Hello. Leonid Yegoshin wrote:
+config 64BIT_PHYS_ADDR + bool "Kernel supports 64 bit physical addresses" if EXPERIMENTAL + depends on 64BIT
This option is selected on 32-bit CPUs like Alchemy, which has 36-bit physical address. It will cause a warning about unmet
Just verified - selected Alchemy and DB1000 board and got
# CONFIG_64BIT is not set CONFIG_64BIT_PHYS_ADDR=y CONFIG_ARCH_PHYS_ADDR_T_64BIT=y CONFIG_PHYS_ADDR_T_64BIT=y
???
And you didn't get a warning on "select 64BIT_PHYS_ADDR"? Strange, modern Kconfig should spit out one...
I also want to say that NetLogic Microsystems web site indicates that some of Alchemy CPU has only 14 bit DDR/SDRAM address, for exam - Au1550 (http://www.netlogicmicro.com/Products/Alchemy/Au1550.asp) but arch/mips/configs/db1550_defconfig (and pb1550) choses 64BIT_PHYS_ADDR too. Seems like something wrong here.
High address bits on Alchemies are used to address PCI/PCMCIA space, not RAM.
- Leonid.
WBR, Sergei
