Port ok6410 uboot nandflash

Port ok6410 uboot nandflash
1.4 Nandflash Port

First, solve the preceding error and modify arch/arm/cpu/arm1176/cloud64xx/timer. c.

Static ulong timer_load_val; change to DECLARE_GLOBAL_DATA_PTR;

Delete the following two definitions:

/* Internal tick units */

/* Last decremneter snapshot */

Static unsigned long lastdec;

/* Monotonic incrementing timer */

Static unsigned long timestamp;

Next we will:

Timers-> Tsung 0 = PRESCALER <8;

If (timer_load_val = 0 ){

Timer_load_val = get_PCLK ()/PRESCALER * (100/4);/* 100 s */

Timers-> TCFG1 = (timers-> TCFG1 &~ 0xf0000) | 0x20000;

}

To:

Timers-> Tsung 0 = PRESCALER <8;

 

Gd-> timer_rate_hz = get_PCLK ()/PRESCALER * (100/4);/* 100 s */

Timers-> TCFG1 = (timers-> TCFG1 &~ 0xf0000) | 0x20000;

Change lastdec = timers-> TCNTB4 = timer_load_val;:

Gd-> lastinc = timers-> TCNTB4 = gd-> timer_rate_hz;

Change timestamp = 0; to gd-> timer_reset_value = 0;

Unsigned long get_ticks (void)

{

Ulong now = read_timer ();

 

If (lastdec> = now ){

/* Normal mode */

Timestamp + = lastdec-now;

} Else {

/* We have anoverflow ...*/

Timestamp + = lastdec + timer_load_val-now;

}

Lastdec = now;

 

Return timestamp;

}

To:

Unsigned long get_ticks (void)

{

Ulong now = read_timer ();

 

If (gd-> lastinc> = now ){

/* Normal mode */

Gd-> timer_reset_value + = gd-> lastinc-now;

} Else {

/* We have anoverflow ...*/

Gd-> timer_reset_value + = gd-> lastinc + gd-> timer_rate_hz-now;

}

Gd-> lastinc = now;

 

Returngd-> timer_reset_value;

}

Convert ulong get_tbclk (void)

{

/* We overwriting in 100 s */

Return (ulong) (timer_load_val/100 );

}

 

Ulong get_timer_masked (void)

{

Unsigned long res = get_ticks ();

Do_div (res, (timer_load_val/(100 * CONFIG_SYS_HZ )));

Return res;

}

To:

Ulong get_tbclk (void)

{

/* We overwriting in 100 s */

Return (ulong) (gd-> timer_rate_hz/100 );

}

 

Ulong get_timer_masked (void)

{

Unsigned long res = get_ticks ();

// Do_div (res, (timer_load_val/(100 * CONFIG_SYS_HZ )));

Return res;

}

Modify nand_spl/board/samsung/ok6410/ok6410_nand_spl.c

Void board_init_f (unsigned long bootflag)

{

Relocate_code (CONFIG_SYS_TEXT_BASE-TOTAL_MALLOC_LEN, NULL,

CONFIG_SYS_TEXT_BASE );

}

Changed:

Void board_init_f (unsigned long bootflag)

{

Relocate_code (8*1024, NULL,

CONFIG_SYS_TEXT_BASE );

}

Modify the configuration size of bl1: nand_spl/board/samsung/ok6410/config. mk

# PAD_TO used to generate a 4 kByte binary needed for the combined image

#-> PAD_TO = maid + 4096

PAD_TO: = $ (shell expr $ [$ (CONFIG_SYS_TEXT_BASE) + 4096])

Change

# PAD_TO used to generate a 8 kByte binary needed for the combined image

#-> PAD_TO = maid + 8192

PAD_TO: = $ (shell expr $ (CONFIG_SYS_TEXT_BASE) + 8192)

Re-compile and burn:

 

The Nandflash initialization process is as follows:

Board_init_r à nand _ init à nand _ init_chip à board _ nand_init à nand _ scan à

Nand_scan_ident à nand _ scan_tail à nand _ register

The connected arrays nand_flash_ids [] and nand_manuf_ids [] are defined in the drivers/mtd/nand/nand_ids.c file.

Add the ok6410 nandflash model:

/* 16 Gigabit */

{NAND 2GiB 1, 8V8-bit, 0xA5, 0, 2048, 0, LP_OPTIONS },

{NAND 2GiB 3, 3V8-bit, 0xD5, 0, 2048, 0, LP_OPTIONS },

{NAND 2GiB 3, 3V8-bit, 0x38,409 6, 2048,4096*128, LP_OPTIONS },

{NAND 2GiB 1, 8V16-bit, 0xB5, 0, 2048, 0, LP_OPTIONS16 },

{NAND 2GiB 3, 3V16-bit, 0xC5, 0, 2048, 0, LP_OPTIONS16 },

The meaning of each field is as follows: note that IDcode needs to be tested by yourself.

Name. ID code, pagesize, chipsize in MegaByte, eraseblock size, options

Re-compile and burn:

Here nandflash uses 4-bit ecc verification. If you are interested, you can implement 8-bit ecc verification by yourself. 6410 supports 8-bit ecc.