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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <mach/imx-regs.h>
#include <io.h>
#if defined(CONFIG_ARCH_IMX35) || defined (CONFIG_ARCH_IMX25)
#define RCSR_NFC_FMS (1 << 8)
#define RCSR_NFC_4K (1 << 9)
#define RCSR_NFC_16BIT_SEL (1 << 14)
void imx_nand_set_layout(int writesize, int datawidth)
{
unsigned int rcsr;
rcsr = readl(IMX_CCM_BASE + CCM_RCSR);
switch (writesize) {
case 512:
rcsr &= ~(RCSR_NFC_FMS | RCSR_NFC_4K);
break;
case 2048:
rcsr |= RCSR_NFC_FMS;
break;
case 4096:
rcsr |= RCSR_NFC_FMS | RCSR_NFC_4K;
break;
default:
break;
}
switch (datawidth) {
case 8:
rcsr &= ~RCSR_NFC_16BIT_SEL;
break;
case 16:
rcsr |= RCSR_NFC_16BIT_SEL;
break;
default:
break;
}
writel(rcsr, IMX_CCM_BASE + CCM_RCSR);
}
#elif defined(CONFIG_ARCH_IMX21) || defined (CONFIG_ARCH_IMX27)
#define FMCR_NF_FMS (1 << 5)
#define FMCR_NF_16BIT_SEL (1 << 4)
void imx_nand_set_layout(int writesize, int datawidth)
{
unsigned int fmcr;
fmcr = FMCR;
switch (writesize) {
case 512:
fmcr &= ~FMCR_NF_FMS;
break;
case 2048:
fmcr |= FMCR_NF_FMS;
break;
default:
break;
}
switch (datawidth) {
case 8:
fmcr &= ~FMCR_NF_16BIT_SEL;
break;
case 16:
fmcr |= FMCR_NF_16BIT_SEL;
break;
default:
break;
}
FMCR = fmcr;
}
#elif defined CONFIG_ARCH_IMX51 || defined CONFIG_ARCH_IMX53
void imx_nand_set_layout(int writesize, int datawidth)
{
/* Just silence the compiler warning below. On i.MX51 we don't
* have external boot.
*/
}
#else
#warning using empty imx_nand_set_layout(). NAND flash will not work properly if not booting from it
void imx_nand_set_layout(int writesize, int datawidth)
{
}
#endif
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