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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 19/28] ARM: at91: add helpers for chain-loading barebox from SD-card
Date: Sun, 5 Jul 2020 20:42:02 +0200	[thread overview]
Message-ID: <20200705184202.GZ15485@pengutronix.de> (raw)
In-Reply-To: <20200701091122.3437-20-a.fatoum@pengutronix.de>

On Wed, Jul 01, 2020 at 11:11:13AM +0200, Ahmad Fatoum wrote:
> +static void at91_fat_start_image(struct pbl_bio *bio,
> +				 void *buf, unsigned int len,
> +				 u32 r4)
> +{
> +	void __noreturn (*bb)(void);
> +	int ret;
> +
> +	ret = pbl_fat_load(bio, "barebox.bin", buf, len);
> +	if (ret < 0) {
> +		pr_err("pbl_fat_load: error %d\n", ret);
> +		return;
> +	}
> +
> +	bb = buf;
> +
> +	sync_caches_for_execution();
> +
> +	xload_bb(bb, r4);
> +}
> +
> +static const struct sdhci_instance {
> +	void __iomem *base;
> +	unsigned id;
> +	u8 periph;
> +	s8 pins[15];
> +} sdhci_instances[] = {
> +	[0] = { SAMA5D2_BASE_SDHC0, SAMA5D2_ID_SDMMC0, AT91_MUX_PERIPH_A,
> +		{ 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 13, 10, 11, 12, -1 } },
> +	[1] = { SAMA5D2_BASE_SDHC1, SAMA5D2_ID_SDMMC1, AT91_MUX_PERIPH_E,
> +		{ 18, 19, 20, 21, 22, 28, 30, -1 } },
> +};

Can we use C99 initializer here please?

> +
> +/**
> + * sama5d2_sdhci_start_image - Load and start an image from FAT-formatted SDHCI
> + * @r4: value of r4 passed by BootROM
> + *
> + * Return: If successul, this function does not return. A negative error

s/successul/successful/

> + * code is returned when this function fails.

This is not true, the function panics on error.

> + */
> +void __noreturn sama5d2_sdhci_start_image(u32 r4)
> +{
> +	void *buf = (void *)SAMA5_DDRCS;
> +	const struct sdhci_instance *instance;
> +	struct pbl_bio bio;
> +	const s8 *pin;
> +	int ret;
> +
> +	instance = &sdhci_instances[!!sama5_bootsource_instance(r4)];

Why "!!"? sama5_bootsource_instance() should return exactly 0 or 1 here.

Sascha

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  reply	other threads:[~2020-07-05 18:42 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-01  9:10 [PATCH RESEND 00/28] ARM: at91: add sama5d2 first stage support Ahmad Fatoum
2020-07-01  9:10 ` [PATCH 01/28] ARM: at91: remove <mach/hardware.h> include from assembly code Ahmad Fatoum
2020-07-01  9:10 ` [PATCH 02/28] ARM: at91: sama5d2: cast peripheral base addresses to __iomem pointers Ahmad Fatoum
2020-07-01  9:10 ` [PATCH 03/28] ARM: at91: import at91bootstrap's at91_ddrsdrc.h Ahmad Fatoum
2020-07-01  9:10 ` [PATCH 04/28] ARM: at91: migrate at91sam9_ddrsdr.h to use " Ahmad Fatoum
2020-07-01  9:10 ` [PATCH 05/28] ARM: at91: replace at91sam9_ddrsdr.h with " Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 06/28] ARM: at91: import early_udelay from at91bootstrap Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 07/28] ARM: at91: import low level DDRAMC initialization code " Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 08/28] ARM: at91: watchdog: implement at91_wdt_disable Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 09/28] watchdog: add support for at91sam9/sama5 watchdog Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 10/28] ARM: at91: implement sama5d2 lowlevel init Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 11/28] ARM: at91: sama5d2: add sama5d2 matrix configuration Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 12/28] ARM: at91: add sama5d2 cache init Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 13/28] ARM: at91: add necessary Advanced Interrupt Controller configuration Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 14/28] ARM: at91: extend low level PMC driver for generic clk support Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 15/28] pbl: add block I/O API Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 16/28] fs: fat: extend for in-PBL support Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 17/28] mci: sdhci: atmel: extend driver for PBL usage Ahmad Fatoum
2020-07-05 18:52   ` Sascha Hauer
2020-07-05 22:32     ` Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 18/28] ARM: at91: add code for sama5 boot source detection Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 19/28] ARM: at91: add helpers for chain-loading barebox from SD-card Ahmad Fatoum
2020-07-05 18:42   ` Sascha Hauer [this message]
2020-07-05 22:35     ` Ahmad Fatoum
2020-07-06  6:26       ` [PATCH] fixup! " Ahmad Fatoum
2020-07-09 14:19       ` [PATCH 19/28] " Sascha Hauer
2020-07-09 15:01         ` [PATCH v2] fixup! " Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 20/28] ARM: at91: sama5d2: reuse stack set-up by first stage Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 21/28] ARM: at91: debug_ll: remove duplicated IS_ENABLED(CONFIG_DEBUG_LL) condition Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 22/28] ARM: at91: sama5d2: reduce UART setup boilerplate with new helpers Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 23/28] ARM: at91: sama5d27-som1: add additional first stage entry point Ahmad Fatoum
2020-07-05 18:46   ` Sascha Hauer
2020-07-06  6:22   ` [PATCH] fixup! " Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 24/28] ARM: at91: sama5d2: read back memory size from DDRAM controller Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 25/28] ARM: at91: sama5d2: populate $bootsource and $bootsource_instance Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 26/28] ARM: at91: sama5d27-som1-ek: add barebox_update and multi environment support Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 27/28] ARM: at91: sama5d27-giantboard: add additional first stage entry point Ahmad Fatoum
2020-07-06  6:22   ` [PATCH] fixup! " Ahmad Fatoum
2020-07-01  9:11 ` [PATCH 28/28] ARM: at91: sama5d27-giantboard: add default environment/bbu Ahmad Fatoum
2020-07-11  5:13 ` [PATCH RESEND 00/28] ARM: at91: add sama5d2 first stage support Sascha Hauer
  -- strict thread matches above, loose matches on Subject: below --
2020-07-01  5:23 [PATCH " Ahmad Fatoum
2020-07-01  5:23 ` [PATCH 19/28] ARM: at91: add helpers for chain-loading barebox from SD-card Ahmad Fatoum

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