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am335x, dxr2: get ECC sType from I2C eeprom

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read the ECC Type field from the i2c eeprom, instead
configuring it static in the U-Boot binary.

see RM:
Table 26-17. NAND Geometry Information on I2C EEPROM

Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Heiko Schocher 2016-06-07 08:55:43 +02:00 • committed by Tom Rini
parent 3a504d9639
commit 02b11f1199
1 changed files with 44 additions and 1 deletions
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45
board/siemens/draco/board.c
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@ -105,6 +105,40 @@ static void print_chip_data(void)
} }
#endif /* CONFIG_SPL_BUILD */ #endif /* CONFIG_SPL_BUILD */
#define AM335X_NAND_ECC_MASK 0x0f
#define AM335X_NAND_ECC_TYPE_16 0x02
static int ecc_type;
struct am335x_nand_geometry {
u32 magic;
u8 nand_geo_addr;
u8 nand_geo_page;
u8 nand_bus;
};
static int draco_read_nand_geometry(void)
{
struct am335x_nand_geometry geo;
/* Read NAND geometry */
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x80, 2,
(uchar *)&geo, sizeof(struct am335x_nand_geometry))) {
printf("Could not read the NAND geomtery; something fundamentally wrong on the I2C bus.\n");
return -EIO;
}
if (geo.magic != 0xa657b310) {
printf("%s: bad magic: %x\n", __func__, geo.magic);
return -EFAULT;
}
if ((geo.nand_bus & AM335X_NAND_ECC_MASK) == AM335X_NAND_ECC_TYPE_16)
ecc_type = 16;
else
ecc_type = 8;
return 0;
}
/* /*
* Read header information from EEPROM into global structure. * Read header information from EEPROM into global structure.
*/ */
@ -147,6 +181,8 @@ static int read_eeprom(void)
printf("Warning: No chip data in eeprom\n"); printf("Warning: No chip data in eeprom\n");
print_ddr3_timings(); print_ddr3_timings();
return draco_read_nand_geometry();
#endif #endif
return 0; return 0;
} }
@ -207,7 +243,14 @@ static void spl_siemens_board_init(void)
#ifdef CONFIG_BOARD_LATE_INIT #ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void) int board_late_init(void)
{ {
omap_nand_switch_ecc(1, 8); int ret;
ret = draco_read_nand_geometry();
if (ret != 0)
return ret;
nand_curr_device = 0;
omap_nand_switch_ecc(1, ecc_type);
#ifdef CONFIG_FACTORYSET #ifdef CONFIG_FACTORYSET
/* Set ASN in environment*/ /* Set ASN in environment*/
if (factory_dat.asn[0] != 0) { if (factory_dat.asn[0] != 0) {