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- stm32 flash driver correctly handles early silicon 

git-svn-id: svn://svn.berlios.de/openocd/trunk@808 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
ntfreak 2008-07-15 10:21:43 +00:00
parent acce2bcccb
commit b979c22bcc
1 changed files with 35 additions and 29 deletions
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64
src/flash/stm32x.c
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@ -630,41 +630,47 @@ int stm32x_probe(struct flash_bank_s *bank)
target_read_u32(target, 0xE0042000, &device_id);
LOG_INFO( "device id = 0x%08x", device_id );
switch (device_id & 0x7ff)
{
case 0x410:
/* medium density - we have 1k pages
* 4 pages for a protection area */
page_size = 1024;
stm32x_info->ppage_size = 4;
break;
case 0x414:
/* high density - we have 2k pages
* 2 pages for a protection area */
page_size = 2048;
stm32x_info->ppage_size = 2;
break;
default:
LOG_WARNING( "Cannot identify target as a STM32 family." );
return ERROR_FLASH_OPERATION_FAILED;
}
/* get flash size from target */
if (target_read_u16(target, 0x1FFFF7E0, &num_pages) != ERROR_OK)
{
/* failed reading flash size, default to 128k */
LOG_WARNING( "STM32 flash size failed, probe inaccurate - assuming 128k flash" );
num_pages = 128;
/* failed reading flash size, default to max target family */
num_pages = 0xffff;
}
/* check for early silicon rev A */
if ((device_id >> 16) == 0 )
if ((device_id & 0x7ff) == 0x410)
{
/* number of sectors incorrect on revA */
LOG_WARNING( "STM32 Rev A Silicon detected, probe inaccurate - assuming 128k flash" );
num_pages = 128;
/* medium density - we have 1k pages
* 4 pages for a protection area */
page_size = 1024;
stm32x_info->ppage_size = 4;
/* check for early silicon */
if (num_pages == 0xffff)
{
/* number of sectors incorrect on revA */
LOG_WARNING( "STM32 flash size failed, probe inaccurate - assuming 128k flash" );
num_pages = 128;
}
}
else if ((device_id & 0x7ff) == 0x414)
{
/* high density - we have 2k pages
* 2 pages for a protection area */
page_size = 2048;
stm32x_info->ppage_size = 2;
/* check for early silicon */
if (num_pages == 0xffff)
{
/* number of sectors incorrect on revZ */
LOG_WARNING( "STM32 flash size failed, probe inaccurate - assuming 512k flash" );
num_pages = 512;
}
}
else
{
LOG_WARNING( "Cannot identify target as a STM32 family." );
return ERROR_FLASH_OPERATION_FAILED;
}
LOG_INFO( "flash size = %dkbytes", num_pages );