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[ARM] 3527/1: MPCore Boot Lockup Fix

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Patch from Harry Fearnhamm

This patch fixes the occasional lockup seen in early boot stage
on RealView MPCore system.

Signed-off-by: Harry Fearnhamm <Harry.Fearnhamm@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Harry Fearnhamm 2006-05-16 16:50:21 +01:00 committed by Russell King
parent 9d494ccb9c
commit bb1a2aa617
1 changed files with 4 additions and 1 deletions
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5
arch/arm/mach-realview/realview_eb.c
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@ -137,8 +137,11 @@ static struct amba_device *amba_devs[] __initdata = {
static void __init gic_init_irq(void)
{
#ifdef CONFIG_REALVIEW_MPCORE
unsigned int pldctrl;
writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
writel(0x008003c0, __io_address(REALVIEW_SYS_BASE) + 0xd8);
pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + 0xd8);
pldctrl |= 0x00800000; /* New irq mode */
writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + 0xd8);
writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
#endif
gic_dist_init(__io_address(REALVIEW_GIC_DIST_BASE));