diff options
| author | Timur Tabi <timur@freescale.com> | 2011-08-04 18:03:41 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-09-29 19:01:04 -0500 |
| commit | e46fedfeb214d118b9983d11fcc929ed49f5ccd7 (patch) | |
| tree | 082992bbcb09217952f6f758ef78d74460cc2458 /include/configs/TQM85xx.h | |
| parent | b6c3722dfa98a68236301ddf525dfaf90a95224f (diff) | |
powerpc/85xx: introduce and document CONFIG_SYS_CCSRBAR macros
Introduce the CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW
macros, which contain the high and low portions of CONFIG_SYS_CCSRBAR_PHYS.
This is necessary for the assembly-language code that relocates CCSR, since
the assembler does not understand 64-bit constants.
CONFIG_SYS_CCSRBAR_PHYS is automatically defined from the
CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW macros, so it
should not be defined in a board header file. Similarly,
CONFIG_SYS_CCSRBAR_DEFAULT is defined for each SOC in config_mpc85xx.h, so
it should also not be defined in the board header file.
CONFIG_SYS_CCSR_DO_NOT_RELOCATE is a "short-cut" macro that guarantees that
CONFIG_SYS_CCSRBAR_PHYS is set to the same value as CONFIG_SYS_CCSRBAR_DEFAULT,
and so CCSR will not be relocated.
Since CONFIG_SYS_CCSRBAR_DEFAULT is locked to a fixed value, multi-stage U-Boot
builds (e.g. NAND) are required to relocate CCSR only during the last stage
(i.e. the "real" U-Boot). All other stages should define
CONFIG_SYS_CCSR_DO_NOT_RELOCATE to ensure that CCSR is not relocated.
README is updated with descriptions of all the CONFIG_SYS_CCSRBAR_xxx macros.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'include/configs/TQM85xx.h')
| -rw-r--r-- | include/configs/TQM85xx.h | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/include/configs/TQM85xx.h b/include/configs/TQM85xx.h index b336723f55d..fe6b7281040 100644 --- a/include/configs/TQM85xx.h +++ b/include/configs/TQM85xx.h @@ -130,18 +130,12 @@ #define CONFIG_SYS_MEMTEST_START 0x00000000 #define CONFIG_SYS_MEMTEST_END 0x10000000 -/* - * Base addresses -- Note these are effective addresses where the - * actual resources get mapped (not physical addresses) - */ -#define CONFIG_SYS_CCSRBAR_DEFAULT 0xFF700000 /* CCSRBAR Default */ #ifdef CONFIG_TQM_BIGFLASH -#define CONFIG_SYS_CCSRBAR 0xA0000000 /* relocated CCSRBAR */ -#else /* !CONFIG_TQM_BIGFLASH */ -#define CONFIG_SYS_CCSRBAR 0xE0000000 /* relocated CCSRBAR */ -#endif /* CONFIG_TQM_BIGFLASH */ -#define CONFIG_SYS_CCSRBAR_PHYS CONFIG_SYS_CCSRBAR /* physical addr of CCSRBAR */ -#define CONFIG_SYS_IMMR CONFIG_SYS_CCSRBAR /* PQII uses CONFIG_SYS_IMMR */ +#define CONFIG_SYS_CCSRBAR 0xA0000000 +#else +#define CONFIG_SYS_CCSRBAR 0xE0000000 +#endif +#define CONFIG_SYS_CCSRBAR_PHYS_LOW CONFIG_SYS_CCSRBAR /* * DDR Setup |