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author | Max Filippov <jcmvbkbc@gmail.com> | 2016-07-23 01:47:58 +0200 |
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committer | Max Filippov <jcmvbkbc@gmail.com> | 2016-07-24 05:33:59 +0200 |
commit | 3de00482b006daa110151ac6775adc52538a3d6a (patch) | |
tree | bd7a17e41872fdd386b5f548af88ee626fcdaba6 /arch/xtensa/mm/init.c | |
parent | xtensa: cleanup MMU setup and kernel layout macros (diff) | |
download | linux-3de00482b006daa110151ac6775adc52538a3d6a.tar.xz linux-3de00482b006daa110151ac6775adc52538a3d6a.zip |
xtensa: minimize use of PLATFORM_DEFAULT_MEM_{ADDR,SIZE}
Now that the kernel load address and KSEG physical base address have
their own Kconfig symbols PLATFORM_DEFAULT_MEM seems redundant. It makes
little sense to use it in MMU configurations instead of KSEG_PADDR.
In noMMU configurations there's no explicit KSEG, so it's still useful
for the early cache initialization and definition of ARCH_PFN_OFFSET,
which affects mem_map size.
- limit it to noMMU; MMU variants have XCHAL_KSEG_PADDR and
XCHAL_KSEG_SIZE;
- don't use it to define TASK_SIZE or MAX_LOW_PFN: first doesn't make
any difference in noMMU, second is meaningless as there's no high
memory;
- don't add default physical memory region: memory layout should come
from the DT, bootloader tags, or memmap= command line parameter.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/mm/init.c')
0 files changed, 0 insertions, 0 deletions