MACHINE_START(AUTCPU12, "autronix autcpu12")
        /* Maintainer: Thomas Gleixner */
-       .boot_params    = 0xc0020000,
+       .atag_offset    = 0x20000,
        .map_io         = autcpu12_map_io,
        .init_irq       = clps711x_init_irq,
        .timer          = &clps711x_timer,
 
 
 MACHINE_START(CDB89712, "Cirrus-CDB89712")
        /* Maintainer: Ray Lehtiniemi */
-       .boot_params    = 0xc0000100,
+       .atag_offset    = 0x100,
        .map_io         = cdb89712_map_io,
        .init_irq       = clps711x_init_irq,
        .timer          = &clps711x_timer,
 
 
 MACHINE_START(CEIVA, "CEIVA/Polaroid Photo MAX Digital Picture Frame")
        /* Maintainer: Rob Scott */
-       .boot_params    = 0xc0000100,
+       .atag_offset    = 0x100,
        .map_io         = ceiva_map_io,
        .init_irq       = clps711x_init_irq,
        .timer          = &clps711x_timer,
 
 
 MACHINE_START(CLEP7212, "Cirrus Logic 7212/7312")
        /* Maintainer: Nobody */
-       .boot_params    = 0xc0000100,
+       .atag_offset    = 0x0100,
        .fixup          = fixup_clep7312,
        .map_io         = clps711x_map_io,
        .init_irq       = clps711x_init_irq,
 
 
 MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
        /* Maintainer: Jon McClintock */
-       .boot_params    = 0xc0020100,   /* 0xc0000000 - 0xc001ffff can be video RAM */
+       .atag_offset    = 0x20100,      /* 0xc0000000 - 0xc001ffff can be video RAM */
        .fixup          = fixup_edb7211,
        .map_io         = edb7211_map_io,
        .reserve        = edb7211_reserve,
 
 
 MACHINE_START(FORTUNET, "ARM-FortuNet")
        /* Maintainer: FortuNet Inc. */
-       .boot_params    = 0x00000000,
        .fixup          = fortunet_fixup,
        .map_io         = clps711x_map_io,
        .init_irq       = clps711x_init_irq,
 
 
 MACHINE_START(P720T, "ARM-Prospector720T")
        /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-       .boot_params    = 0xc0000100,
+       .atag_offset    = 0x100,
        .fixup          = fixup_p720t,
        .map_io         = p720t_map_io,
        .init_irq       = clps711x_init_irq,