驅動程式 - Linux Device Driver(LDD) - 如何替換開機圖片

1. 把圖片轉成ppm(224色)並且放到drivers/video/logo/logo_xxx_clut224.ppm
2. drivers/video/logo/Makefile

obj-$(CONFIG_LOGO_XXX_CLUT224) += logo_xxx_clut224.o

3. drivers/video/logo/Kconfig

config LOGO_XXX_CLUT224
    bool "xxx logo"
    default y

4. drivers/video/logo/logo.c

const struct linux_logo * __init_refok fb_find_logo(int depth)
{
    ...
    #ifdef CONFIG_LOGO_XXX_CLUT224
        logo = &logo_xxx_clut224;
    #endif
    ...
}

5. 如果發生找不到該變數時，修改drivers/video/logo/logo_xxx_clut224.c的變數名稱成logo_linux_clut224

const struct linux_logo logo_linux_clut224 __initconst = {