[Qemu-devel] [PATCH v2 00/10] block/pflash_cfi02: Implement missing AMD pflash functionality

[Stephen Checkoway <stephen.checkoway@oberlin.edu>]

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
- Replace use of errc with g_printerr and exit

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 | 759 ++++++++++++++++++++++++++++++++++
 3 files changed, 1367 insertions(+), 237 deletions(-)
 create mode 100644 tests/pflash-cfi02-test.c

-- 
2.20.1 (Apple Git-117)