Buffer block writes to avoid flushing every word access onto backing
storage device. This significantly speeds up flash emulation for flashes
connected through an 8 or 16-bit bus combined with backing storage (-pflash).
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@petalogix.com>

When wcycle is non zero the area is already opened for readable IO.
Avoiding the re-registration of the memarea significantly speeds up
the flash emulation. In particular for flashes connected through 8 or
16-bit buses.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@petalogix.com>

Flashes connected through an 8 bit bus cannot handle write buffers
larger than 256 bytes.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@petalogix.com>

Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@petalogix.com>

In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem.  Something
like this _must_ be presented on the list first so people can provide input
and cope with it.

This reverts commit 99a0949b.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Some not so obvious bits, slirp and Xen were left alone for the time
being.
Signed-off-by: Nmalc <av1474@comtv.ru>

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

If a flash file of size smaller than the flash size is specified in
the -pflash option, the block driver returns error. But the
pflash_cfi0x ignores the error. This results in a flash content of all
zeroes. And the simulation aborts while executing code.

This patch adds the checks for errors from bdrv_read and escalates it
to the calling code.
Signed-off-by: NVijay Kumar B. <vijaykumar@bravegnu.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The parameter is always zero except when registering the three internal
io regions (ROM, unassigned, notdirty).  Remove the parameter to reduce
the API's power, thus facilitating future change.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NPaul Brook <paul@codesourcery.com>

Signed-off-by: NPaul Brook <paul@cofdesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7067 c046a42c-6fe2-441c-8c8c-71466251a162

Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6529 c046a42c-6fe2-441c-8c8c-71466251a162

The attached patch updates the FSF address in the GPL/LGPL boilerplate
in most GPL/LGPLed files, and also in COPYING.LIB.
Signed-off-by: NStuart Brady <stuart.brady@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6162 c046a42c-6fe2-441c-8c8c-71466251a162

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NAndrzej Zaborowski <andrew.zaborowski@intel.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5904 c046a42c-6fe2-441c-8c8c-71466251a162

Signed-off-by: NPaul Brook <paul@codesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5849 c046a42c-6fe2-441c-8c8c-71466251a162

The current flash emulation code advertises a write buffer size of 16
bytes (1 << 4, according to offset 0x2A of the CFI table). This is
very small compared to normal write buffer sizes, and makes the
process of writing to the flash very slow (at least from U-Boot).

This patch increases this size to 2048 bytes. Except the modification
of the CFI table, the only other required modification is to use
"value" instead of "cmd" to set pfl->counter, because cmd is truncated
to the 8 lower bits of value, while the number of bytes for a write
can now be greater than 255 bytes.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5454 c046a42c-6fe2-441c-8c8c-71466251a162

This patches slightly improves the debugging messages in pflash_read()
and pflash_write().
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5410 c046a42c-6fe2-441c-8c8c-71466251a162

pfl->wcycle was set to 1 when the erase confirm command was set, which
lead to the next command being misinterpreted by Qemu:

pflash_write: Unimplemented flash cmd sequence (offset 00000000,
wcycle 0x1 cmd 0x20 value 0x70)

This patch fixes this issue by resetting pfl->wcycle to 0 on erase
confirm so that the next command is considered as a new one.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5409 c046a42c-6fe2-441c-8c8c-71466251a162

Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5311 c046a42c-6fe2-441c-8c8c-71466251a162

The IO index is now stored in its own field, instead of being wedged
into the vaddr field.  This eliminates the ROMD and watchpoint host
pointer weirdness.  The IO index space is expanded by 1 bit, and
several additional bits are made available in the TLB vaddr field.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4704 c046a42c-6fe2-441c-8c8c-71466251a162

(Jean-Christophe PLAGNIOL-VILLARD)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4060 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3887 c046a42c-6fe2-441c-8c8c-71466251a162

pflash_t is still ambiguous... perhaps both emulations should sit in a single file.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3794 c046a42c-6fe2-441c-8c8c-71466251a162

Catch wrong/unknown NOR flash command sequences, by Thorsten Zitterell.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3684 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3667 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3177 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2962 c046a42c-6fe2-441c-8c8c-71466251a162

- always need to register flash area back to IO_MEM_ROMD at reset time
- disabled buffered write as it's not actually supported
- don't check flash time at registration time


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2678 c046a42c-6fe2-441c-8c8c-71466251a162

and parallel CFI flash driver.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2661 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2097 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2033 c046a42c-6fe2-441c-8c8c-71466251a162

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2022 c046a42c-6fe2-441c-8c8c-71466251a162