You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
3.2 KiB
86 lines
3.2 KiB
11 years ago
|
From 70c30ca997919a4b8c9051a3903f30c79c735f12 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
Date: Wed, 5 Jun 2013 09:05:00 +0200
|
||
|
|
Subject: [PATCH 030/203] arm: mvebu: add another earlyprintk Kconfig option
|
||
|
|
|
||
|
|
In order to support both old and new bootloaders, we add a new Kconfig
|
||
|
|
option for the earlyprintk UART selection. The existing option allows
|
||
|
|
to work with old bootloaders (that keep the internal registers mapped
|
||
|
|
at 0xd0000000), while the newly introduced option allows to work with
|
||
|
|
new bootloaders (that remap the internal registers at 0xf1000000).
|
||
|
|
|
||
|
|
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
Acked-by: Arnd Bergmann <arnd@arndb.de>
|
||
|
|
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
|
||
|
|
---
|
||
|
|
arch/arm/Kconfig.debug | 30 ++++++++++++++++++++++++++++--
|
||
|
|
arch/arm/include/debug/mvebu.S | 5 +++++
|
||
|
|
2 files changed, 33 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/arch/arm/Kconfig.debug
|
||
|
|
+++ b/arch/arm/Kconfig.debug
|
||
|
|
@@ -303,12 +303,37 @@ choice
|
||
|
|
their output to the serial port on MSM 8960 devices.
|
||
|
|
|
||
|
|
config DEBUG_MVEBU_UART
|
||
|
|
- bool "Kernel low-level debugging messages via MVEBU UART"
|
||
|
|
+ bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
|
||
|
|
depends on ARCH_MVEBU
|
||
|
|
help
|
||
|
|
Say Y here if you want kernel low-level debugging support
|
||
|
|
on MVEBU based platforms.
|
||
|
|
|
||
|
|
+ This option should be used with the old bootloaders
|
||
|
|
+ that left the internal registers mapped at
|
||
|
|
+ 0xd0000000. As of today, this is the case on
|
||
|
|
+ platforms such as the Globalscale Mirabox or the
|
||
|
|
+ Plathome OpenBlocks AX3, when using the original
|
||
|
|
+ bootloader.
|
||
|
|
+
|
||
|
|
+ If the wrong DEBUG_MVEBU_UART* option is selected,
|
||
|
|
+ when u-boot hands over to the kernel, the system
|
||
|
|
+ silently crashes, with no serial output at all.
|
||
|
|
+
|
||
|
|
+ config DEBUG_MVEBU_UART_ALTERNATE
|
||
|
|
+ bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)"
|
||
|
|
+ depends on ARCH_MVEBU
|
||
|
|
+ help
|
||
|
|
+ Say Y here if you want kernel low-level debugging support
|
||
|
|
+ on MVEBU based platforms.
|
||
|
|
+
|
||
|
|
+ This option should be used with the new bootloaders
|
||
|
|
+ that remap the internal registers at 0xf1000000.
|
||
|
|
+
|
||
|
|
+ If the wrong DEBUG_MVEBU_UART* option is selected,
|
||
|
|
+ when u-boot hands over to the kernel, the system
|
||
|
|
+ silently crashes, with no serial output at all.
|
||
|
|
+
|
||
|
|
config DEBUG_NOMADIK_UART
|
||
|
|
bool "Kernel low-level debugging messages via NOMADIK UART"
|
||
|
|
depends on ARCH_NOMADIK
|
||
|
|
@@ -632,7 +657,8 @@ config DEBUG_LL_INCLUDE
|
||
|
|
DEBUG_IMX51_UART || \
|
||
|
|
DEBUG_IMX53_UART ||\
|
||
|
|
DEBUG_IMX6Q_UART
|
||
|
|
- default "debug/mvebu.S" if DEBUG_MVEBU_UART
|
||
|
|
+ default "debug/mvebu.S" if DEBUG_MVEBU_UART || \
|
||
|
|
+ DEBUG_MVEBU_UART_ALTERNATE
|
||
|
|
default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
|
||
|
|
default "debug/nomadik.S" if DEBUG_NOMADIK_UART
|
||
|
|
default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
|
||
|
|
--- a/arch/arm/include/debug/mvebu.S
|
||
|
|
+++ b/arch/arm/include/debug/mvebu.S
|
||
|
|
@@ -11,7 +11,12 @@
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
+#ifdef CONFIG_DEBUG_MVEBU_UART_ALTERNATE
|
||
|
|
+#define ARMADA_370_XP_REGS_PHYS_BASE 0xf1000000
|
||
|
|
+#else
|
||
|
|
#define ARMADA_370_XP_REGS_PHYS_BASE 0xd0000000
|
||
|
|
+#endif
|
||
|
|
+
|
||
|
|
#define ARMADA_370_XP_REGS_VIRT_BASE 0xfec00000
|
||
|
|
|
||
|
|
.macro addruart, rp, rv, tmp
|