[U-Boot] [PATCH v2 00/11] SF: Migrate to Linux SPI NOR framework

Vignesh R vigneshr at ti.com
Fri Dec 21 06:38:25 UTC 2018


U-Boot SPI NOR support (sf layer) is quite outdated as it does not
support 4 byte addressing opcodes, SFDP table parsing and different types of
quad mode enable sequences. Many newer flashes no longer support BANK
registers used by sf layer to a access >16MB space.
Also, many SPI controllers have special MMIO interfaces which provide
accelerated read/write access but require knowledge of flash parameters
to make use of it. Recent spi-mem layer provides a way to support such
flashes but sf layer isn't using that.
This patch series syncs SPI NOR framework from Linux v4.19. It also adds
spi-mem support on top.
So, we gain 4byte addressing support and SFDP support. This makes
migrating to U-Boot MTD framework easier.

Tested with few Spansion, micron and macronix flashes with TI's dra7xx,
k2g, am43xx EVMs. I dont have access to flashes from other vendors. So,
I would greatly appreciate testing on other platforms. Complete series
with dependencies here[1]

For clean build on some platforms, depends on CONFIG_SPI_FLASH migration
to defconfigs [2]

[1] https://github.com/r-vignesh/u-boot.git  branch: spi-nor-mig-patch-v2
[2] https://patchwork.ozlabs.org/patch/1007485/

Simon, Stefan, Thanks for testing previous versions.
I haven't carried Tested-by's here as I have added back SPI_FLASH_BAR
support (but isn't enabled by default). Would be great if you could
retest this series.
I am hoping there won't be any major rework/changes after this round.

Change log:
Since v1:
Remove #ifindef __UBOOT__
Add back BAR support, but dont enable as default for all platform (see
10/11 for more details)
Enable SPI_FLASH_TINY on boards where there is SPL size constraint as
seen on travis ci builds.
Drop sf_mtd changes for now as it seems to cause issues.
v1: https://patchwork.ozlabs.org/cover/1012146/

Since RFC v2:
Fix issues reported by Simon Goldschmidt wrt 4 use of byte addressing opcode
Fix issues in compiling SFDP code
Re organize file names and Makefile to simply spi-nor-tiny inclusion
Remove SPI_FLASH_BAR and SF_DUAL_FLASH as these are no longer used
RFC v2: https://patchwork.ozlabs.org/cover/1007589/

Since RFC v1:
Add lightweight SPI flash stack for boards with SPL size constraints
Provide non DM version of spi-mem
Fix build issues on different platforms as reported by travis-ci on v1

RFC v1: https://patchwork.ozlabs.org/cover/1004689/

Vignesh R (11):
  spi-mem: Claim SPI bus before spi mem access
  spi: Add non DM version of SPI_MEM
  sh: bitops: add hweight*() macros
  mtd: spi: Port SPI NOR framework from Linux
  mtd: spi: Switch to new SPI NOR framework
  mtd: spi: Remove unused files
  mtd: spi: Add lightweight SPI flash stack for SPL
  configs: Enable SPI_FLASH_TINY for resource constrained boards
  configs: Remove SF_DUAL_FLASH
  configs: Don't use SPI_FLASH_BAR as default
  MAINTAINERS: Add an entry for SPI NOR

 MAINTAINERS                                   |    9 +
 arch/arm/mach-omap2/am33xx/Kconfig            |    1 -
 arch/sh/include/asm/bitops.h                  |    4 +
 common/spl/Kconfig                            |   21 +-
 configs/alt_defconfig                         |    1 -
 configs/am57xx_evm_defconfig                  |    1 -
 configs/am57xx_hs_evm_defconfig               |    1 -
 configs/ap121_defconfig                       |    1 -
 configs/ap143_defconfig                       |    1 -
 configs/avnet_ultra96_rev1_defconfig          |    1 -
 configs/axm_defconfig                         |    1 +
 configs/axs101_defconfig                      |    1 -
 configs/axs103_defconfig                      |    1 -
 configs/bg0900_defconfig                      |    1 -
 configs/blanche_defconfig                     |    1 -
 configs/cl-som-am57x_defconfig                |    1 -
 configs/clearfog_defconfig                    |    1 -
 configs/cm_t43_defconfig                      |    1 -
 configs/da850_am18xxevm_defconfig             |    1 +
 configs/da850evm_nand_defconfig               |    2 +-
 configs/db-88f6820-amc_defconfig              |    1 -
 configs/db-88f6820-gp_defconfig               |    1 +
 configs/display5_defconfig                    |    1 -
 configs/display5_factory_defconfig            |    1 -
 configs/dra7xx_evm_defconfig                  |    1 -
 configs/dra7xx_hs_evm_defconfig               |    1 -
 configs/ds109_defconfig                       |    1 -
 configs/ds414_defconfig                       |    1 -
 configs/evb-rv1108_defconfig                  |    1 -
 configs/gose_defconfig                        |    1 -
 configs/helios4_defconfig                     |    1 -
 configs/k2g_evm_defconfig                     |    1 -
 configs/k2g_hs_evm_defconfig                  |    1 -
 configs/koelsch_defconfig                     |    1 -
 configs/lager_defconfig                       |    1 -
 configs/maxbcm_defconfig                      |    1 -
 configs/mt7629_rfb_defconfig                  |    1 -
 configs/mx6sxsabreauto_defconfig              |    1 -
 configs/mx6sxsabresd_defconfig                |    1 -
 configs/mx6ul_14x14_evk_defconfig             |    1 -
 configs/mx6ul_9x9_evk_defconfig               |    1 -
 configs/mx6ull_14x14_evk_defconfig            |    1 -
 configs/mx6ull_14x14_evk_plugin_defconfig     |    1 -
 configs/mx7dsabresd_qspi_defconfig            |    1 -
 configs/porter_defconfig                      |    2 +-
 configs/r8a77970_eagle_defconfig              |    1 -
 configs/silk_defconfig                        |    1 -
 configs/socfpga_arria5_defconfig              |    1 -
 configs/socfpga_cyclone5_defconfig            |    1 -
 configs/socfpga_is1_defconfig                 |    1 -
 configs/socfpga_sockit_defconfig              |    1 -
 configs/socfpga_socrates_defconfig            |    1 -
 configs/socfpga_sr1500_defconfig              |    1 -
 configs/socfpga_stratix10_defconfig           |    1 -
 configs/stout_defconfig                       |    2 +-
 configs/taurus_defconfig                      |    3 +-
 configs/topic_miami_defconfig                 |    1 -
 configs/topic_miamilite_defconfig             |    2 -
 configs/topic_miamiplus_defconfig             |    2 -
 configs/turris_omnia_defconfig                |    2 +-
 configs/xilinx_versal_virt_defconfig          |    1 -
 configs/xilinx_zynqmp_mini_qspi_defconfig     |    2 -
 configs/xilinx_zynqmp_zc1232_revA_defconfig   |    2 -
 configs/xilinx_zynqmp_zc1254_revA_defconfig   |    2 -
 configs/xilinx_zynqmp_zc1275_revA_defconfig   |    2 -
 configs/xilinx_zynqmp_zc1275_revB_defconfig   |    2 -
 .../xilinx_zynqmp_zc1751_xm015_dc1_defconfig  |    1 -
 .../xilinx_zynqmp_zc1751_xm016_dc2_defconfig  |    1 -
 .../xilinx_zynqmp_zc1751_xm018_dc4_defconfig  |    1 -
 configs/xilinx_zynqmp_zcu100_revC_defconfig   |    1 -
 configs/xilinx_zynqmp_zcu102_rev1_0_defconfig |    1 -
 configs/xilinx_zynqmp_zcu102_revA_defconfig   |    1 -
 configs/xilinx_zynqmp_zcu102_revB_defconfig   |    1 -
 configs/xilinx_zynqmp_zcu104_revA_defconfig   |    2 -
 configs/xilinx_zynqmp_zcu104_revC_defconfig   |    2 -
 configs/xilinx_zynqmp_zcu106_revA_defconfig   |    2 -
 configs/xilinx_zynqmp_zcu111_revA_defconfig   |    1 -
 configs/zynq_cc108_defconfig                  |    1 -
 configs/zynq_cse_qspi_defconfig               |    1 -
 configs/zynq_dlc20_rev1_0_defconfig           |    1 -
 configs/zynq_microzed_defconfig               |    1 -
 configs/zynq_minized_defconfig                |    1 -
 configs/zynq_z_turn_defconfig                 |    1 -
 configs/zynq_zc702_defconfig                  |    1 -
 configs/zynq_zc706_defconfig                  |    1 -
 configs/zynq_zc770_xm010_defconfig            |    1 -
 configs/zynq_zc770_xm013_defconfig            |    1 -
 configs/zynq_zed_defconfig                    |    1 -
 configs/zynq_zybo_defconfig                   |    1 -
 configs/zynq_zybo_z7_defconfig                |    1 -
 doc/SPI/README.dual-flash                     |   92 -
 doc/SPI/README.ti_qspi_dra_test               |    1 -
 drivers/mtd/spi/Kconfig                       |   16 +-
 drivers/mtd/spi/Makefile                      |   12 +-
 drivers/mtd/spi/sandbox.c                     |   36 +-
 drivers/mtd/spi/sf_dataflash.c                |   11 +-
 drivers/mtd/spi/sf_internal.h                 |  225 +-
 drivers/mtd/spi/sf_probe.c                    |   33 +-
 drivers/mtd/spi/spi-nor-core.c                | 2432 +++++++++++++++++
 drivers/mtd/spi/spi-nor-ids.c                 |  297 ++
 drivers/mtd/spi/spi-nor-tiny.c                |  810 ++++++
 drivers/mtd/spi/spi_flash.c                   | 1337 ---------
 drivers/mtd/spi/spi_flash_ids.c               |  211 --
 drivers/spi/Kconfig                           |    9 +-
 drivers/spi/Makefile                          |    1 +
 drivers/spi/spi-mem-nodm.c                    |   89 +
 drivers/spi/spi-mem.c                         |    6 +
 drivers/spi/stm32_qspi.c                      |    4 +-
 include/configs/T102xQDS.h                    |    1 -
 include/configs/T102xRDB.h                    |    1 -
 include/configs/T104xRDB.h                    |    1 -
 include/configs/T208xQDS.h                    |    1 -
 include/configs/T208xRDB.h                    |    1 -
 include/configs/gw_ventana.h                  |    1 -
 include/configs/km/kmp204x-common.h           |    1 -
 include/configs/ls1021aiot.h                  |    1 -
 include/configs/socfpga_stratix10_socdk.h     |    1 -
 include/linux/mtd/cfi.h                       |   32 +
 include/linux/mtd/spi-nor.h                   |  419 +++
 include/spi_flash.h                           |  105 +-
 120 files changed, 4266 insertions(+), 2058 deletions(-)
 delete mode 100644 doc/SPI/README.dual-flash
 create mode 100644 drivers/mtd/spi/spi-nor-core.c
 create mode 100644 drivers/mtd/spi/spi-nor-ids.c
 create mode 100644 drivers/mtd/spi/spi-nor-tiny.c
 delete mode 100644 drivers/mtd/spi/spi_flash.c
 delete mode 100644 drivers/mtd/spi/spi_flash_ids.c
 create mode 100644 drivers/spi/spi-mem-nodm.c
 create mode 100644 include/linux/mtd/cfi.h
 create mode 100644 include/linux/mtd/spi-nor.h

-- 
2.20.1



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