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Blackfin arch: fix bug - detect 0.1 silicon revision BF527-EZKIT as 0.0 version

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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Michael Hennerich 2008-07-19 16:56:53 +08:00 committed by Bryan Wu
parent cc2e16bd35
commit 0138da6101
1 changed files with 20 additions and 1 deletions
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21
include/asm-blackfin/processor.h
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@ -112,7 +112,26 @@ unsigned long get_wchan(struct task_struct *p);
static inline uint32_t __pure bfin_revid(void)
{
/* stored in the upper 4 bits */
return bfin_read_CHIPID() >> 28;
uint32_t revid = bfin_read_CHIPID() >> 28;
#ifdef CONFIG_BF52x
/* ANOMALY_05000357
* Incorrect Revision Number in DSPID Register
*/
if (revid == 0)
switch (bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI)) {
case 0x0010:
revid = 0;
break;
case 0x2796:
revid = 1;
break;
default:
revid = 0xFFFF;
break;
}
#endif
return revid;
}
static inline uint32_t __pure bfin_compiled_revid(void)