Hi kukjin, On 09/26/2014 07:43 PM, Joonyoung Shim wrote: > The exynos5 SoCs using A15+A7 can boot to A15 or A7. If it boots using > A7, it can't detect right UART physical address only the part number of > CP15. It's possible to solve as checking Cluster ID additionally. > > Signed-off-by: Joonyoung Shim <[email protected]> > --- > arch/arm/include/debug/exynos.S | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/include/debug/exynos.S b/arch/arm/include/debug/exynos.S > index b17fdb7..60bf3c2 100644 > --- a/arch/arm/include/debug/exynos.S > +++ b/arch/arm/include/debug/exynos.S > @@ -24,7 +24,11 @@ > mrc p15, 0, \tmp, c0, c0, 0 > and \tmp, \tmp, #0xf0 > teq \tmp, #0xf0 @@ A15 > - ldreq \rp, =EXYNOS5_PA_UART > + beq 100f > + mrc p15, 0, \tmp, c0, c0, 5 > + and \tmp, \tmp, #0xf00 > + teq \tmp, #0x100 @@ A15 + A7 but boot to A7 > +100: ldreq \rp, =EXYNOS5_PA_UART > movne \rp, #EXYNOS4_PA_UART @@ EXYNOS4 > ldr \rv, =S3C_VA_UART > #if CONFIG_DEBUG_S3C_UART != 0 >
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