3 bool "NAND Device Support"
6 config SYS_NAND_SELF_INIT
9 This option, if enabled, provides more flexible and linux-like
10 NAND initialization process.
14 select SYS_NAND_SELF_INIT
18 bool "Support Denali NAND controller as a DT device"
20 depends on OF_CONTROL && DM
22 Enable the driver for NAND flash on platforms using a Denali NAND
23 controller as a DT device.
25 config NAND_DENALI_SPARE_AREA_SKIP_BYTES
26 int "Number of bytes skipped in OOB area"
27 depends on NAND_DENALI
30 This option specifies the number of bytes to skip from the beginning
31 of OOB area before last ECC sector data starts. This is potentially
32 used to preserve the bad block marker in the OOB area.
35 bool "Support OMAP GPMC NAND controller"
36 depends on ARCH_OMAP2PLUS
38 Enables omap_gpmc.c driver for OMAPx and AMxxxx platforms.
39 GPMC controller is used for parallel NAND flash devices, and can
40 do ECC calculation (not ECC error detection) for HAM1, BCH4, BCH8
41 and BCH16 ECC algorithms.
43 config NAND_OMAP_GPMC_PREFETCH
44 bool "Enable GPMC Prefetch"
45 depends on NAND_OMAP_GPMC
48 On OMAP platforms that use the GPMC controller
49 (CONFIG_NAND_OMAP_GPMC_PREFETCH), this options enables the code that
50 uses the prefetch mode to speed up read operations.
53 bool "Enable ELM driver for OMAPxx and AMxx platforms."
54 depends on NAND_OMAP_GPMC && !OMAP34XX
56 ELM controller is used for ECC error detection (not ECC calculation)
57 of BCH4, BCH8 and BCH16 ECC algorithms.
58 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
59 thus such SoC platforms need to depend on software library for ECC error
60 detection. However ECC calculation on such plaforms would still be
61 done by GPMC controller.
64 bool "Support for Freescale NFC for VF610"
65 select SYS_NAND_SELF_INIT
68 Enables support for NAND Flash Controller on some Freescale
69 processors like the VF610, MCF54418 or Kinetis K70.
70 The driver supports a maximum 2k page size. The driver
71 currently does not support hardware ECC.
74 prompt "Hardware ECC strength"
75 depends on NAND_VF610_NFC
76 default SYS_NAND_VF610_NFC_45_ECC_BYTES
78 Select the ECC strength used in the hardware BCH ECC block.
80 config SYS_NAND_VF610_NFC_45_ECC_BYTES
81 bool "24-error correction (45 ECC bytes)"
83 config SYS_NAND_VF610_NFC_60_ECC_BYTES
84 bool "32-error correction (60 ECC bytes)"
89 bool "Support for NAND on PXA3xx and Armada 370/XP/38x"
90 select SYS_NAND_SELF_INIT
93 This enables the driver for the NAND flash device found on
94 PXA3xx processors (NFCv1) and also on Armada 370/XP (NFCv2).
97 bool "Support for NAND on Allwinner SoCs"
98 depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
99 select SYS_NAND_SELF_INIT
100 select SYS_NAND_U_BOOT_LOCATIONS
103 Enable support for NAND. This option enables the standard and
105 The SPL driver only supports reading from the NAND using DMA
110 config NAND_SUNXI_SPL_ECC_STRENGTH
111 int "Allwinner NAND SPL ECC Strength"
114 config NAND_SUNXI_SPL_ECC_SIZE
115 int "Allwinner NAND SPL ECC Step Size"
118 config NAND_SUNXI_SPL_USABLE_PAGE_SIZE
119 int "Allwinner NAND SPL Usable Page Size"
125 bool "Configure Arasan Nand"
128 This enables Nand driver support for Arasan nand flash
129 controller. This uses the hardware ECC for read and
133 bool "MXC NAND support"
134 depends on CPU_ARM926EJS || CPU_ARM1136 || MX5
137 This enables the NAND driver for the NAND flash controller on the
138 i.MX27 / i.MX31 / i.MX5 rocessors.
141 bool "MXS NAND support"
142 depends on MX6 || MX7
145 This enables NAND driver for the NAND flash controller on the
149 bool "Support for Zynq Nand controller"
150 select SYS_NAND_SELF_INIT
153 This enables Nand driver support for Nand flash controller
156 config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS
157 bool "Enable use of 1st stage bootloader timing for NAND"
160 This flag prevent U-boot reconfigure NAND flash controller and reuse
161 the NAND timing from 1st stage bootloader.
163 comment "Generic NAND options"
165 # Enhance depends when converting drivers to Kconfig which use this config
166 # option (mxc_nand, ndfc, omap_gpmc).
167 config SYS_NAND_BUSWIDTH_16BIT
168 bool "Use 16-bit NAND interface"
169 depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI
171 Indicates that NAND device has 16-bit wide data-bus. In absence of this
172 config, bus-width of NAND device is assumed to be either 8-bit and later
173 determined by reading ONFI params.
174 Above config is useful when NAND device's bus-width information cannot
175 be determined from on-chip ONFI params, like in following scenarios:
176 - SPL boot does not support reading of ONFI parameters. This is done to
177 keep SPL code foot-print small.
178 - In current U-Boot flow using nand_init(), driver initialization
179 happens in board_nand_init() which is called before any device probe
180 (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
181 not available while configuring controller. So a static CONFIG_NAND_xx
182 is needed to know the device's bus-width in advance.
186 config SYS_NAND_U_BOOT_LOCATIONS
187 bool "Define U-boot binaries locations in NAND"
189 Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig.
190 This option should not be enabled when compiling U-boot for boards
191 defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h
194 config SYS_NAND_U_BOOT_OFFS
195 hex "Location in NAND to read U-Boot from"
196 default 0x800000 if NAND_SUNXI
197 depends on SYS_NAND_U_BOOT_LOCATIONS
199 Set the offset from the start of the nand where u-boot should be
202 config SYS_NAND_U_BOOT_OFFS_REDUND
203 hex "Location in NAND to read U-Boot from"
204 default SYS_NAND_U_BOOT_OFFS
205 depends on SYS_NAND_U_BOOT_LOCATIONS
207 Set the offset from the start of the nand where the redundant u-boot
208 should be loaded from.
210 config SPL_NAND_AM33XX_BCH
211 bool "Enables SPL-NAND driver which supports ELM based"
212 depends on NAND_OMAP_GPMC && !OMAP34XX
215 Hardware ECC correction. This is useful for platforms which have ELM
216 hardware engine and use NAND boot mode.
217 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
218 so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
219 SPL-NAND driver with software ECC correction support.
221 config SPL_NAND_DENALI
222 bool "Support Denali NAND controller for SPL"
224 This is a small implementation of the Denali NAND controller
227 config SPL_NAND_SIMPLE
228 bool "Use simple SPL NAND driver"
229 depends on !SPL_NAND_AM33XX_BCH
231 Support for NAND boot using simple NAND drivers that
232 expose the cmd_ctrl() interface.