From patchwork Fri Oct 24 10:54:32 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Thompson X-Patchwork-Id: 39432 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-wi0-f200.google.com (mail-wi0-f200.google.com [209.85.212.200]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id EB06924026 for ; Fri, 24 Oct 2014 11:00:21 +0000 (UTC) Received: by mail-wi0-f200.google.com with SMTP id bs8sf517833wib.11 for ; Fri, 24 Oct 2014 04:00:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:in-reply-to:references:x-original-sender :x-original-authentication-results:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-unsubscribe; bh=30SQwHXORLjmXv0gLd3g3jqJ0n5BPnynDe8isxtAzhk=; b=d87KrAX9RGgFlJOdg2IXDvdhEERGgZX0BF68XWsgXjSLs0Skj0v9lJD3NDPzAKlvlm fAk5wXneEcd7vd6CXNlJcoJvnLWW7qqpx1xMYpyGK6PdfZDAkbtHmsxDFo/jv73fX4lD zBKbeyz1YPLG8etIdFFiol1gAKaM9taTdRIHbHk24XcYCGW1uyDw9PIMHL7EextsWQdp 3dVsngufZ7jwucdzpwC2w7scloPN5RsyYj5FVVCRe9Rq3SeDF99AD/GShqaIm3GLOv50 zpxDR767RJh0yCCZklh0MSiZGClpchuKbarCsNGbB+0vMAdHCWLiuDbLGZQrKvgGtWw7 iaUw== X-Gm-Message-State: ALoCoQmyUMfU1ClZGcPeWyqfF2zeYQ2Pt/vOUCQGMgE9ZhsMh5ak3OeOLqiVJvnb4P0KeuKBIETr X-Received: by 10.194.239.197 with SMTP id vu5mr2277039wjc.0.1414148421126; Fri, 24 Oct 2014 04:00:21 -0700 (PDT) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.152.43.200 with SMTP id y8ls426853lal.93.gmail; Fri, 24 Oct 2014 04:00:20 -0700 (PDT) X-Received: by 10.152.7.7 with SMTP id f7mr3525101laa.57.1414148420807; Fri, 24 Oct 2014 04:00:20 -0700 (PDT) Received: from mail-lb0-f179.google.com (mail-lb0-f179.google.com. [209.85.217.179]) by mx.google.com with ESMTPS id uc5si6449993lbb.31.2014.10.24.04.00.20 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 24 Oct 2014 04:00:20 -0700 (PDT) Received-SPF: pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.179 as permitted sender) client-ip=209.85.217.179; Received: by mail-lb0-f179.google.com with SMTP id l4so2354306lbv.10 for ; Fri, 24 Oct 2014 04:00:20 -0700 (PDT) X-Received: by 10.152.5.38 with SMTP id p6mr3651706lap.44.1414148420580; Fri, 24 Oct 2014 04:00:20 -0700 (PDT) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patches@linaro.org Received: by 10.112.84.229 with SMTP id c5csp405847lbz; Fri, 24 Oct 2014 04:00:20 -0700 (PDT) X-Received: by 10.180.74.198 with SMTP id w6mr3249435wiv.47.1414148419913; Fri, 24 Oct 2014 04:00:19 -0700 (PDT) Received: from mail-wi0-f177.google.com (mail-wi0-f177.google.com. [209.85.212.177]) by mx.google.com with ESMTPS id uk10si4876772wjc.87.2014.10.24.04.00.19 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 24 Oct 2014 04:00:19 -0700 (PDT) Received-SPF: pass (google.com: domain of daniel.thompson@linaro.org designates 209.85.212.177 as permitted sender) client-ip=209.85.212.177; Received: by mail-wi0-f177.google.com with SMTP id ex7so906990wid.4 for ; Fri, 24 Oct 2014 04:00:19 -0700 (PDT) X-Received: by 10.194.92.244 with SMTP id cp20mr2578850wjb.79.1414148419550; Fri, 24 Oct 2014 04:00:19 -0700 (PDT) Received: from sundance.lan (cpc4-aztw19-0-0-cust157.18-1.cable.virginm.net. [82.33.25.158]) by mx.google.com with ESMTPSA id f7sm1601214wiz.13.2014.10.24.04.00.17 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Oct 2014 04:00:18 -0700 (PDT) From: Daniel Thompson To: Russell King Cc: Daniel Thompson , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, spear-devel@list.st.com, Arnd Bergmann , Paul Bolle , Srinivas Kandagatla , patches@linaro.org, linaro-kernel@lists.linaro.org, Tony Lindgren , Arnd Bergmann , linux-omap@vger.kernel.org Subject: [PATCH v12 11/15] arm: omap1: Migrate debug_ll macros to use 8250.S Date: Fri, 24 Oct 2014 11:54:32 +0100 Message-Id: <1414148076-12685-12-git-send-email-daniel.thompson@linaro.org> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1414148076-12685-1-git-send-email-daniel.thompson@linaro.org> References: <1414148076-12685-1-git-send-email-daniel.thompson@linaro.org> X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: daniel.thompson@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.179 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Precedence: list Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org List-ID: X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , The omap1's debug-macro.S is similar to the generic 8250 code. Compared to the 8520 code the omap1 macro automatically determines what UART to use based on breadcrumbs left by the bootloader and automatically copes with the eccentric register layout on OMAP7XX. This patch drops both these features and relies instead on the generic 8250 macros: 1. Dropping support for the bootloader breadcrumbs is identical to the way the migration was handled for OMAP2 (see 808b7e07464d...). 2. Support for OMAP7XX still exists but it must be configured by hand (DEBUG_OMAP7XXUART1/2/3) rather than handled at runtime. Signed-off-by: Daniel Thompson Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Cc: Tony Lindgren Cc: Arnd Bergmann Cc: linux-omap@vger.kernel.org Tested-by: Aaro Koskinen --- arch/arm/Kconfig.debug | 57 +++++++++++++- arch/arm/mach-omap1/include/mach/debug-macro.S | 101 ------------------------- 2 files changed, 56 insertions(+), 102 deletions(-) delete mode 100644 arch/arm/mach-omap1/include/mach/debug-macro.S diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index c8f623c..889ba7a 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -495,6 +495,30 @@ choice Say Y here if you want kernel low-level debugging support on TI-NSPIRE CX models. + config DEBUG_OMAP1UART1 + bool "Kernel low-level debugging via OMAP1 UART1" + depends on ARCH_OMAP1 + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on OMAP1 based platforms (expect OMAP730) on the UART1. + + config DEBUG_OMAP1UART2 + bool "Kernel low-level debugging via OMAP1 UART2" + depends on ARCH_OMAP1 + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on OMAP1 based platforms (expect OMAP730) on the UART2. + + config DEBUG_OMAP1UART3 + bool "Kernel low-level debugging via OMAP1 UART3" + depends on ARCH_OMAP1 + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on OMAP1 based platforms (expect OMAP730) on the UART3. + config DEBUG_OMAP2UART1 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" depends on ARCH_OMAP2PLUS @@ -537,6 +561,30 @@ choice depends on ARCH_OMAP2PLUS select DEBUG_OMAP2PLUS_UART + config DEBUG_OMAP7XXUART1 + bool "Kernel low-level debugging via OMAP730 UART1" + depends on ARCH_OMAP730 + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on OMAP730 based platforms on the UART1. + + config DEBUG_OMAP7XXUART2 + bool "Kernel low-level debugging via OMAP730 UART2" + depends on ARCH_OMAP730 + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on OMAP730 based platforms on the UART2. + + config DEBUG_OMAP7XXUART3 + bool "Kernel low-level debugging via OMAP730 UART3" + depends on ARCH_OMAP730 + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on OMAP730 based platforms on the UART3. + config DEBUG_TI81XXUART1 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)" depends on ARCH_OMAP2PLUS @@ -1163,6 +1211,9 @@ config DEBUG_UART_PHYS default 0xffc02000 if DEBUG_SOCFPGA_UART default 0xffd82340 if ARCH_IOP13XX default 0xfff36000 if DEBUG_HIGHBANK_UART + default 0xfffb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1 + default 0xfffb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2 + default 0xfffb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3 default 0xfffe8600 if DEBUG_UART_BCM63XX default 0xfffff700 if ARCH_IOP33X depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ @@ -1236,6 +1287,9 @@ config DEBUG_UART_VIRT default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN default 0xfef36000 if DEBUG_HIGHBANK_UART + default 0xfefb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1 + default 0xfefb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2 + default 0xfefb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3 default 0xfefff700 if ARCH_IOP33X default 0xff003000 if DEBUG_U300_UART default DEBUG_UART_PHYS if !MMU @@ -1247,7 +1301,8 @@ config DEBUG_UART_VIRT config DEBUG_UART_8250_SHIFT int "Register offset shift for the 8250 debug UART" depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 - default 0 if FOOTBRIDGE || ARCH_IOP32X + default 0 if FOOTBRIDGE || ARCH_IOP32X || \ + DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || DEBUG_OMAP7XXUART3 default 2 config DEBUG_UART_8250_WORD diff --git a/arch/arm/mach-omap1/include/mach/debug-macro.S b/arch/arm/mach-omap1/include/mach/debug-macro.S deleted file mode 100644 index 5c1a26c..0000000 --- a/arch/arm/mach-omap1/include/mach/debug-macro.S +++ /dev/null @@ -1,101 +0,0 @@ -/* arch/arm/mach-omap1/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 - * - * 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. - * -*/ - -#include - -#include "serial.h" - - .pushsection .data -omap_uart_phys: .word 0x0 -omap_uart_virt: .word 0x0 - .popsection - - /* - * Note that this code won't work if the bootloader passes - * a wrong machine ID number in r1. To debug, just hardcode - * the desired UART phys and virt addresses temporarily into - * the omap_uart_phys and omap_uart_virt above. - */ - .macro addruart, rp, rv, tmp - - /* Use omap_uart_phys/virt if already configured */ -9: adr \rp, 99f @ get effective addr of 99f - ldr \rv, [\rp] @ get absolute addr of 99f - sub \rv, \rv, \rp @ offset between the two - ldr \rp, [\rp, #4] @ abs addr of omap_uart_phys - sub \tmp, \rp, \rv @ make it effective - ldr \rp, [\tmp, #0] @ omap_uart_phys - ldr \rv, [\tmp, #4] @ omap_uart_virt - cmp \rp, #0 @ is port configured? - cmpne \rv, #0 - bne 100f @ already configured - - /* Check the debug UART configuration set in uncompress.h */ - and \rp, pc, #0xff000000 - ldr \rv, =OMAP_UART_INFO_OFS - ldr \rp, [\rp, \rv] - - /* Select the UART to use based on the UART1 scratchpad value */ -10: cmp \rp, #0 @ no port configured? - beq 11f @ if none, try to use UART1 - cmp \rp, #OMAP1UART1 - beq 11f @ configure OMAP1UART1 - cmp \rp, #OMAP1UART2 - beq 12f @ configure OMAP1UART2 - cmp \rp, #OMAP1UART3 - beq 13f @ configure OMAP2UART3 - - /* Configure the UART offset from the phys/virt base */ -11: mov \rp, #0x00fb0000 @ OMAP1UART1 - b 98f -12: mov \rp, #0x00fb0000 @ OMAP1UART1 - orr \rp, \rp, #0x00000800 @ OMAP1UART2 - b 98f -13: mov \rp, #0x00fb0000 @ OMAP1UART1 - orr \rp, \rp, #0x00000800 @ OMAP1UART2 - orr \rp, \rp, #0x00009000 @ OMAP1UART3 - - /* Store both phys and virt address for the uart */ -98: add \rp, \rp, #0xff000000 @ phys base - str \rp, [\tmp, #0] @ omap_uart_phys - sub \rp, \rp, #0xff000000 @ phys base - add \rp, \rp, #0xfe000000 @ virt base - str \rp, [\tmp, #4] @ omap_uart_virt - b 9b - - .align -99: .word . - .word omap_uart_phys - .ltorg - -100: - .endm - - .macro senduart,rd,rx - strb \rd, [\rx] - .endm - - .macro busyuart,rd,rx -1001: ldrb \rd, [\rx, #(UART_LSR << OMAP_PORT_SHIFT)] - and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE) - teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE) - beq 1002f - ldrb \rd, [\rx, #(UART_LSR << OMAP7XX_PORT_SHIFT)] - and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE) - teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE) - bne 1001b -1002: - .endm - - .macro waituart,rd,rx - .endm