diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-03-19 02:45:52 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-03-19 02:45:52 +0100 |
| commit | a90dc34f976cd37da23af526120f2ac480cb131f (patch) | |
| tree | 8aedf0690368359a1c480f14ac7e56841f331b89 | |
| parent | a8a52cafb5621b475737ffdc81f63703d5b37904 (diff) | |
Make kernel mapping start address configurable
and move it to 16MiB by default to free 24bit DMA area
* i386/configfrag.ac (--with-_START_MAP): Add option, default to 0x1000000.
* i386/Makefrag.am (_START_MAP): Set to $(_START_MAP).
(_START): Set to _START_MAP+0xC0000000.
| -rw-r--r-- | i386/Makefrag.am | 4 | ||||
| -rw-r--r-- | i386/configfrag.ac | 5 |
2 files changed, 7 insertions, 2 deletions
diff --git a/i386/Makefrag.am b/i386/Makefrag.am index 8b0ef7f0..c61a3f6f 100644 --- a/i386/Makefrag.am +++ b/i386/Makefrag.am @@ -225,8 +225,8 @@ EXTRA_DIST += \ i386/ldscript if PLATFORM_at gnumach_LINKFLAGS += \ - --defsym _START=0xC0100000 \ - --defsym _START_MAP=0x100000 \ + --defsym _START_MAP=$(_START_MAP) \ + --defsym _START=_START_MAP+0xC0000000 \ -T '$(srcdir)'/i386/ldscript endif diff --git a/i386/configfrag.ac b/i386/configfrag.ac index 48744b12..3c29bdf9 100644 --- a/i386/configfrag.ac +++ b/i386/configfrag.ac @@ -119,6 +119,11 @@ if [ x"$enable_pae" = xyes ]; then] [else] AM_CONDITIONAL([enable_pae], [false]) [fi] + +AC_ARG_WITH([_START_MAP], + AS_HELP_STRING([--with-_START_MAP=0x1000000], [specify kernel mapping start address]), + [_START_MAP="$withval"], [_START_MAP=0x1000000]) +AC_SUBST(_START_MAP) dnl Local Variables: dnl mode: autoconf |