forums.ps2dev.org

hnaves · Joined: 03 Feb 2009 Posts: 30

I am a new member of this forum and I currently studying how the PSP boot process works. I think the best way to learn is by doing experiments, so, I downloaded the booster's IPL SDK. I am very curious about the pre-IPL code, and I tried to dump it. But (unfortunately) I could not use the SDK because I don't have a Jigkick battery (and I can't turn mine a Jigkick one, because my motherboard is a TA-085v2).

My question is: does anybody have a dump of the pre-IPL code for the PSP slim 2000 (motherboard TA-085v2)? I have already saw all the posts related to this subject, including:

1)http://forums.ps2dev.org/viewtopic.php?t=11586
2)http://forums.ps2dev.org/viewtopic.php?t=8850

But no one posted a dump.

My other question is: Is it possible to simulate the PSP cold boot process? Maybe by using a smart trick to overcome the changing memory mapping of the address 0xbfc00000 while doing a soft reset...

Thanks in advance...
And yes, I know that I must get hands on a Jigkick as soon as possible...

Torch · Joined: 28 May 2008 Posts: 842

I couldn't get moonlight's custom 1.50 IPL sample+dumper working on the Slim though TimeMachine. I successfully dumped it on my friends Phat PSP by installing it on the NAND like the sample said.

hnaves · Joined: 03 Feb 2009 Posts: 30

Hi Torch, thank for your reply. Is it possible to post the file (the dump) here? Or it is against the rules of this forum? I saw on other posts that the dump from the slim and phat are quite the same, with very few differences...

moonlight · Joined: 26 Oct 2005 Posts: 567

The differences are in some hardware addresses, but the code itself is identical, with functions being exactly at same offset.

Torch · Joined: 28 May 2008 Posts: 842

moonlight · Joined: 26 Oct 2005 Posts: 567

Torch · Joined: 28 May 2008 Posts: 842

hnaves · Joined: 03 Feb 2009 Posts: 30

Very Nice! Is it the custom IPL from moonlight?

If I got it right, the "installer/ipl.h" contains a custom IPL code that will be flashed into my PSP by the cipl_flasher app. The custom IPL code will copy the pre-IPL code to 0x440EF000[iplboot/iplboot.c] and then to 0x483E0000[patch_main/main.s](that will be later remapped to 0x883E0000) and then perform a normal boot, right?

But I am little worried, because the cipl_flasher app needs the official 1.50 IPL code to work (it uses the 150.PBP updater file) and my PSP's firmware version is "5.00 M33". The original post http://forums.ps2dev.org/viewtopic.php?t=8850 says nothing about firmwares above 3.XX. So, maybe my PSP will brick if I flash that custom IPL, and I don't have the JigKick battery to "unbrick" my PSP again.

If I am not asking too much, could someone get the 4Kb of the dumped pre-IPL using this app?

hnaves · Joined: 03 Feb 2009 Posts: 30

Hehehe, sorry for repeating
(you already said that It did not work on TimeMachine :-)

hnaves · Joined: 03 Feb 2009 Posts: 30

The actual dump for my model (pre-IPL dumped using prxtool)

hnaves · Joined: 03 Feb 2009 Posts: 30

OMG! Sorry jbit for making you edit my posts when you should be working on coolz0r code! I promise I won't post copyrighted material again!!!

hnaves · Joined: 03 Feb 2009 Posts: 30

One question: is it legal to post the dump of the pre-IPL?

SilverSpring · Joined: 27 Feb 2007 Posts: 115

cheriff · Regular Joined: 23 Jun 2004 Posts: 262 Location: Sydney.au

jbit · Posted: Sat Feb 28, 2009 4:02 am Post subject:

Edited posts, as stated above posting stuff like this is against the forum rules, regardless of whether it's legal in certain countries or not.
Also any links to such material will be removed too, repeat offenders will be banned.
Asking for it will be considered the same as asking for ISO images of games or ROMs for emulators.

hnaves · Joined: 03 Feb 2009 Posts: 30

sorry for that