From: jun.nie@linaro.org (Jun Nie)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 3/9] ARM: zx: add low level debug support for zx296702
Date: Mon, 27 Apr 2015 16:50:40 +0800 [thread overview]
Message-ID: <1430124644-16715-4-git-send-email-jun.nie@linaro.org> (raw)
In-Reply-To: <1430124644-16715-1-git-send-email-jun.nie@linaro.org>
Use the UART0 peripheral for low level debug. Only the UART port 0 is
currently supported.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
---
arch/arm/Kconfig.debug | 14 ++++++++++++++
arch/arm/include/debug/pl01x.S | 7 +++++++
2 files changed, 21 insertions(+)
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 0c12ffb..b637563 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1157,6 +1157,18 @@ choice
For more details about semihosting, please see
chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
+ config DEBUG_ZTE_ZX
+ bool "Use ZTE ZX UART"
+ select DEBUG_UART_PL01X
+ depends on ARCH_ZX
+ help
+ Say Y here if you are enabling ZTE ZX296702 SOC and need
+ debug uart support.
+
+ This option is preferred over the platform specific
+ options; the platform specific options are deprecated
+ and will be soon removed.
+
config DEBUG_LL_UART_8250
bool "Kernel low-level debugging via 8250 UART"
help
@@ -1337,6 +1349,7 @@ config DEBUG_UART_PHYS
default 0x02531000 if DEBUG_KEYSTONE_UART1
default 0x03010fe0 if ARCH_RPC
default 0x07000000 if DEBUG_SUN9I_UART0
+ default 0x09405000 if DEBUG_ZTE_ZX
default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
DEBUG_VEXPRESS_UART0_CA9
default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
@@ -1466,6 +1479,7 @@ config DEBUG_UART_VIRT
default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
default 0xfc40ab00 if DEBUG_BRCMSTB_UART
+ default 0xfc705000 if DEBUG_ZTE_ZX
default 0xfcfe8600 if DEBUG_UART_BCM63XX
default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
default 0xfd000000 if ARCH_SPEAR13XX
diff --git a/arch/arm/include/debug/pl01x.S b/arch/arm/include/debug/pl01x.S
index 92ef808..f7d8323 100644
--- a/arch/arm/include/debug/pl01x.S
+++ b/arch/arm/include/debug/pl01x.S
@@ -12,6 +12,13 @@
*/
#include <linux/amba/serial.h>
+#ifdef CONFIG_DEBUG_ZTE_ZX
+#undef UART01x_DR
+#undef UART01x_FR
+#define UART01x_DR 0x04
+#define UART01x_FR 0x14
+#endif
+
#ifdef CONFIG_DEBUG_UART_PHYS
.macro addruart, rp, rv, tmp
ldr \rp, =CONFIG_DEBUG_UART_PHYS
--
1.9.1
next prev parent reply other threads:[~2015-04-27 8:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-27 8:50 [PATCH v3 0/9] Basic support to ZTE ZX296702 Jun Nie
2015-04-27 8:50 ` [PATCH v3 1/9] ARM: zx: add basic support for " Jun Nie
2015-04-27 8:50 ` [PATCH v3 2/9] MAINTAINERS: add entry for ARM ZTE architecture Jun Nie
2015-04-27 8:50 ` Jun Nie [this message]
2015-04-27 8:50 ` [PATCH v3 4/9] ARM: dts: zx: add an initial zx296702 dts and doc Jun Nie
2015-04-27 8:50 ` [PATCH v3 5/9] clk: zx: add clock support to zx296702 Jun Nie
2015-04-27 8:50 ` [PATCH v3 6/9] ARM: zx: enable SMP and hotplug for zx296702 Jun Nie
2015-04-27 8:50 ` [PATCH v3 7/9] ARM: zx: Add basic defconfig support for ZX296702 Jun Nie
2015-04-27 13:13 ` Shawn Guo
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