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rockchip: Add support for the SPI image

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The Rockchip boot ROM requires a particular file format for booting from SPI.
It consists of a 512-byte header encoded with RC4, some padding and then up
to 32KB of executable code in 2KB blocks, separated by 2KB empty blocks.

Add support to mkimage so that an SPL image (u-boot-spl-dtb.bin) can be
converted to this format. This allows booting from SPI flash on supported
machines.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2015-08-30 16:55:26 -06:00
parent f9a3c278b9
commit 10b84fe1b5
3 changed files with 122 additions and 1 deletions
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3
include/image.h
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@@ -247,8 +247,9 @@ struct lmb;
#define IH_TYPE_LOADABLE 22 /* A list of typeless images */
#define IH_TYPE_RKIMAGE 23 /* Rockchip Boot Image */
#define IH_TYPE_RKSD 24 /* Rockchip SD card */
#define IH_TYPE_RKSPI 25 /* Rockchip SPI image */
#define IH_TYPE_COUNT 25 /* Number of image types */
#define IH_TYPE_COUNT 26 /* Number of image types */
/*
* Compression Types