[U-Boot-Users] SystemACE Patch

-- Steve Williams "The woods are lovely, dark and deep. steve at XXXXXXXXXX But I have promises to keep, http://www.XXXXXXXXXX and lines to code before I sleep, http://www.picturel.com And lines to code before I sleep." diff -purN -xEntries -x'*.orig' u-boot.orig/README u-boot/README --- u-boot.orig/README 2004-02-08 14:55:39.000000000 -0800 +++ u-boot/README 2004-02-09 16:06:41.000000000 -0800 @@ -1410,6 +1410,20 @@ The following options need to be configu allows to read/write in Dataflash via the standard commands cp, md... +- SystemACE Support: + CONFIG_SYSTEMACE + + Adding this option adds support for Xilinx SystemACE + chips attached via some sort of local bus. The address + of the chip must alsh be defined in the + CFG_SYSTEMACE_BASE macro. For example: + + #define CONFIG_SYSTEMACE + #define CFG_SYSTEMACE_BASE 0xf0000000 + + When SystemACE support is added, the "ace" device type + becomes available to the fat commands, i.e. fatls. + - Show boot progress: CONFIG_SHOW_BOOT_PROGRESS diff -purN -xEntries -x'*.orig' u-boot.orig/common/Makefile u-boot/common/Makefile --- u-boot.orig/common/Makefile 2004-01-06 14:38:21.000000000 -0800 +++ u-boot/common/Makefile 2004-02-03 17:41:27.000000000 -0800 @@ -28,7 +28,7 @@ LIB = libcommon.a AOBJS = COBJS = main.o ACEX1K.o altera.o bedbug.o \ - cmd_autoscript.o \ + cmd_ace.o cmd_autoscript.o \ cmd_bdinfo.o cmd_bedbug.o cmd_bmp.o cmd_boot.o cmd_bootm.o \ cmd_cache.o cmd_console.o \ cmd_date.o cmd_dcr.o cmd_diag.o cmd_doc.o cmd_dtt.o \ diff -purN -xEntries -x'*.orig' u-boot.orig/common/cmd_ace.c u-boot/common/cmd_ace.c --- u-boot.orig/common/cmd_ace.c 1969-12-31 16:00:00.000000000 -0800 +++ u-boot/common/cmd_ace.c 2004-02-04 18:46:50.000000000 -0800 @@ -0,0 +1,205 @@ +/* + * Copyright (c) 2004 Picture Elements, Inc. + * Stephen Williams (XXXXXXXXXXXXXXXX) + * + * This source code is free software; you can redistribute it + * and/or modify it in source code form 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ident "$Id:$" + +/* + * The Xilinx SystemACE chip support is activated by defining + * CONFIG_SYSTEMACE to turn on support, and CFG_SYSTEMACE_BASE + * to set the base address of the device. This code currently + * assumes that the chip is connected via a byte-wide bus. + * + * The CONFIG_SYSTEMACE also adds to fat support the device class + * "ace" that allows the user to execute "fatls ace 0" and the + * like. This works by making the systemace_get_dev function + * available to cmd_fat.c:get_dev and filling in a block device + * description that has all the bits needed for FAT support to + * read sectors. + */ + +# include <common.h> +# include <command.h> +# include <systemace.h> +# include <part.h> +# include <asm/io.h> + +#ifdef CONFIG_SYSTEMACE + +/* + * The ace_readw and writew functions read/write 16bit words, but the + * offset value is the BYTE offset as most used in the Xilinx + * datasheet for the SystemACE chip. The CFG_SYSTEMACE_BASE is defined + * to be the base address for the chip, usually in the local + * peripheral bus. + */ +static unsigned ace_readw(unsigned offset) +{ + return readw(CFG_SYSTEMACE_BASE+offset); +} + +static unsigned ace_writew(unsigned val, unsigned offset) +{ + writew(val, CFG_SYSTEMACE_BASE+offset); +} + +/* */ + +static unsigned long systemace_read(int dev, + unsigned long start, + unsigned long blkcnt, + unsigned long *buffer); + +static block_dev_desc_t systemace_dev = {0}; + +static int get_cf_lock(void) +{ + int retry = 10; + + /* CONTROLREG = LOCKREG */ + ace_writew(0x0002, 0x18); + + /* Wait for MPULOCK in STATUSREG[15:0] */ + while (! (ace_readw(0x04) & 0x0002)) { + + if (retry < 0) + return -1; + + udelay(100000); + retry -= 1; + } + + return 0; +} + +static void release_cf_lock(void) +{ + /* CONTROLREG = none */ + ace_writew(0x0000, 0x18); +} + +block_dev_desc_t * systemace_get_dev(int dev) +{ + /* The first time through this, the systemace_dev object is + not yet initialized. In that case, fill it in. */ + if (systemace_dev.blksz == 0) { + systemace_dev.if_type = IF_TYPE_UNKNOWN; + systemace_dev.part_type = PART_TYPE_UNKNOWN; + systemace_dev.type = DEV_TYPE_HARDDISK; + systemace_dev.blksz = 512; + systemace_dev.removable = 1; + systemace_dev.block_read = systemace_read; + } + + return &systemace_dev; +} + +/* + * This function is called (by dereferencing the block_read pointer in + * the dev_desc) to read blocks of data. The return value is the + * number of blocks read. A zero return indicates an error. + */ +static unsigned long systemace_read(int dev, + unsigned long start, + unsigned long blkcnt, + unsigned long *buffer) +{ + unsigned val; + int retry; + unsigned char*dp = (unsigned char*)buffer; + + if (get_cf_lock() < 0) { + unsigned status = ace_readw(0x04); + + /* If CFDETECT is false, card is missing. */ + if (! (status&0x0010)) { + printf("** CompactFlash card not present. **\n"); + return 0; + } + + printf("**** ACE locked away from me (STATUSREG=%04x)\n", status); + return 0; + } + + retry = 2000; + for (;;) { + unsigned val = ace_readw(0x04); + + /* If CFDETECT is false, card is missing. */ + if (! (val & 0x0010)) { + printf("**** ACE CompactFlash not found.\n"); + release_cf_lock(); + return 0; + } + + /* If RDYFORCMD, then we are ready to go. */ + if (val & 0x0100) + break; + + if (retry < 0) { + printf("**** SystemACE not ready.\n"); + release_cf_lock(); + return 0; + } + + udelay(1000); + retry -= 1; + } + + /* Write LBA block address */ + ace_writew(start & 0xffff, 0x10); + start >>= 16; + ace_writew(start & 0xff, 0x12); + + /* Write sector count | ReadMemCardData. */ + ace_writew(blkcnt | 0x0300, 0x14); + + /* CONTROLREG = CFGRESET|LOCKREQ */ + ace_writew(0x0082, 0x18); + + retry = blkcnt * 16; + while (retry > 0) { + int idx; + + /* Wait for buffer to become ready. */ + while (! (ace_readw(0x04) & 0x0020)) { + udelay(1000); + } + + /* Read 16 words of 2bytes from the sector buffer. */ + for (idx = 0 ; idx < 16 ; idx += 1) { + unsigned short val = ace_readw(0x40); + *dp++ = val & 0xff; + *dp++ = (val>>8) & 0xff; + } + + retry -= 1; + } + + release_cf_lock(); + + return blkcnt; +} + + +#endif + +/* + * $Log: $ + */ + diff -purN -xEntries -x'*.orig' u-boot.orig/common/cmd_fat.c u-boot/common/cmd_fat.c --- u-boot.orig/common/cmd_fat.c 2003-10-15 16:53:50.000000000 -0700 +++ u-boot/common/cmd_fat.c 2004-02-03 21:18:51.000000000 -0800 @@ -63,6 +63,12 @@ block_dev_desc_t *get_dev (char* ifname, return(mmc_get_dev(dev)); } #endif +#if defined(CONFIG_SYSTEMACE) + if (strcmp(ifname,"ace")==0) { + extern block_dev_desc_t * systemace_get_dev(int dev); + return(systemace_get_dev(dev)); + } +#endif return NULL; } diff -purN -xEntries -x'*.orig' u-boot.orig/disk/part.c u-boot/disk/part.c --- u-boot.orig/disk/part.c 2004-01-03 11:43:49.000000000 -0800 +++ u-boot/disk/part.c 2004-02-03 18:04:47.000000000 -0800 @@ -36,7 +36,7 @@ #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \ (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ (CONFIG_COMMANDS & CFG_CMD_USB) || \ - (CONFIG_MMC) ) + (CONFIG_MMC) || (CONFIG_SYSTEMACE) ) /* ------------------------------------------------------------------------- */ /* @@ -107,7 +107,8 @@ void dev_print (block_dev_desc_t *dev_de #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \ (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ - (CONFIG_COMMANDS & CFG_CMD_USB) ) + (CONFIG_COMMANDS & CFG_CMD_USB) || \ + defined(CONFIG_SYSTEMACE) ) #if defined(CONFIG_MAC_PARTITION) || \ defined(CONFIG_DOS_PARTITION) || \ diff -purN -xEntries -x'*.orig' u-boot.orig/disk/part_dos.c u-boot/disk/part_dos.c --- u-boot.orig/disk/part_dos.c 2003-09-10 15:30:55.000000000 -0700 +++ u-boot/disk/part_dos.c 2004-02-03 18:06:24.000000000 -0800 @@ -37,7 +37,8 @@ #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \ (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ - (CONFIG_COMMANDS & CFG_CMD_USB) ) && defined(CONFIG_DOS_PARTITION) + (CONFIG_COMMANDS & CFG_CMD_USB) || \ + (CONFIG_SYSTEMACE)) && defined(CONFIG_DOS_PARTITION) /* Convert char[4] in little endian format to the host format integer */ diff -purN -xEntries -x'*.orig' u-boot.orig/include/systemace.h u-boot/include/systemace.h --- u-boot.orig/include/systemace.h 1969-12-31 16:00:00.000000000 -0800 +++ u-boot/include/systemace.h 2004-02-04 18:47:32.000000000 -0800 @@ -0,0 +1,31 @@ +#ifndef __systemace_H +#define __systemace_H +/* + * Copyright (c) 2004 Picture Elements, Inc. + * Stephen Williams (steve@picturel.com) + * + * This source code is free software; you can redistribute it + * and/or modify it in source code form 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ +#ident "$Id:$" + +#ifdef CONFIG_SYSTEMACE + +# include <part.h> + +block_dev_desc_t * systemace_get_dev(int dev); + +#endif +#endif