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| author | David Brownell <dbrownell@users.sourceforge.net> | 2009-11-10 11:58:31 -0800 |
|---|---|---|
| committer | David Brownell <dbrownell@users.sourceforge.net> | 2009-11-10 11:58:31 -0800 |
| commit | 61af6a681671eae69256dcc5b9e853cf9b161387 (patch) | |
| tree | 2a2d5a5cdcf577fee19093aeaec829e394be6114 /doc | |
| parent | 6881c1b6d686c91a8cd604bdcd6098ab62d4dcb9 (diff) | |
| download | openocd+libswd-61af6a681671eae69256dcc5b9e853cf9b161387.tar.gz openocd+libswd-61af6a681671eae69256dcc5b9e853cf9b161387.tar.bz2 openocd+libswd-61af6a681671eae69256dcc5b9e853cf9b161387.tar.xz openocd+libswd-61af6a681671eae69256dcc5b9e853cf9b161387.zip | |
target: MMU-aware init for memory read/write
Start switching MMU handling over to a more sensible scheme.
Having an mmu() method enables MMU-aware behaviors. Not having
one kicks in simpler ones, with no distinction between virtual
and physical addresses.
Currently only a handful of targets have methods to read/write
physical memory: just arm720, arm920, and arm926. They should
all initialize OK now, but the arm*20 parts don't do the "extra"
stuff arm926 does (which should arguably be target-generic).
Also simplify how target_init() loops over all targets by making
it be a normal "for" loop, instead of scattering its three parts
to the four winds.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/openocd.texi | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi index 8223ee94..475482df 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -5051,9 +5051,11 @@ about what TAP is the current target, or about MMU configuration. Display contents of address @var{addr}, as 32-bit words (@command{mdw}), 16-bit halfwords (@command{mdh}), or 8-bit bytes (@command{mdb}). +When the current target has an MMU which is present and active, +@var{addr} is interpreted as a virtual address. +Otherwise, or if the optional @var{phys} flag is specified, +@var{addr} is interpreted as a physical address. If @var{count} is specified, displays that many units. -@var{phys} is an optional flag to indicate to use -physical address and bypass MMU (If you want to manipulate the data instead of displaying it, see the @code{mem2array} primitives.) @end deffn @@ -5062,10 +5064,12 @@ see the @code{mem2array} primitives.) @deffnx Command mwh [phys] addr halfword @deffnx Command mwb [phys] addr byte Writes the specified @var{word} (32 bits), -@var{halfword} (16 bits), or @var{byte} (8-bit) pattern, +@var{halfword} (16 bits), or @var{byte} (8-bit) value, at the specified address @var{addr}. -@var{phys} is an optional flag to indicate to use -physical address and bypass MMU +When the current target has an MMU which is present and active, +@var{addr} is interpreted as a virtual address. +Otherwise, or if the optional @var{phys} flag is specified, +@var{addr} is interpreted as a physical address. @end deffn |