[U-Boot] M29W256GL + WEIM in uboot

[U-Boot] M29W256GL + WEIM in uboot

[Francisco Muñoz]

Hello, Im new to all of this, but I 've  been reading most of the post
related to the M29w256 numonyx and the u-boot documentation without
any success :(

Im booting from MMC card and I want to parallel nor to be probed by
cfi, but I have not succeeded since the uboot code freezes when at the
beginning of the first "flash_cmd_write" in cfi_flash.c

       /* Issue FLASH reset command */
        flash_cmd_reset(info);

The CS0_BASE_ADDR  has an start address matching  #define
WEIM_ARB_BASE_ADDR              0x08000000     , however the range of
the WEIM interface register settings are between 021B_8000 --
021B_8098.

Many board files has the WEIM CS0 as the start of the registers and I
think this is why the NOR configuration is a matter of config settings
like the ones below.

#define CONFIG_SYS_FLASH_BASE           CS0_BASE_ADDR
#define CONFIG_SYS_MAX_FLASH_BANKS 1
#define CONFIG_SYS_MAX_FLASH_SECT 256
#define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_16BIT
#define CONFIG_SYS_FLASH_CFI_AMD_RESET 1

/* Monitor at beginning of flash */
#define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_FLASH_BASE
#define CONFIG_SYS_MONITOR_LEN          0x40000         /* Reserve 256KiB */

#define CONFIG_ENV_SECT_SIZE   0x20000
#define CONFIG_ENV_SIZE         CONFIG_ENV_SECT_SIZE
#define CONFIG_ENV_ADDR         (CONFIG_SYS_FLASH_BASE + 0x40000)

/* Address and size of Redundant Environment Sector     */
#define CONFIG_ENV_OFFSET_REDUND        (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
#define CONFIG_ENV_SIZE_REDUND  CONFIG_ENV_SIZE


If you could give me some help so that at least I could send write
commands to the chip without hang pls...

Regards,
Francisco

[U-Boot] M29W256GL + WEIM in uboot

[Marek Vasut]

> Hello, Im new to all of this, but I 've  been reading most of the post
> related to the M29w256 numonyx and the u-boot documentation without
> any success :(
> 
> Im booting from MMC card and I want to parallel nor to be probed by
> cfi, but I have not succeeded since the uboot code freezes when at the
> beginning of the first "flash_cmd_write" in cfi_flash.c
> 
>        /* Issue FLASH reset command */
>         flash_cmd_reset(info);
> 
> The CS0_BASE_ADDR  has an start address matching  #define
> WEIM_ARB_BASE_ADDR              0x08000000     , however the range of
> the WEIM interface register settings are between 021B_8000 --
> 021B_8098.
> 
> Many board files has the WEIM CS0 as the start of the registers and I
> think this is why the NOR configuration is a matter of config settings
> like the ones below.
> 
> #define CONFIG_SYS_FLASH_BASE           CS0_BASE_ADDR
> #define CONFIG_SYS_MAX_FLASH_BANKS 1
> #define CONFIG_SYS_MAX_FLASH_SECT 256
> #define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_16BIT
> #define CONFIG_SYS_FLASH_CFI_AMD_RESET 1
> 
> /* Monitor at beginning of flash */
> #define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_FLASH_BASE
> #define CONFIG_SYS_MONITOR_LEN          0x40000         /* Reserve 256KiB
> */
> 
> #define CONFIG_ENV_SECT_SIZE   0x20000
> #define CONFIG_ENV_SIZE         CONFIG_ENV_SECT_SIZE
> #define CONFIG_ENV_ADDR         (CONFIG_SYS_FLASH_BASE + 0x40000)
> 
> /* Address and size of Redundant Environment Sector     */
> #define CONFIG_ENV_OFFSET_REDUND        (CONFIG_ENV_OFFSET +
> CONFIG_ENV_SIZE) #define CONFIG_ENV_SIZE_REDUND  CONFIG_ENV_SIZE
> 
> 
> If you could give me some help so that at least I could send write
> commands to the chip without hang pls...
> 

You're pointing CFI to configuration registers, you need to point it to where 
the NOR flash is MMAPed. If it's not MMAPed, this isn't your driver.
M

[U-Boot] M29W256GL + WEIM in uboot

[Marek Vasut]

> Marek,
> 
> Could you please go slower on this. Please point me what do I have to
> read because Im not getting the meaning of MMAPED in uboot and how to
> related this to my NOR flash.

Can you please at least obey basic rules of using a mailing list ?

DO NOT TOP-POST
DO NOT DROP IT FROM CC

MMAPed == memory mapped.

M

> 
> Regards,
> Francisco.
> 
> On Mon, Feb 13, 2012 at 2:52 PM, Marek Vasut <marek.vasut@gmail.com> wrote:
> >> Hello, Im new to all of this, but I 've  been reading most of the post
> >> related to the M29w256 numonyx and the u-boot documentation without
> >> any success :(
> >> 
> >> Im booting from MMC card and I want to parallel nor to be probed by
> >> cfi, but I have not succeeded since the uboot code freezes when at the
> >> beginning of the Marekfirst "flash_cmd_write" in cfi_flash.c
> >> 
> >>        /* Issue FLASH reset command */
> >>         flash_cmd_reset(info);
> >> 
> >> The CS0_BASE_ADDR  has an start address matching  #define
> >> WEIM_ARB_BASE_ADDR              0x08000000     , however the range of
> >> the WEIM interface register settings are between 021B_8000 --
> >> 021B_8098.
> >> 
> >> Many board files has the WEIM CS0 as the start of the registers and I
> >> think this is why the NOR configuration is a matter of config settings
> >> like the ones below.
> >> 
> >> #define CONFIG_SYS_FLASH_BASE           CS0_BASE_ADDR
> >> #define CONFIG_SYS_MAX_FLASH_BANKS 1
> >> #define CONFIG_SYS_MAX_FLASH_SECT 256
> >> #define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_16BIT
> >> #define CONFIG_SYS_FLASH_CFI_AMD_RESET 1
> >> 
> >> /* Monitor at beginning of flash */
> >> #define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_FLASH_BASE
> >> #define CONFIG_SYS_MONITOR_LEN          0x40000         /* Reserve
> >> 256KiB */
> >> 
> >> #define CONFIG_ENV_SECT_SIZE   0x20000
> >> #define CONFIG_ENV_SIZE         CONFIG_ENV_SECT_SIZE
> >> #define CONFIG_ENV_ADDR         (CONFIG_SYS_FLASH_BASE + 0x40000)
> >> 
> >> /* Address and size of Redundant Environment Sector     */
> >> #define CONFIG_ENV_OFFSET_REDUND        (CONFIG_ENV_OFFSET +
> >> CONFIG_ENV_SIZE) #define CONFIG_ENV_SIZE_REDUND  CONFIG_ENV_SIZE
> >> 
> >> 
> >> If you could give me some help so that at least I could send write
> >> commands to the chip without hang pls...
> > 
> > You're pointing CFI to configuration registers, you need to point it to
> > where the NOR flash is MMAPed. If it's not MMAPed, this isn't your
> > driver. M

[U-Boot] M29W256GL + WEIM in uboot

[Fabio Estevam]

On Mon, Feb 13, 2012 at 6:30 PM, Francisco Mu?oz
<francisco.missael@gmail.com> wrote:
> Hello, Im new to all of this, but I 've ?been reading most of the post
> related to the M29w256 numonyx and the u-boot documentation without
> any success :(

Which SoC are you using and which board?

[U-Boot] M29W256GL + WEIM in uboot

[Francisco Muñoz]

On Mon, Feb 13, 2012 at 3:33 PM, Fabio Estevam <festevam@gmail.com> wrote:
> On Mon, Feb 13, 2012 at 6:30 PM, Francisco Mu?oz
> <francisco.missael@gmail.com> wrote:
>> Hello, Im new to all of this, but I 've ?been reading most of the post
>> related to the M29w256 numonyx and the u-boot documentation without
>> any success :(
>
> Which SoC are you using and which board?

Hey Fabio its me Francisco.
Im with the im6X

[U-Boot] M29W256GL + WEIM in uboot

[Fabio Estevam]

On Mon, Feb 13, 2012 at 7:39 PM, Francisco Mu?oz
<francisco.missael@gmail.com> wrote:

> Im with the im6X

Take a look for mx31ads.c as an example. You need to setup the chip
select like in mxc_setup_weimcs() function.

BTW, I don't see any current mx6 board with NOR in mainline U-boot.

[U-Boot] M29W256GL + WEIM in uboot

[Francisco Muñoz]

On Mon, Feb 13, 2012 at 4:59 PM, Fabio Estevam <festevam@gmail.com> wrote:
> On Mon, Feb 13, 2012 at 7:39 PM, Francisco Mu?oz
> <francisco.missael@gmail.com> wrote:
>
>> Im with the im6X
>
> Take a look for mx31ads.c as an example. You need to setup the chip
> select like in mxc_setup_weimcs() function.
>
> BTW, I don't see any current mx6 board with NOR in mainline U-boot.

I already did the reset with this lines in the
board/freescale/mx6q_boardsabreauto.c     board_init()

  writel(0x00020001,WEIM_BASE_ADDR);
  writel(0x1C022000,WEIM_BASE_ADDR + 0x8);
  writel(0x0804a240,WEIM_BASE_ADDR + 0x10);

However, the uboot code hangs when i runt on the board
 */
1896 ulong flash_get_size (phys_addr_t base, int banknum)
1897 {
1898         flash_info_t *info = &flash_info[banknum];
1899         int i, j;
1900         flash_sect_t sect_cnt;
1901         phys_addr_t sector;
1902         unsigned long tmp;
1903         int size_ratio;
1904         uchar num_erase_regions;
1905         int erase_region_size;
1906         int erase_region_count;
1907         struct cfi_qry qry;
1908         unsigned long max_size;
1909
1910         memset(&qry, 0, sizeof(qry));
1911
1912         info->ext_addr = 0;
1913         info->cfi_version = 0;
1914 #ifdef CONFIG_SYS_FLASH_PROTECTION
1915         info->legacy_unlock = 0;
1916 #endif
1917
1918         info->start[0] = (ulong)map_physmem(base,
info->portwidth, MAP_NOCACHE);
1919         printf("Estamos ok con el pointer malo %u \n",info->portwidth);
1920         if (flash_detect_cfi (info, &qry))
<--------------------------------------------------------------------------------------------
It hangs in the reset commands             cfi_flash.c

Regards,
Francisco

[U-Boot] M29W256GL + WEIM in uboot

[Fabio Estevam]

On Mon, Feb 13, 2012 at 9:25 PM, Francisco Mu?oz
<francisco.missael@gmail.com> wrote:

> I already did the reset with this lines in the
> board/freescale/mx6q_boardsabreauto.c ? ? board_init()

Hmm...this board is not in mainline U-boot, so this is not the correct
place to ask for assistance.