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| author | Bin Meng | 2021-03-06 07:01:52 +0100 |
|---|---|---|
| committer | Alistair Francis | 2021-03-23 02:54:40 +0100 |
| commit | aac8e46e9da6e6ad048d858ecb033c953753f31a (patch) | |
| tree | 562f738512bf14ac408e2e73ea21368f2f528fe6 /hw/block/m25p80.c | |
| parent | target/riscv: Add proper two-stage lookup exception detection (diff) | |
| download | qemu-aac8e46e9da6e6ad048d858ecb033c953753f31a.tar.gz qemu-aac8e46e9da6e6ad048d858ecb033c953753f31a.tar.xz qemu-aac8e46e9da6e6ad048d858ecb033c953753f31a.zip | |
hw/block: m25p80: Support fast read for SST flashes
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>
Diffstat (limited to 'hw/block/m25p80.c')
| -rw-r--r-- | hw/block/m25p80.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index 5f9471d83c..183d3f44c2 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -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; |