[U-Boot] Crash nand init UPMA - NAND flash MPC832x

[U-Boot] Crash nand init UPMA - NAND flash MPC832x

[nanda]

Our development needs NAND to be implemented from u-boot level. And our booting from FLASH depends of NOR flash using the GPCM.

We are facing in the initialization of the nand_init, a crash in the dummy write during the UPM program based on the UPM mode of freescale MPC8323 in the code below:

void UPMA_prog()
{
int i=0;
// OP set to write to RAM array command
*(int *)(MAMR) = 0x10000000;
// Write word to RAM arrays
for (i=0;i

[U-Boot] Crash nand init UPMA - NAND flash MPC832x

[Wolfgang Denk]

Dear "nanda",

In message <20091220172434.48360.qmail@f5mail-237-207.rediffmail.com> you wrote:
> 
> Our development needs NAND to be implemented from u-boot level. And our booting from FLASH depends of NOR flash using the GPCM.
> 
> We are facing in the initialization of the nand_init, a crash in the dummy write during the UPM program based on the UPM mode of freescale MPC8323 in the code below:
> 
> void UPMA_prog()
> {
> int i=0;
> // OP set to write to RAM array command
> *(int *)(MAMR) = 0x10000000;
> // Write word to RAM arrays
> for (i=0;i

There is no such code in mainline U-Boot. I recommend you look for
existing (and working) code examples when porting U-Boot to your
hardware. Note that you should use I/O accessor functions instead of
plain register writes.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Digital computers are themselves more complex than most things people
build: They have very large numbers of states. This makes conceiving,
describing, and testing them hard. Software systems  have  orders-of-
magnitude more states than computers do.           - Fred Brooks, Jr.

[U-Boot] Crash nand init UPMA - NAND flash MPC832x

[KoteswarK]

Hi
What are those "I/O accessor functions"? API present in
./drivers/mtd/nand/fsl_upm.c file??? I am also getting crash while doing
dummy write to NAND_BASE. Code is follows....
void UPMA_prog()
{
    int i=0;
    /* OP set to write to RAM array command*/
    *(int *)(MAMR) = 0x10000000;
    /* Write word to RAM arrays*/
    for (i=0;i<32;i++)
    {
        *(int *)(MDR) = UPMATable[i];

        udelay (100);
        /* *(int *)(MAMR) = 0x10000000;
         *
         *                 *(int *)(MAMR) = 0x10000000+i;*/

        /*dummy write*/
        *(char *)(CFG_NAND_BASE) = 0xff;
    }
.............
}
Rgds
Koteswar

wd wrote:
> 
> Dear "nanda",
> 
> In message <20091220172434.48360.qmail@f5mail-237-207.rediffmail.com> you
> wrote:
>> 
>> Our development needs NAND to be implemented from u-boot level. And our
>> booting from FLASH depends of NOR flash using the GPCM.
>> 
>> We are facing in the initialization of the nand_init, a crash in the
>> dummy write during the UPM program based on the UPM mode of freescale
>> MPC8323 in the code below:
>> 
>> void UPMA_prog()
>> {
>> int i=0;
>> // OP set to write to RAM array command
>> *(int *)(MAMR) = 0x10000000;
>> // Write word to RAM arrays
>> for (i=0;i
> 
> There is no such code in mainline U-Boot. I recommend you look for
> existing (and working) code examples when porting U-Boot to your
> hardware. Note that you should use I/O accessor functions instead of
> plain register writes.
> 
> Best regards,
> 
> Wolfgang Denk
> 
> -- 
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Digital computers are themselves more complex than most things people
> build: They have very large numbers of states. This makes conceiving,
> describing, and testing them hard. Software systems  have  orders-of-
> magnitude more states than computers do.           - Fred Brooks, Jr.
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
> 
> 

-- 
View this message in context: http://old.nabble.com/-U-Boot--Crash-nand-init--UPMA---NAND-flash-MPC832x-tp26865466p26870202.html
Sent from the Uboot - Users mailing list archive at Nabble.com.

[U-Boot] Crash nand init UPMA - NAND flash MPC832x

[Ben Warren]

Koteswar,

A few things:

First of all, please don't top post.

On Sun, Dec 20, 2009 at 9:55 PM, KoteswarK <koti.kelam@gmail.com> wrote:

>
> Hi
> What are those "I/O accessor functions"? API present in
>
Look in include/asm-ppc/io.h.  You'll find lots of wonderful accessor
functions.  They're always preferable to the alternative.

> ./drivers/mtd/nand/fsl_upm.c file??? I am also getting crash while doing
> dummy write to NAND_BASE. Code is follows....
> void UPMA_prog()
> {
>    int i=0;
>    /* OP set to write to RAM array command*/
>    *(int *)(MAMR) = 0x10000000;
>    /* Write word to RAM arrays*/
>    for (i=0;i<32;i++)
>    {
>        *(int *)(MDR) = UPMATable[i];
>
>        udelay (100);
>        /* *(int *)(MAMR) = 0x10000000;
>         *
>         *                 *(int *)(MAMR) = 0x10000000+i;*/
>
>        /*dummy write*/
>        *(char *)(CFG_NAND_BASE) = 0xff;
>    }
> .............
> }
>
Why don't you use the upmconfig() function that's in cpu/mpc83xx/cpu.c?  It
doesn't use I/O accessors either, but I give it better odds of working than
your code.

> Rgds
> Koteswar
>
>
regards,
Ben

[U-Boot] Crash nand init UPMA - NAND flash MPC832x

[nanda]

Hi,
  IO accessor function did not work out for us. But we survived from the crash in the UPM programming, if I move the base address of NAND after the NOR flash base address it programmed the UPM successfully.  


Earlier Configuration ( Crash while programming UPMA):
------------------------------------------------------
CFG_NAND_BASE  0xFA000000 // 64 MB NAND flash 
CFG_FLASH_BASE 0xFE000000 // NOR flash size is 16MB flash


Now Configuration(UPM Programming success case) :
---------------------------------------------------
CFG_NAND_BASE  0xFB000000 // 64 MB NAND flash 
CFG_FLASH_BASE 0xFA000000 // NOR flash size is 16MB flash


Our summarized configuration file
include/configs/MPC832x_RDB.h  is as below

NOR Flash Configuration using Local bus 0:
------------------------------------------

CFG_FLASH_BASE 0xFA000000 // NOR flash size is 16MB flash
CFG_BR0_PRELIM  (CFG_FLASH_BASE |       /* Flash Base address */ \
                (2  
> Our development needs NAND to be implemented from u-boot level. And our booting from FLASH depends of NOR flash using the GPCM.
> 
> We are facing in the initialization of the nand_init, a crash in the dummy write during the UPM program based on the UPM mode of freescale MPC8323 in the code below:
> 
> void UPMA_prog()
> {
> int i=0;
> // OP set to write to RAM array command
> *(int *)(MAMR) = 0x10000000;
> // Write word to RAM arrays
> for (i=0;i

There is no such code in mainline U-Boot. I recommend you look for
existing (and working) code examples when porting U-Boot to your
hardware. Note that you should use I/O accessor functions instead of
plain register writes.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Digital computers are themselves more complex than most things people
build: They have very large numbers of states. This makes conceiving,
describing, and testing them hard. Software systems  have  orders-of-
magnitude more states than computers do.           - Fred Brooks, Jr.

--------------------------------------------------------------------------------


Previous message: [U-Boot] Crash nand init UPMA - NAND flash MPC832x 
Next message: [U-Boot] Crash nand init UPMA - NAND flash MPC832x 
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]