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#rockbox log for 2017-02-13

00:01:14ComputingCometohh builtin is there a way to run donkey kong mame on rockbox?
00:01:23pamaurykfogel: most ereaders are based on linux
00:01:34pamauryjailbreaking seems like a better solution
00:01:43pamauryand there are plenty of jailbreaks for ereaders
00:03:21kfogelpamaury: *nod* A jailbreak isn't quite the same as running an top-to-bottom free OS, but it's a place to start anyway. Thanks.
00:04:54pamaurykfogel: if the devices run a linux, for which you have the source and that you can jailbreak, I don't see what non-free. You can just remove all the non-free part. Of course you still have the problem of replacing all the binary modules but that's a huge work anyway, independently of the approach
00:06:17kfogelpamaury: Yes. I suspect that just such a binary module is what drives the screens, so the device would be pretty useless without that work being done. I'll look into it some more; I don't have time to do much of the hacking myself, unfortuately.
00:07:28__builtinComputingComet: not as far as I know
00:08:02__builtinwe don't have a MAME port, first of all
00:08:48__builtinthough I suppose I could port SDLMAME if it weren't for the licensing issue
00:09:49 Part kfogel ("Ex-Chat")
00:11:05__builtinwait a second...
00:11:09__builtinthey recently relicensed
00:12:29ComputingCometso its possible?
00:13:02__builtinno, not yet at least
00:13:57__builtinit's all GPLv2 or later now
00:14:35__builtinit might be possible though
00:16:36__builtinhmm, it's all C++ though
00:19:08ComputingComethow does the packbox/pacman work
00:19:34__builtinpacbox is specialized to emulate only a pacman machine
00:21:18ComputingCometand its been done for dk on ipodlinux put it so old i dont use it on my ipod
00:21:46__builtinipodlinux has nothing to do with rockbox
00:22:02ComputingCometim just saying
00:22:56__builtinComputingComet: what is it that you want to do again?
00:23:03__builtinplay Donkey Kong or run MAME?
00:23:15ComputingCometDonkey Kong
00:26:13__builtinwell, you can probably find a Gameboy version of it and dump the ROM yourself ;)
00:30:15 Quit skapazzo (Quit: leaving)
00:33:28ComputingCometi tried it lags to all hell
00:35:32__builtinwhat device do you have?
00:35:47ComputingCometipod 5
00:35:51ComputingCometipod video
00:36:35ComputingCometand and a fuze
00:36:36__builtinthat's one of the slowest devices we support, at least in terms of # of cores*CPU frequency/screen size
00:37:06__builtinyou'll have much more luck with the fuze, I'd wager
00:38:53 Quit bertrik (Quit: leaving)
00:47:08 Quit pamaury (Ping timeout: 264 seconds)
00:50:46__builtinargh great
00:50:58__builtinnow xworld freezes up randomly
00:52:42__builtinand of course it only happens on target, so I can't debug without scattering a million splash()es everywhere :(
00:56:23ComputingCometwhats xworld
00:57:08__builtinit's a plugin that emulates the game "Another World"
00:57:40ComputingCometohh dont have it
00:58:03__builtinwhat version of rockbox are you running?
00:59:18 Quit xorly (Ping timeout: 255 seconds)
00:59:56__builtinsorry, did you mean that you don't have the 'xworld' plugin, or the game 'Another World'?
01:00:05ComputingCometxworld plugin
01:00:25__builtinhmm, that doesn't make sense then
01:00:34__builtinare you running the release version?
01:00:55__builtinthat explains it... our last "release" is horribly out of date
01:01:09ComputingCometi did it cuz stable
01:01:12***Saving seen data "./dancer.seen"
01:02:05__builtinthere's no reason for you not to run the development builds
01:02:20 Quit ender` (Quit: History is a set of lies agreed upon.— Napoleon Bonaparte)
01:02:24__builtinheck, they're probably more "stable" than the release
01:02:49__builtinthere's a bazillion bug fixes and new features that you're missing out on, too
01:03:13__builtinand like 30 new game plugins
01:03:42ComputingCometjesus im installing now
01:03:46 Join pamaury [0] (~pamaury@rockbox/developer/pamaury)
01:04:01ComputingCometand installed
01:04:33ComputingCometso many games
01:04:35ComputingCometso many
01:05:01*__builtin apologizes
01:05:10ComputingCometnow pacbox does not work incompatible version
01:05:17__builtinyou need to reboot
01:05:25ComputingCometi did
01:06:09ComputingCometill do it again
01:07:02__builtinare you sure? that shouldn't happen if you did
01:07:32ComputingCometok it works now i cuz i fucked up reboot somehow
01:08:39__builtinmost of the new games are my fault
01:09:50__builtinactually, all of them are, I think
01:10:10ComputingCometso what dos files do i need for xworld
01:10:56__builtinwould you mind helping me test if this bug I'm seeing is reproducible?
01:12:31ComputingCometwhat do i do i have the dos files for another world and out of this world
01:13:10__builtinextract them to /.rockbox/xworld/
01:13:21__builtincreate that folder if it doesn't exist
01:13:29ComputingCometall of them even exe
01:13:42__builtinyou only need the MEMLIST.BIN and BANK01-BANK0D
01:14:37ComputingCometdo i use out of this world or another world files
01:14:50__builtineither one will work
01:15:02__builtinas long as it has those files
01:15:17ComputingCometok now about this error what do i need to do
01:15:28__builtinwhat error?
01:15:37ComputingCometi mean bug
01:15:39ComputingCometwhat bug
01:15:55ComputingCometand i got a string error
01:15:55__builtinstart xworld and choose "Start New Game"
01:16:04__builtinthat's just a warning, don't worry about it
01:16:38ComputingCometwhen i clicked start new game i get these symbols and some text
01:18:00ComputingCometi did the codes now its starting
01:18:17ComputingCometi got to title screen
01:18:22ComputingCometand now it breaks
01:18:40__builtintell me what else it says
01:19:26ComputingCometincorrect CPI mode in mutex_lock (0x12!=0x1f)
01:19:54ComputingCometpc:00074464 sp:000007b0
01:20:03__builtinthat explains a lot
01:20:15__builtinwhat device is this?
01:20:22ComputingCometa: 03f83318
01:21:23ComputingCometa: 03f82914
01:21:38ComputingCometa: 03f929dc
01:22:00ComputingCometa: 03f83188
01:22:01ComputingCometbt end
01:22:04ComputingCometthats all it says
01:22:11__builtinok, thanks
01:22:15ComputingCometim gonna reboot now
01:22:42ComputingCometis there a way to make it work i wanted to platy
01:23:16__builtinI think I know what the problem is
01:23:58__builtina recent commit added CPU mode checks to the kernel (3e73866)
01:25:43__builtinjhMikeS (logs): see above ^
01:26:12__builtinjhMikeS is the author of that commit
01:26:18 Quit pamaury (Ping timeout: 255 seconds)
01:28:01__builtinthat commit doesn't really "cause" the crash you're seeing, though
01:28:26__builtinbut it just puts in sanity checks for the real issue
01:28:53ComputingCometwhats all this sgt stuff
01:29:24__builtinthe initials of the author of that game collection
01:29:41__builtin(S.G. Tatham)
01:30:01ComputingComet i see this game has one level
01:30:16ComputingCometohh its random
01:30:19ComputingCometim stupid
01:31:29__builtinok, just checked: that commit does indeed break xworld
01:32:06ComputingCometwhen does it get into dev patch
01:32:29ComputingCometwhen will i be able to install it 2 play
01:32:52__builtinI can build you a version right that should work
01:33:02ComputingCometthat would be amazing
01:33:23__builtinkeep in mind that it's going to be slow as heck on the video
01:34:23ComputingCometwhen i get my fuze back ill be on that
01:35:36__builtinI actually don't have to build it... should be what you need
01:36:31ComputingCometand just take the xworld.rock
01:36:40__builtinno, you need to install the whole zip
01:36:44ComputingCometidk what it is why
01:36:58ComputingCometnvm what i said
01:37:00ComputingCometi mean why are closely tied to the core
01:37:24__builtinthey won't work if there's a version mismatch
01:37:58ComputingCometok rebooting
01:37:59ComputingCometand ill brb
01:38:25ComputingCometidk what it is about this i have a phone i can do all this theres just something about doing this on a mp3 player thats fun not being connected to everything
01:41:45__builtinby the way, the real gems of sgt-puzzles, in my opinion at least, are Cube, Net, Map, and Untangle
01:42:57 Quit MrZeus1 (Ping timeout: 255 seconds)
01:43:00 Join Bilgus_ph [0] (4cf32773@gateway/web/freenode/ip.
01:43:02ComputingCometit runs good actually im after the cutscene and its fine
01:43:16__builtinhmm, that's good
01:44:28Bilgus_phjohnb2: yes it is ready, though only a firmware with boot data will boot from the sd card and for now you will still need to disable the rooot with Mihails second patch ftm
01:44:30ComputingCometnow it just get to the code ldkd and it just keeps doing the same thing over and over again
01:45:15__builtinyou need to swim upwards
01:45:18ComputingCometi am
01:45:32ComputingCometatleast im trying
01:45:52__builtinthis game isn't supposed to be easy ;)
01:46:17ComputingCometdo i scroll or click up im trying both
01:46:37__builtinhold MENU
01:46:53ComputingCometstill just float down
01:47:25ComputingCometwhats the max frame rate?
01:47:58 Join _mt_ [0] (~MT@2601:482:4402:7b60:4e2:fd42:809:89e5)
01:48:05__builtinit varies, usually around 12 or so
01:48:19ComputingCometyeah im just a solid 12
01:48:25ComputingComethave not gone to 11
01:51:54ComputingCometjesus to many bug guys
01:52:19__builtinenjoy! :P
01:53:18 Quit cc___ (Ping timeout: 255 seconds)
01:53:49ComputingCometsince release have you guys updated imgviewer
01:57:31ComputingCometnvm a
01:57:38ComputingCometand why does the mpegplayer not work
01:59:45Bilgus_phlast I knew it did
02:00:09ComputingCometi tried in release and it did not work it just stayed black forever
02:00:20Bilgus_phdid you rename your old install and copy the new one to your device?
02:01:16ComputingComet no i deleted the old install
02:01:39Bilgus_phor rename .rockbox to .rockbox.old then copy .rockbox from the zip file to device
02:01:50Bilgus_phoh ok same difference
02:02:43ComputingCometevery update ive tried on the release on the dev and on the dev you gave me when i try and play it i keep black screen
02:02:47Bilgus_phconfused you tried it in release or dev?
02:04:14Bilgus_phI'm not builtin but idk either way you said It didn't work in your original install either?
02:05:57ComputingCometsorry was not paying attention to names ive tried it on every version dev and release im currently on and install builtin gave me that runs xworld properly
02:07:34Bilgus_phi'm not sure of the particualrs of mpeg player i'd have a look at the manual it probably has limited file support (or format support)
02:09:42 Join jhMikeS [0] (
02:11:31Bilgus_phjhMikeS I have a patch up to remove some unused fuctionality from bootloaders (O_CREAT) specifically I'm not particularly fond of the implementation atm any ideas to make it cleaner?
02:16:50ComputingCometbeep boop
02:17:04jhMikeSBilgus_ph: it's on gerrit?
02:17:42Bilgus_phyea #g1560
02:17:44fs-bluebot3Gerrit review #1560 at : 3Remove unneeded fuctionality from bootloaders by William Wilgus
02:18:03Bilgus_phill be back to my other acct in a bit
02:18:07jhMikeSBilgus_ph: there is at least one bootloader that writes new files
02:19:17Bilgus_phoh yea? maybe I should just focus on bootloader that won't compile anymore like the clipV1
02:19:26 Quit TorC (Ping timeout: 240 seconds)
02:19:28 Quit __builtin (Ping timeout: 245 seconds)
02:19:56 Join __builtin [0] (~xray@rockbox/developer/builtin)
02:20:34jhMikeSgigabeat_s can extract tar files (it's functionality that comes in handy upon first installs sometimes)
02:21:38Bilgus_phI kinda wish to separate the functions to make it easier for the unused functions to be stripped I think, Without removing write It knocks off like 1k so might be enough
02:21:44jhMikeSthe truth is though, there isn't a huge amount of code in general dedicated to creating a new file
02:22:09Bilgus_phi think it was 2.5k compiled
02:22:22__builtinjhMikeS: I take it that certain blocking kernel functions shouldn't be called in an IRQ context, right?
02:23:16 Join TorC [0] (~TorC@fsf/member/TorC)
02:23:17jhMikeSyou must've taken out way more than what I see on gerrit
02:23:44jhMikeS__builtin: never. you can poll semaphores and queues with TIMEOUT_NOBLOCK though
02:24:30__builtinok, I'll fix xworld then
02:24:42jhMikeS__builtin: if it blocks, no ISR because a thread is the only thing that blocks
02:25:17Bilgus_phfat_time and is_diacritic hits 1kb and ocreate calls create_stream_internal( which is another 2.5k
02:26:52Bilgus_phthats after compression btw
02:27:24 Quit Bilgus_ph (Quit: Page closed)
02:30:12ComputingCometthis game is bs
02:31:09 Quit amiconn (Quit: No Ping reply in 64 seconds.)
02:31:29jhMikeS__builtin: also fiq on arm is totally forbidden from interacting with any thread stuff. audio callbacks should never call anything thread related
02:32:18 Join amiconn [0] (~amiconn@rockbox/developer/amiconn)
02:32:32jhMikeSBilgus_ph: create_stream_internal is 2.5K? wtf
02:34:11*jhMikeS checked an elf for fuze v2 and it's 204 bytes
02:36:50fs-bluebotBuild Server message: 3New build round started. Revision 0a9f717, 255 builds, 17 clients.
02:37:06__builtinalright, this last commit *should* fix xworld
02:37:42ComputingCometi thought you fixed it already
02:38:46__builtinwell, that wasn't a "fix" that I gave, just an earlier version without the sanity checks
02:38:49jhMikeSBilgus: I guess that + fat_create_file is 772 bytes
02:38:58__builtinso in a sense it was still broken, but it just didn't crash because of it
02:39:16ComputingCometso do i update
02:39:27jhMikeSBilgus: I'd suggest reducing the number of cache buffers is you want low-hanging fruit for a bootloader
02:39:49__builtinComputingComet: there won't be any visible benefit
02:42:25ComputingCometits having draw errors and i did not even update
02:44:38ComputingCometi just started new game its fine
02:46:12fs-bluebotBuild Server message: 3Build round completed after 562 seconds.
02:46:13fs-bluebotBuild Server message: 3Revision 0a9f717 result: 2 errors 0 warnings
02:48:35BilgusI'd assume they would compress pretty well though wouldn't they?
02:51:10Bilguson clip+ with the patch on gerrit [INFO] Bootloader size: 77508 bytes and with only the conditional on create file removed [INFO] Bootloader size: 81844 bytes
02:51:21Bilgus(prior to compression)
02:51:24 Join PurlingNayuki [0] (~Thunderbi@
02:52:25Bilguspacked: [INFO] Packed bootloader size: 43153 bytes vs [INFO] Packed bootloader size: 45721 bytes
02:52:50__builtinComputingComet: what do you mean by "draw errors"?
02:52:53ComputingCometyes i got a laser gim
02:53:13Bilgusis there something else funky going on with AMS? the clipV1 is even more
02:55:52 Quit PurlingNayuki (Ping timeout: 260 seconds)
02:56:58jhMikeSBilgus: it's just the image size that matters? not the bss section too?
02:58:52BilgusWell I assume we have the whole ram minus the dual-boot function & UCL unpack function
02:58:52Bilguss which is like 300 bytes so no its just the image size that is the issue
02:58:59jhMikeSbtw, they'll compress to 0 because bss isn't actually part of the image itself
02:59:12Bilgusfigure we compress the OF and what is left is the room we have for RB
03:01:16***Saving seen data "./dancer.seen"
03:02:36Bilgusfigure its not just Create file its, also create_stream_internal and what ever ancillary functions those two call as well
03:03:07jhMikeSperhaps just direct the bootloader config to not define O_CREAT in fcntl.h and then it would error on any attempt to use it
03:03:31BilgusI'm thinking maybe a separate file handling implementation for boot loader would be the cleanest
03:04:30Bilgussure that would be inline with what I have atm undef O_CREATE but as you were saying there are targets that do create files
03:04:34jhMikeSnontrivial and a pita to keep maintained in step
03:04:47BilgusIkr lol
03:05:00jhMikeSBilgus: keep it in the target's config. most aren't that tight. some don't matter at all
03:05:50Bilgusok so do something like NO_O_CREAT_BOOTLOADER
03:05:55jhMikeSif some other thing is defined, then block #define O_CREAT
03:06:40Bilgusjust blocking O_CREAT won't do it ill have to still ifdef out the actual routine but sounds good
03:07:21jhMikeSor maybe FILESYS_CONFIG_LEAN ? block rename(), all create and write functionality, and some other functions that are likely unneeded
03:07:54jhMikeSoh, mkdir(). maybe even don't include dir functions at all?
03:08:21jhMikeSa la WIN32_LEAN_AND_MEAN ?
03:08:36BilgusMkdir gets removed as unused code so not a big deal there
03:08:55jhMikeSdo you use ffunction-sections?
03:09:20BilgusI didn't look in the default make file
03:10:27Bilgusill try it and see IDK though since its technically in a function not standalone
03:11:24jhMikeSwe should probably use that anyway. I think the reason it wasn't was before eabi, it would generate long calls. that may no longer be the case
03:12:52jhMikeShmmm...looks like it is there for a bootloader build
03:13:58Bilgusyep EXTRA_DEFINES
03:14:48Bilgusthe problem is that create is in with open so its a valid codepath
03:16:08jhMikeSdefine O_CREAT as 0 and it will be optimized out
03:17:39jhMikeSI guess FF_CREAT too. if the code is unreachable the compiler will remove it
03:20:08Bilgusyep nice that makes it cleaner :)
03:20:59Bilgusso maybe activate it with BOOTLOADER_READ_ONLY_FS
03:22:26Bilguswell I guess thats not true
03:22:57jhMikeSshould probably dump FF_CREAT and FF_EXCL anyway. they don't get stored and they aren't used in deep code. they were just put there to pass flags in a single parameter. doing that would give me a couple bits back for other functions
03:22:59BilgusIf we removed all file write functions it would be
03:24:04jhMikeSif you aren't calling the write functions I guess the -ffunction-sections will dump them anyway
03:24:27Bilgusyeah as long as they are separate..
03:26:02jhMikeSI was going to change it for you so there's only O_CREAT to worry about. I don't need the other junk.
03:26:57Bilgussounds logical
03:30:28Bilgusin that case i'll do separate commits for each
03:31:03*jhMikeS was just going to edit it up to pass oflag straight to the inner function
03:33:21 Quit Bray90820 (Ping timeout: 276 seconds)
03:34:16Bilgussounds good but I'll put it on your commit and the other on main
03:47:52 Quit ZincAlloy (Quit: Leaving.)
03:48:19 Quit ComputingComet (Read error: Connection reset by peer)
04:00:23jhMikeSBilgus: pushed it to g1561 for the moment
04:00:24fs-bluebot3Gerrit review #1561 at : 3Remove FF_CREAT and FF_EXCL flags in from file code. by Michael Sevakis
04:00:36Bilguscool thanks
04:14:28Bilgusworked perfectly
04:15:17Bilgusclip v1 fits in the fw file again and should be enough left over to allow me to do external boot + bootdata in it
05:01:18***Saving seen data "./dancer.seen"
05:29:21 Join [Saint] [0] (~sinner@rockbox/staff/saint)
05:48:44 Quit alexweissman (Remote host closed the connection)
06:15:56 Join alexweissman [0] (
06:17:19 Quit _mt_ (Ping timeout: 255 seconds)
06:42:45 Join TheEaterOfSouls [0] (~chatzilla@unaffiliated/theeaterofsouls)
06:42:54TheEaterOfSoulsHey guys, not sure what commit might've caused this as I haven't updated since August when the new USB driver was introduced but I just installed the latest build on my Clip Zip and both FLAC and MP3 randomly skip when playing (both on internal and external storage). Anyone else having this issue?
06:51:38fs-bluebotBuild Server message: 3New build round started. Revision dc22522, 255 builds, 17 clients.
06:52:23[Saint]TheEaterOfSouls: can you verify this with a clean config?
06:53:03TheEaterOfSoulsI will do so
06:53:26[Saint]Please backup your config to config.cfg.bak and then remove the original, and tell me if you can reproduce.
06:56:45 Quit [7] (Ping timeout: 256 seconds)
06:57:02 Join TheSeven [0] (~quassel@rockbox/developer/TheSeven)
06:59:54 Quit furrywolf (Ping timeout: 245 seconds)
07:00:29TheEaterOfSoulsDidn't bother backing it up haha but I am no longer having the issue, sorry.
07:01:22***Saving seen data "./dancer.seen"
07:01:42fs-bluebotBuild Server message: 3Build round completed after 605 seconds.
07:01:43fs-bluebotBuild Server message: 3Revision dc22522 result: 4 errors 0 warnings
07:10:41[Saint]TheEaterOfSouls: damn, that's mildly annoying.
07:10:56[Saint]If you can get it to happen again...I would appreciate seeing the config.
07:11:15[Saint]I mean, I'm happy your issue is fixed, but I would love to have known the trigger.
07:11:45TheEaterOfSoulsI will change settings back one by one and let you know if it happens.
07:12:37TheEaterOfSoulsI guess I just assumed something to do with config handling was changed, I haven't looked at all of the commits since August lol.
07:16:10[Saint]That would be several hundred.
07:54:04 Quit alexweissman (Read error: Connection reset by peer)
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07:59:00 Quit alexweissman (Ping timeout: 255 seconds)
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08:01:40amiconn__builtin: Fixed (hopefully)
08:11:11 Quit TheEaterOfSouls (Quit: ChatZilla 0.9.93 [Firefox 51.0.1/20170125094131])
08:39:27 Join ender` [0] (
08:59:42 Quit Horrorcat (Quit: Gateway shutdown)
09:01:23***Saving seen data "./dancer.seen"
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09:02:20 Join Horrorcat [0] (129994c4c6@unaffiliated/horrorcat)
09:43:21 Quit xorly (Ping timeout: 256 seconds)
09:52:39 Join PurlingNayuki [0] (~Thunderbi@
09:57:21 Quit PurlingNayuki (Ping timeout: 264 seconds)
10:10:56 Join elensil [0] (~edhelas@2001:1c02:1903:d800:c4af:b9a9:eafa:cc75)
10:13:49 Join MrZeus [0] (~MrZeus@
10:55:16 Join clipzip [0] (51f32cb7@gateway/web/freenode/ip.
10:55:21clipzip is down?
10:56:34[Saint]If you can't get to it...yes.
11:01:25***Saving seen data "./dancer.seen"
11:03:50 Join skapazzo [0] (~skapazzo@
11:06:17clipzipstrange, because is working
11:06:34[Saint]Not particular.
11:06:39[Saint]Different servers.
11:07:00[Saint]You'll likely find the forums down too.
11:07:13[Saint]If they're not, then there's some weird shit going on.
11:07:30clipzipthey are down too
11:07:33clipzipthanks for the information
11:07:43[Saint]de nada.
11:20:02 Join xorly [0] (~xorly@
11:34:54 Join ZincAlloy [0] (~Adium@2a02:8108:8b80:1700:1d24:5e5:1418:9a28) took too long to respond
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12:02:03 Join pamaury [0] (~pamaury@rockbox/developer/pamaury)
12:05:56pamauryBilgus: I've seen you work to reduce bootloader size. I am not sure I'm a big fan of it, especially removing nontrivial functionality like file writing. It's quite error-prone and obscure
12:11:33[Saint]yeah, in my opinion you need a _damn_ good reason to touch bootloaders.
12:11:59[Saint]especially when neither size nor boot time is an active concern.
12:13:47pamaurywell size is a concern on the clipv1 apparently
12:13:49 Quit ZincAlloy (Quit: Leaving.)
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12:15:05pamaurythe question is: is it worth adding to the ifdef hell even more just to add this functionality to the clipv1 ? It's an old target now, I know people love it but that's a race that will eventually be lost, the bootloader size is only ever increasing over time and we are already a few bytes away from the maximum on those targets
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14:21:41Bilgusactually the clipV1 won't compile bootloader at head
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14:30:55Bilgusoh and a slow AF dump of the themes site
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14:42:27Bilgus@ Pamaury the other options I thought of were a separate file handling routine for bootloader or splitting open( into standalone functions, the former as jhMikeS pointed out makes upkeep a pita, and the latter strays away from posix. Plus I'm sure it isn't just the clipV1 that won't compile bootloader at head
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18:52:39billyogatim getting an ERR_CONNECTION_TIMED_OUT on both and has anyone else noticed this?
18:58:40billyogatwell, they are working now
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22:33:07BilgusjhMikeS, Pamaury: see what you think about this g#1563
22:33:08fs-bluebot3Gerrit review #1563 at : 3Remove O_CREAT codepath when O_RDONLY is the specified open argument by William Wilgus
22:34:43pamauryBilgus: see with jhMikeS, does that actually save anything ? the compiler would need to do global optimization to notice
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22:49:44dyspamaury: trying to get FWIMAGE −−descramble-> −−bfin_boot-> ELF −−adi-ldr-> −−scramble-> FWIMAGE to work
22:50:08dyslooks like the ldr tool expects symbols dxe_init_start and dxe_init_end, otherwise it won't generate INIT blocks
22:51:59pamaurydys: it almost certainly won't work
22:52:20pamauryan ELF file cannot really encode a DXE perfectly (at least not in general)
22:52:40dysi guess that's where the magic symbols come in?
22:52:57pamaurywhat we usually do is that we write a patching tool that takes a fwimage and modifies it directly
22:53:09pamauryso that you don't take the risk of loosing any information
22:53:20dysI see
22:55:38pamauryhow do you plan to patch the firmware ?
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22:56:24dysthere's a TEST/CALIBRATION tool you can boot into with a secret key combo
22:56:48dysI could clobber it with my own code, I guess
22:57:04pamauryis it in it's own elf ? ie is it a separate DXE ?
22:57:13dysno, it's part of the big elf
22:58:03pamauryah, that makes it more tricky, especially since the address can change with every firmware
23:00:09pamauryyou could also simply add more code to the binary (at the end of the big DXE) and patch one jump in the test/calibration tool to jump to it ? That can work if the OF jumps early to this code and doesn't overwrite this added code
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23:02:58dysinjecting a second init DXE between the original init DXE and the application DXE might also be an option
23:03:33dysthat way we get DRAM and stack initialized and can boot into the application by simply returning to the boot rom
23:03:54pamauryyeah but you take the risk of bricking if your code does not return to boot rom for some reason
23:04:20pamaurydo you have a simple way to overwrite the flash ?
23:05:25dysmy only attempt at it resulted in a bricked unit… maybe i'll take the noleads flash off with hot air on the bricked unit and trying to flash it out-of-circuit
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23:11:36dysIf I can resurrect it, it might make a great prototyping jig
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23:24:10lebelliumthank you Vortex...
23:27:08 Quit TheLemonMan (Quit: "It's now safe to turn off your computer.")
23:27:49lebelliumHe wanted his own paypal button
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23:32:43__builtinlebellium: hmm?
23:33:08Bilgus_phPamaury & jhMikeS it allows the compiler to optimize it out but unfortunately is not in compliance with Posix so disregard :/
23:36:20lebellium__builtin: if you didn't follow the story, you should start reading,51139.0.html
23:36:57lebelliumthey guy understood the whole spirit of rockbox
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