Hello, JEDEC STANDARD JESD216 for Serial Flash Discovery Parameters (SFDP) provides a mean to describe the features of a serial flash device using a set of internal parameter tables. Support in Linux has been added some time ago and the spi-nor driver is using it more often to detect the flash settings and even flash models.
This is the initial framework for the RDSFDP command giving access to a private SFDP area under the flash and one example for the n25q256a to check this is a good approach. Thanks, C. Cédric Le Goater (2): m25p80: Add basic support for the SFDP command m25p80: Add the n25q256a SFDP table hw/block/m25p80_sfdp.h | 17 +++++++++++++++ hw/block/m25p80.c | 39 +++++++++++++++++++++++++++++++-- hw/block/m25p80_sfdp.c | 49 ++++++++++++++++++++++++++++++++++++++++++ hw/block/Makefile.objs | 2 +- hw/block/trace-events | 1 + 5 files changed, 105 insertions(+), 3 deletions(-) create mode 100644 hw/block/m25p80_sfdp.h create mode 100644 hw/block/m25p80_sfdp.c -- 2.25.4
