flashrom August 2011

flashrom@flashrom.org

42 participants
219 discussions

External programmers
by Carl-Daniel Hailfinger 25 Dec '15

25 Dec '15

Hi, I'm trying to find out which external programmers should be supported next. 1. There was talk of an AVR-based new programmer using the serprog protocol on IRC by someone with the nick "coldelectrons", but I have no idea if he/she is reading this mail. IMHO more hardware using the serprog protocol is always a good idea. 2. All those Willem/Sivava variants. People regularly request those, but I don't think anyone in here owns the hardware. 3. RayeR's SPIPGM. I have a preliminary patch which could work, but I don't have the hardware. Will send the patch to the list soon. 4. LPC^2, Milksop, CheapLPC and other programmers from the Xbox modding community. 5. Dozens of SPI programmer hardware projects scattered over the net. Too many to count, and I'm not sure which of them has more than one user. In general, it seems creating a new programmer hardware design is like writing IRC clients: A nice way to get started in the field. I have no problems merging flashrom support for all of them, but I won't implement support for all of them myself. Regards, Carl-Daniel -- http://www.hailfinger.org/

8 13

Re: [flashrom] [PATCH] dummyflasher.c: add an "empty" parameter and initialize with random bytes by default
by Carl-Daniel Hailfinger 09 May '14

09 May '14

Am 21.07.2011 17:54 schrieb Stefan Tauner: > previously the dummies were initialized to be empty (all ones), which makes writes skip > erasing altogether. with this patch the default is to fill it with random bytes instead and the > old behavior can be enforced with stating "empty=yes" on the command line. > > Signed-off-by: Stefan Tauner <stefan.tauner(a)student.tuwien.ac.at> > Does the following not work for you? dd if=/dev/urandom bs=1k count=4k of=oldimage.bin flashrom -p dummy:emulate=SST25VF032B,image=oldimage.bin -w newimage.bin Regards, Carl-Daniel -- http://www.hailfinger.org/

5 8

Add timeout check to SPI bitbang bus request
by Carl-Daniel Hailfinger 29 Apr '14

29 Apr '14

Hi Iain, your Intel 82540EM which hangs on a flashrom run should spew "Timeout!" messages with this patch. It would be nice if you could tell us how long it waits for each chip probe so I can adjust the timeout value. Please note that this patch will _not_ fix the underlying issue, but I believe that an endless loop on possibly broken hardware is worse than aborting. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006(a)gmx.net> Index: flashrom-bitbang_timeout/flash.h =================================================================== --- flashrom-bitbang_timeout/flash.h (Revision 1185) +++ flashrom-bitbang_timeout/flash.h (Arbeitskopie) @@ -35,6 +35,9 @@ #define ERROR_PTR ((void*)-1) +/* Error codes */ +#define TIMEOUT_ERROR -101 + typedef unsigned long chipaddr; int register_shutdown(void (*function) (void *data), void *data); Index: flashrom-bitbang_timeout/bitbang_spi.c =================================================================== --- flashrom-bitbang_timeout/bitbang_spi.c (Revision 1185) +++ flashrom-bitbang_timeout/bitbang_spi.c (Arbeitskopie) @@ -53,10 +53,11 @@ return bitbang_spi_master->get_miso(); } -static void bitbang_spi_request_bus(void) +static int bitbang_spi_request_bus(void) { if (bitbang_spi_master->request_bus) - bitbang_spi_master->request_bus(); + return bitbang_spi_master->request_bus(); + return 0; } static void bitbang_spi_release_bus(void) @@ -86,7 +87,7 @@ bitbang_spi_master = master; bitbang_spi_half_period = halfperiod; - /* FIXME: Run bitbang_spi_request_bus here or in programmer init? */ + /* FIXME: Run bitbang_spi_request_bus here or per command? */ bitbang_spi_set_cs(1); bitbang_spi_set_sck(0); bitbang_spi_set_mosi(0); @@ -131,13 +132,15 @@ int bitbang_spi_send_command(unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, unsigned char *readarr) { - int i; + int i, ret; /* FIXME: Run bitbang_spi_request_bus here or in programmer init? * Requesting and releasing the SPI bus is handled in here to allow the * programmer to use its own SPI engine for native accesses. */ - bitbang_spi_request_bus(); + ret = bitbang_spi_request_bus(); + if (ret) + return ret; bitbang_spi_set_cs(0); for (i = 0; i < writecnt; i++) bitbang_spi_readwrite_byte(writearr[i]); Index: flashrom-bitbang_timeout/nicintel_spi.c =================================================================== --- flashrom-bitbang_timeout/nicintel_spi.c (Revision 1185) +++ flashrom-bitbang_timeout/nicintel_spi.c (Arbeitskopie) @@ -58,6 +58,8 @@ // #define FL_BUSY 30 // #define FL_ER 31 +#define MAX_REQUEST_LOOPS 10000 + uint8_t *nicintel_spibar; const struct pcidev_status nics_intel_spi[] = { @@ -68,16 +70,27 @@ {}, }; -static void nicintel_request_spibus(void) +static void nicintel_release_spibus(void); + +static int nicintel_request_spibus(void) { uint32_t tmp; + int i = 0; tmp = pci_mmio_readl(nicintel_spibar + FLA); tmp |= 1 << FL_REQ; pci_mmio_writel(tmp, nicintel_spibar + FLA); /* Wait until we are allowed to use the SPI bus. */ - while (!(pci_mmio_readl(nicintel_spibar + FLA) & (1 << FL_GNT))) ; + while (!(pci_mmio_readl(nicintel_spibar + FLA) & (1 << FL_GNT))) { + if (i++ > MAX_REQUEST_LOOPS) { + nicintel_release_spibus(); + msg_perr("%s: Timeout! Aborting.\n", __func__); + return TIMEOUT_ERROR; + } + } + + return 0; } static void nicintel_release_spibus(void) Index: flashrom-bitbang_timeout/mcp6x_spi.c =================================================================== --- flashrom-bitbang_timeout/mcp6x_spi.c (Revision 1185) +++ flashrom-bitbang_timeout/mcp6x_spi.c (Arbeitskopie) @@ -40,22 +40,37 @@ #define MCP6X_SPI_REQUEST 0 #define MCP6X_SPI_GRANT 8 +#define MAX_REQUEST_LOOPS 10000 + void *mcp6x_spibar = NULL; /* Cached value of last GPIO state. */ static uint8_t mcp_gpiostate; -static void mcp6x_request_spibus(void) +static void mcp6x_release_spibus(void); + +static int mcp6x_request_spibus(void) { + int i = 0; + mcp_gpiostate = mmio_readb(mcp6x_spibar + 0x530); mcp_gpiostate |= 1 << MCP6X_SPI_REQUEST; mmio_writeb(mcp_gpiostate, mcp6x_spibar + 0x530); /* Wait until we are allowed to use the SPI bus. */ - while (!(mmio_readw(mcp6x_spibar + 0x530) & (1 << MCP6X_SPI_GRANT))) ; + while (!(mmio_readw(mcp6x_spibar + 0x530) & (1 << MCP6X_SPI_GRANT))) { + if (i++ > MAX_REQUEST_LOOPS) { + /* Update the cache. */ + mcp_gpiostate = mmio_readb(mcp6x_spibar + 0x530); + mcp6x_release_spibus(); + msg_perr("%s: Timeout! Aborting.\n", __func__); + return TIMEOUT_ERROR; + } + } /* Update the cache. */ mcp_gpiostate = mmio_readb(mcp6x_spibar + 0x530); + return 0; } static void mcp6x_release_spibus(void) Index: flashrom-bitbang_timeout/programmer.h =================================================================== --- flashrom-bitbang_timeout/programmer.h (Revision 1185) +++ flashrom-bitbang_timeout/programmer.h (Arbeitskopie) @@ -131,7 +131,7 @@ void (*set_sck) (int val); void (*set_mosi) (int val); int (*get_miso) (void); - void (*request_bus) (void); + int (*request_bus) (void); void (*release_bus) (void); }; -- http://www.hailfinger.org/

4 15

Flashrom stuck using 100% cpu while probing for a chip
by GatoLoko 28 Apr '14

28 Apr '14

I've tried to run flashrom -V to see if it could identify the chip on my new board (AsRock M3A-GLAN), and it got stuck while probing for the first chip. I've tried commenting out that specific chip (AMIC A25L05PT) and then it gets stuck on the next one. Then commented out all AMIC chips, and it got stuck on the next one (the first ATMEL on the list) I've tried with an older flashrom (0.9.2-r1141). It skipped some AMD chips, then got stuck on AMIC again. Talked with "tlt" and "stefanct" on irc and they asked for a strace and a gdb backtrace. Strace produced no results. Gdb log is attached. "stefanct" tried and reproduced it on a machine with nicintel_spi, but warned it was with an unsupported nic: http://paste.flashrom.org/view.php?id=738 -- GatoLoko

4 11

[PATCH] Add git support to the Makefile
by Carl-Daniel Hailfinger 21 Aug '13

21 Aug '13

flashrom relies on svn to export tarballs and only prints the last svn revision in the version message even if flashrom is in a git tree. Print extended version information (version, svn revision, git hash, repository URL). Allow exporting from git trees. This should make git users first-class citizens like svn users. Side note: If anyone has an idea how to make the export target more beautiful (80 column limit etc.), please tell me. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006(a)gmx.net> Index: flashrom-gitfriendly/Makefile =================================================================== --- flashrom-gitfriendly/Makefile (Revision 1145) +++ flashrom-gitfriendly/Makefile (Arbeitskopie) @@ -97,13 +97,15 @@ # of the checked out flashrom files. # Note to packagers: Any tree exported with "make export" or "make tarball" # will not require subversion. The downloadable snapshots are already exported. -SVNVERSION := $(shell LC_ALL=C svnversion -cn . 2>/dev/null | sed -e "s/.*://" -e "s/$[0-9]*$.*/\1/" | grep "[0-9]" || LC_ALL=C svn info . 2>/dev/null | awk '/^Revision:/ {print $$2 }' | grep "[0-9]" || LC_ALL=C git svn info . 2>/dev/null | awk '/^Revision:/ {print $$2 }' | grep "[0-9]" || echo unknown) +SCMVERSION := $(shell LC_ALL=C svnversion -cn . 2>/dev/null | sed -e "s/.*://" -e "s/$[0-9]*$.*/\1/" | grep "[0-9]" || LC_ALL=C svn info . 2>/dev/null | awk '/^Revision:/ {print $$2 }' | grep "[0-9]" || LC_ALL=C git svn info . 2>/dev/null | awk '/^Revision:/ {print $$2 }' | grep "[0-9]" || echo unknown) +SCMEXTVERSION := $(shell LC_ALL=C git rev-parse HEAD 2>/dev/null | sed 's/^./-\0/') +SCMURL := $(shell LC_ALL=C svn info 2>/dev/null | grep URL: | sed 's/.*URL:[[:blank:]]*//' | grep ^. || LC_ALL=C git remote show origin 2>/dev/null |grep URL: | sed 's/.*URL:[[:blank:]]*//' | grep ^. || echo unknown ) RELEASE := 0.9.2 -VERSION := $(RELEASE)-r$(SVNVERSION) +VERSION := $(RELEASE)-r$(SCMVERSION)$(SCMEXTVERSION) RELEASENAME ?= $(VERSION) -SVNDEF := -D'FLASHROM_VERSION="$(VERSION)"' +SCMDEF := -D'FLASHROM_VERSION="$(VERSION)"' -D'FLASHROM_SCMURL="$(SCMURL)"' # Always enable internal/onboard support for now. CONFIG_INTERNAL ?= yes @@ -310,7 +312,7 @@ TAROPTIONS = $(shell LC_ALL=C tar --version|grep -q GNU && echo "--owner=root --group=root") %.o: %.c .features - $(CC) -MMD $(CFLAGS) $(CPPFLAGS) $(FEATURE_CFLAGS) $(SVNDEF) -o $@ -c $< + $(CC) -MMD $(CFLAGS) $(CPPFLAGS) $(FEATURE_CFLAGS) $(SCMDEF) -o $@ -c $< # Make sure to add all names of generated binaries here. # This includes all frontends and libflashrom. @@ -420,9 +422,12 @@ export: @rm -rf $(EXPORTDIR)/flashrom-$(RELEASENAME) - @svn export -r BASE . $(EXPORTDIR)/flashrom-$(RELEASENAME) - @sed "s/^SVNVERSION.*/SVNVERSION := $(SVNVERSION)/" Makefile >$(EXPORTDIR)/flashrom-$(RELEASENAME)/Makefile - @LC_ALL=C svn log >$(EXPORTDIR)/flashrom-$(RELEASENAME)/ChangeLog + @svn export -r BASE . $(EXPORTDIR)/flashrom-$(RELEASENAME) 2>/dev/null || git checkout-index -a -f --prefix=$(EXPORTDIR)/flashrom-$(RELEASENAME)/ + @# If SCMVERSION or SCMEXTVERSION contain a slash or SCMURL contains a hash, this will explode + @sed "s/^SCMVERSION.*/SCMVERSION := $(SCMVERSION)/;s/^SCMEXTVERSION.*/SCMEXTVERSION := $(SCMEXTVERSION)/;s#^SCMURL.*#SCMURL := $(SCMURL)#" Makefile >$(EXPORTDIR)/flashrom-$(RELEASENAME)/Makefile + @# ChangeLog should be in English, but we want UTF-8 for names. + @( LC_ALL=en_US.UTF-8 svn log 2>/dev/null || LC_ALL=en_US.UTF-8 git log 2>/dev/null || echo "Unable to extract log from SCM" ) >$(EXPORTDIR)/flashrom-$(RELEASENAME)/ChangeLog + @rm -f $(EXPORTDIR)/flashrom-$(RELEASENAME)/.gitignore $(EXPORTDIR)/flashrom-$(RELEASENAME)/.gitattributes $(EXPORTDIR)/flashrom-$(RELEASENAME)/.gitmodules @echo Exported $(EXPORTDIR)/flashrom-$(RELEASENAME)/ tarball: export Index: flashrom-gitfriendly/flashrom.c =================================================================== --- flashrom-gitfriendly/flashrom.c (Revision 1145) +++ flashrom-gitfriendly/flashrom.c (Arbeitskopie) @@ -1355,6 +1355,7 @@ void print_version(void) { msg_ginfo("flashrom v%s", flashrom_version); + msg_ginfo(" from " FLASHROM_SCMURL ","); print_sysinfo(); } @@ -1362,7 +1363,6 @@ { msg_ginfo("flashrom is free software, get the source code at " "http://www.flashrom.org\n"); - msg_ginfo("\n"); } int selfcheck(void) -- http://www.hailfinger.org/

5 11

Re: [flashrom] [coreboot] Dualbios on GA-MA770-UD3
by Carl-Daniel Hailfinger 10 Aug '13

10 Aug '13

Hi Vadim, thanks for your mail. I have added the flashrom mailing list in CC: because we should develop a generic way to handle DualBIOS and similar techniques. On 09.04.2010 08:12, Vadim Girlin wrote: > I'm going to try coreboot on Gigabyte GA-MA770-UD3. > It's AMD 770 (RX780 / SB700). > > My motherboard supports hardware dual bios - with two chips on it. > I'm going to try flashing backup chip and boot from it. It seems to be > possible - I've tested it (flashing at least). Chips on this board could > be switched by changing bit 0 at undocumented register EF on LDN 7 of > IT8720. I can use slightly patched flashrom for accessing any chip I > want without any problems. And this is tested many times. > > My idea is to use backup chip for debugging - that always keeps my > chance to reboot from main bios chip. And removes the need for > desoldering etc. > > And second problem is that original bios is checking second chip - and > trying to recover it by flashing the bios from main chip on reboot? > rewriting coreboot. AFAICS this could be solved by including some > signatures etc. It seems to be easy to find out. May be someone is > working on this? > > BTW I can send the patch for flashrom - but I think that with > information I mentioned above somebody could make it much better than my > ugly hack. I hope the regs should be the same for all latest Gigabyte > MBs using IT8720/18 > It would be great if you could send that patch. It will help us make a flashrom design decision that works for all boards with multiple flash chips. By the way, some of us have good contacts at ITE, so we can ask ITE for details about the undocumented registers. Regards, Carl-Daniel -- http://www.hailfinger.org/

5 12

[RFC] Layout handling...
by Carl-Daniel Hailfinger 12 Jul '13

12 Jul '13

Hi, before we change flashrom to work with current layout requirements, we should summarize the features we need/want, and then decide how to handle the individual layout regions internally. Terms: "write strategy" describes a combination of erase+write commands with a given block size, touching some blocks. "read protected" describes a region which can not be read. "write protected" describes a region which can not be written. "write once" describes a region which can be written exactly once in the chip lifetime. If you add a feature to the list, please give it a nickname so we know which feature people are referring to. Some of the features below might not be desirable, but I want to list them anyway so we can explicitly declare them as unsupported if needed. fullwrite-unrestricted: Write a chip-sized image, no special read/write restrictions of the chip, no layout file needs to be specified. Default write case right now. fullwrite-noread: Write a chip-sized image, reading anything from the chip is not possible. Many DVD writers fall in that category. No verification, violates our reliability guarantees. fullwrite-postread: Write a chip-sized image, reading anything from the chip is only possible after write. Chips which are read-locked until a full erase/write fall in that category. Do those exist as standalone flash chips or only integrated into processors? fullwrite-partialread: Write a chip-sized image, reading is only possible in some chip regions. Only partial verification, violates our reliability guarantees. fullwrite-partialwrite: Write a chip-sized image, but writing is only possible in some regions. This is obviously a conflict unless the image has the same contents as the chip in the write-protected regions and there is a possible write strategy for the whole image which does not touch the write-protected regions. Should flashrom always refuse this scenario, or only refuse it in case of conflicts? partialwrite-unrestricted: Write only parts of an image, the rest of the chip contents is kept, no special read/write restrictions. partialwrite-partialread: Write only parts of an image, the rest of the chip contents is kept, reading is only possible in some chip regions. If no read-protected regions are written and a suitable write strategy exists, should flashrom warn? If a read-protected region is written, should flashrom warn/refuse due to reliability requirements? partialwrite-partialwrite: Write only parts of an image, the rest of the chip contents is kept, writing is only possible in some chip regions. If no write-protected regions are written and a suitable write strategy exists, should flashrom warn? flashrom will refuse to write a write-protected region. fullread-unrestricted: Read the full chip, no special read restrictions of the chip. partialread-unrestricted: Read only parts of a chip, no special read restrictions of the chip. partialread-partialread: Read only parts of a chip, some regions are read-protected. flashrom should refuse to read any read-protected regions. partialread-imagefiller: If only parts of a chip are read and the read image has full chip size, what should be used as filler for unread regions? 0x00 or 0xff? partialread-layout-imagesize: If only parts of a chip are read, should the read image still have full chip size with all read regions filled in at the respective locations? partialread-layout-split: If only parts of a chip are read, should it be possible to write each region (or a combination thereof) to a separate image file, and would that mapping be specified in the layout file? partialwrite-layout-split: If only parts of a chip are written, should it be possible to collect each part of the new image from a separate image file, and would that mapping be specified in the layout file? readwrite-protection-time: Which read protection and write protection times exist? Temporary lock until unlock, temporary lock until chip soft reset, temporary lock until chip/programmer hard reset (powerdown or reset line), permanent eternal lock. readwrite-protection-type: Which read protection and write protection types exist? Programmer lock (e.g. Intel SPI), hardware chip lock (WP pin), software chip lock (chip command). readwrite-protection-interaction: How should we express this situation: A region is write-locked with a software chip lock, but to remove that software chip lock, a hardware chip lock has to be disabled first, then the software chip lock can be disabled. partialaccess-crash: Some regions in the chip are really off-limits and will cause an unrecoverable error (system crash) when accessed (read or write). That seems to be the case for some EC/flash interactions. Comments? Any forks of flashrom (e.g. chromium) which need infrastructure features not mentioned above? Regards, Carl-Daniel -- http://www.hailfinger.org/

5 12

Re: [flashrom] [PATCH] automatically round address ranges requested from physmap_common to page boundaries
by Stefan Tauner 31 Dec '12

31 Dec '12

On Mon, 30 May 2011 02:45:44 +0200 Stefan Tauner <stefan.tauner(a)student.tuwien.ac.at> wrote: > this patch also changes the display width of all addresses in physmap.c to 16 hex characters. > > FIXME: what about unmappings? > munmap is safe. > djgpp's __dpmi_free_physical_address_mapping: unknown. > DirectHW's unmap_physical: unknown. > > FIXME: jakllsch suggested using PRIx64 instead of x, because it's more portable FIXME: in the case we can not map and 'mayfail' is true we should return ERROR_PTR instead of ERROR_PTR + diff -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner

1 1

[PATCH] Enable VX855 chipset
by John Schmerge 20 Oct '12

20 Oct '12

This patch adds support for the Via VX855 chipset

4 8

VIA VT6421A
by Magyar Szabolcs 30 Sep '12

30 Sep '12

Hi, I post a success story about a VIA VT6421A based SATA/PATA PCI controller. The flashrom can probe/read/write successfully the onboard PMC Pm49FL004 chip. I downloaded the patch from http://patchwork.coreboot.org/patch/3214/. Just one thing... "BAR type unknown..." I don't known the meaning, but it worked for me without errors. Please add the patch from above to the trunk. I attached a verbose probe output too. flashrom v0.9.3-r1362 on Linux 2.6.38-std220-i586 (i686), built with libpci 3.0.0, GCC 4.3.2, little endian flashrom is free software, get the source code at http://www.flashrom.org Calibrating delay loop... OK. Found "VIA VT6421A" (1106:3249, BDF 00:0a.0). BAR type unknown, please report a bug at flashrom(a)flashrom.org === This PCI device is UNTESTED. Please report the 'flashrom -p xxxx' output to flashrom(a)flashrom.org if it works for you. Please add the name of your PCI device to the subject. Thank you for your help! === Found chip "PMC Pm49FL004" (512 kB, LPC, FWH) on atavia. Reading flash... done. Best regards, Szabolcs Magyar P.S.: Sorry for my english.

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flashrom August 2011