U-Boot SPI NOR support (sf layer) is quite outdated as it does not support 4 byte addressing opcodes, SFDP table parsing and different types of quad mode enable sequences.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