[U-Boot] [PATCH V3] Ethernut 5 board support

[Igor Grinberg <grinberg@compulab.co.il>]

On 10/24/2011 12:33 PM, Tim Schendekehl wrote:
> Add support for the Ethernut 5 open hardware design, based
> on Atmel's AT91SAM9XE512 SoC.
>
> V3
>  - Fix issues with latest git.
>
> Signed-off-by: Tim Schendekehl <tim.schendekehl@egnite.de>
> ---

[...]

>  diff --git a/board/egnite/ethernut5/Makefile b/board/egnite/ethernut5/Makefile
> new file mode 100644
> index 0000000..d8e485f
> --- /dev/null
> +++ b/board/egnite/ethernut5/Makefile

[...]

> +
> +clean:
> +	rm -f $(SOBJS) $(OBJS)
> +
> +distclean:	clean
> +	rm -f $(LIB) core *.bak $(obj).depend

You shouldn't be adding this.
Please, see the commit 464c79207c89f247f97b344495924eabb0c9738e
(punt unused clean/distclean targets) by Mike.


[...]

> diff --git a/board/egnite/ethernut5/ethernut5.c b/board/egnite/ethernut5/ethernut5.c
> new file mode 100644
> index 0000000..50c4cb3
> --- /dev/null
> +++ b/board/egnite/ethernut5/ethernut5.c

[...]

> +#ifdef CONFIG_CMD_NAND
> +static void ethernut5_nand_hw_init(void)
> +{
> +	struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
> +	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
> +	unsigned long csa;
> +
> +	/* Assign CS3 to NAND/SmartMedia Interface */
> +	csa = readl(&matrix->ebicsa);
> +	csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
> +	writel(csa, &matrix->ebicsa);
> +
> +	/* Configure SMC CS3 for NAND/SmartMedia */
> +	writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
> +		AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
> +		&smc->cs[3].setup);
> +	writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
> +		AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
> +		&smc->cs[3].pulse);
> +	writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
> +		&smc->cs[3].cycle);
> +	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
> +		AT91_SMC_MODE_EXNW_DISABLE |
> +		AT91_SMC_MODE_DBW_8 |
> +		AT91_SMC_MODE_TDF_CYCLE(2),
> +		&smc->cs[3].mode);
> +
> +#ifdef CONFIG_SYS_NAND_READY_PIN
> +	/* Ready pin is optional. */
> +	at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
> +#endif
> +	at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
> +
> +

Please, remove these 2 empty lines.

> +}
> +#endif
> +
> +/*
> + * This is called first during late initialization.
> + */
> +int board_init(void)
> +{
> +	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
> +
> +	/* Enable clocks for all PIOs */
> +	writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
> +		(1 << ATMEL_ID_PIOC),
> +		&pmc->pcer);
> +
> +	/* Enable ctrl+c. */
> +	console_init_f();

This one has already been called in the init_sequence array.
Why do you need to call it the second time?

> +	/* Set our official architecture number. */
> +	gd->bd->bi_arch_number = 1971; /*MACH_TYPE_ETHERNUT5*/

This should be done in the board config file.
Please, read the README file (CONFIG_MACH_TYPE option).

> +	/* Set adress of boot parameters. */
> +	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
> +	/* Initialize UARTs and power management. */
> +	at91_seriald_hw_init();
> +	ethernut5_power_init();
> +
> +	ethernut5_nand_hw_init();
> +
> +#ifdef CONFIG_HAS_DATAFLASH
> +	at91_spi0_hw_init(1 << 0);
> +#endif
> +	return 0;
> +}

[...]

> +#ifdef CONFIG_GENERIC_ATMEL_MCI
> +int board_mmc_init(bd_t *bd)
> +{
> +	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
> +
> +	/* Enable MCI clock. */
> +	writel(1 << ATMEL_ID_MCI,
> +		&pmc->pcer);

Why not leave this on the same line?

> +
> +	/* Initialize MCI hardware. */
> +	at91_mci_hw_init();
> +	/* Register the device. */
> +	return atmel_mci_init((void *)ATMEL_BASE_MCI);
> +}

[...]


Regards,
Igor.