commit 71fb2348663e291c99284844b35d5991ded389a1
author balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> Sat Oct 11 09:19:57 2008 +0000
committer balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> Sat Oct 11 09:19:57 2008 +0000
tree 67ea2404a5ea9e3a9b37f02dbce88c90168b944c
parent 998a050186aaab43ae0027f7aceba158ed03766b

Increase write buffer size in pflash emulation (Thomas Petazzoni).

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: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>


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

hw/pflash_cfi01.c

diff --git a/hw/pflash_cfi01.c b/hw/pflash_cfi01.c
index 356237c..57892c2 100644
--- a/hw/pflash_cfi01.c
+++ b/hw/pflash_cfi01.c
@@ -276,8 +276,8 @@
 
             break;
         case 0xe8:
-            DPRINTF("%s: block write of %x bytes\n", __func__, cmd);
-            pfl->counter = cmd;
+            DPRINTF("%s: block write of %x bytes\n", __func__, value);
+            pfl->counter = value;
             pfl->wcycle++;
             break;
         case 0x60:
@@ -583,7 +583,7 @@
     pfl->cfi_table[0x28] = 0x02;
     pfl->cfi_table[0x29] = 0x00;
     /* Max number of bytes in multi-bytes write */
-    pfl->cfi_table[0x2A] = 0x04;
+    pfl->cfi_table[0x2A] = 0x0B;
     pfl->cfi_table[0x2B] = 0x00;
     /* Number of erase block regions (uniform) */
     pfl->cfi_table[0x2C] = 0x01;