blob: c95169b612dca192e66c681e20783a60ff25fb98 [file] [log] [blame]
Graf Yang0b39db22009-12-28 11:13:51 +00001/*
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}