Hello wind_embedded,
wind_embedded wrote:
> Hello:
>
> Now I port u-boot into mpc8247, I need everyone's help, thanks!
>
> my board configuration is following:
> chip select chip size address
> CS0 AM29LV040B 512K 0xfff00000
> CS1 S29GL256P 64M 0xff800000
> CS2 SDRAM 256M 0x00000000
>
> Before I use VxWorks, it works fine. When I port u-boot, my project
> based on IDS8247. I changed configuration in IDS8247.h and updated
> flash.c, after I compiled u-boot, I burned u-boot.bin into AM29LV040B.
> Console output(DEBUG is defined):
> CPU: MPC8247 (HiP7 Rev 14, Mask 1.0 1K50M) at 400 MHz
Which version of u-boot do you use?
> Board: ADS 8247
> I2C: ready
> DRAM: 128 MB
> Top of RAM usable for U-Boot at: 08000000
> Reserving 160k for U-Boot at: 07fd7000
> Reserving 192k for malloc() at: 07fa7000
> Reserving 76 Bytes for Board Info at: 07fa6fb4
> Reserving 72 Bytes for Global Data at: 07fa6f6c
> Stack Pointer at: 07fa6f48
> New Stack Pointer is: 07fa6f48
> Now running in RAM - U-Boot at: 07fd7000
> FLASH: Manuf. ID @ 0xfff00000: 0x00000004
> ## Unknown FLASH on Bank 0 - Size = 0x00000000 = 0 MB
> flash_protect ON: from 0xFFF00000 to 0xFFF22FFF
> flash_protect ON: from 0xFFF70000 to 0xFFF7FFFF
> *** failed ***
> ### ERROR ### Please RESET the board ###
>
> I found the manufacture ID of flash is error , it should be 0x01,
but
> it is 0x04, it is the first byte that u-boot.bin file was burned into
> AM29LV040. In my flash.c file, the code that I get manufacture ID as
> following:
> ...
> flash_cmd_autoselect (base);
> mfrId= U8_READ (base);
> flash_cmd_reset (base);
Hmm.. what code is this? It looks to me, that you don;t use
the CFI drvier! Please try this driver to access your flash.
bye,
Heiko
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
This code are section of flash_get_size function in flash.c. the related
functions are as following:
static ulong flash_get_size (volatile uchar * addr, flash_info_t * info)
{
ulong base;
uchar value;
base = (ulong) addr;
flash_cmd_autoselect (base);
asm("sync");
value = U8_READ (base);
flash_cmd_reset (base);
debug ("Manuf. ID @ 0x%08lx: 0x%02x\n", (ulong)addr, value);
switch (value) {
case (uchar) AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
addr[0] = (uchar) 0x00FF00FF; /* restore read mode */
return (0); /* no or unknown flash
*/
}
flash_cmd_autoselect (base);
asm("sync");
value = U8_READ (base + 1);
flash_cmd_reset (base);
debug ("Device ID @ 0x%08lx: 0x%02x\n", (ulong)(&addr[0x1]),
value);
switch (value) {
case (uchar) AMD_ID_LV040B:
info->flash_id += FLASH_AM040;
info->sector_count = 8;
info->size = 0x00080000;
break; /* => 512K */
default:
info->flash_id = FLASH_UNKNOWN;
break;
}
if (info->sector_count > CFG_MAX_FLASH_SECT) {
printf ("** ERROR: sector count %d > max (%d) **\n",
info->sector_count, CFG_MAX_FLASH_SECT);
info->sector_count = CFG_MAX_FLASH_SECT;
}
return (info->size);
}
unsigned long flash_init (void)
{
unsigned long size_b0;
int i;
volatile immap_t * immr = (immap_t *)CFG_IMMR;
volatile memctl8260_t *memctl = &immr->im_memctl;
/* Init: no FLASHes known */
for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
/* Static FLASH Bank configuration here - FIXME XXX */
size_b0 = flash_get_size ((volatile uchar *) CFG_FLASH_BASE,
&flash_info[0]);
if (flash_info[0].flash_id == FLASH_UNKNOWN) {
printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx =
%ld MB\n",
size_b0, size_b0 << 20);
}
memctl->memc_or0 = 0xfff00866;
memctl->memc_br0 = 0xfff00801;
flash_get_offsets (0xfff00000, &flash_info[0]);
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
/* monitor protection ON by default */
(void) flash_protect (FLAG_PROTECT_SET,
CFG_MONITOR_BASE,
CFG_MONITOR_BASE + monitor_flash_len -
1,
&flash_info[0]);
#endif
#ifdef CFG_ENV_IS_IN_FLASH
/* ENV protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CFG_ENV_ADDR,
CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
&flash_info[0]);
#endif
flash_info[0].size = size_b0;
return (size_b0);
}
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
