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Conditionalize 8641 Rev1.0 MCM workarounds 

Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
This commit is contained in:
James Yang 2007-02-07 15:28:04 -06:00 committed by Jon Loeliger
parent c1ab82669d
commit a75af9bfd8
2 changed files with 37 additions and 14 deletions
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42
cpu/mpc86xx/start.S
View File

@ -241,25 +241,39 @@ in_flash:
bl setup_ccsrbar
#endif
/* Fix for SMP linux - Changing arbitration to round-robin */
lis r3, CFG_CCSRBAR@h
ori r3, r3, 0x1000
xor r4, r4, r4
li r4, 0x1000
stw r4, 0(r3)
/* -- MPC8641 Rev 1.0 MCM Errata fixups -- */
/* skip fixups if not Rev 1.0 */
mfspr r4, SVR
rlwinm r4,r4,0,24,31
cmpwi r4,0x10
bne 1f
lis r3,MCM_ABCR@ha
lwz r4,MCM_ABCR@l(r3) /* ABCR -> r4 */
/* set ABCR[A_STRM_CNT] = 0 */
rlwinm r4,r4,0,0,29
/* set ABCR[ARB_POLICY] to 0x1 (round-robin) */
addi r0,r0,1
rlwimi r4,r0,12,18,19
stw r4,MCM_ABCR@l(r3) /* r4 -> ABCR */
sync
/* Set DBCR[ERD_DIS] */
lis r3,MCM_DBCR@ha
lwz r4,MCM_DBCR@l(r3)
oris r4, r4, 0x4000
stw r4,MCM_DBCR@l(r3)
sync
1:
/* setup the law entries */
bl law_entry
sync
/* Don't use this feature due to bug in 8641D PD4 */
/* Disable ERD_DIS */
lis r3, CFG_CCSRBAR@h
ori r3, r3, 0x1008
lwz r4, 0(r3)
oris r4, r4, 0x4000
stw r4, 0(r3)
sync
#if (EMULATOR_RUN == 1)
/* On the emulator we want to adjust these ASAP */

9
include/mpc86xx.h
View File

@ -9,6 +9,15 @@
#define EXC_OFF_SYS_RESET 0x0100 /* System reset offset */
/*
* platform register addresses
*/
#define GUTS_SVR (CFG_CCSRBAR + 0xE00A4)
#define MCM_ABCR (CFG_CCSRBAR + 0x01000)
#define MCM_DBCR (CFG_CCSRBAR + 0x01008)
/*
* l2cr values. Look in config_<BOARD>.h for the actual setup
*/