1/* 2 * Copyright 2007-2009 Analog Devices Inc. 3 * Graff Yang <graf.yang@analog.com> 4 * 5 * Licensed under the GPL-2 or later. 6 */ 7 8#include <asm/blackfin.h> 9#include <asm/smp.h> 10#define SIC_SYSIRQ(irq) (irq - (IRQ_CORETMR + 1)) 11 12int hotplug_coreb; 13 14void platform_cpu_die(void) 15{ 16 unsigned long iwr[2] = {0, 0}; 17 unsigned long bank = SIC_SYSIRQ(IRQ_SUPPLE_0) / 32; 18 unsigned long bit = 1 << (SIC_SYSIRQ(IRQ_SUPPLE_0) % 32); 19 20 hotplug_coreb = 1; 21 22 iwr[bank] = bit; 23 24 /* disable core timer */ 25 bfin_write_TCNTL(0); 26 27 /* clear ipi interrupt IRQ_SUPPLE_0 */ 28 bfin_write_SICB_SYSCR(bfin_read_SICB_SYSCR() | (1 << (10 + 1))); 29 SSYNC(); 30 31 coreb_sleep(iwr[0], iwr[1], 0); 32} 33