Hi, Geert! Vignesh used to review CFI code, maybe he can intervene. I've never worked with CFI, but I can try to help. I'll need more debug data though. On 3/20/23 16:43, Geert Uytterhoeven wrote: > Add a device node for the Spansion S29GL512N NOR FLASH on the Marzen > development board. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > --- > Although the S29GL512N is a CFI FLASH, using "cfi-flash" instead of > "mtd-rom" does not work: > 1. Probing fails with "physmap-flash 0.flash: map_probe failed", I would first try to understand why the probe fails. > 2. The kernel crashes later in a spectacular way, cfr. the logs below. > > U-Boot flinfo says: > > Bank # 1: CFI conformant flash (16 x 16) Size: 64 MB in 512 Sectors > AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E > Erase timeout: 4096 ms, write timeout: 1 ms > Buffer write timeout: 3 ms, buffer size: 64 bytes > Sector Start Addresses: > 00000000 RO 00020000 00040000 RO 00060000 RO 00080000 > 000A0000 000C0000 000E0000 00100000 00120000 > 00140000 00160000 00180000 001A0000 001C0000 > ... > 03FC0000 03FE0000 > > Bank # 2: missing or unknown FLASH type > Do you use "cfi-flash" compatible in u-boot and it works just fine? If yes, I would try to understand what are the differences between the probe paths from u-boot and linux. I know it doesn't help much, but we should start from somewhere if we don't have any other feedback. Cheers, ta
