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[PULL 13/16] hw/block: m25p80: Support fast read for SST flashes
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From: |
Alistair Francis |
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Subject: |
[PULL 13/16] hw/block: m25p80: Support fast read for SST flashes |
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Date: |
Mon, 22 Mar 2021 21:57:53 -0400 |
From: Bin Meng <bin.meng@windriver.com>
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>
---
hw/block/m25p80.c | 3 +++
1 file changed, 3 insertions(+)
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;
--
2.30.1
- [PULL 03/16] target/riscv: propagate PMP permission to TLB page, (continued)
- [PULL 03/16] target/riscv: propagate PMP permission to TLB page, Alistair Francis, 2021/03/22
- [PULL 05/16] target/riscv: flush TLB pages if PMP permission has been changed, Alistair Francis, 2021/03/22
- [PULL 04/16] target/riscv: add log of PMP permission checking, Alistair Francis, 2021/03/22
- [PULL 06/16] target/riscv: Adjust privilege level for HLV(X)/HSV instructions, Alistair Francis, 2021/03/22
- [PULL 08/16] target/riscv: Use background registers also for MSTATUS_MPV, Alistair Francis, 2021/03/22
- [PULL 07/16] target/riscv: Make VSTIP and VSEIP read-only in hip, Alistair Francis, 2021/03/22
- [PULL 09/16] hw/riscv: Add fw_cfg support to virt, Alistair Francis, 2021/03/22
- [PULL 10/16] hw/riscv: allow ramfb on virt, Alistair Francis, 2021/03/22
- [PULL 11/16] target/riscv: Fix read and write accesses to vsip and vsie, Alistair Francis, 2021/03/22
- [PULL 12/16] target/riscv: Add proper two-stage lookup exception detection, Alistair Francis, 2021/03/22
- [PULL 13/16] hw/block: m25p80: Support fast read for SST flashes,
Alistair Francis <=
- [PULL 14/16] hw/riscv: microchip_pfsoc: Map EMMC/SD mux register, Alistair Francis, 2021/03/22
- [PULL 15/16] docs/system: riscv: Add documentation for 'microchip-icicle-kit' machine, Alistair Francis, 2021/03/22
- [PULL 16/16] target/riscv: Prevent lost illegal instruction exceptions, Alistair Francis, 2021/03/22
- Re: [PULL 00/16] riscv-to-apply queue, Peter Maydell, 2021/03/23