January 2004 - U-Boot

[U-Boot-Users] environment not being used
by Shamile Khan 05 Feb '04

05 Feb '04

Hi, I am using U-boot on our FPGA based board. Currently, its not possible to execute instructions directly from flash on our board since our flash device is configured as an 8-bit device and it is connected to a 32-bit processor bus. To get around this, we have a small program which is stored in FPGA bitstream and runs in FPGA on-chip memory (called BRAM). This program copies u-boot binary image from flash to sdram and jumps to it. This allows U-boot to run. However the problem is that the environment variables saved in flash are not being used even though U-boot has been configured with the CFG_ENV_IS_IN_FLASH option turned on. CFG_FLASH_BASE has been set to the flash base address of u-boot and when I use saveenv the environment is saved at the proper offset CFG_ENV_OFFSET. The only thing thats a bit different for my U-boot configuration is that CFG_MONITOR_BASE is set to the sdram base address where U-boot starts executing from instead of being set to CFG_FLASH_BASE. Any ideas why the environment variables in flash do not get used? Thanks, Shamile

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[U-Boot-Users] U-Boot with gcc-3.3.2 and ARM926EJS Targets fails due to __udiv0
by Markus Pietrek 01 Feb '04

01 Feb '04

Hi folks, I'm currently porting U-Boot 1.0.0 to a NetSilicon NS9750 (ARM926EJS core). This port is partly derived from board/omap1610inn. The compiler is gcc-3.3.2, taken from the uClibc toolchain. For my target the compiler is using his internal libgcc.a:__div0 routine which of course fails (it's an SWI instruction). But compiling U-Boot for an smdk2410 platform with the same compiler uses the correct U-Boot's own __div0 code. I can't see any relevant differences in both build lines. Can anyone help me? And is it really necessary to include libgcc.a? The build line for the NS9750: ======================== UNDEF_SYM=`arm-linux-objdump -x board/ns9750dev/libns9750dev.a cpu/arm926ejs/libarm926ejs.a lib_arm/libarm.a fs/jffs2/libjffs2.a fs/fdos/libfdos.a fs/fat/libfat.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a lib_generic/libgeneric.a |sed -n -e 's/.*$__u_boot_cmd_.*$/-u\1/p'|sort|uniq`;\ arm-linux-ld -Bstatic -T /targets/ewp/LxMOD/build/apps/u-boot-1.0.0/board/ns9750dev/u-boot.lds -Ttext 0x00F80000 $UNDEF_SYM cpu/arm926ejs/start.o \ --start-group board/ns9750dev/libns9750dev.a cpu/arm926ejs/libarm926ejs.a lib_arm/libarm.a fs/jffs2/libjffs2.a fs/fdos/libfdos.a fs/fat/libfat.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a lib_generic/libgeneric.a -L /usr/local/LxNETES-3/arm-linux/lib/gcc-lib/arm-linux/3.3.2 -lgcc --end-group \ -Map u-boot.map -o u-boot ======================== The relevant entry in u-boot.map for __div0: =========================== /usr/local/LxNETES-3/arm-linux/lib/gcc-lib/arm-linux/3.3.2/libgcc.a(_udivsi3.o) drivers/libdrivers.a(serial_ns9750.o) (__udivsi3) / Compilation ============================ The build line for SMDK2410 =======================- UNDEF_SYM=`arm-linux-objdump -x board/smdk2410/libsmdk2410.a cpu/arm920t/libarm920t.a lib_arm/libarm.a fs/jffs2/libjffs2.a fs/fdos/libfdos.a fs/fat/libfat.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a lib_generic/libgeneric.a |sed -n -e 's/.*$__u_boot_cmd_.*$/-u\1/p'|sort|uniq`;\ arm-linux-ld -Bstatic -T /targets/ewp/LxMOD/build/apps/u-boot.smdk/board/smdk2410/u-boot.lds -Ttext 0x33F80000 $UNDEF_SYM cpu/arm920t/start.o \ --start-group board/smdk2410/libsmdk2410.a cpu/arm920t/libarm920t.a lib_arm/libarm.a fs/jffs2/libjffs2.a fs/fdos/libfdos.a fs/fat/libfat.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a lib_generic/libgeneric.a -L /usr/local/LxNETES-3/arm-linux/lib/gcc-lib/arm-linux/3.3.2 -lgcc --end-group \ -Map u-boot.map -o u-boot =================== The relevant entry in u-boot.map for __div0: ==================== lib_arm/libarm.a(_udivsi3.o) cpu/arm920t/libarm920t.a(speed.o) (__udivsi3) -- Markus Pietrek FS Forth-Systeme GmbH Phone: +49 (7667) 908 145, FAX +49 (7667) 908 221

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[U-Boot-Users] Support for AMD Flash SecSi Sector
by Josef Baumgartner 01 Feb '04

01 Feb '04

Hi, we use an AMD 29LV640D flash on our MCF5272 board. This flash has a 128 Word sector called SecSi which is one time programmable. We'd like to use the SecSi sector of the flash to store board information, as serial number and ethernet MAC address. I'll start to implement support for the SecSi sector in u-boot. Is there anybody, still working on this topic? Are there any suggestions how to implement it? I think of adding some special commands in cmd_flash.c to read and prog the SecSi sector. Additionally I would change the read function for the "ethaddr" to use the SeCsi sector instead of the environment. Regards, Josef Baumgartner

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[U-Boot-Users] Flashen eines jungfräulichen TQM8260 boards mit dem BDI 2000
by "Aßmus, Ingo" 31 Jan '04

31 Jan '04

Hallo, ich habe mir das flash meines TQM8260 boards "zerschossen". Nun möchte ich das Flash mit dem BDI2000 neu brennen. (RSTCONF# Jumper gesetzt). Allerdings quittiert der BDI2000 den Brennversuch mit: "# Programming flash memory failed at 0x00000000" (das flash ist bereits gelöscht ...) Ich erinnere mich noch dunkel, dass man zum Brennen (in diesem Zustand des Boards) noch in irgendeinem SPR-Register ein Bit setzen musste, um den 64Bit Brennmodus zu unterstützen. War doch so, oder !? Wer kann mir noch mal kurz auf die Sprünge helfen ? Danke! Gruß Ingo Assmus PS: als Config-File für den BDI verwende ich das File von Wolfgangs ftp-server ftp://ftp.denx.de/pub/BDI2000/

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[U-Boot-Users] u-boot with diskonchip millennium plus?
by Deya 31 Jan '04

31 Jan '04

Hi, Hi, I am working on PXA255 based one. If I have to use M-systems diskonchip millennium plus as boot device instead of intel's flash memory, does u-boot support booting from DOCMP? I hope in DOCMP, there are IPL and SPL codes that gets executed and TrueFFS driver gets loaded after that the DOCMP is emulated as harddisk? How about using DOCMP with u-boot? Give me a suggestion please. Regards, Deya. ________________________________________________________________________ Yahoo! India Mobile: Download the latest polyphonic ringtones. Go to http://in.mobile.yahoo.com

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[U-Boot-Users] Production und U-boot
by Matias Sundman (AL/EAB) 31 Jan '04

31 Jan '04

Hi all, I would like to have your views on how U-boot is used in production. We will have Boards that has U-boot as the bootloader. U-boot will be burned in flash by means of JTAG. Later the boards will be put in a subrack for parallel SW download and Flashing. Now what I am thinking of is to program U-boot to recognize a pin in the backplane, if the pin is set the board is in a production facility - BOOTP and a TFTP download of the flash image shall be done, and burned in flash ( by U-boot ). The pin is set by production staff. If it is not set U-boot shall start a Image from flash ( Containing Linux and a Rootfile system ) since it is in a "sharp" environment. Any other ideas? Cheers // Matias

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[U-Boot-Users] Filesystem required or not?
by Deya 31 Jan '04

31 Jan '04

Hi, I am working with PXA255. I have the bootloader(u-boot) and linux kernel ported to arm. I will have my bootlaoder, linux OS in Flash. I want to have my linux OS up in the board. What else do i need to do? Do I need a file system for flash? Regards, Deya. ________________________________________________________________________ Yahoo! India Mobile: Download the latest polyphonic ringtones. Go to http://in.mobile.yahoo.com

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[U-Boot-Users] AMD Mirror Bit Write Buffer Programing algorythm troubles
by Conn Clark 30 Jan '04

30 Jan '04

Hello all, I'm having troubles with an AMD Mirror Bit Write Buffer Programing algorythm I have written for U-Boot. I'm hoping that someone can provide some insight to the problem. We are using an Am29LV320MB part and according to the data sheet I am doing everything correctly (at least I think I am ). So if someone could confirm my code is valid or wrong I would appreciate it. I am having troubles with the flash part decraring it has timed out. It does complete the first buffer programing sequence and all programed data is valid. If I force it to continue only the first buffer write to each sector is programed. My problems may be due to a bad chip. This is a prototype and we had some issues with the power supply that may have dammaged the chip. I doubt this because our Jtag debugger programs this part in write buffer mode just fine. Below is the two functions of intrest and I have attached the full flash.c file. /************* Begin code *****************/ #ifdef WRITE_BUFFER_PROG int write_buffer_program(flash_info_t *info, ulong dest, char *src); #endif /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp, data; int i, l, rc; wp = (addr & ~3); /* get lower word aligned address */ /* * handle unaligned start bytes */ if ((l = addr - wp) != 0) { data = 0; for (i=0, cp=wp; i<l; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } for (; i<4 && cnt>0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } for (; cnt==0 && i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; } /* * handle word aligned part */ while (cnt >= 4) { #ifdef WRITE_BUFFER_PROG if((cnt>=32)& !(wp & 0x1F)) { /* if destination is aligned on 32 byte boundry use write burst */ if ((rc = write_buffer_program(info,wp,src)) != 0) { return (rc); } wp += 32; src += 32; cnt -= 32; } else #endif { data = 0; for (i=0; i<4; ++i) { data = (data << 8) | *src++; } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; cnt -= 4; } } if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ data = 0; for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } for (; i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } return (write_word(info, wp, data)); } #ifdef WRITE_BUFFER_PROG /*----------------------------------------------------------------------- * Write a bunch of word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased * 3 - write buffer abort */ int write_buffer_program(flash_info_t *info, ulong dest, char *src) { volatile CFG_FLASH_WORD_SIZE *target_sector; volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[0]); volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *)dest; volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *)src; CFG_FLASH_WORD_SIZE progstat; ulong start; int flag; int i,j; j=info->sector_count -1; /*find sector start address to program*/ while(info->start[j] > dest) j--; target_sector = (CFG_FLASH_WORD_SIZE *)(info->start[j]); /* Check if Flash is (sufficiently) erased */ /* if ((*dest2 & *data2) != *data2) { return (2); } */ /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; target_sector[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00250025; /* write to buffer command */ /*write count of words to buffer minus 1 */ target_sector[CFG_FLASH_ADDR0] = (32/sizeof(CFG_FLASH_WORD_SIZE)) - 1 ; /*write first word */ /* dest2[0] = data2[0]; */ /* write the rest */ i=0; do { dest2[i] = data2[i]; i++; }while(i<(32/sizeof(CFG_FLASH_WORD_SIZE))); /*write buffer command */ target_sector[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00290029; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* data polling for D7 */ i--; /* decrement index to point to last word written */ start = get_timer (0); while( ((progstat=dest2[i]) & (CFG_FLASH_WORD_SIZE)0x00800080) != /*check for chip time out or abort*/ (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) ){ if(progstat & (CFG_FLASH_WORD_SIZE)0x00220022) { if(progstat & (CFG_FLASH_WORD_SIZE)0x00200020){ /*check for chip time out*/ /* return success if it really did work */ if( (dest2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) == (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) ) return 0; data2[i] = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* reset flash chip */ printf("TimeOut\n"); /* for debugging only, remove */ return 1; } /* return success if it really did work */ if( (dest2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) == (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) ) return 0; /* if your here it is an abort condition */ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* Write buffer abort reset */ printf("abort\n"); /* for debugging only, remove */ return 3; } if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { return (1); /* U-Boot timer time out */ } } return (0); } #endif /* WRITE_BUFFER_PROG */ /*********** End code *********/ Thanks Conn Clark -- ***************************************************************** If you live at home long enough, your parents will move out. (Warning they may try to sell their house out from under you.) ***************************************************************** Conn Clark Engineering Stooge clark(a)esteem.com Electronic Systems Technology Inc. www.esteem.com Stock Ticker Symbol ELST "clark(a)esteem.com" Copyright 2000 By Electronic Systems Technology This email address may be used to communicate to Conn Clark provided it is not being used for advertisement purposes, unless prior written consent is given. This email address may not be sold under any circumstances. All other rights reserved. /* * (C) Copyright 2001 * Stefan Roese, esd gmbh germany, stefan.roese(a)esd-electronics.com * * (C) Copyright 2004 * Conn Clark, Electronic Systems Technology USA, clark(a)esteem.com * * See file CREDITS for list of people who contributed to this * project. * * 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. * * 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 */ #include <common.h> #include <ppc4xx.h> #include <asm/processor.h> flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ /*----------------------------------------------------------------------- * Functions */ ulong flash_get_size (vu_long * addr, flash_info_t * info); void flash_get_offsets (ulong base, flash_info_t * info); /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long size_b0; int i; uint pbcr; unsigned long base_b0; int size_val = 0; /* Init: no FLASHes known */ for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } /* Static FLASH Bank configuration here - FIXME XXX */ size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0<<20); } /* Setup offsets */ flash_get_offsets (-size_b0, &flash_info[0]); /* Re-do sizing to get full correct info */ mtdcr(ebccfga, pb0cr); pbcr = mfdcr(ebccfgd); mtdcr(ebccfga, pb0cr); base_b0 = -size_b0; switch (size_b0) { case 1 << 20: size_val = 0; break; case 2 << 20: size_val = 1; break; case 4 << 20: size_val = 2; break; case 8 << 20: size_val = 3; break; case 16 << 20: size_val = 4; break; } pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); mtdcr(ebccfgd, pbcr); /* Monitor protection ON by default */ (void)flash_protect(FLAG_PROTECT_SET, -CFG_MONITOR_LEN, 0xffffffff, &flash_info[0]); flash_info[0].size = size_b0; return (size_b0); } /*----------------------------------------------------------------------- */ void flash_get_offsets (ulong base, flash_info_t *info) { int i; short n; /* set up sector start address table */ if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV320MB) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV640MB)) { /* set sector offsets for bottom boot block type */ for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */ info->start[i] = base; base += 8 << 10; } while (i < info->sector_count) { /* 64k regular sectors */ info->start[i] = base; base += 64 << 10; ++i; } } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV320MT) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV640MT)) { /* set sector offsets for top boot block type */ base += info->size; i = info->sector_count; for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */ base -= 8 << 10; --i; info->start[i] = base; } while (i > 0) { /* 64k regular sectors */ base -= 64 << 10; --i; info->start[i] = base; } } else { if (info->flash_id & FLASH_BTYPE) { /* set sector offsets for bottom boot block type */ info->start[0] = base + 0x00000000; info->start[1] = base + 0x00004000; info->start[2] = base + 0x00006000; info->start[3] = base + 0x00008000; for (i = 4; i < info->sector_count; i++) { info->start[i] = base + (i * 0x00010000) - 0x00030000; } } else { /* set sector offsets for top boot block type */ i = info->sector_count - 1; info->start[i--] = base + info->size - 0x00004000; info->start[i--] = base + info->size - 0x00006000; info->start[i--] = base + info->size - 0x00008000; for (; i >= 0; i--) { info->start[i] = base + i * 0x00010000; } } } } /*----------------------------------------------------------------------- */ void flash_print_info (flash_info_t *info) { int i; int k; int size; int erased; volatile unsigned long *flash; if (info->flash_id == FLASH_UNKNOWN) { printf ("missing or unknown FLASH type\n"); return; } switch (info->flash_id & FLASH_VENDMASK) { case FLASH_MAN_AMD: printf ("AMD "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_AMLV320MT: printf ("AM29LV320MT (32 M, top sector)\n"); break; case FLASH_AMLV320MB: printf ("AM29LV320MB (32 M, bottom sector)\n"); break; case FLASH_AMLV640MT: printf ("AM29LV640MT (64 M, top boot sector)\n"); break; case FLASH_AMLV640MB: printf ("AM29LV640MB (64 M, bottom boot sector)\n"); break; default: printf ("Unknown Chip Type\n"); break; } printf (" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); printf (" Sector Start Addresses:"); for (i=0; i<info->sector_count; ++i) { #ifdef CFG_FLASH_EMPTY_INFO /* * Check if whole sector is erased */ if (i != (info->sector_count-1)) size = info->start[i+1] - info->start[i]; else size = info->start[0] + info->size - info->start[i]; erased = 1; flash = (volatile unsigned long *)info->start[i]; size = size >> 2; /* divide by 4 for longword access */ for (k=0; k<size; k++) { if (*flash++ != 0xffffffff) { erased = 0; break; } } if ((i % 5) == 0) printf ("\n "); /* print empty and read-only info */ printf (" %08lX%s%s", info->start[i], erased ? " E" : " ", info->protect[i] ? "RO " : " "); #else if ((i % 5) == 0) printf ("\n "); printf (" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); #endif } printf ("\n"); return; } /*----------------------------------------------------------------------- */ /*----------------------------------------------------------------------- */ /* * The following code cannot be run from FLASH! */ ulong flash_get_size (vu_long *addr, flash_info_t *info) { short i; short n; CFG_FLASH_WORD_SIZE value,value2,value3; ulong base = (ulong)addr; volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)addr; /* Write auto select command: read Manufacturer ID */ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00900090; value = addr2[CFG_FLASH_READ0]; switch (value) { case (CFG_FLASH_WORD_SIZE)AMD_MANUFACT: info->flash_id = FLASH_MAN_AMD; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; return (0); /* no or unknown flash */ } addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00900090; value = addr2[CFG_FLASH_READ1]; /* device ID */ value2 = addr2[CFG_FLASH_READ14]; value3 = addr2[CFG_FLASH_READ15]; switch (value2) { case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320MTB_2: info->sector_count = 71; info->size = 0x00400000; /* => 4 MB */ if(value3==AMD_ID_LV320MT_3) info->flash_id += FLASH_AMLV320MT; else info->flash_id += FLASH_AMLV320MB; break; case (CFG_FLASH_WORD_SIZE)AMD_ID_LV640MTB_2: info->sector_count = 135; info->size = 0x00800000; /* => 4 MB */ if(value3==AMD_ID_LV320MT_3) info->flash_id += FLASH_AMLV640MT; else info->flash_id += FLASH_AMLV640MB; break; default: info->flash_id = FLASH_UNKNOWN; return (0); /* => no or unknown flash */ } /* set up sector start address table */ if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV320MB) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV640MB)) { /* set sector offsets for bottom boot block type */ for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */ info->start[i] = base; base += 8 << 10; } while (i < info->sector_count) { /* 64k regular sectors */ info->start[i] = base; base += 64 << 10; ++i; } } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV320MT) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMLV640MT)) { /* set sector offsets for top boot block type */ base += info->size; i = info->sector_count; for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */ base -= 8 << 10; --i; info->start[i] = base; } while (i > 0) { /* 64k regular sectors */ base -= 64 << 10; --i; info->start[i] = base; } } /* check for protected sectors */ for (i = 0; i < info->sector_count; i++) { /* Write auto select command: read protection status */ addr2 = (CFG_FLASH_WORD_SIZE *)info->start[i]; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00900090; /* read sector protection at sector address, (A7 .. A0) = 0x02 */ /* D0 = 1 if protected */ info->protect[i] = addr2[CFG_FLASH_READ2] & 1; } /* * Prevent writes to uninitialized FLASH. */ if (info->flash_id != FLASH_UNKNOWN) { addr2 = (CFG_FLASH_WORD_SIZE *)info->start[0]; *addr2 = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ } return (info->size); } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t *info, int s_first, int s_last) { volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *)(info->start[0]); volatile CFG_FLASH_WORD_SIZE *addr2; int flag, prot, sect, l_sect; ulong start, now, last; if ((s_first < 0) || (s_first > s_last)) { if (info->flash_id == FLASH_UNKNOWN) { printf ("- missing\n"); } else { printf ("- no sectors to erase\n"); } return 1; } if (info->flash_id == FLASH_UNKNOWN) { printf ("Can't erase unknown flash type - aborted\n"); return 1; } prot = 0; for (sect=s_first; sect<=s_last; ++sect) { if (info->protect[sect]) { prot++; } } if (prot) { printf ("- Warning: %d protected sectors will not be erased!\n", prot); } else { printf ("\n"); } l_sect = -1; /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); /* Start erase on unprotected sectors */ for (sect = s_first; sect<=s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[sect]); if (sect == s_first) { addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00800080; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; } addr2[0] = (CFG_FLASH_WORD_SIZE)0x00300030; /* sector erase */ l_sect = sect; } } /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* wait at least 80us - let's wait 1 ms */ udelay (1000); /* * We wait for the last triggered sector */ if (l_sect < 0) goto DONE; start = get_timer (0); last = start; addr = (CFG_FLASH_WORD_SIZE *)(info->start[l_sect]); while ((addr[0] & (CFG_FLASH_WORD_SIZE)0x00800080) != (CFG_FLASH_WORD_SIZE)0x00800080) { if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); return 1; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } DONE: /* reset to read mode */ addr = (CFG_FLASH_WORD_SIZE *)info->start[0]; addr[0] = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ printf (" done\n"); return 0; } /*----------------------------------------------------------------------- * Functions */ /*#define WRITE_BUFFER_PROG 1 */ int write_word (flash_info_t *info, ulong dest, ulong data); #ifdef WRITE_BUFFER_PROG int write_buffer_program(flash_info_t *info, ulong dest, char *src); #endif /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp, data; int i, l, rc; wp = (addr & ~3); /* get lower word aligned address */ /* * handle unaligned start bytes */ if ((l = addr - wp) != 0) { data = 0; for (i=0, cp=wp; i<l; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } for (; i<4 && cnt>0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } for (; cnt==0 && i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; } /* * handle word aligned part */ while (cnt >= 4) { #ifdef WRITE_BUFFER_PROG if((cnt>=32)& !(wp & 0x1F)) { /* if destination is aligned on 32 byte boundry use write burst */ if ((rc = write_buffer_program(info,wp,src)) != 0) { return (rc); } wp += 32; src += 32; cnt -= 32; } else #endif { data = 0; for (i=0; i<4; ++i) { data = (data << 8) | *src++; } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; cnt -= 4; } } if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ data = 0; for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } for (; i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } return (write_word(info, wp, data)); } /*----------------------------------------------------------------------- * Write a word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ int write_word (flash_info_t *info, ulong dest, ulong data) { volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[0]); volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *)dest; volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *)&data; ulong start; int flag; int i; /* Check if Flash is (sufficiently) erased */ if ((*((volatile CFG_FLASH_WORD_SIZE *)dest) & (CFG_FLASH_WORD_SIZE)data) != (CFG_FLASH_WORD_SIZE)data) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); for (i=0; i<4/sizeof(CFG_FLASH_WORD_SIZE); i++) { addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00A000A0; dest2[i] = data2[i]; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); while ((dest2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) != (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { return (1); } } } return (0); } #ifdef WRITE_BUFFER_PROG /*----------------------------------------------------------------------- * Write a bunch of word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased * 3 - write buffer abort */ int write_buffer_program(flash_info_t *info, ulong dest, char *src) { volatile CFG_FLASH_WORD_SIZE *target_sector; volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[0]); volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *)dest; volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *)src; CFG_FLASH_WORD_SIZE progstat; ulong start; int flag; int i,j; j=info->sector_count -1; /*find sector start address to program*/ while(info->start[j] > dest) j--; target_sector = (CFG_FLASH_WORD_SIZE *)(info->start[j]); /* Check if Flash is (sufficiently) erased */ /* if ((*dest2 & *data2) != *data2) { return (2); } */ /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; target_sector[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00250025; /* write to buffer command */ /*write count of words to buffer minus 1 */ target_sector[CFG_FLASH_ADDR0] = (32/sizeof(CFG_FLASH_WORD_SIZE)) - 1 ; /*write first word */ /* dest2[0] = data2[0]; */ /* write the rest */ i=0; do { dest2[i] = data2[i]; i++; }while(i<(32/sizeof(CFG_FLASH_WORD_SIZE))); /*write buffer command */ target_sector[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00290029; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* data polling for D7 */ i--; /* decrement index to point to last word written */ start = get_timer (0); while( ((progstat=dest2[i]) & (CFG_FLASH_WORD_SIZE)0x00800080) != /*check for chip time out or abort*/ (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) ){ if(progstat & (CFG_FLASH_WORD_SIZE)0x00220022) { if(progstat & (CFG_FLASH_WORD_SIZE)0x00200020){ /*check for chip time out*/ /* return success if it really did work */ if( (dest2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) == (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) ) return 0; data2[i] = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* reset flash chip */ printf("TimeOut\n"); /* for debugging only, remove */ return 1; } /* return success if it really did work */ if( (dest2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) == (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080) ) return 0; /* if your here it is an abort condition */ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* Write buffer abort reset */ printf("abort\n"); /* for debugging only, remove */ return 3; } if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { return (1); /* U-Boot timer time out */ } } return (0); } #endif /* WRITE_BUFFER_PROG */ /*----------------------------------------------------------------------- */

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[U-Boot-Users] Production und U-boot
by Matias Sundman (AL/EAB) 30 Jan '04

30 Jan '04

Im trying once again, my mail from yesterday seems lost... > -----Original Message----- > From: Matias Sundman (AL/EAB) > Sent: den 29 januari 2004 12:45 > To: U-Boot-Users > Subject: Production und U-boot > > > Hi all, > I would like to have your views on how U-boot is used in production. > > We will have Boards that has U-boot as the bootloader. U-boot will be burned in flash by means of JTAG. > Later the boards will be put in a subrack for parallel SW download and Flashing. > > Now what I am thinking of is to program U-boot to recognize a pin in the backplane, if the pin is set > the board is in a production facility - BOOTP and a TFTP download of the flash image shall be done, and burned in flash ( by U-boot ). The pin is set by production staff. > > If it is not set U-boot shall start a Image from flash ( Containing Linux and a Rootfile system ) since it is in a "sharp" environment. > > Any other ideas? > > Cheers // Matias > >

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[U-Boot-Users] MPC852 support
by Grubmair Peter 30 Jan '04

30 Jan '04

Hi, I would like to know if U-boot supports MPC82, especially its 10/100 MBit ethernet If and autosensing. Best regards Peter

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