diff options
Diffstat (limited to 'arch/powerpc/mach-mpc5xxx/cpu_init.c')
| -rw-r--r-- | arch/powerpc/mach-mpc5xxx/cpu_init.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/powerpc/mach-mpc5xxx/cpu_init.c b/arch/powerpc/mach-mpc5xxx/cpu_init.c new file mode 100644 index 0000000000..1dae6c1e46 --- /dev/null +++ b/arch/powerpc/mach-mpc5xxx/cpu_init.c @@ -0,0 +1,52 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <common.h> +#include <mach/mpc5xxx.h> +#include <types.h> + +/* + * Breath some life into the CPU... + * + * initialize a bunch of registers. + */ +int cpu_init(void) +{ + /* enable timebase */ + *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 13); + + /* Enable snooping for RAM */ + *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 15); + *(vu_long *)(MPC5XXX_XLBARB + 0x70) = 0 | 0x1d; + + /* Configure the XLB Arbiter */ + *(vu_long *)MPC5XXX_XLBARB_MPRIEN = 0xff; + *(vu_long *)MPC5XXX_XLBARB_MPRIVAL = 0x11111111; + + /* mask all interrupts */ + *(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xffffff00; + + *(vu_long *)MPC5XXX_ICTL_CRIT |= 0x0001ffff; + *(vu_long *)MPC5XXX_ICTL_EXT &= ~0x00000f00; + /* route critical ints to normal ints */ + *(vu_long *)MPC5XXX_ICTL_EXT |= 0x00000001; + + return 0; +} + |