diff options
Diffstat (limited to 'board/logicpd/omap3som/omap3logic.c')
| -rw-r--r-- | board/logicpd/omap3som/omap3logic.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/board/logicpd/omap3som/omap3logic.c b/board/logicpd/omap3som/omap3logic.c index a55a520e63..b30fa24a32 100644 --- a/board/logicpd/omap3som/omap3logic.c +++ b/board/logicpd/omap3som/omap3logic.c @@ -114,6 +114,47 @@ void get_board_mem_timings(struct board_sdrc_timings *timings) timings->ctrlb = MICRON_V_ACTIMB_200; timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; } + +#define GPMC_NAND_COMMAND_0 (OMAP34XX_GPMC_BASE + 0x7c) +#define GPMC_NAND_DATA_0 (OMAP34XX_GPMC_BASE + 0x84) +#define GPMC_NAND_ADDRESS_0 (OMAP34XX_GPMC_BASE + 0x80) + +void spl_board_prepare_for_linux(void) +{ + /* The Micron NAND starts locked which + * prohibits mounting the NAND as RW + * The following commands are what unlocks + * the NAND to become RW Falcon Mode does not + * have as many smarts as U-Boot, but Logic PD + * only makes NAND with 512MB so these hard coded + * values should work for all current models + */ + + writeb(0x70, GPMC_NAND_COMMAND_0); + writeb(-1, GPMC_NAND_DATA_0); + writeb(0x7a, GPMC_NAND_COMMAND_0); + writeb(0x00, GPMC_NAND_ADDRESS_0); + writeb(0x00, GPMC_NAND_ADDRESS_0); + writeb(0x00, GPMC_NAND_ADDRESS_0); + writeb(-1, GPMC_NAND_COMMAND_0); + + /* Begin address 0 */ + writeb(NAND_CMD_UNLOCK1, 0x6e00007c); + writeb(0x00, GPMC_NAND_ADDRESS_0); + writeb(0x00, GPMC_NAND_ADDRESS_0); + writeb(0x00, GPMC_NAND_ADDRESS_0); + writeb(-1, GPMC_NAND_DATA_0); + + /* Ending address at the end of Flash */ + writeb(NAND_CMD_UNLOCK2, GPMC_NAND_COMMAND_0); + writeb(0xc0, GPMC_NAND_ADDRESS_0); + writeb(0xff, GPMC_NAND_ADDRESS_0); + writeb(0x03, GPMC_NAND_ADDRESS_0); + writeb(-1, GPMC_NAND_DATA_0); + writeb(0x79, GPMC_NAND_COMMAND_0); + writeb(-1, GPMC_NAND_DATA_0); + writeb(-1, GPMC_NAND_DATA_0); +} #endif #ifdef CONFIG_USB_MUSB_OMAP2PLUS @@ -207,6 +248,16 @@ int board_init(void) } #ifdef CONFIG_BOARD_LATE_INIT + +static void unlock_nand(void) +{ + int dev = nand_curr_device; + struct mtd_info *mtd; + + mtd = get_nand_dev_by_index(dev); + nand_unlock(mtd, 0, mtd->size, 0); +} + int board_late_init(void) { struct board_id *board; @@ -256,6 +307,10 @@ int board_late_init(void) /* restore hsusb0_data5 pin as hsusb0_data5 */ MUX_VAL(CP(HSUSB0_DATA5), (IEN | PTD | DIS | M0)); + +#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK + unlock_nand(); +#endif return 0; } #endif |