mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 18:09:03 +09:00
64134f0112
With recent toolchain versions, some boards would not build because or errors like this one (here for ocotea board when building with ELDK 4.2 beta): ppc_4xx-ld: section .bootpg [fffff000 -> fffff23b] overlaps section .bss [fffee900 -> fffff8ab] For many boards, the .bss section is big enough that it wraps around at the end of the address space (0xFFFFFFFF), so the problem will not be visible unless you use a 64 bit tool chain for development. On some boards however, changes to the code size (due to different optimizations) we bail out with section overlaps like above. The fix is to add the NOLOAD attribute to the .bss and .sbss sections, telling the linker that .bss does not consume any space in the image. Signed-off-by: Wolfgang Denk <wd@denx.de> |
||
|---|---|---|
| .. | ||
| config.mk | ||
| hcu4.c | ||
| Makefile | ||
| README.txt | ||
| u-boot.lds | ||
HCU4 Configuration Details Memory Bank 0 -- Flash chip --------------------------- 0xfff00000 - 0xffffffff The flash chip is really only 512Kbytes, but the high address bit of the 1Meg region is ignored, so the flash is replicated through the region. Thus, this is consistent with a flash base address 0xfff80000. The placement at the end is to be consistent with reset behavior, where the processor itself initially uses this bus to load the branch vector and start running. On-Chip Memory -------------- 0xf4000000 - 0xf4000fff The 405GPr includes a 4K on-chip memory that can be placed however software chooses. I choose to place the memory at this address, to keep it out of the cachable areas. Internal Peripherals -------------------- 0xef600300 - 0xef6008ff These are scattered various peripherals internal to the PPC405GPr chip. Chip-Select 2: Flash Memory --------------------------- 0x70000000 Chip-Select 3: CAN Interface ---------------------------- 0x7800000 Chip-Select 4: IMC-bus standard ------------------------------- Our IO-Bus (slow version) Chip-Select 5: IMC-bus fast (inactive) -------------------------------------- Our IO-Bus (fast, but not yet use) Memory Bank 1 -- SDRAM ------------------------------------- 0x00000000 - 0x1ffffff # Default 32 MB