The status register coding for BUSY/READY(BIT6)
is actually [Busy:0, Ready:1].
BTW, this patch not only apply the bug fix to status bit,
but also update the Busy/Ready status upon nand flash read/write/erase.
Signed-off-by: Kuo-Jung Su <dant...@faraday-tech.com>
---
hw/nand.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/hw/nand.c b/hw/nand.c
index 6054f46..76479ed 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
@@ -646,6 +646,8 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState
*s)
uint8_t iobuf[(PAGE_SECTORS + 2) * 0x200];
if (PAGE(s->addr) >= s->pages)
return;
+
+ s->status &= ~NAND_IOSTATUS_READY;
if (!s->bdrv) {
mem_and(s->storage + PAGE_START(s->addr) + (s->addr & PAGE_MASK) +
@@ -656,6 +658,7 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState
*s)
soff = SECTOR_OFFSET(s->addr);
if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS) < 0) {
printf("%s: read error in sector %" PRIu64 "\n", __func__, sector);
+ s->status |= NAND_IOSTATUS_READY;
return;
}
@@ -675,6 +678,7 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState
*s)
soff = off & 0x1ff;
if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) < 0) {
printf("%s: read error in sector %" PRIu64 "\n", __func__, sector);
+ s->status |= NAND_IOSTATUS_READY;
return;
}
@@ -685,6 +689,8 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState
*s)
}
}
s->offset = 0;
+
+ s->status |= NAND_IOSTATUS_READY;
}
/* Erase a single block */
@@ -696,6 +702,8 @@ static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState
*s)
if (PAGE(addr) >= s->pages)
return;
+
+ s->status &= ~NAND_IOSTATUS_READY;
if (!s->bdrv) {
memset(s->storage + PAGE_START(addr),
@@ -738,6 +746,8 @@ static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState
*s)
printf("%s: write error in sector %" PRIu64 "\n", __func__, page);
}
}
+
+ s->status |= NAND_IOSTATUS_READY;
}
static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s,
@@ -745,6 +755,8 @@ static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState
*s,
{
if (PAGE(addr) >= s->pages)
return;
+
+ s->status &= ~NAND_IOSTATUS_READY;
if (s->bdrv) {
if (s->mem_oob) {
@@ -769,6 +781,8 @@ static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState
*s,
offset, PAGE_SIZE + OOB_SIZE - offset);
s->ioaddr = s->io;
}
+
+ s->status |= NAND_IOSTATUS_READY;
}
static void glue(nand_init_, PAGE_SIZE)(NANDFlashState *s)
--
1.7.9.5
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