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emBIOS backports part three: Make the NAND flash driver return more useful error codes if initialization fails.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27782 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sparmann 2010-08-12 08:49:12 +00:00
parent 6b389305f6
commit b4d6d1e643
2 changed files with 22 additions and 24 deletions
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44
firmware/target/arm/s5l8700/ipodnano2g/nand-nano2g.c
View file

@ -45,8 +45,6 @@
#define NAND_STATUS_READY 0x40
#define NAND_DEVICEINFOTABLE_ENTRIES 33
static const struct nand_device_info_type nand_deviceinfotable[] =
{
{0x1580F1EC, 1024, 968, 0x40, 6, 2, 1, 2, 1},
@ -88,7 +86,7 @@ static uint8_t nand_tunk1[4];
static uint8_t nand_twp[4];
static uint8_t nand_tunk2[4];
static uint8_t nand_tunk3[4];
static uint32_t nand_type[4];
static int nand_type[4];
static int nand_powered = 0;
static int nand_interleaved = 0;
static int nand_cached = 0;
@ -307,15 +305,15 @@ static uint32_t nand_get_chip_type(uint32_t bank)
{
mutex_lock(&nand_mtx);
uint32_t result;
if (nand_reset(bank)) return nand_unlock(0xFFFFFFFF);
if (nand_send_cmd(0x90)) return nand_unlock(0xFFFFFFFF);
if (nand_reset(bank)) return nand_unlock(0xFFFFFFFE);
if (nand_send_cmd(0x90)) return nand_unlock(0xFFFFFFFD);
FMANUM = 0;
FMADDR0 = 0;
FMCTRL1 = FMCTRL1_DOTRANSADDR;
if (nand_wait_cmddone()) return nand_unlock(0xFFFFFFFF);
if (nand_wait_cmddone()) return nand_unlock(0xFFFFFFFC);
FMDNUM = 4;
FMCTRL1 = FMCTRL1_DOREADDATA;
if (nand_wait_addrdone()) return nand_unlock(0xFFFFFFFF);
if (nand_wait_addrdone()) return nand_unlock(0xFFFFFFFB);
result = FMFIFO;
FMCTRL1 = FMCTRL1_CLEARRFIFO;
return nand_unlock(result);
@ -351,13 +349,9 @@ void nand_power_up(void)
sleep(HZ / 20);
nand_last_activity_value = current_tick;
for (i = 0; i < 4; i++)
{
if(nand_type[i] != 0xFFFFFFFF)
{
if(nand_reset(i))
if (nand_type[i] >= 0)
if (nand_reset(i))
panicf("nand_power_up: nand_reset(bank=%d) failed.",(unsigned int)i);
}
}
nand_powered = 1;
nand_last_activity_value = current_tick;
mutex_unlock(&nand_mtx);
@ -516,7 +510,7 @@ uint32_t nand_read_page_fast(uint32_t page, void* databuffer,
{
for (i = 0; i < 4; i++)
{
if (nand_type[i] == 0xFFFFFFFF) continue;
if (nand_type[i] < 0) continue;
void* databuf = (void*)0;
void* sparebuf = (void*)0;
if (databuffer) databuf = (void*)((uint32_t)databuffer + 0x800 * i);
@ -534,7 +528,7 @@ uint32_t nand_read_page_fast(uint32_t page, void* databuffer,
led(true);
if (!nand_powered) nand_power_up();
uint8_t status[4];
for (i = 0; i < 4; i++) status[i] = (nand_type[i] == 0xFFFFFFFF);
for (i = 0; i < 4; i++) status[i] = (nand_type[i] < 0);
for (i = 0; i < 4; i++)
{
if (!status[i])
@ -628,7 +622,7 @@ uint32_t nand_read_page_fast(uint32_t page, void* databuffer,
+ 0x40 * (i - 1))) << 1;
}
for (i = 0; i < 4; i++)
if (nand_type[i] != 0xFFFFFFFF)
if (nand_type[i] < 0)
rc |= status[i] << (i << 2);
return nand_unlock(rc);
}
@ -686,7 +680,7 @@ static uint32_t nand_block_erase_fast(uint32_t page)
if (!nand_powered) nand_power_up();
for (i = 0; i < 4; i++)
{
if (nand_type[i] == 0xFFFFFFFF) continue;
if (nand_type[i] < 0) continue;
nand_set_fmctrl0(i, 0);
if (nand_send_cmd(NAND_CMD_BLOCKERASE))
{
@ -705,7 +699,7 @@ static uint32_t nand_block_erase_fast(uint32_t page)
}
for (i = 0; i < 4; i++)
{
if (nand_type[i] == 0xFFFFFFFF) continue;
if (nand_type[i] < 0) continue;
if (rc & (1 << i)) continue;
if (nand_wait_status_ready(i)) rc |= 1 << i;
}
@ -715,7 +709,7 @@ static uint32_t nand_block_erase_fast(uint32_t page)
const struct nand_device_info_type* nand_get_device_type(uint32_t bank)
{
if (nand_type[bank] == 0xFFFFFFFF)
if (nand_type[bank] < 0)
return (struct nand_device_info_type*)0;
return &nand_deviceinfotable[nand_type[bank]];
}
@ -734,7 +728,7 @@ static void nand_thread(void)
}
}
uint32_t nand_device_init(void)
int nand_device_init(void)
{
mutex_init(&nand_mtx);
wakeup_init(&nand_wakeup);
@ -746,7 +740,7 @@ uint32_t nand_device_init(void)
/* Assume there are 0 banks, to prevent
nand_power_up from talking with them yet. */
for(i = 0; i < 4; i++) nand_type[i] = 0xFFFFFFFF;
for (i = 0; i < 4; i++) nand_type[i] = -1;
nand_power_up();
/* Now that the flash is powered on, detect how
@ -758,7 +752,11 @@ uint32_t nand_device_init(void)
nand_tunk2[i] = 7;
nand_tunk3[i] = 7;
type = nand_get_chip_type(i);
if (type == 0xFFFFFFFF) continue;
if (type >= 0xFFFFFFF0)
{
nand_type[i] = (int)type;
continue;
}
for (j = 0; ; j++)
{
if (j == ARRAYLEN(nand_deviceinfotable)) break;
@ -773,7 +771,7 @@ uint32_t nand_device_init(void)
nand_tunk2[i] = nand_deviceinfotable[nand_type[i]].tunk2;
nand_tunk3[i] = nand_deviceinfotable[nand_type[i]].tunk3;
}
if (nand_type[0] == 0xFFFFFFFF) return 1;
if (nand_type[0] < 0) return nand_type[0];
nand_interleaved = ((nand_type[0] >> 22) & 1);
nand_cached = ((nand_type[0] >> 23) & 1);

2
firmware/target/arm/s5l8700/ipodnano2g/nand-target.h
View file

@ -55,7 +55,7 @@ uint32_t nand_write_page_collect(uint32_t bank);
const struct nand_device_info_type* nand_get_device_type(uint32_t bank);
uint32_t nand_reset(uint32_t bank);
uint32_t nand_device_init(void);
int nand_device_init(void);
void nand_set_active(void);
long nand_last_activity(void);
void nand_power_up(void);