Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754046Ab3IQWAK (ORCPT ); Tue, 17 Sep 2013 18:00:10 -0400 Received: from mms1.broadcom.com ([216.31.210.17]:2517 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753147Ab3IQWAI (ORCPT ); Tue, 17 Sep 2013 18:00:08 -0400 X-Server-Uuid: 06151B78-6688-425E-9DE2-57CB27892261 From: "Christian Daudt" To: "Russell King" , "Olof Johansson" , "Stephen Warren" cc: "Christian Daudt" , linux-arm-kernel@lists.infradead.org, "Chris Ball" , linux-kernel@vger.kernel.org, bcm@fixthebug.org Subject: [PATCH] ARM: bcm: Add DEBUG_LL console support Date: Tue, 17 Sep 2013 14:59:47 -0700 Message-ID: <1379455187-5812-1-git-send-email-csd@broadcom.com> X-Mailer: git-send-email 1.7.10.4 MIME-Version: 1.0 X-WSS-ID: 7E2610660UO8260549-01-01 Content-Type: text/plain Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2650 Lines: 83 This patch adds low level debug uart support to Broadcom mobile based SOCs. Signed-off-by: Christian Daudt Reviewed-by: James King diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 583f4a0..a69d62a 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -93,6 +93,16 @@ choice bool "Kernel low-level debugging on BCM2835 PL011 UART" depends on ARCH_BCM2835 + config DEBUG_BCM_KONA_UART + bool "Kernel low-level debugging messages via BCM KONA UART" + depends on ARCH_BCM + help + Say Y here if you want kernel low-level debugging support + on Broadcom SoC platforms. + This low level debug works for Broadcom + mobile SoCs in the Kona family of chips (e.g. bcm28155, + bcm11351, etc...) + config DEBUG_CLPS711X_UART1 bool "Kernel low-level debugging messages via UART1" depends on ARCH_CLPS711X @@ -761,6 +771,7 @@ endchoice config DEBUG_LL_INCLUDE string + default "debug/bcm_kona.S" if DEBUG_BCM_KONA_UART default "debug/bcm2835.S" if DEBUG_BCM2835 default "debug/cns3xxx.S" if DEBUG_CNS3XXX default "debug/exynos.S" if DEBUG_EXYNOS_UART diff --git a/arch/arm/configs/bcm_defconfig b/arch/arm/configs/bcm_defconfig index 65edf6d..ace92e4 100644 --- a/arch/arm/configs/bcm_defconfig +++ b/arch/arm/configs/bcm_defconfig @@ -30,6 +30,8 @@ CONFIG_ARCH_BCM=y CONFIG_ARM_THUMBEE=y CONFIG_ARM_ERRATA_743622=y CONFIG_PREEMPT=y +CONFIG_DEBUG_LL=y +CONFIG_DEBUG_BCM_KONA_UART=y CONFIG_AEABI=y # CONFIG_OABI_COMPAT is not set # CONFIG_COMPACTION is not set diff --git a/arch/arm/include/debug/bcm_kona.S b/arch/arm/include/debug/bcm_kona.S new file mode 100644 index 0000000..5e22032 --- /dev/null +++ b/arch/arm/include/debug/bcm_kona.S @@ -0,0 +1,20 @@ +/* + * 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. + * + * Modified by Broadcom for Kona chipsets + */ +#define UARTB_PHYS_BASE 0x3e000000 +#define UART_SHIFT 2 + + .macro addruart, rp, rv, tmp + mov \rp, #UARTB_PHYS_BASE @ physical base address of UART + mov \rv, #0x0e300000 @ virtual base address of UART + orr \rv, \rv, #0xf0000000 + .endm + +#include "8250_32.S" -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/