a92946bc6a
Blackfin arch: use the new bfin_addr_dcachable() function
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Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-16 23:25:34 +08:00
f099f39acf
Blackfin arch: Make L2 SRAM cacheable
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Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 14:11:57 +08:00
5b04f271fe
Blackfin arch: Modify some funtion names to more genernal ones
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Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 17:32:57 +08:00
5d2e321306
Blackfin arch: fixing bug - under IRQ stress, running applications may wrongly trigger an ICPLB miss and be killed
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Disable IRQs while frobbing the CPLB registers, to avoid accessing the
data in current_rwx_mask while it isn't covered by CPLBs.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-07 16:27:01 +08:00
9216bbc838
Blackfin arch: mark some functions as __init as they are only called from __init functions
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Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14 14:35:20 +08:00
00d205a1ce
[Blackfin] arch: lose unnecessary dependency on CONFIG_BFIN_ICACHE for MPU
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Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 03:26:48 +08:00
4bea8b20fd
[Blackfin] arch: add implicit icplb for the bootrom so we can use the utility functions in the kernel
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Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 07:23:36 +08:00
4e354b5499
[Blackfin] arch: cplb-mpu code clean up
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- allow bootrom to be readable from supervisor mode
- delete unused local variable "addr"
- punt unused local defines of cplbinfo.c
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:44:32 +08:00
8cab0288c6
[Blackfin] arch: add boot messages to quickly distinguish between MPU/NOMPU settings
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Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:13:10 +08:00
1ebc723cf0
[Blackfin] arch: support the reserved memory region in the MPU code
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Pointed-out-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 02:58:26 +08:00
d56daae9be
[Blackfin] arch: fix bug - a crash on bootup with CONFIG_MPU on the BF548
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The function flush_switched_dcplbs was clearing the CPLB entries covering
the process permission bitmasks. This means that the sequence
flush_switched_dcplbs ();
set_mask_dcplbs(mm->context.page_rwx_mask);
has a problem: if kernel code (such as an interrupt) causes a CPLB miss before
set_mask_dcplbs completes, the CPLB handler function causes a double fault,
with an instantaneous reboot.
This bug fix is dedicated to Michael Hennerich, the only person in the world
capable of providing working JTAG hardware.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 02:56:36 +08:00
b4bb68f7d0
[Blackfin] arch: fix bug - Make the MPU code aware of the async banks and the uncached DMA area.
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Bug: CONFIG_MPU doesn't seem to handle access to ASYNC/IO Memory well
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3912
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 07:26:23 +08:00
dbfe44f02b
[Blackfin] arch: fix up - CONFIG_BLKFIN_WT was renamed CONFIG_BFIN_WT while the MPU code was out-of-tree.
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Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 07:11:55 +08:00
c605999bd9
[Blackfin] arch: error out if ANOMALY_05000263 applies while enabling the MPU
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Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 12:28:23 +08:00
b97b8a9983
[Blackfin] arch: Initial checkin of the memory protection support.
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Enable it with CONFIG_MPU.
Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-01-27 18:39:16 +08:00
Mike Frysinger