From patchwork Tue Oct 28 19:01:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 5179161 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B1305C11AC for ; Tue, 28 Oct 2014 19:04:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BE8AE20149 for ; Tue, 28 Oct 2014 19:04:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C4464200E0 for ; Tue, 28 Oct 2014 19:04:05 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XjC29-00013q-2G; Tue, 28 Oct 2014 19:02:21 +0000 Received: from mout.gmx.net ([212.227.17.22]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XjC1l-0000sC-8v for linux-arm-kernel@lists.infradead.org; Tue, 28 Oct 2014 19:01:58 +0000 Received: from zwerg.lan ([80.136.209.245]) by mail.gmx.com (mrgmx101) with ESMTPSA (Nemesis) id 0Mhdex-1XV7Y33nRT-00Ms9H; Tue, 28 Oct 2014 20:01:21 +0100 From: Oleksij Rempel To: linux-arm-kernel@lists.infradead.org, tglx@linutronix.de, mturquette@linaro.org, jason@lakedaemon.net, mark.rutland@arm.com, robherring2@gmail.com, daniel.lezcano@linaro.org, sergei.shtylyov@cogentembedded.com Subject: [PATCH v3 2/2] ARM: add lolevel debug support for asm9260 Date: Tue, 28 Oct 2014 20:01:06 +0100 Message-Id: <1414522866-12544-3-git-send-email-linux@rempel-privat.de> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1414522866-12544-1-git-send-email-linux@rempel-privat.de> References: <1414522866-12544-1-git-send-email-linux@rempel-privat.de> X-Provags-ID: V03:K0:ZXlEpe3kRBz207Pwkk+ny/UcW33OvtKTpwRcF1r3OnkAAWRjKTY c9V3qFKp8m/M+VSbM+SI36g+SlPdo+zKnhmh9PxBr3uRE2ut92DfQQwKIH2hfuuxLmEP3F2 z5dXOrPdVdcOpI/VXNkaIscWvRPWtcM2bw4o4JLsPL1SAm/Em8FH3oxmBNE/O0LOWdgbeiR 9/7H7YNtr3Sw48F9AzXSQ== X-UI-Out-Filterresults: notjunk:1; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141028_120157_691153_F01DB0CC X-CRM114-Status: GOOD ( 13.86 ) X-Spam-Score: -0.0 (/) Cc: Oleksij Rempel X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since there is no public documentation, this patch also provide register offsets for different UART units on this SoC. Signed-off-by: Oleksij Rempel --- arch/arm/Kconfig.debug | 31 ++++++++++++++++++++++++++++--- arch/arm/include/debug/asm9260.S | 31 +++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+), 3 deletions(-) create mode 100644 arch/arm/include/debug/asm9260.S diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index d8f6a2e..66c29db 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -93,6 +93,27 @@ choice prompt "Kernel low-level debugging port" depends on DEBUG_LL + config DEBUG_ASM9260_UART + bool "Kernel low-level debugging via asm9260 UART" + depends on MACH_ASM9260 + help + Say Y here if you want the debug print routines to direct + their output to an UART or USART port on asm9260 based + machines. + + DEBUG_UART_PHYS | DEBUG_UART_VIRT + + 0x80000000 | 0xf0000000 | UART0 + 0x80004000 | 0xf0004000 | UART1 + 0x80008000 | 0xf0008000 | UART2 + 0x8000c000 | 0xf000c000 | UART3 + 0x80010000 | 0xf0010000 | UART4 + 0x80014000 | 0xf0014000 | UART5 + 0x80018000 | 0xf0018000 | UART6 + 0x8001c000 | 0xf001c000 | UART7 + 0x80020000 | 0xf0020000 | UART8 + 0x80024000 | 0xf0024000 | UART9 + config AT91_DEBUG_LL_DBGU0 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl" depends on HAVE_AT91_DBGU0 @@ -1042,6 +1063,7 @@ config DEBUG_STI_UART config DEBUG_LL_INCLUDE string default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250 + default "debug/asm9260.S" if DEBUG_ASM9260_UART default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2 default "debug/meson.S" if DEBUG_MESON_UARTAO default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X @@ -1135,6 +1157,7 @@ config DEBUG_UART_PHYS default 0x78000000 if DEBUG_CNS3XXX default 0x7c0003f8 if FOOTBRIDGE default 0x78000000 if DEBUG_CNS3XXX + default 0x80010000 if DEBUG_ASM9260_UART default 0x80070000 if DEBUG_IMX23_UART default 0x80074000 if DEBUG_IMX28_UART default 0x80230000 if DEBUG_PICOXCELL_UART @@ -1171,13 +1194,14 @@ config DEBUG_UART_PHYS DEBUG_LL_UART_EFM32 || \ DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \ DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \ - DEBUG_UART_BCM63XX + DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART config DEBUG_UART_VIRT hex "Virtual base address of debug UART" default 0xe0010fe0 if ARCH_RPC default 0xe1000000 if DEBUG_MSM_UART default 0xf0000be0 if ARCH_EBSA110 + default 0xf0010000 if DEBUG_ASM9260_UART default 0xf01fb000 if DEBUG_NOMADIK_UART default 0xf0201000 if DEBUG_BCM2835 default 0xf1000300 if DEBUG_BCM_5301X @@ -1244,7 +1268,7 @@ 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_UART_BCM63XX || DEBUG_ASM9260_UART config DEBUG_UART_8250_SHIFT int "Register offset shift for the 8250 debug UART" @@ -1286,7 +1310,8 @@ config DEBUG_UNCOMPRESS config UNCOMPRESS_INCLUDE string default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \ - PLAT_SAMSUNG || ARCH_EFM32 + PLAT_SAMSUNG || ARCH_EFM32 || \ + MACH_ASM9260 default "mach/uncompress.h" config EARLY_PRINTK diff --git a/arch/arm/include/debug/asm9260.S b/arch/arm/include/debug/asm9260.S new file mode 100644 index 0000000..c70d51f --- /dev/null +++ b/arch/arm/include/debug/asm9260.S @@ -0,0 +1,31 @@ +/* arch/arm/mach-imx/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * Modified for ASM9260 by Oleksij Remepl + * + * 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. + * + */ + + .macro addruart, rp, rv, tmp + ldr \rp, = CONFIG_DEBUG_UART_PHYS + ldr \rv, = CONFIG_DEBUG_UART_VIRT + .endm + + .macro waituart,rd,rx + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x50] @ TXDATA + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x60] @ STAT + tst \rd, #1 << 27 @ TXEMPTY + beq 1002b @ wait until transmit done + .endm