diff options
| author | Stefan Agner <stefan@agner.ch> | 2015-08-13 02:01:52 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-08-18 16:00:29 +0300 |
| commit | a5f4c561b3b19a9bc43a81da6382b0098ebbc1fb (patch) | |
| tree | 80905f24141bfc42c6506f65168d0188a2060b69 /arch/arm/Kconfig | |
| parent | efaa6e266ba70439da00e7f1c8a218e243ae140a (diff) | |
| download | linux-a5f4c561b3b19a9bc43a81da6382b0098ebbc1fb.tar.xz | |
ARM: 8415/1: early fixmap support for earlycon
Add early fixmap support, initially to support permanent, fixed
mapping support for early console. A temporary, early pte is
created which is migrated to a permanent mapping in paging_init.
This is also needed since the attributes may change as the memory
types are initialized. The 3MiB range of fixmap spans two pte
tables, but currently only one pte is created for early fixmap
support.
Re-add FIX_KMAP_BEGIN to the index calculation in highmem.c since
the index for kmap does not start at zero anymore. This reverts
4221e2e6b316 ("ARM: 8031/1: fixmap: remove FIX_KMAP_BEGIN and
FIX_KMAP_END") to some extent.
Cc: Mark Salter <msalter@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a750c1425c3a..1bcda7cb2e04 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -188,6 +188,9 @@ config ARCH_HAS_ILOG2_U64 config ARCH_HAS_BANDGAP bool +config FIX_EARLYCON_MEM + def_bool y if MMU + config GENERIC_HWEIGHT bool default y |