1 << (nrows + ncols)) * 8 * 4;
>>
>> Please use get_mem_size(CONFIG_SYS_SDRAM_BASE, possible-max-size) (and
>> defining CONFIG_SYS_MAX_RAM_SIZE is common convention) instead of all
>> the above.
>>
> 
> Is 'get_mem_size' supposed to be an existing API ?  I grep'ed for it in
> the code to no avail.

Arg, sorry, mental error.  get_ram_size is the right one.

-- 
Tom