Print an error message on read errors and abort instead of proceeding anyway

Improve error checking in file write, chip read and chip verify.
Refactor the read routines a bit to split reading from file writing.

Log for a failed read:
Found chip "Winbond W25x16" (2048 KB, SPI) at physical address
Reading flash... Invalid OPCODE 0x03
Read operation failed!

Corresponding to flashrom svn r1079.

Signed-off-by: Carl-Daniel Hailfinger <>
Acked-by: Stephen Kou <>
3 files changed