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iPod Nano 2G: Reset NAND banks after powering the chip up.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23110 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sparmann 2009-10-11 13:48:12 +00:00
parent e13c600133
commit 3b549fedbb
1 changed files with 41 additions and 39 deletions
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80
firmware/target/arm/s5l8700/ipodnano2g/nand-nano2g.c
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@ -128,45 +128,6 @@ uint32_t nand_timeout(long timeout)
} }
} }
void nand_power_up(void)
{
unsigned char powerup[2] = {0x15, 1};
mutex_lock(&ecc_mtx);
PWRCONEXT &= ~0x40;
PWRCON &= ~0x100000;
PCON2 = 0x33333333;
PDAT2 = 0;
PCON3 = 0x11113333;
PDAT3 = 0;
PCON4 = 0x33333333;
PDAT4 = 0;
PCON5 = (PCON5 & ~0xF) | 3;
PUNK5 = 1;
pmu_write_multiple(0x35, 2, powerup);
sleep(HZ / 50);
nand_powered = 1;
mutex_unlock(&ecc_mtx);
}
void nand_power_down(void)
{
unsigned char powerdown[2] = {0x15, 0};
mutex_lock(&ecc_mtx);
pmu_write_multiple(0x35, 2, powerdown);
PCON2 = 0x11111111;
PDAT2 = 0;
PCON3 = 0x11111111;
PDAT3 = 0;
PCON4 = 0x11111111;
PDAT4 = 0;
PCON5 = (PCON5 & ~0xF) | 1;
PUNK5 = 1;
PWRCONEXT |= 0x40;
PWRCON |= 0x100000;
nand_powered = 0;
mutex_unlock(&ecc_mtx);
}
uint32_t nand_wait_rbbdone(void) uint32_t nand_wait_rbbdone(void)
{ {
long timeout = current_tick + HZ / 50; long timeout = current_tick + HZ / 50;
@ -338,6 +299,47 @@ uint32_t nand_get_chip_type(uint32_t bank)
return nand_unlock(result); return nand_unlock(result);
} }
void nand_power_up(void)
{
unsigned char powerup[2] = {0x15, 1};
uint32_t i;
mutex_lock(&ecc_mtx);
PWRCONEXT &= ~0x40;
PWRCON &= ~0x100000;
PCON2 = 0x33333333;
PDAT2 = 0;
PCON3 = 0x11113333;
PDAT3 = 0;
PCON4 = 0x33333333;
PDAT4 = 0;
PCON5 = (PCON5 & ~0xF) | 3;
PUNK5 = 1;
pmu_write_multiple(0x35, 2, powerup);
sleep(HZ / 50);
for (i = 0; i < 4; i++) nand_reset(i);
nand_powered = 1;
mutex_unlock(&ecc_mtx);
}
void nand_power_down(void)
{
unsigned char powerdown[2] = {0x15, 0};
mutex_lock(&ecc_mtx);
pmu_write_multiple(0x35, 2, powerdown);
PCON2 = 0x11111111;
PDAT2 = 0;
PCON3 = 0x11111111;
PDAT3 = 0;
PCON4 = 0x11111111;
PDAT4 = 0;
PCON5 = (PCON5 & ~0xF) | 1;
PUNK5 = 1;
PWRCONEXT |= 0x40;
PWRCON |= 0x100000;
nand_powered = 0;
mutex_unlock(&ecc_mtx);
}
uint32_t nand_read_page(uint32_t bank, uint32_t page, void* databuffer, uint32_t nand_read_page(uint32_t bank, uint32_t page, void* databuffer,
void* sparebuffer, uint32_t doecc, void* sparebuffer, uint32_t doecc,
uint32_t checkempty) uint32_t checkempty)