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1
2menuconfig NAND
3	bool "NAND Device Support"
4if NAND
5
6config SYS_NAND_SELF_INIT
7	bool
8	help
9	  This option, if enabled, provides more flexible and linux-like
10	  NAND initialization process.
11
12config NAND_DENALI
13	bool
14	select SYS_NAND_SELF_INIT
15	imply CMD_NAND
16
17config NAND_DENALI_DT
18	bool "Support Denali NAND controller as a DT device"
19	select NAND_DENALI
20	depends on OF_CONTROL && DM
21	help
22	  Enable the driver for NAND flash on platforms using a Denali NAND
23	  controller as a DT device.
24
25config NAND_DENALI_SPARE_AREA_SKIP_BYTES
26	int "Number of bytes skipped in OOB area"
27	depends on NAND_DENALI
28	range 0 63
29	help
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.
33
34config NAND_OMAP_GPMC
35	bool "Support OMAP GPMC NAND controller"
36	depends on ARCH_OMAP2PLUS
37	help
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.
42
43config NAND_OMAP_GPMC_PREFETCH
44	bool "Enable GPMC Prefetch"
45	depends on NAND_OMAP_GPMC
46	default y
47	help
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.
51
52config NAND_OMAP_ELM
53	bool "Enable ELM driver for OMAPxx and AMxx platforms."
54	depends on NAND_OMAP_GPMC && !OMAP34XX
55	help
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.
62
63config NAND_VF610_NFC
64	bool "Support for Freescale NFC for VF610"
65	select SYS_NAND_SELF_INIT
66	imply CMD_NAND
67	help
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.
72
73choice
74	prompt "Hardware ECC strength"
75	depends on NAND_VF610_NFC
76	default SYS_NAND_VF610_NFC_45_ECC_BYTES
77	help
78	  Select the ECC strength used in the hardware BCH ECC block.
79
80config SYS_NAND_VF610_NFC_45_ECC_BYTES
81	bool "24-error correction (45 ECC bytes)"
82
83config SYS_NAND_VF610_NFC_60_ECC_BYTES
84	bool "32-error correction (60 ECC bytes)"
85
86endchoice
87
88config NAND_PXA3XX
89	bool "Support for NAND on PXA3xx and Armada 370/XP/38x"
90	select SYS_NAND_SELF_INIT
91	imply CMD_NAND
92	help
93	  This enables the driver for the NAND flash device found on
94	  PXA3xx processors (NFCv1) and also on Armada 370/XP (NFCv2).
95
96config NAND_SUNXI
97	bool "Support for NAND on Allwinner SoCs"
98	default ARCH_SUNXI
99	depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUN8I
100	select SYS_NAND_SELF_INIT
101	select SYS_NAND_U_BOOT_LOCATIONS
102	select SPL_NAND_SUPPORT
103	imply CMD_NAND
104	---help---
105	Enable support for NAND. This option enables the standard and
106	SPL drivers.
107	The SPL driver only supports reading from the NAND using DMA
108	transfers.
109
110if NAND_SUNXI
111
112config NAND_SUNXI_SPL_ECC_STRENGTH
113	int "Allwinner NAND SPL ECC Strength"
114	default 64
115
116config NAND_SUNXI_SPL_ECC_SIZE
117	int "Allwinner NAND SPL ECC Step Size"
118	default 1024
119
120config NAND_SUNXI_SPL_USABLE_PAGE_SIZE
121	int "Allwinner NAND SPL Usable Page Size"
122	default 1024
123
124endif
125
126config NAND_ARASAN
127	bool "Configure Arasan Nand"
128	select SYS_NAND_SELF_INIT
129	imply CMD_NAND
130	help
131	  This enables Nand driver support for Arasan nand flash
132	  controller. This uses the hardware ECC for read and
133	  write operations.
134
135config NAND_MXC
136	bool "MXC NAND support"
137	depends on CPU_ARM926EJS || CPU_ARM1136 || MX5
138	imply CMD_NAND
139	help
140	  This enables the NAND driver for the NAND flash controller on the
141	  i.MX27 / i.MX31 / i.MX5 rocessors.
142
143config NAND_MXS
144	bool "MXS NAND support"
145	depends on MX23 || MX28 || MX6 || MX7
146	select SYS_NAND_SELF_INIT
147	imply CMD_NAND
148	select APBH_DMA
149	select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7
150	select APBH_DMA_BURST8 if ARCH_MX6 || ARCH_MX7
151	help
152	  This enables NAND driver for the NAND flash controller on the
153	  MXS processors.
154
155if NAND_MXS
156
157config NAND_MXS_DT
158	bool "Support MXS NAND controller as a DT device"
159	depends on OF_CONTROL && MTD
160	help
161	  Enable the driver for MXS NAND flash on platforms using
162	  device tree.
163
164config NAND_MXS_USE_MINIMUM_ECC
165	bool "Use minimum ECC strength supported by the controller"
166	default false
167
168endif
169
170config NAND_ZYNQ
171	bool "Support for Zynq Nand controller"
172	select SYS_NAND_SELF_INIT
173	imply CMD_NAND
174	help
175	  This enables Nand driver support for Nand flash controller
176	  found on Zynq SoC.
177
178config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS
179	bool "Enable use of 1st stage bootloader timing for NAND"
180	depends on NAND_ZYNQ
181	help
182	  This flag prevent U-boot reconfigure NAND flash controller and reuse
183	  the NAND timing from 1st stage bootloader.
184
185comment "Generic NAND options"
186
187config SYS_NAND_BLOCK_SIZE
188	hex "NAND chip eraseblock size"
189	depends on ARCH_SUNXI
190	help
191	  Number of data bytes in one eraseblock for the NAND chip on the
192	  board. This is the multiple of NAND_PAGE_SIZE and the number of
193	  pages.
194
195config SYS_NAND_PAGE_SIZE
196	hex "NAND chip page size"
197	depends on ARCH_SUNXI
198	help
199	  Number of data bytes in one page for the NAND chip on the
200	  board, not including the OOB area.
201
202config SYS_NAND_OOBSIZE
203	hex "NAND chip OOB size"
204	depends on ARCH_SUNXI
205	help
206	  Number of bytes in the Out-Of-Band area for the NAND chip on
207	  the board.
208
209# Enhance depends when converting drivers to Kconfig which use this config
210# option (mxc_nand, ndfc, omap_gpmc).
211config SYS_NAND_BUSWIDTH_16BIT
212	bool "Use 16-bit NAND interface"
213	depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI
214	help
215	  Indicates that NAND device has 16-bit wide data-bus. In absence of this
216	  config, bus-width of NAND device is assumed to be either 8-bit and later
217	  determined by reading ONFI params.
218	  Above config is useful when NAND device's bus-width information cannot
219	  be determined from on-chip ONFI params, like in following scenarios:
220	  - SPL boot does not support reading of ONFI parameters. This is done to
221	    keep SPL code foot-print small.
222	  - In current U-Boot flow using nand_init(), driver initialization
223	    happens in board_nand_init() which is called before any device probe
224	    (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
225	    not available while configuring controller. So a static CONFIG_NAND_xx
226	    is needed to know the device's bus-width in advance.
227
228if SPL
229
230config SYS_NAND_U_BOOT_LOCATIONS
231	bool "Define U-boot binaries locations in NAND"
232	help
233	Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig.
234	This option should not be enabled when compiling U-boot for boards
235	defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h
236	file.
237
238config SYS_NAND_U_BOOT_OFFS
239	hex "Location in NAND to read U-Boot from"
240	default 0x800000 if NAND_SUNXI
241	depends on SYS_NAND_U_BOOT_LOCATIONS
242	help
243	Set the offset from the start of the nand where u-boot should be
244	loaded from.
245
246config SYS_NAND_U_BOOT_OFFS_REDUND
247	hex "Location in NAND to read U-Boot from"
248	default SYS_NAND_U_BOOT_OFFS
249	depends on SYS_NAND_U_BOOT_LOCATIONS
250	help
251	Set the offset from the start of the nand where the redundant u-boot
252	should be loaded from.
253
254config SPL_NAND_AM33XX_BCH
255	bool "Enables SPL-NAND driver which supports ELM based"
256	depends on NAND_OMAP_GPMC && !OMAP34XX
257	default y
258        help
259	  Hardware ECC correction. This is useful for platforms which have ELM
260	  hardware engine and use NAND boot mode.
261	  Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
262	  so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
263          SPL-NAND driver with software ECC correction support.
264
265config SPL_NAND_DENALI
266	bool "Support Denali NAND controller for SPL"
267	help
268	  This is a small implementation of the Denali NAND controller
269	  for use on SPL.
270
271config SPL_NAND_SIMPLE
272	bool "Use simple SPL NAND driver"
273	depends on !SPL_NAND_AM33XX_BCH
274	help
275	  Support for NAND boot using simple NAND drivers that
276	  expose the cmd_ctrl() interface.
277endif
278
279endif   # if NAND
280