d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
454e22acff
freebsd-skq/sys/contrib/octeon-sdk/cvmx-nand.h
jmallett 56248d9da8 Merge the Cavium Octeon SDK 2.3.0 Simple Executive code and update FreeBSD to 
make use of it where possible.

This primarily brings in support for newer hardware, and FreeBSD is not yet
able to support the abundance of IRQs on new hardware and many features in the
Ethernet driver.

Because of the changes to IRQs in the Simple Executive, we have to maintain our
own list of Octeon IRQs now, which probably can be pared-down and be specific
to the CIU interrupt unit soon, and when other interrupt mechanisms are added
they can maintain their own definitions.

Remove unmasking of interrupts from within the UART device now that the
function used is no longer present in the Simple Executive.  The unmasking
seems to have been gratuitous as this is more properly handled by the buses
above the UART device, and seems to work on that basis.
2012-03-11 06:17:49 +00:00

717 lines
27 KiB
C
Raw Blame History

/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* This header defines the CVMX interface to the NAND flash controller. The
* basic operations common to all NAND devices are supported by this API, but
* many more advanced functions are not support. The low level hardware supports
* all types of transactions, but this API only implements the must commonly
* used operations. This API performs no locking, so it is the responsibility of
* the caller to make sure only one thread of execution is accessing the NAND
* controller at a time. Most applications should not use this API directly but
* instead use a flash logical layer supplied through a secondary system. For
* example, the Linux MTD layer provides a driver for running JFFS2 on top of
* NAND flash.
*
* <h2>Selecting the NAND Chip</h2>
*
* Octeon's NAND controller assumes a single NAND chip is connected to a boot
* bus chip select. Throughout this API, NAND chips are referred to by the chip
* select they are connected to (0-7). Chip select 0 will only be a NAND chip
* when you are booting from NAND flash.
*
* <h2>NAND Addressing</h2>
*
* Various functions in cvmx-nand use addresses to index into NAND flash. All
* functions us a uniform address translation scheme to map the passed address
* into a NAND block, page, and column. In NAND flash a page represents the
* basic unit of reads and writes. Each page contains a power of two number of
* bytes and some number of extra out of band (OOB) bytes. A fixed number of
* pages fit into each NAND block. Here is the mapping of bits in the cvmx-nand
* address to the NAND hardware:
* <pre>
* 63 56 48 40 32 24 16 8 0
* +-------+-------+-------+-------+-------+-------+-------+------+
* | 64 bit cvmx-nand nand_address|
* +------------------------------------------------+----+--------+
* | block |page| column |
* +-------+-------+-------+-------+-------+--------+----+--------+
* 63 56 48 40 32 24 16 8 0
* </pre>
* Basically the block, page, and column addresses are packet together. Before
* being sent out the NAND pins for addressing the column is padded out to an
* even number of bytes. This means that column address are 2 bytes, or 2
* address cycles, for page sizes between 512 and 65536 bytes. Page sizes
* between 128KB and 16MB would use 3 column address cycles. NAND device
* normally either have 32 or 64 pages per block, needing either 5 or 6 address
* bits respectively. This means you have 10 bits for block address using 4
* address cycles, or 18 for 5 address cycles. Using the cvmx-nand addressing
* scheme, it is not possible to directly index the OOB data. Instead you can
* access it by reading or writing more data than the normal page size would
* allow. Logically the OOB data is appended onto the the page data. For
* example, this means that a read of 65 bytes from a column address of 0x7ff
* would yield byte 2047 of the page and then 64 bytes of OOB data.
*
* <hr>$Revision: 35726 $<hr>
*/
#ifndef __CVMX_NAND_H__
#define __CVMX_NAND_H__
#ifdef __cplusplus
extern "C" {
#endif
/* Maxium PAGE + OOB size supported. This is used to size
** buffers, some that must be statically allocated. */
#define CVMX_NAND_MAX_PAGE_AND_OOB_SIZE (4096 + 256)
/* Block size for boot ECC */
#define CVMX_NAND_BOOT_ECC_BLOCK_SIZE (256)
/* ECC bytes for each block */
#define CVMX_NAND_BOOT_ECC_ECC_SIZE (8)
/**
* Flags to be passed to the initialize function
*/
typedef enum
{
CVMX_NAND_INITIALIZE_FLAGS_16BIT = 1<<0,
CVMX_NAND_INITIALIZE_FLAGS_DONT_PROBE = 1<<1,
CVMX_NAND_INITIALIZE_FLAGS_DEBUG = 1<<15,
} cvmx_nand_initialize_flags_t;
/**
* Return codes from NAND functions
*/
typedef enum
{
CVMX_NAND_SUCCESS = 0,
CVMX_NAND_NO_MEMORY = -1,
CVMX_NAND_BUSY = -2,
CVMX_NAND_INVALID_PARAM = -3,
CVMX_NAND_TIMEOUT = -4,
CVMX_NAND_ERROR = -5,
CVMX_NAND_NO_DEVICE = -6,
} cvmx_nand_status_t;
/**
* NAND NOP command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_4_63 : 60;
uint64_t zero : 4;
} cvmx_nand_cmd_nop_t;
/**
* NAND SET_TM_PAR command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t tim_par7 : 8;
uint64_t tim_par6 : 8;
uint64_t tim_par5 : 8;
uint64_t tim_par4 : 8;
uint64_t tim_par3 : 8;
uint64_t tim_par2 : 8;
uint64_t tim_par1 : 8;
uint64_t tim_mult : 4;
uint64_t one : 4;
} cvmx_nand_cmd_set_tm_par_t;
/**
* NAND WAIT command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_11_63 : 53;
uint64_t n : 3;
uint64_t reserved_5_7 : 3;
uint64_t r_b : 1;
uint64_t two : 4;
} cvmx_nand_cmd_wait_t;
/**
* NAND CHIP_EN command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_10_63 : 54;
uint64_t width : 2;
uint64_t one : 1;
uint64_t chip : 3;
uint64_t three : 4;
} cvmx_nand_cmd_chip_en_t;
/**
* NAND CHIP_DIS command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_4_63 : 60;
uint64_t three : 4;
} cvmx_nand_cmd_chip_dis_t;
/**
* NAND CLE command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_25_63 : 39;
uint64_t clen3 : 3;
uint64_t clen2 : 3;
uint64_t clen1 : 3;
uint64_t cmd_data : 8;
uint64_t reserved_4_7 : 4;
uint64_t four : 4;
} cvmx_nand_cmd_cle_t;
/**
* NAND ALE command definition
*/
typedef struct
{
uint64_t reserved_96_127 : 32;
uint64_t adr_bytes_h : 32;
uint64_t adr_bytes_l : 32;
uint64_t reserved_28_31 : 4;
uint64_t alen4 : 3;
uint64_t alen3 : 3;
uint64_t alen2 : 3;
uint64_t alen1 : 3;
uint64_t reserved_12_15 : 4;
uint64_t adr_byte_num : 4;
uint64_t reserved_4_7 : 4;
uint64_t five : 4;
} cvmx_nand_cmd_ale_t;
/**
* NAND WR command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_31_63 : 34;
uint64_t wrn2 : 3;
uint64_t wrn1 : 3;
uint64_t reserved_20_24 : 4;
uint64_t data_bytes : 16;
uint64_t eight : 4;
} cvmx_nand_cmd_wr_t;
/**
* NAND RD command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_32_63 : 32;
uint64_t rdn4 : 3;
uint64_t rdn3 : 3;
uint64_t rdn2 : 3;
uint64_t rdn1 : 3;
uint64_t data_bytes : 16;
uint64_t nine : 4;
} cvmx_nand_cmd_rd_t;
/**
* NAND RD_EDO command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_32_63 : 32;
uint64_t rdn4 : 3;
uint64_t rdn3 : 3;
uint64_t rdn2 : 3;
uint64_t rdn1 : 3;
uint64_t data_bytes : 16;
uint64_t ten : 4;
} cvmx_nand_cmd_rd_edo_t;
/**
* NAND WAIT_STATUS command definition
*/
typedef struct
{
uint64_t rdn4 : 3;
uint64_t rdn3 : 3;
uint64_t rdn2 : 3;
uint64_t rdn1 : 3;
uint64_t comp_byte : 8;
uint64_t and_mask : 8;
uint64_t nine : 4;
uint64_t reserved_28_95 : 64;
uint64_t clen4 : 3;
uint64_t clen3 : 3;
uint64_t clen2 : 3;
uint64_t clen1 : 3;
uint64_t data : 8;
uint64_t reserved_4_7 : 4;
uint64_t eleven : 4;
} cvmx_nand_cmd_wait_status_t;
/**
* NAND WAIT_STATUS_ALE command definition
*/
typedef struct
{
uint64_t rdn4 : 3;
uint64_t rdn3 : 3;
uint64_t rdn2 : 3;
uint64_t rdn1 : 3;
uint64_t comp_byte : 8;
uint64_t and_mask : 8;
uint64_t nine : 4;
uint64_t adr_bytes : 32;
uint64_t reserved_60_63 : 4;
uint64_t alen4 : 3;
uint64_t alen3 : 3;
uint64_t alen2 : 3;
uint64_t alen1 : 3;
uint64_t reserved_44_47 : 4;
uint64_t adr_byte_num : 4;
uint64_t five : 4;
uint64_t reserved_25_31 : 7;
uint64_t clen3 : 3;
uint64_t clen2 : 3;
uint64_t clen1 : 3;
uint64_t data : 8;
uint64_t reserved_4_7 : 4;
uint64_t eleven : 4;
} cvmx_nand_cmd_wait_status_ale_t;
/**
* NAND BUS_ACQ command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_8_63 : 56;
uint64_t one : 4;
uint64_t fifteen : 4;
} cvmx_nand_cmd_bus_acq_t;
/**
* NAND BUS_REL command definition
*/
typedef struct
{
uint64_t reserved_64_127 : 64;
uint64_t reserved_8_63 : 56;
uint64_t zero : 4;
uint64_t fifteen : 4;
} cvmx_nand_cmd_bus_rel_t;
/**
* NAND command union of all possible commands
*/
typedef union
{
uint64_t u64[2];
cvmx_nand_cmd_nop_t nop;
cvmx_nand_cmd_set_tm_par_t set_tm_par;
cvmx_nand_cmd_wait_t wait;
cvmx_nand_cmd_chip_en_t chip_en;
cvmx_nand_cmd_chip_dis_t chip_dis;
cvmx_nand_cmd_cle_t cle;
cvmx_nand_cmd_ale_t ale;
cvmx_nand_cmd_rd_t rd;
cvmx_nand_cmd_rd_edo_t rd_edo;
cvmx_nand_cmd_wr_t wr;
cvmx_nand_cmd_wait_status_t wait_status;
cvmx_nand_cmd_wait_status_ale_t wait_status_ale;
cvmx_nand_cmd_bus_acq_t bus_acq;
cvmx_nand_cmd_bus_rel_t bus_rel;
struct
{
uint64_t reserved_64_127: 64;
uint64_t reserved_4_63 : 60;
uint64_t op_code : 4;
} s;
} cvmx_nand_cmd_t;
typedef struct __attribute__ ((packed))
{
char onfi[4]; /**< Bytes 0-3: The ASCII characters 'O', 'N', 'F', 'I' */
uint16_t revision_number; /**< Bytes 4-5: ONFI revision number
- 2-15 Reserved (0)
- 1 1 = supports ONFI version 1.0
- 0 Reserved (0) */
uint16_t features; /**< Bytes 6-7: Features supported
- 5-15 Reserved (0)
- 4 1 = supports odd to even page Copyback
- 3 1 = supports interleaved operations
- 2 1 = supports non-sequential page programming
- 1 1 = supports multiple LUN operations
- 0 1 = supports 16-bit data bus width */
uint16_t optional_commands; /**< Bytes 8-9: Optional commands supported
- 6-15 Reserved (0)
- 5 1 = supports Read Unique ID
- 4 1 = supports Copyback
- 3 1 = supports Read Status Enhanced
- 2 1 = supports Get Features and Set Features
- 1 1 = supports Read Cache commands
- 0 1 = supports Page Cache Program command */
uint8_t reserved_10_31[22]; /**< Bytes 10-31: Reserved */
char manufacturer[12]; /**< Bytes 32-43: Device manufacturer (12 ASCII characters) */
char model[20]; /**< Bytes 40-63: Device model (20 ASCII characters) */
uint8_t jedec_id; /**< Byte 64: JEDEC manufacturer ID */
uint16_t date_code; /**< Byte 65-66: Date code */
uint8_t reserved_67_79[13]; /**< Bytes 67-79: Reserved */
uint32_t page_data_bytes; /**< Bytes 80-83: Number of data bytes per page */
uint16_t page_spare_bytes; /**< Bytes 84-85: Number of spare bytes per page */
uint32_t partial_page_data_bytes; /**< Bytes 86-89: Number of data bytes per partial page */
uint16_t partial_page_spare_bytes; /**< Bytes 90-91: Number of spare bytes per partial page */
uint32_t pages_per_block; /**< Bytes 92-95: Number of pages per block */
uint32_t blocks_per_lun; /**< Bytes 96-99: Number of blocks per logical unit (LUN) */
uint8_t number_lun; /**< Byte 100: Number of logical units (LUNs) */
uint8_t address_cycles; /**< Byte 101: Number of address cycles
- 4-7 Column address cycles
- 0-3 Row address cycles */
uint8_t bits_per_cell; /**< Byte 102: Number of bits per cell */
uint16_t bad_block_per_lun; /**< Bytes 103-104: Bad blocks maximum per LUN */
uint16_t block_endurance; /**< Bytes 105-106: Block endurance */
uint8_t good_blocks; /**< Byte 107: Guaranteed valid blocks at beginning of target */
uint16_t good_block_endurance; /**< Bytes 108-109: Block endurance for guaranteed valid blocks */
uint8_t programs_per_page; /**< Byte 110: Number of programs per page */
uint8_t partial_program_attrib; /**< Byte 111: Partial programming attributes
- 5-7 Reserved
- 4 1 = partial page layout is partial page data followed by partial page spare
- 1-3 Reserved
- 0 1 = partial page programming has constraints */
uint8_t bits_ecc; /**< Byte 112: Number of bits ECC correctability */
uint8_t interleaved_address_bits; /**< Byte 113: Number of interleaved address bits
- 4-7 Reserved (0)
- 0-3 Number of interleaved address bits */
uint8_t interleaved_attrib; /**< Byte 114: Interleaved operation attributes
- 4-7 Reserved (0)
- 3 Address restrictions for program cache
- 2 1 = program cache supported
- 1 1 = no block address restrictions
- 0 Overlapped / concurrent interleaving support */
uint8_t reserved_115_127[13]; /**< Bytes 115-127: Reserved (0) */
uint8_t pin_capacitance; /**< Byte 128: I/O pin capacitance */
uint16_t timing_mode; /**< Byte 129-130: Timing mode support
- 6-15 Reserved (0)
- 5 1 = supports timing mode 5
- 4 1 = supports timing mode 4
- 3 1 = supports timing mode 3
- 2 1 = supports timing mode 2
- 1 1 = supports timing mode 1
- 0 1 = supports timing mode 0, shall be 1 */
uint16_t cache_timing_mode; /**< Byte 131-132: Program cache timing mode support
- 6-15 Reserved (0)
- 5 1 = supports timing mode 5
- 4 1 = supports timing mode 4
- 3 1 = supports timing mode 3
- 2 1 = supports timing mode 2
- 1 1 = supports timing mode 1
- 0 1 = supports timing mode 0 */
uint16_t t_prog; /**< Byte 133-134: Maximum page program time (us) */
uint16_t t_bers; /**< Byte 135-136: Maximum block erase time (us) */
uint16_t t_r; /**< Byte 137-148: Maximum page read time (us) */
uint16_t t_ccs; /**< Byte 139-140: Minimum change column setup time (ns) */
uint8_t reserved_141_163[23]; /**< Byte 141-163: Reserved (0) */
uint16_t vendor_revision; /**< Byte 164-165: Vendor specific Revision number */
uint8_t vendor_specific[88]; /**< Byte 166-253: Vendor specific */
uint16_t crc; /**< Byte 254-255: Integrity CRC */
} cvmx_nand_onfi_param_page_t;
/**
* Called to initialize the NAND controller for use. Note that
* you must be running out of L2 or memory and not NAND before
* calling this function.
* When probing for NAND chips, this function attempts to autoconfigure based on the NAND parts detected.
* It currently supports autodetection for ONFI parts (with valid parameter pages), and some Samsung NAND
* parts (decoding ID bits.) If autoconfiguration fails, the defaults set with __set_chip_defaults()
* prior to calling cvmx_nand_initialize() are used.
* If defaults are set and the CVMX_NAND_INITIALIZE_FLAGS_DONT_PROBE flag is provided, the defaults are used
* for all chips in the active_chips mask.
*
* @param flags Optional initialization flags
* If the CVMX_NAND_INITIALIZE_FLAGS_DONT_PROBE flag is passed, chips are not probed,
* and the default parameters (if set with cvmx_nand_set_defaults) are used for all chips
* in the active_chips mask.
* @param active_chips
* Each bit in this parameter represents a chip select that might
* contain NAND flash. Any chip select present in this bitmask may
* be connected to NAND. It is normally safe to pass 0xff here and
* let the API probe all 8 chip selects.
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_initialize(cvmx_nand_initialize_flags_t flags, int active_chips);
/**
* This function may be called before cvmx_nand_initialize to set default values that will be used
* for NAND chips that do not identify themselves in a way that allows autoconfiguration. (ONFI chip with
* missing parameter page, for example.)
* The parameters set by this function will be used by _all_ non-autoconfigured NAND chips.
*
*
* NOTE: This function signature is _NOT_ stable, and will change in the future as required to support
* various NAND chips.
*
* @param page_size page size in bytes
* @param oob_size Out of band size in bytes (per page)
* @param pages_per_block
* number of pages per block
* @param blocks Total number of blocks in device
* @param onfi_timing_mode
* ONFI timing mode
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_set_defaults(int page_size, int oob_size, int pages_per_block, int blocks, int onfi_timing_mode);
/**
* Call to shutdown the NAND controller after all transactions
* are done. In most setups this will never be called.
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_shutdown(void);
/**
* Returns a bitmask representing the chip selects that are
* connected to NAND chips. This can be called after the
* initialize to determine the actual number of NAND chips
* found. Each bit in the response coresponds to a chip select.
*
* @return Zero if no NAND chips were found. Otherwise a bit is set for
* each chip select (1<<chip).
*/
extern int cvmx_nand_get_active_chips(void);
/**
* Override the timing parameters for a NAND chip
*
* @param chip Chip select to override
* @param tim_mult
* @param tim_par
* @param clen
* @param alen
* @param rdn
* @param wrn
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_set_timing(int chip, int tim_mult, int tim_par[7], int clen[4], int alen[4], int rdn[4], int wrn[2]);
/**
* Submit a command to the NAND command queue. Generally this
* will not be used directly. Instead most programs will use the other
* higher level NAND functions.
*
* @param cmd Command to submit
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_submit(cvmx_nand_cmd_t cmd);
/**
* Read a page from NAND. If the buffer has room, the out of band
* data will be included.
*
* @param chip Chip select for NAND flash
* @param nand_address
* Location in NAND to read. See description in file comment
* @param buffer_address
* Physical address to store the result at
* @param buffer_length
* Number of bytes to read
*
* @return Bytes read on success, a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_page_read(int chip, uint64_t nand_address, uint64_t buffer_address, int buffer_length);
/**
* Write a page to NAND. The buffer must contain the entire page
* including the out of band data.
*
* @param chip Chip select for NAND flash
* @param nand_address
* Location in NAND to write. See description in file comment
* @param buffer_address
* Physical address to read the data from
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_page_write(int chip, uint64_t nand_address, uint64_t buffer_address);
/**
* Erase a NAND block. A single block contains multiple pages.
*
* @param chip Chip select for NAND flash
* @param nand_address
* Location in NAND to erase. See description in file comment
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_block_erase(int chip, uint64_t nand_address);
/**
* Read the NAND ID information
*
* @param chip Chip select for NAND flash
* @param nand_address
* NAND address to read ID from. Usually this is either 0x0 or 0x20.
* @param buffer_address
* Physical address to store data in
* @param buffer_length
* Length of the buffer. Usually this is 4 bytes
*
* @return Bytes read on success, a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_read_id(int chip, uint64_t nand_address, uint64_t buffer_address, int buffer_length);
/**
* Read the NAND parameter page
*
* @param chip Chip select for NAND flash
* @param buffer_address
* Physical address to store data in
* @param buffer_length
* Length of the buffer. Usually this is 4 bytes
*
* @return Bytes read on success, a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_read_param_page(int chip, uint64_t buffer_address, int buffer_length);
/**
* Get the status of the NAND flash
*
* @param chip Chip select for NAND flash
*
* @return NAND status or a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_get_status(int chip);
/**
* Get the page size, excluding out of band data. This function
* will return zero for chip selects not connected to NAND.
*
* @param chip Chip select for NAND flash
*
* @return Page size in bytes or a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_get_page_size(int chip);
/**
* Get the OOB size.
*
* @param chip Chip select for NAND flash
*
* @return OOB in bytes or a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_get_oob_size(int chip);
/**
* Get the number of pages per NAND block
*
* @param chip Chip select for NAND flash
*
* @return Numboer of pages in each block or a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_get_pages_per_block(int chip);
/**
* Get the number of blocks in the NAND flash
*
* @param chip Chip select for NAND flash
*
* @return Number of blocks or a negative cvmx_nand_status_t error code on failure
*/
extern int cvmx_nand_get_blocks(int chip);
/**
* Reset the NAND flash
*
* @param chip Chip select for NAND flash
*
* @return Zero on success, a negative cvmx_nand_status_t error code on failure
*/
extern cvmx_nand_status_t cvmx_nand_reset(int chip);
/**
* This function computes the Octeon specific ECC data used by the NAND boot
* feature.
*
* @param block pointer to 256 bytes of data
* @param eccp pointer to where 8 bytes of ECC data will be stored
*/
extern void cvmx_nand_compute_boot_ecc(unsigned char *block, unsigned char *eccp);
extern int cvmx_nand_correct_boot_ecc(uint8_t *block);
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_NAND_H__ */
Reference in New Issue View Git Blame Copy Permalink