As part of the migration we introduce DEBUG_UART_PHYS/DEBUG_UART_VIRT which default to UART1 but allow a user to configure UART2 or UART3. We also introduce symbolic names for the registers and flags.

Signed-off-by: Daniel Thompson daniel.thompson@linaro.org Cc: Russell King linux@arm.linux.org.uk Cc: Arnd Bergmann arnd.bergmann@linaro.org Cc: linux-arm-kernel@lists.infradead.org --- arch/arm/Kconfig.debug | 17 +++++++++++++++-- .../mach/debug-macro.S => include/debug/netx.S} | 22 +++++++++++----------- 2 files changed, 26 insertions(+), 13 deletions(-) rename arch/arm/{mach-netx/include/mach/debug-macro.S => include/debug/netx.S} (62%)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 762b3ed..c7e05b7 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -439,6 +439,14 @@ choice Say Y here if you want kernel low-level debugging support on Vybrid based platforms.

+ config DEBUG_NETX_UART + bool "Kernel low-level debugging messages via NetX UART" + depends on ARCH_NETX + select DEBUG_UART_NETX + help + Say Y here if you want kernel low-level debugging support + on Hilscher NetX based platforms. + config DEBUG_NOMADIK_UART bool "Kernel low-level debugging messages via NOMADIK UART" depends on ARCH_NOMADIK @@ -1063,6 +1071,7 @@ config DEBUG_LL_INCLUDE DEBUG_IMX6SX_UART default "debug/ks8695.S" if DEBUG_KS8695_UART default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM + default "debug/netx.S" if DEBUG_NETX_UART default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 @@ -1094,6 +1103,7 @@ config DEBUG_UART_8250

config DEBUG_UART_PHYS hex "Physical base address of debug UART" + default 0x00100a00 if DEBUG_NETX_UART default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0 default 0x01c28000 if DEBUG_SUNXI_UART0 default 0x01c28400 if DEBUG_SUNXI_UART1 @@ -1162,10 +1172,12 @@ config DEBUG_UART_PHYS depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ DEBUG_LL_UART_EFM32 || \ DEBUG_UART_8250 || DEBUG_UART_PL01X || \ - DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART + DEBUG_MSM_UART || DEBUG_NETX_UART || DEBUG_QCOM_UARTDM || \ + DEBUG_S3C24XX_UART

config DEBUG_UART_VIRT hex "Virtual base address of debug UART" + default 0xe0000a00 if DEBUG_NETX_UART default 0xe0010fe0 if ARCH_RPC default 0xe1000000 if DEBUG_MSM_UART default 0xf0000be0 if ARCH_EBSA110 @@ -1232,7 +1244,8 @@ config DEBUG_UART_VIRT default DEBUG_UART_PHYS if !MMU depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ DEBUG_UART_8250 || DEBUG_UART_PL01X || \ - DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART + DEBUG_MSM_UART || DEBUG_NETX_UART || DEBUG_QCOM_UARTDM || \ + DEBUG_S3C24XX_UART

config DEBUG_UART_8250_SHIFT int "Register offset shift for the 8250 debug UART" diff --git a/arch/arm/mach-netx/include/mach/debug-macro.S b/arch/arm/include/debug/netx.S similarity index 62% rename from arch/arm/mach-netx/include/mach/debug-macro.S rename to arch/arm/include/debug/netx.S index 247781e..cf7522a 100644 --- a/arch/arm/mach-netx/include/mach/debug-macro.S +++ b/arch/arm/include/debug/netx.S @@ -1,5 +1,4 @@ -/* arch/arm/mach-netx/include/mach/debug-macro.S - * +/* * Debugging macro include header * * Copyright (C) 1994-1999 Russell King @@ -11,26 +10,27 @@ * */

-#include "hardware.h" +#define UART_DATA 0 +#define UART_FLAG 0x18 +#define UART_FLAG_BUSY (1 << 3)

.macro addruart, rp, rv, tmp - mov \rp, #0x00000a00 - orr \rv, \rp, #io_p2v(0x00100000) @ virtual - orr \rp, \rp, #0x00100000 @ physical + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rp, =CONFIG_DEBUG_UART_VIRT .endm

.macro senduart,rd,rx - str \rd, [\rx, #0] + str \rd, [\rx, #UART_DATA] .endm

.macro busyuart,rd,rx -1002: ldr \rd, [\rx, #0x18] - tst \rd, #(1 << 3) +1002: ldr \rd, [\rx, #UART_FLAG] + tst \rd, #UART_FLAG_BUSY bne 1002b .endm

.macro waituart,rd,rx -1001: ldr \rd, [\rx, #0x18] - tst \rd, #(1 << 3) +1001: ldr \rd, [\rx, #UART_FLAG] + tst \rd, #UART_FLAG_BUSY bne 1001b .endm