[U-Boot] [Patch v8 4/5] armv8/fsl-lsch3: Add support to load and start MC Firmware

[Jeroen Hofstee]

Hi York,

On 20-06-14 20:46, York Sun wrote:
> From: "J. German Rivera" <German.Rivera at freescale.com>
>
> Adding support to load and start the Layerscape Management Complex (MC)
> firmware. First, the MC GCR register is set to 0 to reset all cores. MC
> firmware and DPL images are copied from their location in NOR flash to
> DDR. MC registers are updated with the location of these images.
> Deasserting the reset bit of MC GCR register releases core 0 to run.
> Core 1 will be released by MC firmware. Stop bits are not touched for
> this step. U-boot waits for MC until it boots up. In case of a failure,
> device tree is updated accordingly. The MC firmware image uses FIT format.
>
>
> +int parse_mc_firmware_fit_image(const void **raw_image_addr,
> +				size_t *raw_image_size)
> +{
> +	int format;
> +	void *fit_hdr;
> +	int node_offset;
> +	const void *data;
> +	size_t size;
> +	const char *uname = "firmware";
> +
> +	/* Check if the image is in NOR flash*/
> +#ifdef CONFIG_SYS_LS_MC_FW_IN_NOR
> +	fit_hdr = (void *)CONFIG_SYS_LS_MC_FW_ADDR;
> +#else
> +#error "No CONFIG_SYS_LS_MC_FW_IN_xxx defined"
> +#endif
> +
> +	/* Check if Image is in FIT format */
> +	format = genimg_get_format(fit_hdr);
> +
> +	if (format != IMAGE_FORMAT_FIT) {
> +		debug("Not a FIT image\n");
> +		return 1;
> +	}
> +
> +	if (!fit_check_format(fit_hdr)) {
> +		debug("Bad FIT image format\n");
> +		return 1;
> +	}
> +
> +	/* Find node offset of MC Firmware image */
> +	if (uname == NULL) {
> +		debug("FIT subimage unit name not provided");
> +		return 1;
> +	}
> +

I don't see how uname can ever be NULL here, since it is
assigned above.

Regards,
Jeroen