[PATCH v13 7/9] arm: sa1100: Migrate DEBUG_LL macros to shared directory

From: Daniel Thompson
Date: Mon Nov 17 2014 - 09:49:44 EST

As part of the migration we copy a few definitions from the mach-sa1100
headers and replace the automatic serial port detectiion with explicit
configuration based on DEBUG_UART_PHYS/DEBUG_UART_VIRT.

The removal of the automatic configuration is similar to the way migration
was handled for OMAP2 (see 808b7e07464d...).

Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
---
arch/arm/Kconfig.debug | 39 ++++++++++++++++++--
.../mach/debug-macro.S => include/debug/sa1100.S} | 41 +++++-----------------
2 files changed, 45 insertions(+), 35 deletions(-)
rename arch/arm/{mach-sa1100/include/mach/debug-macro.S => include/debug/sa1100.S} (39%)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 3e1a491f6f29..3070498fb637 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -785,6 +785,30 @@ choice
their output to UART 2. The port must have been initialised
by the boot-loader before use.

+ config DEBUG_SA1100_UART1
+ depends on ARCH_SA1100
+ select DEBUG_SA1100_UART
+ bool "Kernel low-level debugging messages via SA1100 Ser1"
+ help
+ Say Y here if you want kernel low-level debugging support
+ on SA1100 based platforms.
+
+ config DEBUG_SA1100_UART2
+ depends on ARCH_SA1100
+ select DEBUG_SA1100_UART
+ bool "Kernel low-level debugging messages via SA1100 Ser2"
+ help
+ Say Y here if you want kernel low-level debugging support
+ on SA1100 based platforms.
+
+ config DEBUG_SA1100_UART3
+ depends on ARCH_SA1100
+ select DEBUG_SA1100_UART
+ bool "Kernel low-level debugging messages via SA1100 Ser3"
+ help
+ Say Y here if you want kernel low-level debugging support
+ on SA1100 based platforms.
+
config DEBUG_SOCFPGA_UART
depends on ARCH_SOCFPGA
bool "Use SOCFPGA UART for low-level debug"
@@ -1088,6 +1112,10 @@ config DEBUG_TEGRA_UART
bool
depends on ARCH_TEGRA

+config DEBUG_SA1100_UART
+ bool
+ depends on ARCH_SA1100
+
config DEBUG_STI_UART
bool
depends on ARCH_STI
@@ -1118,6 +1146,7 @@ config DEBUG_LL_INCLUDE
default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
default "debug/s5pv210.S" if DEBUG_S5PV210_UART
+ default "debug/sa1100.S" if DEBUG_SA1100_UART
default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
default "debug/sti.S" if DEBUG_STI_UART
default "debug/tegra.S" if DEBUG_TEGRA_UART
@@ -1190,6 +1219,9 @@ config DEBUG_UART_PHYS
DEBUG_S3C2410_UART2)
default 0x78000000 if DEBUG_CNS3XXX
default 0x7c0003f8 if FOOTBRIDGE
+ default 0x80010000 if DEBUG_SA1100_UART1
+ default 0x80030000 if DEBUG_SA1100_UART2
+ default 0x80050000 if DEBUG_SA1100_UART3
default 0x80070000 if DEBUG_IMX23_UART
default 0x80074000 if DEBUG_IMX28_UART
default 0x80230000 if DEBUG_PICOXCELL_UART
@@ -1230,7 +1262,7 @@ config DEBUG_UART_PHYS
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
DEBUG_MSM_UART || DEBUG_NETX_UART || \
DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
- DEBUG_UART_BCM63XX
+ DEBUG_SA1100_UART || DEBUG_UART_BCM63XX

config DEBUG_UART_VIRT
hex "Virtual base address of debug UART"
@@ -1259,6 +1291,9 @@ config DEBUG_UART_VIRT
default 0xf7fc9000 if DEBUG_BERLIN_UART
default 0xf8007000 if DEBUG_HIP04_UART
default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
+ default 0xf8010000 if DEBUG_SA1100_UART1
+ default 0xf8030000 if DEBUG_SA1100_UART2
+ default 0xf8050000 if DEBUG_SA1100_UART3
default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
default 0xfa71e000 if DEBUG_QCOM_UARTDM
default 0xfb002000 if DEBUG_CNS3XXX
@@ -1308,7 +1343,7 @@ config DEBUG_UART_VIRT
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
DEBUG_MSM_UART || DEBUG_NETX_UART || \
DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
- DEBUG_UART_BCM63XX
+ DEBUG_SA1100_UART || DEBUG_UART_BCM63XX

config DEBUG_UART_8250_SHIFT
int "Register offset shift for the 8250 debug UART"
diff --git a/arch/arm/mach-sa1100/include/mach/debug-macro.S b/arch/arm/include/debug/sa1100.S
similarity index 39%
rename from arch/arm/mach-sa1100/include/mach/debug-macro.S
rename to arch/arm/include/debug/sa1100.S
index 530772d937ad..6b5e1ce099d3 100644
--- a/arch/arm/mach-sa1100/include/mach/debug-macro.S
+++ b/arch/arm/include/debug/sa1100.S
@@ -1,5 +1,4 @@
-/* arch/arm/mach-sa1100/include/mach/debug-macro.S
- *
+/*
* Debugging macro include header
*
* Copyright (C) 1994-1999 Russell King
@@ -10,39 +9,15 @@
* published by the Free Software Foundation.
*
*/
-#include <mach/hardware.h>
-
- .macro addruart, rp, rv, tmp
- mrc p15, 0, \rp, c1, c0
- tst \rp, #1 @ MMU enabled?
- moveq \rp, #0x80000000 @ physical base address
- movne \rp, #0xf8000000 @ virtual address
-
- @ We probe for the active serial port here, coherently with
- @ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h.
- @ We assume r1 can be clobbered.

- @ see if Ser3 is active
- add \rp, \rp, #0x00050000
- ldr \rv, [\rp, #UTCR3]
- tst \rv, #UTCR3_TXE
-
- @ if Ser3 is inactive, then try Ser1
- addeq \rp, \rp, #(0x00010000 - 0x00050000)
- ldreq \rv, [\rp, #UTCR3]
- tsteq \rv, #UTCR3_TXE
-
- @ if Ser1 is inactive, then try Ser2
- addeq \rp, \rp, #(0x00030000 - 0x00010000)
- ldreq \rv, [\rp, #UTCR3]
- tsteq \rv, #UTCR3_TXE
-
- @ clear top bits, and generate both phys and virt addresses
- lsl \rp, \rp, #8
- lsr \rp, \rp, #8
- orr \rv, \rp, #0xf8000000 @ virtual
- orr \rp, \rp, #0x80000000 @ physical
+#define UTDR 0x14
+#define UTSR1 0x20
+#define UTSR1_TBY 0x00000001 /* Transmitter BusY (read) */
+#define UTSR1_TNF 0x00000004 /* Transmit FIFO Not Full (read) */

+ .macro addruart, rp, rv, tmp
+ ldr \rp, =CONFIG_DEBUG_UART_PHYS
+ ldr \rv, =CONFIG_DEBUG_UART_VIRT
.endm

.macro senduart,rd,rx
--
1.9.3

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