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hw/block/pflash_cfi02: Fix reset command not ignored during erase 

When the flash device is performing a chip erase, all commands are
ignored. When it is performing a sector erase, only the erase suspend
command is valid, which is currently not supported.

In particular, the reset command should not cause the device to reset to
read array mode while programming is on going.

Signed-off-by: Stephen Checkoway <stephen.checkoway@oberlin.edu>
Message-Id: <20190426162624.55977-8-stephen.checkoway@oberlin.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Stephen Checkoway 2019-04-26 12:26:21 -04:00 committed by Philippe Mathieu-Daudé
parent 46fb7809b5
commit a979104239
1 changed files with 2 additions and 1 deletions
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3
hw/block/pflash_cfi02.c
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@ -311,7 +311,8 @@ static void pflash_write(void *opaque, hwaddr offset, uint64_t value,
trace_pflash_io_write(offset, width, width << 1, value, pfl->wcycle);
cmd = value;
if (pfl->cmd != 0xA0) {
if (cmd == 0xF0) {
/* Reset does nothing during chip erase and sector erase. */
if (cmd == 0xF0 && pfl->cmd != 0x10 && pfl->cmd != 0x30) {
if (pfl->wcycle == WCYCLE_AUTOSELECT_CFI) {
/* Return to autoselect mode. */
pfl->wcycle = 3;