diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig.debug | 30 | ||||
| -rw-r--r-- | arch/arm/include/debug/mvebu.S | 5 |
2 files changed, 33 insertions, 2 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 1d41908d5cda..e6a6ab1b10d7 100644 --- 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 diff --git a/arch/arm/include/debug/mvebu.S b/arch/arm/include/debug/mvebu.S index df191afa3be1..6517311a1c91 100644 --- 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 |