Marubun pcmcia is a chip for PCMCIA used with SuperH. Of course, this can be used even by other architectures. When use this driver, came to be able to use CompactFlash and Ethernet. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>master
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U-Boot MARUBUN MR-SHPC-01 PCMCIA controller driver |
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Last update 21/11/2007 by Nobuhiro Iwamatsu |
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======================================================================================== |
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0. What's this? |
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This driver supports MARUBUN MR-SHPC-01. |
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url: http://www.marubun.co.jp/product/semicon/devices/qgc18e0000002n2z.html |
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(Sorry Japanese only.) |
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This chip is used with SuperH well, and adopted by the |
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reference board. |
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ex. * MS7750SE01 |
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* MS7722SE01 |
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* other |
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This chip doesn't support CardBus. |
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1. base source code |
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The code is based on sources from the Linux kernel |
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( arch/sh/kernel/cf-enabler.c ). |
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2. How to use |
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The options you have to specify in the config file are (with the |
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value for my board as an example): |
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* CONFIG_MARUBUN_PCCARD |
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If you want to use this device driver, should define CONFIG_MARUBUN_PCCARD. |
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ex. #define CONFIG_MARUBUN_PCCARD |
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* CONFIG_PCMCIA_SLOT_A |
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Most devices have only one slot. You should define CONFIG_PCMCIA_SLOT_A . |
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ex. #define CONFIG_PCMCIA_SLOT_A 1 |
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* CFG_MARUBUN_MRSHPC |
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This is MR-SHPC-01 PCMCIA controler base address. |
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You should do the setting matched to your environment. |
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ex. #define CFG_MARUBUN_MRSHPC 0xb03fffe0 |
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( for MS7722SE01 environment ) |
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* CFG_MARUBUN_MW1 |
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This is MR-SHPC-01 memory window base address. |
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You should do the setting matched to your environment. |
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ex. #define CFG_MARUBUN_MW1 0xb0400000 |
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( for MS7722SE01 environment ) |
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* CFG_MARUBUN_MW1 |
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This is MR-SHPC-01 attribute window base address. |
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You should do the setting matched to your environment. |
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ex. #define CFG_MARUBUN_MW2 0xb0500000 |
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( for MS7722SE01 environment ) |
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* CFG_MARUBUN_MW1 |
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This is MR-SHPC-01 I/O window base address. |
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You should do the setting matched to your environment. |
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ex. #define CFG_MARUBUN_IO 0xb0600000 |
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( for MS7722SE01 environment ) |
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3. Other |
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* Check Compact Flash only. |
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* Maybe, NE2000 compatible NIC is sure to move. |
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Copyright (c) 2007 |
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Nobuhiro Iwamatsu <iwamatsu@nigaur.org> |
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/*
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* Marubun MR-SHPC-01 PCMCIA controller device driver |
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* |
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* (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> |
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* |
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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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*/
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#include <common.h> |
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#include <config.h> |
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#include <pcmcia.h> |
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#include <asm/io.h> |
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#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) |
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#define CONFIG_PCMCIA |
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#endif |
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#if (CONFIG_COMMANDS & CFG_CMD_IDE) |
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#define CONFIG_PCMCIA |
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#endif |
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#if defined(CONFIG_PCMCIA) \ |
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&& (defined(CONFIG_MARUBUN_PCCARD))
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/* MR-SHPC-01 register */ |
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#define MRSHPC_MODE (CFG_MARUBUN_MRSHPC + 4) |
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#define MRSHPC_OPTION (CFG_MARUBUN_MRSHPC + 6) |
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#define MRSHPC_CSR (CFG_MARUBUN_MRSHPC + 8) |
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#define MRSHPC_ISR (CFG_MARUBUN_MRSHPC + 10) |
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#define MRSHPC_ICR (CFG_MARUBUN_MRSHPC + 12) |
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#define MRSHPC_CPWCR (CFG_MARUBUN_MRSHPC + 14) |
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#define MRSHPC_MW0CR1 (CFG_MARUBUN_MRSHPC + 16) |
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#define MRSHPC_MW1CR1 (CFG_MARUBUN_MRSHPC + 18) |
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#define MRSHPC_IOWCR1 (CFG_MARUBUN_MRSHPC + 20) |
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#define MRSHPC_MW0CR2 (CFG_MARUBUN_MRSHPC + 22) |
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#define MRSHPC_MW1CR2 (CFG_MARUBUN_MRSHPC + 24) |
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#define MRSHPC_IOWCR2 (CFG_MARUBUN_MRSHPC + 26) |
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#define MRSHPC_CDCR (CFG_MARUBUN_MRSHPC + 28) |
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#define MRSHPC_PCIC_INFO (CFG_MARUBUN_MRSHPC + 30) |
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int pcmcia_on (void) |
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{ |
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printf("Enable PCMCIA " PCMCIA_SLOT_MSG "\n"); |
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/* Init */ |
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outw( 0x0000 , MRSHPC_MODE ); |
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if ((inw(MRSHPC_CSR) & 0x000c) == 0){ /* if card detect is true */ |
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if ((inw(MRSHPC_CSR) & 0x0080) == 0){ |
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outw(0x0674 ,MRSHPC_CPWCR); /* Card Vcc is 3.3v? */ |
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}else{ |
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outw(0x0678 ,MRSHPC_CPWCR); /* Card Vcc is 5V */ |
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} |
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udelay( 100000 ); /* wait for power on */ |
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}else{ |
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return 1; |
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} |
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/*
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* PC-Card window open |
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* flag == COMMON/ATTRIBUTE/IO |
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*/ |
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/* common window open */ |
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outw(0x8a84,MRSHPC_MW0CR1); /* window 0xb8400000 */ |
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if ((inw(MRSHPC_CSR) & 0x4000) != 0) |
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outw(0x0b00,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 1 */ |
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else |
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outw(0x0300,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 0 */ |
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/* attribute window open */ |
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outw(0x8a85,MRSHPC_MW1CR1); /* window 0xb8500000 */ |
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if ((inw(MRSHPC_CSR) & 0x4000) != 0) |
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outw(0x0a00,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 1 */ |
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else |
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outw(0x0200,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 0 */ |
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/* I/O window open */ |
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outw(0x8a86,MRSHPC_IOWCR1); /* I/O window 0xb8600000 */ |
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outw(0x0008,MRSHPC_CDCR); /* I/O card mode */ |
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if ((inw(MRSHPC_CSR) & 0x4000) != 0) |
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outw(0x0a00,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1 */ |
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else |
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outw(0x0200,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0 */ |
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outw(0x0000,MRSHPC_ISR); |
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outw(0x2000,MRSHPC_ICR); |
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outb(0x00,(CFG_MARUBUN_MW2 + 0x206)); |
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outb(0x42,(CFG_MARUBUN_MW2 + 0x200)); |
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return 0; |
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} |
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int pcmcia_off (void) |
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{ |
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printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n"); |
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return 0; |
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} |
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#endif /* CONFIG_MARUBUN_PCCARD */ |
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