From: Tudor Ambarus tudor.ambarus@microchip.com
- EBI Chip Select Register is now in SFR, - the pins are set to default values, - timings are matching MT29F4G08BABWP's nand flash requirements.
Signed-off-by: Tudor Ambarus tudor.ambarus@microchip.com --- board/atmel/sam9x60ek/sam9x60ek.c | 61 +++++++++++++++++++++++++++++++++++++++ include/configs/sam9x60ek.h | 28 ++++++++++++++++++ 2 files changed, 89 insertions(+)
diff --git a/board/atmel/sam9x60ek/sam9x60ek.c b/board/atmel/sam9x60ek/sam9x60ek.c index 62938741ddd6..e352afc67ed3 100644 --- a/board/atmel/sam9x60ek/sam9x60ek.c +++ b/board/atmel/sam9x60ek/sam9x60ek.c @@ -7,8 +7,10 @@
#include <common.h> #include <asm/io.h> +#include <asm/arch/at91sam9_smc.h> #include <asm/arch/at91_common.h> #include <asm/arch/at91_rstc.h> +#include <asm/arch/at91_sfr.h> #include <asm/arch/clk.h> #include <asm/arch/gpio.h> #include <debug_uart.h> @@ -18,6 +20,62 @@ DECLARE_GLOBAL_DATA_PTR;
void at91_prepare_cpu_var(void);
+#ifdef CONFIG_CMD_NAND +static void sam9x60ek_nand_hw_init(void) +{ + struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC; + struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR; + unsigned int csa; + + at91_pio3_set_a_periph(AT91_PIO_PORTD, 0, 1); /* NAND OE */ + at91_pio3_set_a_periph(AT91_PIO_PORTD, 1, 1); /* NAND WE */ + at91_pio3_set_a_periph(AT91_PIO_PORTD, 2, 0); /* NAND ALE */ + at91_pio3_set_a_periph(AT91_PIO_PORTD, 3, 0); /* NAND CLE */ + /* Enable NandFlash */ + at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1); + /* Configure RDY/BSY */ + at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 6, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 7, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 8, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 9, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 10, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 11, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 12, 1); + at91_pio3_set_a_periph(AT91_PIO_PORTD, 13, 1); + + at91_periph_clk_enable(ATMEL_ID_PIOD); + + /* Enable CS3 */ + csa = readl(&sfr->ebicsa); + csa |= AT91_SFR_CCFG_EBI_CSA(3, 1) | AT91_SFR_CCFG_NFD0_ON_D16; + + /* Configure IO drive */ + csa &= ~AT91_SFR_CCFG_EBI_DRIVE_SAM9X60; + + writel(csa, &sfr->ebicsa); + + /* Configure SMC CS3 for NAND/SmartMedia */ + writel(AT91_SMC_SETUP_NWE(4), &smc->cs[3].setup); + + writel(AT91_SMC_PULSE_NWE(10) | AT91_SMC_PULSE_NCS_WR(20) | + AT91_SMC_PULSE_NRD(10) | AT91_SMC_PULSE_NCS_RD(20), + &smc->cs[3].pulse); + + writel(AT91_SMC_CYCLE_NWE(20) | AT91_SMC_CYCLE_NRD(20), + &smc->cs[3].cycle); + + writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE | +#ifdef CONFIG_SYS_NAND_DBW_16 + AT91_SMC_MODE_DBW_16 | +#else /* CONFIG_SYS_NAND_DBW_8 */ + AT91_SMC_MODE_DBW_8 | +#endif + AT91_SMC_MODE_TDF | AT91_SMC_MODE_TDF_CYCLE(15), + &smc->cs[3].mode); +} +#endif + #ifdef CONFIG_BOARD_LATE_INIT int board_late_init(void) { @@ -48,6 +106,9 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+#ifdef CONFIG_CMD_NAND + sam9x60ek_nand_hw_init(); +#endif return 0; }
diff --git a/include/configs/sam9x60ek.h b/include/configs/sam9x60ek.h index b778bd8e83eb..dbcbce3a2b80 100644 --- a/include/configs/sam9x60ek.h +++ b/include/configs/sam9x60ek.h @@ -42,6 +42,26 @@ #define CONFIG_SYS_INIT_SP_ADDR \ (CONFIG_SYS_SDRAM_BASE + 16 * 1024 - GENERATED_GBL_DATA_SIZE)
+/* NAND flash */ +#ifdef CONFIG_CMD_NAND +#define CONFIG_NAND_ATMEL +#define CONFIG_SYS_MAX_NAND_DEVICE 1 +#define CONFIG_SYS_NAND_BASE 0x40000000 +#define CONFIG_SYS_NAND_MASK_ALE BIT(21) +#define CONFIG_SYS_NAND_MASK_CLE BIT(22) +#define CONFIG_SYS_NAND_ENABLE_PIN AT91_PIN_PD4 +#define CONFIG_SYS_NAND_READY_PIN AT91_PIN_PD5 +#define CONFIG_SYS_NAND_ONFI_DETECTION + +#define CONFIG_MTD_DEVICE +#endif + +/* PMECC & PMERRLOC */ +#define CONFIG_ATMEL_NAND_HWECC +#define CONFIG_ATMEL_NAND_HW_PMECC +#define CONFIG_PMECC_CAP 8 +#define CONFIG_PMECC_SECTOR_SIZE 512 + #define CONFIG_SYS_LOAD_ADDR 0x22000000 /* load address */
#ifdef CONFIG_SD_BOOT @@ -50,6 +70,14 @@ "fatload mmc 0:1 0x21000000 at91-sam9x60ek.dtb;" \ "fatload mmc 0:1 0x22000000 zImage;" \ "bootz 0x22000000 - 0x21000000" + +#elif defined(CONFIG_NAND_BOOT) +/* bootstrap + u-boot + env + linux in nandflash */ +#define CONFIG_ENV_OFFSET_REDUND 0x100000 +#define CONFIG_BOOTCOMMAND "nand read " \ + "0x22000000 0x200000 0x600000; " \ + "nand read 0x21000000 0x180000 0x20000; " \ + "bootz 0x22000000 - 0x21000000" #endif
/*