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| author | Edgar E. Iglesias <edgar.iglesias@petalogix.com> | 2010-01-24 19:28:55 +0100 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@gmail.com> | 2010-01-24 19:28:55 +0100 |
| commit | e9cbbcacb65c6868b58ca5a586ea657cdd2a9e92 (patch) | |
| tree | f61eaf068a38c269fba20d4b8f03d6ec3b7e17c8 | |
| parent | 4737fa266e54564f48bd8f1d72d50a637e093f8a (diff) | |
| download | qemu-e9cbbcacb65c6868b58ca5a586ea657cdd2a9e92.tar.gz | |
pflash: Dont open memarea for full IO if already done.
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: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
| -rw-r--r-- | hw/pflash_cfi01.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/pflash_cfi01.c b/hw/pflash_cfi01.c index b0c7b4ca32..d9e30d9942 100644 --- a/hw/pflash_cfi01.c +++ b/hw/pflash_cfi01.c @@ -247,8 +247,10 @@ static void pflash_write(pflash_t *pfl, target_phys_addr_t offset, DPRINTF("%s: writing offset " TARGET_FMT_plx " value %08x width %d wcycle 0x%x\n", __func__, offset, value, width, pfl->wcycle); - /* Set the device in I/O access mode */ - cpu_register_physical_memory(pfl->base, pfl->total_len, pfl->fl_mem); + if (!pfl->wcycle) { + /* Set the device in I/O access mode */ + cpu_register_physical_memory(pfl->base, pfl->total_len, pfl->fl_mem); + } switch (pfl->wcycle) { case 0: |