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These chips seem to be rather regular, supporting 2.7V..3.6V, the common erase block sizes 4KiB, 32KiB, 64KiB and the usual block- protection bits. Status/configuration register naming differs from other vendors, though. These chips have 2 status registers plus 3 configuration registers. Configuration registers 1 & 2 match status registers 2 & 3 of what we are used from other vendors. Read opcodes match too, however writes are always done through the WRSR instruction which can write up to 4 bytes (SR1, CR1, CR2, CR3). S25FL256L supports native 4BA commands and entering a 4BA mode. However, it uses an unusual opcode (0x53) for the 32KiB 4BA block erase. Signed-off-by: Nico Huber <nico.h@gmx.de> Change-Id: I356df6649f29e50879a4da4183f1164a81cb0a09 Reviewed-on: https://review.coreboot.org/c/flashrom/+/64747 Reviewed-by: Thomas Heijligen <src@posteo.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>