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hw/block/pflash_cfi02: Use chip erase time specified in the CFI table 

When erasing the chip, use the typical time specified in the CFI table
rather than arbitrarily selecting 5 seconds.

Since the currently unconfigurable value set in the table is 12, this
means a chip erase takes 4096 ms so this isn't a big change in behavior.

Signed-off-by: Stephen Checkoway <stephen.checkoway@oberlin.edu>
Message-Id: <20190426162624.55977-11-stephen.checkoway@oberlin.edu>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Stephen Checkoway 2019-04-26 12:26:24 -04:00 committed by Philippe Mathieu-Daudé
parent ddb6f22548
commit 80f2c625cb
1 changed files with 2 additions and 2 deletions
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4
hw/block/pflash_cfi02.c
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@ -617,9 +617,9 @@ static void pflash_write(void *opaque, hwaddr offset, uint64_t value,
pflash_update(pfl, 0, pfl->chip_len);
}
set_dq7(pfl, 0x00);
/* Let's wait 5 seconds before chip erase is done */
/* Wait the time specified at CFI address 0x22. */
timer_mod(&pfl->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
(NANOSECONDS_PER_SECOND * 5));
(1ULL << pfl->cfi_table[0x22]) * SCALE_MS);
break;
case 0x30:
/* Sector erase */