From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757474AbbAHTki (ORCPT ); Thu, 8 Jan 2015 14:40:38 -0500 Received: from guitar.tcltek.co.il ([192.115.133.116]:42669 "EHLO mx.tkos.co.il" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757344AbbAHTkh (ORCPT ); Thu, 8 Jan 2015 14:40:37 -0500 From: Baruch Siach To: linux-arm-kernel@lists.infradead.org, Russell King Cc: Baruch Siach , linux-kernel@vger.kernel.org Subject: [PATCH v2 2/8] ARM: digicolor: add low level debug support Date: Thu, 8 Jan 2015 21:39:58 +0200 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Baruch Siach --- arch/arm/Kconfig.debug | 12 ++++++++++-- arch/arm/include/debug/digicolor.S | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+), 2 deletions(-) create mode 100644 arch/arm/include/debug/digicolor.S diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 5ddd4906f7a7..7ccab0629dd2 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -241,6 +241,13 @@ choice Say Y here if you want the debug print routines to direct their output to the serial port in the DC21285 (Footbridge). + config DEBUG_DIGICOLOR_UA0 + bool "Kernel low-level debugging messages via Digicolor UA0" + depends on ARCH_DIGICOLOR + help + Say Y here if you want the debug print routines to direct + their output to the UA0 serial port in the CX92755. + config DEBUG_FOOTBRIDGE_COM1 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" depends on FOOTBRIDGE @@ -1204,6 +1211,7 @@ config DEBUG_LL_INCLUDE default "debug/vt8500.S" if DEBUG_VT8500_UART0 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 default "debug/bcm63xx.S" if DEBUG_UART_BCM63XX + default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0 default "mach/debug-macro.S" # Compatibility options for PL01x @@ -1320,7 +1328,7 @@ config DEBUG_UART_PHYS DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \ DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \ DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \ - DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART + DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || DEBUG_DIGICOLOR_UA0 config DEBUG_UART_VIRT hex "Virtual base address of debug UART" @@ -1398,7 +1406,7 @@ config DEBUG_UART_VIRT depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \ DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \ - DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART + DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || DEBUG_DIGICOLOR_UA0 config DEBUG_UART_8250_SHIFT int "Register offset shift for the 8250 debug UART" diff --git a/arch/arm/include/debug/digicolor.S b/arch/arm/include/debug/digicolor.S new file mode 100644 index 000000000000..c9517150766a --- /dev/null +++ b/arch/arm/include/debug/digicolor.S @@ -0,0 +1,35 @@ +/* + * Debugging macro include header for Conexant Digicolor USART + * + * Copyright (C) 2014 Paradox Innovation Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * +*/ + +#define UA0_STATUS 0x0742 +#define UA0_EMI_REC 0x0744 + +#define UA0_STATUS_TX_READY 0x40 + +#ifdef CONFIG_DEBUG_UART_PHYS + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm +#endif + + .macro senduart,rd,rx + strb \rd, [\rx, #UA0_EMI_REC] + .endm + + .macro waituart,rd,rx + .endm + + .macro busyuart,rd,rx +1001: ldrb \rd, [\rx, #UA0_STATUS] + tst \rd, #UA0_STATUS_TX_READY + beq 1001b + .endm -- 2.1.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: baruch@tkos.co.il (Baruch Siach) Date: Thu, 8 Jan 2015 21:39:58 +0200 Subject: [PATCH v2 2/8] ARM: digicolor: add low level debug support In-Reply-To: References: Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Baruch Siach --- arch/arm/Kconfig.debug | 12 ++++++++++-- arch/arm/include/debug/digicolor.S | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+), 2 deletions(-) create mode 100644 arch/arm/include/debug/digicolor.S diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 5ddd4906f7a7..7ccab0629dd2 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -241,6 +241,13 @@ choice Say Y here if you want the debug print routines to direct their output to the serial port in the DC21285 (Footbridge). + config DEBUG_DIGICOLOR_UA0 + bool "Kernel low-level debugging messages via Digicolor UA0" + depends on ARCH_DIGICOLOR + help + Say Y here if you want the debug print routines to direct + their output to the UA0 serial port in the CX92755. + config DEBUG_FOOTBRIDGE_COM1 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" depends on FOOTBRIDGE @@ -1204,6 +1211,7 @@ config DEBUG_LL_INCLUDE default "debug/vt8500.S" if DEBUG_VT8500_UART0 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 default "debug/bcm63xx.S" if DEBUG_UART_BCM63XX + default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0 default "mach/debug-macro.S" # Compatibility options for PL01x @@ -1320,7 +1328,7 @@ config DEBUG_UART_PHYS DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \ DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \ DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \ - DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART + DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || DEBUG_DIGICOLOR_UA0 config DEBUG_UART_VIRT hex "Virtual base address of debug UART" @@ -1398,7 +1406,7 @@ config DEBUG_UART_VIRT depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \ DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \ - DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART + DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || DEBUG_DIGICOLOR_UA0 config DEBUG_UART_8250_SHIFT int "Register offset shift for the 8250 debug UART" diff --git a/arch/arm/include/debug/digicolor.S b/arch/arm/include/debug/digicolor.S new file mode 100644 index 000000000000..c9517150766a --- /dev/null +++ b/arch/arm/include/debug/digicolor.S @@ -0,0 +1,35 @@ +/* + * Debugging macro include header for Conexant Digicolor USART + * + * Copyright (C) 2014 Paradox Innovation Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * +*/ + +#define UA0_STATUS 0x0742 +#define UA0_EMI_REC 0x0744 + +#define UA0_STATUS_TX_READY 0x40 + +#ifdef CONFIG_DEBUG_UART_PHYS + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm +#endif + + .macro senduart,rd,rx + strb \rd, [\rx, #UA0_EMI_REC] + .endm + + .macro waituart,rd,rx + .endm + + .macro busyuart,rd,rx +1001: ldrb \rd, [\rx, #UA0_STATUS] + tst \rd, #UA0_STATUS_TX_READY + beq 1001b + .endm -- 2.1.4