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hw/block: m25p80: Support fast read for SST flashes

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Per SST25VF016B datasheet [1], SST flash requires a dummy byte after
the address bytes. Note only SPI mode is supported by SST flashes.

[1] http://ww1.microchip.com/downloads/en/devicedoc/s71271_04.pdf

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210306060152.7250-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Bin Meng 2021-03-06 14:01:52 +08:00 committed by Alistair Francis
parent ec352d0cab
commit aac8e46e9d
1 changed files with 3 additions and 0 deletions
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hw/block/m25p80.c
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@ -895,6 +895,9 @@ static void decode_fast_read_cmd(Flash *s)
s->needed_bytes = get_addr_length(s);
switch (get_man(s)) {
/* Dummy cycles - modeled with bytes writes instead of bits */
case MAN_SST:
s->needed_bytes += 1;
break;
case MAN_WINBOND:
s->needed_bytes += 8;
break;