diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 37 |
1 files changed, 37 insertions, 0 deletions
@@ -2862,6 +2862,43 @@ Low Level (hardware related) configuration options: and RPXsuper) to be able to adjust the position of the IMMR register after a reset. +- CONFIG_SYS_CCSRBAR_DEFAULT: + Default (power-on reset) physical address of CCSR on Freescale + PowerPC SOCs. + +- CONFIG_SYS_CCSRBAR: + Virtual address of CCSR. On a 32-bit build, this is typically + the same value as CONFIG_SYS_CCSRBAR_DEFAULT. + + CONFIG_SYS_DEFAULT_IMMR must also be set to this value, + for cross-platform code that uses that macro instead. + +- CONFIG_SYS_CCSRBAR_PHYS: + Physical address of CCSR. CCSR can be relocated to a new + physical address, if desired. In this case, this macro should + be set to that address. Otherwise, it should be set to the + same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR + is typically relocated on 36-bit builds. It is recommended + that this macro be defined via the _HIGH and _LOW macros: + + #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH + * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) + +- CONFIG_SYS_CCSRBAR_PHYS_HIGH: + Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically + either 0 (32-bit build) or 0xF (36-bit build). This macro is + used in assembly code, so it must not contain typecasts or + integer size suffixes (e.g. "ULL"). + +- CONFIG_SYS_CCSRBAR_PHYS_LOW: + Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is + used in assembly code, so it must not contain typecasts or + integer size suffixes (e.g. "ULL"). + +- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: + If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be + forced to a value that ensures that CCSR is not relocated. + - Floppy Disk Support: CONFIG_SYS_FDC_DRIVE_NUMBER |