Single binary kernel for all i.MX

[Shawn Guo]

Hi Sascha,

I'm studying at the implementation.  Can you please help me understand
how "addruart" in plat-mxc/include/mach/debug-macro.S works for single
image?

        .macro  addruart, rp, rv
        ldr     \rp, =UART_PADDR        @ physical
        ldr     \rv, =UART_VADDR        @ virtual
        .endm

We have this macro to get physical base address of UART.  However
UART_PADDR is defined as MX?_UART1_BASE_ADDR depending on
CONFIG_ARCH_MX*.  When all CONFIG_ARCH_MX* get defined in single image
case, how does UART_PADDR work for all CONFIG_ARCH_MX*?

Thanks.


On Fri, Nov 5, 2010 at 8:18 PM, Sascha Hauer <s.hauer at pengutronix.de> wrote:
> Hi all,
>
> We are talking about a single kernel for longer now, here is something
> to test for the ones interested:
>
> git://git.pengutronix.de/git/imx/linux-2.6.git imx-single-kernel
>
> Compiling the imx_defconfig will result in a kernel which works
> i.MX21, i.MX27, i.MX31, i.MX35 and i.MX51 (not tested on i.MX21).
> i.MX1 does not work mainly because the kernel build will use some ARMv5
> and later instructions.
> The branch is based on the patches recently posted. It contains some
> hacks, so it still needs to be worked on.
>
> Sascha
>
> --
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-- 
Regards,
Shawn