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[Qemu-devel] [PATCH v6 11/24] hw/nand.c: correct the sense of the BUSY/R
From: |
Kuo-Jung Su |
Subject: |
[Qemu-devel] [PATCH v6 11/24] hw/nand.c: correct the sense of the BUSY/READY status bit |
Date: |
Wed, 6 Mar 2013 15:27:24 +0800 |
The BIT6 of Status Register(SR):
SR[6] behaves the same as R/B# pin
SR[6] = 0 indicates the device is busy;
SR[6] = 1 means the device is ready
Some NAND flash controller (i.e. ftnandc021) relies on the SR[6]
to determine if the NAND flash erase/program is success or error timeout.
P.S:
The exmaple NAND flash datasheet could be found at following link:
http://www.mxic.com.tw/QuickPlace/hq/PageLibrary4825740B00298A3B.nsf/h_Index/8FEA549237D2F7674825795800104C26/$File/MX30LF1G08AA,%203V,%201Gb,%20v1.1.pdf
Signed-off-by: Kuo-Jung Su <address@hidden>
---
hw/nand.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/nand.c b/hw/nand.c
index 4a71265..61e918f 100644
--- a/hw/nand.c
+++ b/hw/nand.c
@@ -46,7 +46,7 @@
# define NAND_IOSTATUS_PLANE1 (1 << 2)
# define NAND_IOSTATUS_PLANE2 (1 << 3)
# define NAND_IOSTATUS_PLANE3 (1 << 4)
-# define NAND_IOSTATUS_BUSY (1 << 6)
+# define NAND_IOSTATUS_READY (1 << 6)
# define NAND_IOSTATUS_UNPROTCT (1 << 7)
# define MAX_PAGE 0x800
@@ -231,6 +231,7 @@ static void nand_reset(DeviceState *dev)
s->iolen = 0;
s->offset = 0;
s->status &= NAND_IOSTATUS_UNPROTCT;
+ s->status |= NAND_IOSTATUS_READY;
}
static inline void nand_pushio_byte(NANDFlashState *s, uint8_t value)
--
1.7.9.5
- [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, (continued)
- [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Kuo-Jung Su, 2013/03/06
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Paolo Bonzini, 2013/03/06
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Kuo-Jung Su, 2013/03/07
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Paolo Bonzini, 2013/03/07
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Wei-Ren Chen, 2013/03/07
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Paolo Bonzini, 2013/03/07
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Wei-Ren Chen, 2013/03/07
- Re: [Qemu-devel] [PATCH v6 08/24] hw/arm: add Faraday FTRTC011 RTC timer support, Kuo-Jung Su, 2013/03/07
[Qemu-devel] [PATCH v6 09/24] hw/arm: add Faraday FTDMAC020 AHB DMA support, Kuo-Jung Su, 2013/03/06
[Qemu-devel] [PATCH v6 10/24] hw/arm: add Faraday FTAPBBRG020 APB DMA support, Kuo-Jung Su, 2013/03/06
[Qemu-devel] [PATCH v6 11/24] hw/nand.c: correct the sense of the BUSY/READY status bit,
Kuo-Jung Su <=
[Qemu-devel] [PATCH v6 12/24] hw/nand.c: bug fix to erase operation, Kuo-Jung Su, 2013/03/06
[Qemu-devel] [PATCH v6 13/24] hw/arm: add Faraday FTNANDC021 nand flash controller support, Kuo-Jung Su, 2013/03/06