Hello, On Friday, November 20, 2009 3:43 PM jassi brar wrote: > On Fri, Nov 20, 2009 at 10:42 PM, Marek Szyprowski > <m.szyprowski@xxxxxxxxxxx> wrote: > > From: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > > > > We decided to use 0x3000'0000 as base memory address on S5PC1XX SoCs > > (s5pc100 and s5pc110). > you might as well want to explain the reason behind it, if any? We decided to change the base memory address to 0x30000000 to be able to support systems with 512MB in the second bank (DRAM1) without using HIMEM. In first bank (DRAM0), which is integrated with SOC (POP) we would always have no more than 256MB of memory. If we would leave the first bank at 0x2000'0000, we would lose 256MB of kernel virtual address space for useless memory hole. With this patch (and proper u-boot) we can run kernel on systems with max 256MB + 512MB of memory in 1GB kernel/3GB userspace address space configuration. Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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