Messages in this thread | | | From | Dave Gerlach <> | Subject | [RFC PATCH 0/2] Add ioremap_exec enhancements | Date | Wed, 26 Nov 2014 15:13:59 -0600 |
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Hi,
Some platforms need the ability to ioremap memory for use with small chunks of code, like in certain PM applications that run from sram.
This series provides a common way to call an arch's ioremap_exec, which currently only exists for ARM, so that we can use it in the generic sram driver in a forthcoming patch.
This patch is part of a patch series split into several smaller sets for introducing suspend on AM335x. I plan to use it to copy several pieces of ASM code from an EMIF driver and the SoC PM code to run from SRAM on the SoC. I have pushed a branch here [1] based on v3.18-rc6 with all required patches so that the higher level plan for these patches can be seen.
Regards, Dave
[1] https://github.com/dgerlach/linux-pm/tree/rfc-pm-am335x-v3.18-rc6
Russ Dill (2): asm-generic: io: Add exec versions of ioremap lib: devres: Add exec versions of devm_ioremap_resource and friends
arch/arm/include/asm/io.h | 2 + include/asm-generic/iomap.h | 5 ++ include/linux/device.h | 19 ++++++- include/linux/io.h | 9 +++- lib/devres.c | 125 ++++++++++++++++++++++++++++++++++++++++++-- 5 files changed, 154 insertions(+), 6 deletions(-)
-- 2.1.0
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