From 80757f2335c93fbb9a8fa5a2e68f8ef46d2d5081 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 14 May 2015 09:35:46 +0200 Subject: ARM: ux500: remap BB offset dynamically Instead of relying on static maps, remap the BB chip ID offset dynamically. Signed-off-by: Linus Walleij --- arch/arm/mach-ux500/cpu-db8500.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index 391d329a7e88..0b3ebbf38702 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -104,14 +104,18 @@ static struct arm_pmu_platdata db8500_pmu_platdata = { static const char *db8500_read_soc_id(void) { - void __iomem *uid = __io_address(U8500_BB_UID_BASE); + void __iomem *uid; + uid = ioremap(U8500_BB_UID_BASE, 0x20); + if (!uid) + return NULL; /* Throw these device-specific numbers into the entropy pool */ add_device_randomness(uid, 0x14); return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x", readl((u32 *)uid+0), readl((u32 *)uid+1), readl((u32 *)uid+2), readl((u32 *)uid+3), readl((u32 *)uid+4)); + iounmap(uid); } static struct device * __init db8500_soc_device_init(void) -- cgit