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authorRussell King <rmk+kernel@arm.linux.org.uk>2013-07-07 15:05:49 (GMT)
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-08-25 16:11:09 (GMT)
commitf2acf003cd399994172a5ec342b47741841746f1 (patch)
treefda1158862098c1ad8cfaa1fa7cc7aedc0aa7bf2 /arch
parent99166883376e40717d11c98ddcb724ab966de0b6 (diff)
downloadlinux-f2acf003cd399994172a5ec342b47741841746f1.tar.xz
ARM: debug: move keystone debug to generic 8250 code
Keystone's debugging is just a copy of the old 8250_32 code with a different base address. Incorporate this into the generic 8250 debug code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/Kconfig.debug11
-rw-r--r--arch/arm/include/debug/keystone.S43
2 files changed, 8 insertions, 46 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 8a8df44..cd2f88e 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -266,6 +266,7 @@ choice
config DEBUG_KEYSTONE_UART0
bool "Kernel low-level debugging on KEYSTONE2 using UART0"
depends on ARCH_KEYSTONE
+ select DEBUG_UART_8250
help
Say Y here if you want the debug print routines to direct
their output to UART0 serial port on KEYSTONE2 devices.
@@ -273,6 +274,7 @@ choice
config DEBUG_KEYSTONE_UART1
bool "Kernel low-level debugging on KEYSTONE2 using UART1"
depends on ARCH_KEYSTONE
+ select DEBUG_UART_8250
help
Say Y here if you want the debug print routines to direct
their output to UART1 serial port on KEYSTONE2 devices.
@@ -873,8 +875,6 @@ config DEBUG_LL_INCLUDE
DEBUG_IMX53_UART ||\
DEBUG_IMX6Q_UART || \
DEBUG_IMX6SL_UART
- default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \
- DEBUG_KEYSTONE_UART1
default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
default "debug/sti.S" if DEBUG_STI_UART
@@ -903,6 +903,8 @@ config DEBUG_UART_PHYS
hex "Physical base address of debug UART"
default 0x01c28000 if DEBUG_SUNXI_UART0
default 0x01c28400 if DEBUG_SUNXI_UART1
+ default 0x02530c00 if DEBUG_KEYSTONE_UART0
+ default 0x02531000 if DEBUG_KEYSTONE_UART1
default 0x03010fe0 if ARCH_RPC
default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \
DEBUG_VEXPRESS_UART0_CA9
@@ -973,6 +975,8 @@ config DEBUG_UART_VIRT
default 0xfe800000 if ARCH_IOP32X
default 0xfeb24000 if DEBUG_RK3X_UART0
default 0xfeb26000 if DEBUG_RK3X_UART1
+ default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
+ default 0xfeb31000 if DEBUG_KEYSTONE_UART1
default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE
default 0xfed60000 if DEBUG_RK29_UART0
default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
@@ -1002,7 +1006,8 @@ config DEBUG_UART_8250_WORD
bool "Use 32-bit accesses for 8250 UART"
depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
depends on DEBUG_UART_8250_SHIFT >= 2
- default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART
+ default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
+ ARCH_KEYSTONE
config DEBUG_UART_8250_FLOW_CONTROL
bool "Enable flow control for 8250 UART"
diff --git a/arch/arm/include/debug/keystone.S b/arch/arm/include/debug/keystone.S
deleted file mode 100644
index 9aef9ba..0000000
--- a/arch/arm/include/debug/keystone.S
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Early serial debug output macro for Keystone SOCs
- *
- * Copyright 2013 Texas Instruments, Inc.
- * Santosh Shilimkar <santosh.shilimkar@ti.com>
- *
- * Based on RMKs low level debug code.
- * Copyright (C) 1994-1999 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/serial_reg.h>
-
-#define UART_SHIFT 2
-#if defined(CONFIG_DEBUG_KEYSTONE_UART0)
-#define UART_PHYS 0x02530c00
-#define UART_VIRT 0xfeb30c00
-#elif defined(CONFIG_DEBUG_KEYSTONE_UART1)
-#define UART_PHYS 0x02531000
-#define UART_VIRT 0xfeb31000
-#endif
-
- .macro addruart, rp, rv, tmp
- ldr \rv, =UART_VIRT @ physical base address
- ldr \rp, =UART_PHYS @ virtual base address
- .endm
-
- .macro senduart,rd,rx
- str \rd, [\rx, #UART_TX << UART_SHIFT]
- .endm
-
- .macro busyuart,rd,rx
-1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
- and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
- teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
- bne 1002b
- .endm
-
- .macro waituart,rd,rx
- .endm