Add Milbeaut M10V earlyprintk. Signed-off-by: Sugaya Taichi <sugaya.taichi@xxxxxxxxxxxxx> --- arch/arm/Kconfig.debug | 12 ++++++++++-- arch/arm/include/debug/milbeaut.S | 25 +++++++++++++++++++++++++ 2 files changed, 35 insertions(+), 2 deletions(-) create mode 100644 arch/arm/include/debug/milbeaut.S diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index d6a49f5..5c44533 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1413,6 +1413,11 @@ choice options; the platform specific options are deprecated and will be soon removed. + config DEBUG_LL_MILBEAUT_UART + bool "Kernel low-level debug output via USIO" + depends on ARCH_MILBEAUT + help + Say Y here if you want to debug with USIO endchoice config DEBUG_AT91_UART @@ -1534,6 +1539,7 @@ config DEBUG_LL_INCLUDE default "debug/bcm63xx.S" if DEBUG_BCM63XX_UART default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0 default "debug/brcmstb.S" if DEBUG_BRCMSTB_UART + default "debug/milbeaut.S" if DEBUG_LL_MILBEAUT_UART default "mach/debug-macro.S" # Compatibility options for PL01x @@ -1580,6 +1586,7 @@ config DEBUG_UART_PHYS default 0x18020000 if DEBUG_SIRFATLAS7_UART1 default 0x18023000 if DEBUG_BCM_IPROC_UART3 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1 + default 0x1e700010 if ARCH_MILBEAUT_M10V default 0x20001000 if DEBUG_HIP01_UART default 0x20060000 if DEBUG_RK29_UART0 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 @@ -1681,7 +1688,7 @@ config DEBUG_UART_PHYS DEBUG_S3C64XX_UART || \ DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \ DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \ - DEBUG_AT91_UART + DEBUG_AT91_UART || DEBUG_LL_MILBEAUT_UART config DEBUG_UART_VIRT hex "Virtual base address of debug UART" @@ -1755,6 +1762,7 @@ config DEBUG_UART_VIRT default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART default 0xfe230000 if DEBUG_PICOXCELL_UART default 0xfe300000 if DEBUG_BCM_KONA_UART + default 0xfe700010 if ARCH_MILBEAUT_M10V default 0xfe800000 if ARCH_IOP32X default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART default 0xfeb24000 if DEBUG_RK3X_UART0 @@ -1796,7 +1804,7 @@ config DEBUG_UART_VIRT DEBUG_S3C64XX_UART || \ DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \ DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \ - DEBUG_AT91_UART + DEBUG_AT91_UART || DEBUG_LL_MILBEAUT_UART config DEBUG_UART_8250_SHIFT int "Register offset shift for the 8250 debug UART" diff --git a/arch/arm/include/debug/milbeaut.S b/arch/arm/include/debug/milbeaut.S new file mode 100644 index 0000000..0660e0f --- /dev/null +++ b/arch/arm/include/debug/milbeaut.S @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018 Socionext Inc. + */ + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + + .macro senduart,rd,rx + strh \rd, [\rx, #0x04] @ write to TxData register + .endm + + .macro waituart,rd,rx +1: ldrb \rd, [\rx, #0x03] @ SSR + tst \rd, #1 << 1 @ check TDRE bit + beq 1b + .endm + + .macro busyuart,rd,rx +2: ldrb \rd, [\rx, #0x03] @ SSR + tst \rd, #1 << 1 @ check TEMT bit + beq 2b + .endm -- 1.9.1
