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https://github.com/AsahiLinux/u-boot
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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> |
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| .. | ||
| config.mk | ||
| flash.c | ||
| host_bridge.c | ||
| init.S | ||
| jse.c | ||
| jse_priv.h | ||
| Makefile | ||
| README.txt | ||
| sdram.c | ||
| u-boot.lds | ||
JSE 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. Memory Bank 1 -- SystemACE Controller ------------------------------------- 0xf0000000 - 0xf00fffff The SystemACE chip is along on peripheral bank CS#1. We don't need much space, but 1Meg is the smallest we can configure the chip to allocate. We need it far away from the flash region, because this region is set to be non-cached. Internal Peripherals -------------------- 0xef600300 - 0xef6008ff These are scattered various peripherals internal to the PPC405GPr chip. SDRAM ----- 0x00000000 - 0x07ffffff (128 MBytes)