Hello again, I mapped the various device identifiers for current XMC chips according to the datasheets. The Manufacturer ID for XMC (XMC_ID) appears to be the same as ST25P (ST_ID). First byte of device ID is memory type, second byte of device ID is memory size.
#define XMC_ID 0x20 /* same as ST_ID */ #define XMC_XM25QH256B 0x6019 #define XMC_XM25QH128A 0x1708 #define XMC_XM25QH128B 0x6018 #define XMC_XM25QH64A 0x7017 #define XMC_XM25QH64B 0x6017 #define XMC_XM25QH32B 0x4016 /* 0x6016 for QPI mode */ #define XMC_XM25QH16B 0x4015 #define XMC_XM25QH80B 0x4014 #define XMC_XM25QH40B 0x4013 #define XMC_XM25QU256B 0x7019 #define XMC_XM25QU128B 0x5018 #define XMC_XM25QU64A 0x3817 #define XMC_XM25QU64B 0x5017 #define XMC_XM25QU40B 0x5013 #define XMC_XM25QU20B 0x5012 Here's the entry flashchips.c for XM25QH128A https://pastebin.com/XWJbFsJA I don't want to mess with my only BIOS chip at the moment so I ordered some spare XM25QH128A chips from Aliexpress. Once they arrive, I'm going to try to test them with various functions (PREW) and report back. Cheers! > Hello, > > I've recently got a new laptop from Acer (Predator Helios 300) and I > tried to dump its BIOS from a separate PC running Kali linux with > flashrom v1.1. I used a BusPirate SPI programmer and a SOIC-8 clip on > the BIOS chip after carefully removing (clipping) it from the mobo. > > Unfortunately the chip was not recognized, and the process failed to > read anything. I tested the connections by placing a spare Winbond chip > into the clip, and it read perfectly fine. > > The laptop BIOS chip was labeled "XMC QH128AHIG" I did some googling for > this name and apparently there are some new SPI NOR Flash chips on the > market by a chinese company called XMC. My specific chip was actually > called "XM25QH128A", but there are whole series available. > > Datasheet for my chip: > http://www.xmcwh.com/cn/Uploads/2019-08-26/5d63754eed501.pdf > > Product pages: > http://www.xmcwh.com/index.php?s=/cms/list/61.html > http://www.xmcwh.com/index.php?s=/cms/list/62.html > http://www.xmcwh.com/index.php?s=/cms/list/63.html > > > Flashrom bus pirate log: > https://pastebin.com/c2c2tmj0 > > > Regards, > D > _______________________________________________ > flashrom mailing list -- flashrom@flashrom.org > To unsubscribe send an email to flashrom-le...@flashrom.org > _______________________________________________ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
