From a0a8029058e11b8eda1a3d61fdf497bc687b30f8 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 24 Sep 2016 18:19:58 -0600 Subject: spl: Add a way to declare an SPL image loader Add a linker list macro which can be used to declare an SPL image loader. Update spl_load_image() to search available loaders for the correct one. Signed-off-by: Simon Glass Reviewed-by: Tom Rini --- include/spl.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'include') diff --git a/include/spl.h b/include/spl.h index 4435089..884fbe6 100644 --- a/include/spl.h +++ b/include/spl.h @@ -149,6 +149,38 @@ struct spl_boot_device { const char *boot_device_name; }; +/** + * Holds information about a way of loading an SPL image + * + * @boot_device: Boot device that this loader supports + * @load_image: Function to call to load image + */ +struct spl_image_loader { + uint boot_device; + /** + * load_image() - Load an SPL image + * + * @bootdev: describes the boot device to load from + */ + int (*load_image)(struct spl_boot_device *bootdev); +}; + +/* Declare an SPL image loader */ +#define SPL_LOAD_IMAGE(__name) \ + ll_entry_declare(struct spl_image_loader, __name, spl_image_loader) + +/* + * __priority is the priority of this method, 0 meaning it will be the top + * choice for this device, 9 meaning it is the bottom choice. + * __boot_device is the BOOT_DEVICE_... value + * __method is the load_image function to call + */ +#define SPL_LOAD_IMAGE_METHOD(__priority, __boot_device, __method) \ + SPL_LOAD_IMAGE(__method ## __priority ## __boot_device) = { \ + .boot_device = __boot_device, \ + .load_image = __method, \ + } + /* NAND SPL functions */ int spl_nand_load_image(struct spl_boot_device *bootdev); -- cgit v1.1