| Message ID | 1411728234-29705-1-git-send-email-jy0922.shim@samsung.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
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 <jy0922.shim@samsung.com> > --- > 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 > Any comments? Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Jan 19, 2015 at 7:55 AM, Joonyoung Shim <jy0922.shim@samsung.com> wrote: > 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 <jy0922.shim@samsung.com> >> --- >> arch/arm/include/debug/exynos.S | 6 +++++- >> 1 file changed, 5 insertions(+), 1 deletion(-) >> This is an old patch... but still valid and needed on Odroid XU family. Tested by Marek Szyprowski. Applied, thanks! BR, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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
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 <jy0922.shim@samsung.com> --- arch/arm/include/debug/exynos.S | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)