[PATCH 0/2] Remoteproc: Add predefined coprocessor memory mapping support
From: Loic Pallardy
Date: Fri Aug 26 2016 - 17:48:47 EST
Due to diverse constraints like SoC design, coprocessor characteristics,
security context, etc, coprocessor memory mapping may be predefined/fixed at system
In that case remoteproc should respect the different memory regions allocated
to coprocessor in order to ensure proper operations.
The following patches implement support of fixed memory region predefined in
firmware resource table.
During resource table handling, if resource physical address is defined, i.e
different from 0x0 or 0xFFFFFFFF (-1), remoteproc enables memory region access
using memremap function.
If resource physical address is not defined, current behavior is preserved.
Loic Pallardy (2):
remoteproc: Modify FW_RSC_ADDR_ANY definition
remoteproc: core: Add fixed memory region support
drivers/remoteproc/remoteproc_core.c | 61 ++++++++++++++++++++++++++----------
include/linux/remoteproc.h | 6 +++-
2 files changed, 50 insertions(+), 17 deletions(-)