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mass storage nand almost working

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This commit is contained in:
Bas Wijnen
2010-09-09 21:48:35 +02:00
parent 3a38ea2944
commit 87acc47fd9
4 changed files with 211 additions and 106 deletions
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12
mips/arch.ccp
View File

@@ -220,11 +220,13 @@ bool kMemory_arch_map (kMemory *mem, kPage *page, unsigned address):
mem->unmap (table->page[idx])
table->entrylo[idx] = make_entry_lo (page)
table->page[idx] = page
//kdebug ("mapped ")
//kdebug_num (page->frame)
//kdebug (" at address ")
//kdebug_num (address)
//kdebug ('\n')
#if 0
kdebug ("mapped ")
kdebug_num (page->frame)
kdebug (" at address ")
kdebug_num (address)
kdebug ('\n')
#endif
page->mapping = address
page->arch.next_mapped = mem->arch.shadow[address >> 21]
if page->arch.next_mapped:

11
mips/nand.hhp
View File

@@ -80,6 +80,9 @@ static unsigned rdata ():
static void reset ():
// Set up.
gpio_as_nand ()
gpio_as_gpio (2, 1 << 30)
gpio_as_input (2, 1 << 30)
gpio_enable_pull (2, 1 << 30)
EMC_NFCSR = EMC_NFCSR_NFE1 | EMC_NFCSR_NFCE1
// Reset nand.
@@ -149,11 +152,11 @@ static bool read (unsigned a, char *buffer):
addr (col)
addr (col >> 8)
cmd (CMD_RNDOUTSTART)
//debug ("parity data:")
debug ("parity data:")
for unsigned t = 0; t < 9; ++t:
error[t] = rdata ()
//debug (" %x", error[t] & 0xff)
//debug ("\n")
debug (" %x", error[t] & 0xff)
debug ("\n")
cmd (CMD_RNDOUT)
addr (column)
addr (column >> 8)
@@ -165,8 +168,10 @@ static bool read (unsigned a, char *buffer):
for unsigned t = 0; t < 9; ++t:
((volatile char *)&EMC_NFPAR (0))[t] = error[t]
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_PRDY
debug ("before\n")
while !(EMC_NFINTS & EMC_NFINTS_DECF):
DELAY ()
debug ("after\n")
unsigned ints = EMC_NFINTS
if ints & EMC_NFINTS_UNCOR:
debug ("uncorrectable error in nand at %x\n", a)