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mpc83xx: Set guarded bit on BAT that covers the end of the address space

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The mpc8313erdb board currently sets DBAT6 to cover all of the final 256MiB of
address space; however, not all of this space is covered by a device.  In
particular, flash sits at 0xfe000000-0xfe7fffff, and nothing is mapped
at the far end of the address space.

In zlib, there is a loop that references p[-1] if p is non-NULL.  Under
some circumstances, this leads to the CPU speculatively loading from
0xfffffff8 if p is NULL.  This leads to a machine check.

Signed-off-by: Scott Wood <scottwood@freescale.com>

continuation to the remaining mpc83xx boards that suffer from the same problem.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Scott Wood 2009-03-31 17:49:36 -05:00 committed by Kim Phillips
parent ed9953d690
commit c123098035
6 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/configs/MPC8313ERDB.h
View File

@ -544,7 +544,7 @@
#define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | BATU_VP)
/* SDRAM @ 0xF0000000, stack in DCACHE 0xFDF00000 & FLASH @ 0xFE000000 */
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10)
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_GUARDEDSTORAGE)
#define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)
#define CONFIG_SYS_IBAT7L (0)

3
include/configs/MPC8349EMDS.h
View File

@ -647,7 +647,8 @@
#define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | BATU_VP)
/* SDRAM @ 0xF0000000, stack in DCACHE 0xFDF00000 & FLASH @ 0xFE000000 */
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE)
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE | \
BATL_GUARDEDSTORAGE)
#define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)
#define CONFIG_SYS_IBAT7L (0)

3
include/configs/MPC8349ITX.h
View File

@ -615,7 +615,8 @@ boards, we say we have two, but don't display a message if we find only one. */
#define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | BATU_VP)
/* SDRAM @ 0xF0000000, stack in DCACHE 0xFDF00000 & FLASH @ 0xFE000000 */
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE)
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE | \
BATL_GUARDEDSTORAGE)
#define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)
#define CONFIG_SYS_IBAT7L 0

3
include/configs/MVBLM7.h
View File

@ -360,7 +360,8 @@
#define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | BATU_VP)
/* stack in DCACHE 0xFDF00000 & FLASH @ 0xFF800000 */
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE)
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE | \
BATL_GUARDEDSTORAGE)
#define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)
#define CONFIG_SYS_IBAT7L 0
#define CONFIG_SYS_IBAT7U 0

2
include/configs/SIMPC8313.h
View File

@ -437,7 +437,7 @@
#define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | BATU_VP)
/* SDRAM @ 0xF0000000, stack in DCACHE 0xFDF00000 & FLASH @ 0xFE000000 */
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10)
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_GUARDEDSTORAGE)
#define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)
#define CONFIG_SYS_IBAT7L (0)

3
include/configs/sbc8349.h
View File

@ -569,7 +569,8 @@
#define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | BATU_VP)
/* SDRAM @ 0xF0000000, stack in DCACHE 0xFDF00000 & FLASH @ 0xFE000000 */
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE)
#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | BATL_MEMCOHERENCE | \
BATL_GUARDEDSTORAGE)
#define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | BATU_VP)
#define CONFIG_SYS_IBAT7L (0)