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| author | James Yang <James.Yang@freescale.com> | 2007-02-07 15:28:04 -0600 |
|---|---|---|
| committer | Jon Loeliger <jdl@freescale.com> | 2007-05-01 12:43:58 -0500 |
| commit | a75af9bfd8fff0499efdbb90601cec5a2afef117 (patch) | |
| tree | fd9fa288f4ae57eeb9d93fc95d2e3b162025b8c4 | |
| parent | c1ab82669d9525998c34e802a12cad662723f22a (diff) | |
| download | u-boot-imx-a75af9bfd8fff0499efdbb90601cec5a2afef117.zip u-boot-imx-a75af9bfd8fff0499efdbb90601cec5a2afef117.tar.gz u-boot-imx-a75af9bfd8fff0499efdbb90601cec5a2afef117.tar.bz2 | |
Conditionalize 8641 Rev1.0 MCM workarounds
Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
| -rw-r--r-- | cpu/mpc86xx/start.S | 42 | ||||
| -rw-r--r-- | include/mpc86xx.h | 9 |
2 files changed, 37 insertions, 14 deletions
diff --git a/cpu/mpc86xx/start.S b/cpu/mpc86xx/start.S index 7406fe2..67c56db 100644 --- a/cpu/mpc86xx/start.S +++ b/cpu/mpc86xx/start.S @@ -241,26 +241,40 @@ 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) - /* setup the law entries */ - bl law_entry + /* -- 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 - /* 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) + /* Set DBCR[ERD_DIS] */ + lis r3,MCM_DBCR@ha + lwz r4,MCM_DBCR@l(r3) oris r4, r4, 0x4000 - stw r4, 0(r3) + stw r4,MCM_DBCR@l(r3) + sync +1: + /* setup the law entries */ + bl law_entry sync + #if (EMULATOR_RUN == 1) /* On the emulator we want to adjust these ASAP */ /* otherwise things are sloooow */ diff --git a/include/mpc86xx.h b/include/mpc86xx.h index bc8ba3f..673bfed 100644 --- a/include/mpc86xx.h +++ b/include/mpc86xx.h @@ -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 */ |