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

[Tom Rini <trini@ti.com>]

On Tue, Jul 31, 2012 at 12:59:23PM -0600, mathieu.poirier at linaro.org wrote:

> From: "Mathieu J. Poirier" <mathieu.poirier@linaro.org>
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> Signed-off-by: John Rigby <john.rigby@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.

[snip]
> +++ b/drivers/gpio/db8500_gpio.c
[snip]
> +/*
> + * Macros to work with IO space
> + * Not actually used?
> + */
> +#define __iomem

<linux/compiler.h> provides this for us, please use that instead.

-- 
Tom