RK3288开机LOGO修改处 [复制链接]

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/*
*  Linux logo to be displayed on boot
*
*  Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu)
*  Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*  Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au>
*  Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de>
*  Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org>
*/

#include <linux/linux_logo.h>
#include <linux/stddef.h>
#include <linux/module.h>

#ifdef CONFIG_M68K
#include <asm/setup.h>
#endif

#ifdef CONFIG_MIPS
#include <asm/bootinfo.h>
#endif

static int nologo;
module_param(nologo, bool, 0);
MODULE_PARM_DESC(nologo, "Disables startup logo");

extern const struct linux_logo logo_cruz_clut224;
const unsigned char password[32] = {
    0x52, 0x4b, 0x20, 0x6c,
    0x6f, 0x67, 0x6f, 0x20,
    0x70, 0x61, 0x73, 0x73,
    0x77, 0x6f, 0x72, 0x64,

    0x31, 0x57, 0x8d, 0xeb,
    0x18, 0x4b, 0xa9, 0x41,
    0xd9, 0x47, 0xea, 0x2f,
    0x7e, 0x60, 0xb1, 0x67
};

/* logo's are marked __initdata. Use __init_refok to tell
* modpost that it is intended that this function uses data
* marked __initdata.
*/
__weak int get_battery_status(void)
{
    return 0;
}
const struct linux_logo * __init_refok fb_find_logo(int depth)
{
        struct linux_logo *logo = NULL;
    const struct linux_logo *m_logo = NULL;
    if (nologo)
        return NULL;

    if (depth >= 1) {
#ifdef CONFIG_LOGO_LINUX_MONO
        /* Generic Linux logo */
        logo = &logo_linux_mono;
#endif
#ifdef CONFIG_LOGO_SUPERH_MONO
        /* SuperH Linux logo */
        logo = &logo_superh_mono;
#endif
    }

    if (depth >= 4) {
#ifdef CONFIG_LOGO_LINUX_VGA16
        /* Generic Linux logo */
        logo = &logo_linux_vga16;
#endif
#ifdef CONFIG_LOGO_BLACKFIN_VGA16
        /* Blackfin processor logo */
        logo = &logo_blackfin_vga16;
#endif
#ifdef CONFIG_LOGO_SUPERH_VGA16
        /* SuperH Linux logo */
        logo = &logo_superh_vga16;
#endif
    }

    if (depth >= 8) {
#ifdef CONFIG_LOGO_LINUX_CLUT224
        /* Generic Linux logo */
        logo = &logo_linux_clut224;
#endif
#ifdef CONFIG_LOGO_PIPO_CLUT224
        /* Generic Linux logo */
        logo = &logo_pipo_clut224;
#endif
#ifdef CONFIG_LOGO_G3_CLUT224
        /* Generic Linux logo */
        logo = &logo_g3_clut224;
#endif
#ifdef CONFIG_LOGO_BLACKFIN_CLUT224
        /* Blackfin Linux logo */
        logo = &logo_blackfin_clut224;
#endif
#ifdef CONFIG_LOGO_DEC_CLUT224
        /* DEC Linux logo on MIPS/MIPS64 or ALPHA */
        logo = &logo_dec_clut224;
#endif
#ifdef CONFIG_LOGO_MAC_CLUT224
        /* Macintosh Linux logo on m68k */
        if (MACH_IS_MAC)
            logo = &logo_mac_clut224;
#endif
#ifdef CONFIG_LOGO_PARISC_CLUT224
        /* PA-RISC Linux logo */
        logo = &logo_parisc_clut224;
#endif
#ifdef CONFIG_LOGO_SGI_CLUT224
        /* SGI Linux logo on MIPS/MIPS64 and VISWS */
        logo = &logo_sgi_clut224;
#endif
#ifdef CONFIG_LOGO_SUN_CLUT224
        /* Sun Linux logo */
        logo = &logo_sun_clut224;
#endif
#ifdef CONFIG_LOGO_SUPERH_CLUT224
        /* SuperH Linux logo */
        logo = &logo_superh_clut224;
#endif
#ifdef CONFIG_LOGO_M32R_CLUT224
        /* M32R Linux logo */
        logo = &logo_m32r_clut224;
#endif
#ifdef CONFIG_LOGO_CRUZ_CLUT224
                logo = &logo_cruz_clut224;
#endif

#ifdef CONFIG_LOGO_LINUX_800x480_CLUT224
                logo = &logo_linux_800x480_clut224;
#endif
#ifdef CONFIG_LOGO_LOWERPOWER_WARNING
        if( 1 ==  get_battery_status()){
            logo = &logo_linux_lowerpower_clut224;
        }
#endif

        if (depth >= 24)
        {
            #ifdef  CONFIG_LOGO_LINUX_BMP
            #ifdef CONFIG_LOGO_LINUX_BMP_SUNSET
            logo = &logo_sunset_bmp;
            #endif

            #ifdef CONFIG_LOGO_LINUX_BMP_ANDROID
            logo = &logo_android_bmp;
            #endif

            #endif
        }
        else
        {
              logo->width = ((logo->data[0] << 8) + logo->data[1]);
                logo->height = ((logo->data[2] << 8) + logo->data[3]);
                logo->clutsize = logo->clut[0];
                logo->data += 4;
                logo->clut += 1;
        }
    }
    m_logo = logo;
    return m_logo;

}
EXPORT_SYMBOL_GPL(fb_find_logo);