2 * linux/arch/arm/kernel/smp_scu.c
4 * Copyright (C) 2002 ARM Ltd.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 #include <linux/init.h>
14 #include <asm/smp_scu.h>
17 #define SCU_CONFIG 0x04
18 #define SCU_CPU_STATUS 0x08
19 #define SCU_INVALIDATE 0x0c
20 #define SCU_FPGA_REVISION 0x10
23 * Get the number of CPU cores from the SCU configuration
25 unsigned int __init scu_get_core_count(void __iomem *scu_base)
27 unsigned int ncores = __raw_readl(scu_base + SCU_CONFIG);
28 return (ncores & 0x03) + 1;
34 void __init scu_enable(void __iomem *scu_base)
38 scu_ctrl = __raw_readl(scu_base + SCU_CTRL);
40 __raw_writel(scu_ctrl, scu_base + SCU_CTRL);