[PATCH 03/10] ARM: ux500: remap BB offset dynamically
From: Linus Walleij <hidden>
Date: 2015-05-14 16:12:47
Subsystem:
arm port, arm/nomadik/ux500 architectures, the rest · Maintainers:
Russell King, Linus Walleij, Linus Torvalds
Instead of relying on static maps, remap the BB chip ID offset dynamically. Signed-off-by: Linus Walleij <redacted> --- arch/arm/mach-ux500/cpu-db8500.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
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)
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1.9.3