From mboxrd@z Thu Jan 1 00:00:00 1970 From: eric.y.miao@gmail.com (Eric Miao) Date: Sun, 6 Jun 2010 16:17:00 +0800 Subject: pxa300 - DDRAM base value In-Reply-To: <201006051919.17738.marek.vasut@gmail.com> References: <1275371058.7001.35.camel@balakrishnan-desktop> <201006051919.17738.marek.vasut@gmail.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sun, Jun 6, 2010 at 1:19 AM, Marek Vasut wrote: > Dne ?t 1. ?ervna 2010 07:44:18 balakrishnan napsal(a): >> I am working on pxa300 based development board and using Linux 2.6.34. >> This Linux kernel already has support for following boards >> 1. zylonite_pxa300 >> 2. cm-x300 >> 3. colibri-pxa300 >> 4. littleton >> >> My doubt is that pxa300 based boards are using "0xa0000000" ?as DDRAM >> base and PHYS_OFFSET is also defined in >> "arch/arm/mach-pxa/include/mach/memory.h" as 0xa0000000. >> But in our board ?DDR is mapped in 0x80000000. Does it make any >> problem?. Because after mmu is turned ON, my board is hanging. >> >> "zreladdr-y ? := 0x80008000" is defined in >> "arch/arm/mach-pxa/Makefile.boot" file . >> my machine_desc is as follows >> .phys_io ? ? ? ?= 0x40000000, >> .io_pg_offst ? ?= (io_p2v(0x40000000) >> 18) & 0xfffc, >> .boot_params ? ?= 0x80000100, >> > > Try editing both arch/arm/mach-pxa/Makefile.boot and > arch/arm/mach/pxa/include/mach/memory.h > >> With Thanks >> J.Balakrishnan > > The 0x80000000 should be aliased to 0xa0000000, but looking into the PXA docs, > it is only on pxa320. Eric, any ideas on this ? > Should be working on pxa300/310 as well. If it doesn't, check you bootloader to make sure the mapping is OK, and memory doesn't exceed (0xa000_0000 - 0x8000_0000).