diff options
| author | Becky Bruce <beckyb@kernel.crashing.org> | 2011-10-03 19:10:51 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-10-09 17:57:54 -0500 |
| commit | 1605cc9e1bf193021e86048295148c45a185410d (patch) | |
| tree | fdb937e62e3ba818f137971320f10daead763d01 /arch/powerpc/cpu/mpc86xx/cpu_init.c | |
| parent | e3fd652087cd9633a0920667a3920ee757f948e7 (diff) | |
powerpc/mpc86xx: Disable translation for BAT setup
We really shouldn't be overwriting bat registers with translation enabled,
especially when we're executing code using one of them for translating
the current instruction stream. Instead, disable address translation
while doing the final BAT setup.
In order to do this, setup_bats has to move back to asm code, because we
require translation to be enabled to have a stack for C code. The yucky
thing about that is that the assembler doesn't like ULL so we have to
switch to using HIGH/LOW pairs for physical addresses that are > 32 bits
in length.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/cpu/mpc86xx/cpu_init.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc86xx/cpu_init.c | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/arch/powerpc/cpu/mpc86xx/cpu_init.c b/arch/powerpc/cpu/mpc86xx/cpu_init.c index 802202478aa..0375df26f95 100644 --- a/arch/powerpc/cpu/mpc86xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc86xx/cpu_init.c @@ -35,7 +35,6 @@ #include <asm/mp.h> extern void srio_init(void); -void setup_bats(void); DECLARE_GLOBAL_DATA_PTR; @@ -91,33 +90,6 @@ int cpu_init_r(void) return 0; } -/* Set up BAT registers */ -void setup_bats(void) -{ -#if defined(CONFIG_SYS_DBAT0U) && defined(CONFIG_SYS_DBAT0L) - write_bat(DBAT0, CONFIG_SYS_DBAT0U, CONFIG_SYS_DBAT0L); -#endif -#if defined(CONFIG_SYS_IBAT0U) && defined(CONFIG_SYS_IBAT0L) - write_bat(IBAT0, CONFIG_SYS_IBAT0U, CONFIG_SYS_IBAT0L); -#endif - write_bat(DBAT1, CONFIG_SYS_DBAT1U, CONFIG_SYS_DBAT1L); - write_bat(IBAT1, CONFIG_SYS_IBAT1U, CONFIG_SYS_IBAT1L); - write_bat(DBAT2, CONFIG_SYS_DBAT2U, CONFIG_SYS_DBAT2L); - write_bat(IBAT2, CONFIG_SYS_IBAT2U, CONFIG_SYS_IBAT2L); - write_bat(DBAT3, CONFIG_SYS_DBAT3U, CONFIG_SYS_DBAT3L); - write_bat(IBAT3, CONFIG_SYS_IBAT3U, CONFIG_SYS_IBAT3L); - write_bat(DBAT4, CONFIG_SYS_DBAT4U, CONFIG_SYS_DBAT4L); - write_bat(IBAT4, CONFIG_SYS_IBAT4U, CONFIG_SYS_IBAT4L); - write_bat(DBAT5, CONFIG_SYS_DBAT5U, CONFIG_SYS_DBAT5L); - write_bat(IBAT5, CONFIG_SYS_IBAT5U, CONFIG_SYS_IBAT5L); - write_bat(DBAT6, CONFIG_SYS_DBAT6U, CONFIG_SYS_DBAT6L); - write_bat(IBAT6, CONFIG_SYS_IBAT6U, CONFIG_SYS_IBAT6L); - write_bat(DBAT7, CONFIG_SYS_DBAT7U, CONFIG_SYS_DBAT7L); - write_bat(IBAT7, CONFIG_SYS_IBAT7U, CONFIG_SYS_IBAT7L); - - return; -} - #ifdef CONFIG_ADDR_MAP /* Initialize address mapping array */ void init_addr_map(void) |