[U-Boot] [PATCH v4 0/6] sandbox: Add SPI and SPI flash emulation

[Simon Glass]

This series was written by Mike Frysinger some time ago. It was fully
functional but had a few outstanding comments and the patches were never
applied:

http://patchwork.ozlabs.org/patch/146127/
http://patchwork.ozlabs.org/patch/146128/
http://patchwork.ozlabs.org/patch/146129/

I have picked these up, tidied up a few things and re-submitted. With the
addition of the 'sf test' command we can now test this series more easier,
and in fact it did find an erase bug which is now fixed.

The test used was:

 ./u-boot --spi_sf 0:0:M25P16:../image-peach-pit-adv.bin \
		-c "sf probe; sf test 0 400000"

U-Boot 2013.07-rc1-00016-g50db40c-dirty (Jun 22 2013 - 22:23:10)

DRAM:  128 MiB
Using default environment

In:    serial
Out:   serial
Err:   serial
SF: Detected M25P16 with page size 64 KiB, total 2 MiB
SPI flash test:
0 erase: 2 ticks, 2048000 KiB/s 16384.000 Mbps
1 check: 5 ticks, 819200 KiB/s 6553.600 Mbps
2 write: 22 ticks, 186181 KiB/s 1489.448 Mbps
3 read: 1 ticks, 4096000 KiB/s 32768.000 Mbps
Test passed
0 erase: 2 ticks, 2048000 KiB/s 16384.000 Mbps
1 check: 5 ticks, 819200 KiB/s 6553.600 Mbps
2 write: 22 ticks, 186181 KiB/s 1489.448 Mbps
3 read: 1 ticks, 4096000 KiB/s 32768.000 Mbps

(the .bin file is a 4MB SPI flash image)

Changes in v4:
- Add a description to the sandbox README
- Add additional error checking
- Add full error handling and reporting
- Add more helpful errors when the SPI spec is wrong
- Add new patch to increase sandbox memory size, so 'sf test' works
- Add new patch to make 'sf test' work on sandbox
- Add new patch to rename to sandbox_cmdline_option
- Add support for a Winbond 4MB/16MB parts
- Enable 'sf test' command on sandbox
- Enable support for winbond emulation as well as ST micro
- Fix bug in alignment checking
- Fix new checkpatch warnings
- Make use of new struct sandbox_spi_info
- Rebase on top of recent spi changes
- Rename sb to sandbox
- Rename sb to sandbox in SPI driver
- Tidy up erasing to cope with any size
- Update copyright year
- Update the copyright year

Changes in v3:
- rearchitected on top of state/getopt support

Changes in v2:
- No change log available in original v2 series

Mike Frysinger (3):
  sandbox: spi: Add SPI emulation bus
  sandbox: spi: Add new SPI flash driver
  sandbox: spi: Enable new spi/sf layers

Simon Glass (3):
  sandbox: Increase memory size to 32MB
  sandbox: spi: Adjust 'sf test' to work on sandbox
  sandbox: Rename sb_cmdline_option to sandbox_cmdline_option

 arch/sandbox/cpu/os.c                |   2 +-
 arch/sandbox/cpu/start.c             |  17 +-
 arch/sandbox/include/asm/config.h    |   8 +
 arch/sandbox/include/asm/getopt.h    |  23 +-
 arch/sandbox/include/asm/sections.h  |   4 +-
 arch/sandbox/include/asm/spi.h       |  58 +++++
 arch/sandbox/include/asm/state.h     |   9 +
 board/sandbox/sandbox/README.sandbox |  54 ++++
 common/cmd_sf.c                      |  14 +-
 drivers/mtd/spi/Makefile             |   1 +
 drivers/mtd/spi/sandbox.c            | 464 +++++++++++++++++++++++++++++++++++
 drivers/spi/Makefile                 |   1 +
 drivers/spi/sandbox_spi.c            | 199 +++++++++++++++
 include/configs/sandbox.h            |  12 +-
 14 files changed, 838 insertions(+), 28 deletions(-)
 create mode 100644 arch/sandbox/include/asm/spi.h
 create mode 100644 drivers/mtd/spi/sandbox.c
 create mode 100644 drivers/spi/sandbox_spi.c

-- 
1.8.3