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"
126 select SYS_NAND_SELF_INIT
129 This enables Nand driver support for Arasan nand flash
130 controller. This uses the hardware ECC for read and
134 bool "MXC NAND support"
135 depends on CPU_ARM926EJS || CPU_ARM1136 || MX5
138 This enables the NAND driver for the NAND flash controller on the
139 i.MX27 / i.MX31 / i.MX5 rocessors.
142 bool "MXS NAND support"
143 depends on MX6 || MX7
146 This enables NAND driver for the NAND flash controller on the
150 bool "Support for Zynq Nand controller"
151 select SYS_NAND_SELF_INIT
154 This enables Nand driver support for Nand flash controller
157 config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS
158 bool "Enable use of 1st stage bootloader timing for NAND"
161 This flag prevent U-boot reconfigure NAND flash controller and reuse
162 the NAND timing from 1st stage bootloader.
164 comment "Generic NAND options"
166 # Enhance depends when converting drivers to Kconfig which use this config
167 # option (mxc_nand, ndfc, omap_gpmc).
168 config SYS_NAND_BUSWIDTH_16BIT
169 bool "Use 16-bit NAND interface"
170 depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI
172 Indicates that NAND device has 16-bit wide data-bus. In absence of this
173 config, bus-width of NAND device is assumed to be either 8-bit and later
174 determined by reading ONFI params.
175 Above config is useful when NAND device's bus-width information cannot
176 be determined from on-chip ONFI params, like in following scenarios:
177 - SPL boot does not support reading of ONFI parameters. This is done to
178 keep SPL code foot-print small.
179 - In current U-Boot flow using nand_init(), driver initialization
180 happens in board_nand_init() which is called before any device probe
181 (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
182 not available while configuring controller. So a static CONFIG_NAND_xx
183 is needed to know the device's bus-width in advance.
187 config SYS_NAND_U_BOOT_LOCATIONS
188 bool "Define U-boot binaries locations in NAND"
190 Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig.
191 This option should not be enabled when compiling U-boot for boards
192 defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h
195 config SYS_NAND_U_BOOT_OFFS
196 hex "Location in NAND to read U-Boot from"
197 default 0x800000 if NAND_SUNXI
198 depends on SYS_NAND_U_BOOT_LOCATIONS
200 Set the offset from the start of the nand where u-boot should be
203 config SYS_NAND_U_BOOT_OFFS_REDUND
204 hex "Location in NAND to read U-Boot from"
205 default SYS_NAND_U_BOOT_OFFS
206 depends on SYS_NAND_U_BOOT_LOCATIONS
208 Set the offset from the start of the nand where the redundant u-boot
209 should be loaded from.
211 config SPL_NAND_AM33XX_BCH
212 bool "Enables SPL-NAND driver which supports ELM based"
213 depends on NAND_OMAP_GPMC && !OMAP34XX
216 Hardware ECC correction. This is useful for platforms which have ELM
217 hardware engine and use NAND boot mode.
218 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
219 so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
220 SPL-NAND driver with software ECC correction support.
222 config SPL_NAND_DENALI
223 bool "Support Denali NAND controller for SPL"
225 This is a small implementation of the Denali NAND controller
228 config SPL_NAND_SIMPLE
229 bool "Use simple SPL NAND driver"
230 depends on !SPL_NAND_AM33XX_BCH
232 Support for NAND boot using simple NAND drivers that
233 expose the cmd_ctrl() interface.