How calculate partitions.csv 'Offset', 'Size' value with different Flash size?

[water5]

# 2MB
# Name,     Type, SubType, Offset,   Size,		Flags
nvs,        data, nvs,     0x9000,   0x6000,
phy_init,   data, phy,     0xf000,   0x1000,
factory,    app,  factory, 0x10000,  0x160000,

# 4MB
# Name,   Type, SubType, Offset,  Size,		Flags
nvs,      data, nvs,     0x9000,  0x6000,
phy_init, data, phy,     0xf000,  0x1000,
factory,  app,  factory, 0x10000, 0x1F0000,

With 8MB, 16MB Flash size, how calculate the 'factory' partition size?

[robert-hh]

The factory partition holds the firmware. It is reduced for the 2MB flash boards and the configuration with ROMFS, but for larger flash the same value of 0x1F0000 is used. See the partition tables for 8MIb and 16MiB. You can use partitions-4MiBplus.csv also for larger flash. The remaining space will be used for the file system.