From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gerlando Falauto <gerlando.falauto@keymile.com>
Date: Fri, 29 Jun 2012 12:02:22 +0200
Subject: [U-Boot] [PATCH 1/2] KW: Move the memory register definitions
	into kirkwood.h
In-Reply-To: <1340736582-19815-1-git-send-email-marex@denx.de>
References: <1340736582-19815-1-git-send-email-marex@denx.de>
Message-ID: <4FED7D2E.4020508@keymile.com>
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To: u-boot@lists.denx.de

Dear Maruk,

I am currently trying to address the exact same issue (SDRAM size 
detection and fixup).
My idea was however (as opposed to moving register definition as you 
did), to add a fixup function to dram.c, say:

/*
  * kw_sdram_bs - writes SDRAM Bank size
  */
void kw_sdram_bs_set(enum memory_bank bank, u32 size)
{
	/* Read current register value */
	u32 reg = readl(KW_REG_CPUCS_WIN_SZ(bank));

	printf("Current value: %x\n", reg);
	/* Clear window size */
	reg &= ~KW_REG_CPUCS_WIN_SIZE(0xFF);

	/* Set new window size */
	reg |= KW_REG_CPUCS_WIN_SIZE((size - 1) >> 24);
	
	printf("Writing: %x\n", reg);
	writel(reg, KW_REG_CPUCS_WIN_SZ(bank));
}

which would then be called to fix the window size according to the total 
memory size as reported by get_ram_size().

What do you think?

Thank you,
Gerlando