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[PATCH] PPC4xx start.S: Fix for processor errata

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Fixed cpu/ppc4xx/start.S for 440EPx Errata: further corrects PPC440EPx
errata 1.12: 440_33 by moving patch up in code.

Signed-off-by: Jeff Mann <mannj@embeddedplanet.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Stefan Roese 2006-11-22 13:20:50 +01:00
parent 4ef6251403
commit 2053283304
1 changed files with 12 additions and 11 deletions
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23
cpu/ppc4xx/start.S
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@ -204,6 +204,18 @@ _start_440:
mfspr r1,mcsr
mtspr mcsr,r1
#endif
/*----------------------------------------------------------------*/
/* CCR0 init */
/*----------------------------------------------------------------*/
/* Disable store gathering & broadcast, guarantee inst/data
* cache block touch, force load/store alignment
* (see errata 1.12: 440_33)
*/
lis r1,0x0030 /* store gathering & broadcast disable */
ori r1,r1,0x6000 /* cache touch */
mtspr ccr0,r1
/*----------------------------------------------------------------*/
/* Initialize debug */
/*----------------------------------------------------------------*/
@ -225,17 +237,6 @@ _start_440:
mtspr dbsr,r1 /* Clear all valid bits */
skip_debug_init:
/*----------------------------------------------------------------*/
/* CCR0 init */
/*----------------------------------------------------------------*/
/* Disable store gathering & broadcast, guarantee inst/data
* cache block touch, force load/store alignment
* (see errata 1.12: 440_33)
*/
lis r1,0x0030 /* store gathering & broadcast disable */
ori r1,r1,0x6000 /* cache touch */
mtspr ccr0,r1
#if defined (CONFIG_440SPE)
/*----------------------------------------------------------------+
| Initialize Core Configuration Reg1.