The goal of this patch series implement the following AMD command-set parallel
flash functionality:
- flash interleaving;
- nonuniform sector sizes;
- erase suspend/resume commands; and
- multi-sector erase.
During refactoring and implementation, I discovered several bugs that are
fixed here as well:
- flash commands use only 11-bits of the address in most cases, but the
current code uses all of them [1];
- entering CFI mode from autoselect mode and then exiting CFI mode should
return the chip to autoselect mode, but the current code returns to read
array mode; and
- reset command should be ignored during sector/chip erase, but the current
code performs the reset.
The first patch in the series adds a test for the existing behavior. Tests for
additional behavior/bug fixes are added in the relevant patch.
1. I found firmware in the wild that relies on the 11-bit address behavior,
probably due to a bug in the firmware itself.
Changes from v1:
- Fix missing spaces around *, -, and ?;
- Fix missing Signed-off-by line on patch 7; and
- Replace use of errc with g_printerr and exit.
Changes from v2:
- Remove global_qtest from tests; and
- Test the CFI table changes.
Stephen Checkoway (10):
block/pflash_cfi02: Add test for supported commands
block/pflash_cfi02: Refactor, NFC intended
block/pflash_cfi02: Fix command address comparison
block/pflash_cfi02: Implement intereleaved flash devices
block/pflash_cfi02: Implement nonuniform sector sizes
block/pflash_cfi02: Fix CFI in autoselect mode
block/pflash_cfi02: Fix reset command not ignored during erase
block/pflash_cfi02: Implement multi-sector erase
block/pflash_cfi02: Implement erase suspend/resume
block/pflash_cfi02: Use the chip erase time specified in the CFI table
hw/block/pflash_cfi02.c | 843 +++++++++++++++++++++++++++-----------
tests/Makefile.include | 2 +
tests/pflash-cfi02-test.c | 815 ++++++++++++++++++++++++++++++++++++
3 files changed, 1423 insertions(+), 237 deletions(-)
create mode 100644 tests/pflash-cfi02-test.c
--
2.20.1 (Apple Git-117)