mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
de8297765d
The support for the MPU is currently implemented only for R-class (PMSAv7/R). Since the merge of V7M support in to the kernel it is possible to select MPU support on V7M. This patch ensures that until MPU support for M-class processors is implemented, the MPU can only be selected with R-class CPUs Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
65 lines
1.9 KiB
Plaintext
65 lines
1.9 KiB
Plaintext
#
|
|
# Kconfig for uClinux(non-paged MM) depend configurations
|
|
# Hyok S. Choi <hyok.choi@samsung.com>
|
|
#
|
|
|
|
config SET_MEM_PARAM
|
|
bool "Set flash/sdram size and base addr"
|
|
help
|
|
Say Y to manually set the base addresses and sizes.
|
|
otherwise, the default values are assigned.
|
|
|
|
config DRAM_BASE
|
|
hex '(S)DRAM Base Address' if SET_MEM_PARAM
|
|
default 0x00800000
|
|
|
|
config DRAM_SIZE
|
|
hex '(S)DRAM SIZE' if SET_MEM_PARAM
|
|
default 0x00800000
|
|
|
|
config FLASH_MEM_BASE
|
|
hex 'FLASH Base Address' if SET_MEM_PARAM
|
|
default 0x00400000
|
|
|
|
config FLASH_SIZE
|
|
hex 'FLASH Size' if SET_MEM_PARAM
|
|
default 0x00400000
|
|
|
|
config PROCESSOR_ID
|
|
hex 'Hard wire the processor ID'
|
|
default 0x00007700
|
|
depends on !(CPU_CP15 || CPU_V7M)
|
|
help
|
|
If processor has no CP15 register, this processor ID is
|
|
used instead of the auto-probing which utilizes the register.
|
|
|
|
config REMAP_VECTORS_TO_RAM
|
|
bool 'Install vectors to the beginning of RAM' if DRAM_BASE
|
|
depends on DRAM_BASE
|
|
help
|
|
The kernel needs to change the hardware exception vectors.
|
|
In nommu mode, the hardware exception vectors are normally
|
|
placed at address 0x00000000. However, this region may be
|
|
occupied by read-only memory depending on H/W design.
|
|
|
|
If the region contains read-write memory, say 'n' here.
|
|
|
|
If your CPU provides a remap facility which allows the exception
|
|
vectors to be mapped to writable memory, say 'n' here.
|
|
|
|
Otherwise, say 'y' here. In this case, the kernel will require
|
|
external support to redirect the hardware exception vectors to
|
|
the writable versions located at DRAM_BASE.
|
|
|
|
config ARM_MPU
|
|
bool 'Use the ARM v7 PMSA Compliant MPU'
|
|
depends on CPU_V7
|
|
default y
|
|
help
|
|
Some ARM systems without an MMU have instead a Memory Protection
|
|
Unit (MPU) that defines the type and permissions for regions of
|
|
memory.
|
|
|
|
If your CPU has an MPU then you should choose 'y' here unless you
|
|
know that you do not want to use the MPU.
|