115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <mach/imx-regs.h>
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#include <io.h>
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#if defined(CONFIG_ARCH_IMX35) || defined (CONFIG_ARCH_IMX25)
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#define RCSR_NFC_FMS (1 << 8)
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#define RCSR_NFC_4K (1 << 9)
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#define RCSR_NFC_16BIT_SEL (1 << 14)
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void imx_nand_set_layout(int writesize, int datawidth)
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{
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unsigned int rcsr;
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rcsr = readl(IMX_CCM_BASE + CCM_RCSR);
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switch (writesize) {
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case 512:
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rcsr &= ~(RCSR_NFC_FMS | RCSR_NFC_4K);
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break;
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case 2048:
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rcsr |= RCSR_NFC_FMS;
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break;
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case 4096:
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rcsr |= RCSR_NFC_FMS | RCSR_NFC_4K;
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break;
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default:
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break;
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}
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switch (datawidth) {
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case 8:
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rcsr &= ~RCSR_NFC_16BIT_SEL;
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break;
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case 16:
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rcsr |= RCSR_NFC_16BIT_SEL;
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break;
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default:
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break;
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}
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writel(rcsr, IMX_CCM_BASE + CCM_RCSR);
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}
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#elif defined(CONFIG_ARCH_IMX21) || defined (CONFIG_ARCH_IMX27)
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#define FMCR_NF_FMS (1 << 5)
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#define FMCR_NF_16BIT_SEL (1 << 4)
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void imx_nand_set_layout(int writesize, int datawidth)
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{
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unsigned int fmcr;
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fmcr = FMCR;
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switch (writesize) {
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case 512:
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fmcr &= ~FMCR_NF_FMS;
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break;
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case 2048:
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fmcr |= FMCR_NF_FMS;
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break;
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default:
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break;
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}
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switch (datawidth) {
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case 8:
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fmcr &= ~FMCR_NF_16BIT_SEL;
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break;
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case 16:
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fmcr |= FMCR_NF_16BIT_SEL;
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break;
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default:
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break;
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}
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FMCR = fmcr;
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}
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#elif defined CONFIG_ARCH_IMX51 || defined CONFIG_ARCH_IMX53
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void imx_nand_set_layout(int writesize, int datawidth)
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{
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/* Just silence the compiler warning below. On i.MX51 we don't
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* have external boot.
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*/
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}
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#else
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#warning using empty imx_nand_set_layout(). NAND flash will not work properly if not booting from it
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void imx_nand_set_layout(int writesize, int datawidth)
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{
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}
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#endif
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