Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH defconfig v8] ARM: vf610m4: add defconfig for Linux on Vybrids Cortex-M4 | Date | Wed, 20 May 2015 23:25:44 +0200 |
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On Wednesday 20 May 2015 00:06:22 Stefan Agner wrote: > Add defconfig for Linux on Vybrid (vf610) on the secondary Cortex- > M4 CPU. The use of a XIP image has been tested which needs to be > loaded (e.g. using the custom m4boot loader) to the end of the > available RAM at address 0x8f000000. The Cortex-M4 has a code-alias > which makes sure that the instructions get fetched through the code > bus (alias starts at 0x00800000 => 0x80800000 in system address). > Hence, to get optimal performance, use 0x0f000000 as XIP_PHYS_ADDR. > This address is additionally shifted by the length of the minimal > loader which is inserted by m4boot. Currently, this offset is 0x80. > > The standard DRAM base address is configured to 0x8C000000, which > gives the Cortex-M4 48MiB of RAM. > > Signed-off-by: Stefan Agner <stefan@agner.ch> >
Applied to next/defconfig, thanks!
Arnd
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