[PATCH] ARM: bcm: Add DEBUG_LL console support

All of lore.kernel.org
 help / color / mirror / Atom feed

From: csd@broadcom.com (Christian Daudt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: bcm: Add DEBUG_LL console support
Date: Tue, 17 Sep 2013 14:59:47 -0700	[thread overview]
Message-ID: <1379455187-5812-1-git-send-email-csd@broadcom.com> (raw)

This patch adds low level debug uart support to Broadcom
 mobile based SOCs.

Signed-off-by: Christian Daudt <csd@broadcom.com>
Reviewed-by: James King <jamesk@broadcom.com>

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

WARNING: multiple messages have this Message-ID (diff)

From: "Christian Daudt" <csd@broadcom.com>
To: "Russell King" <linux@arm.linux.org.uk>,
	"Olof Johansson" <olof@lixom.net>,
	"Stephen Warren" <swarren@nvidia.com>
Cc: "Christian Daudt" <csd@broadcom.com>,
	linux-arm-kernel@lists.infradead.org,
	"Chris Ball" <cjb@laptop.org>,
	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	[thread overview]
Message-ID: <1379455187-5812-1-git-send-email-csd@broadcom.com> (raw)

This patch adds low level debug uart support to Broadcom
 mobile based SOCs.

Signed-off-by: Christian Daudt <csd@broadcom.com>
Reviewed-by: James King <jamesk@broadcom.com>

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

next             reply	other threads:[~2013-09-17 21:59 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-17 21:59 Christian Daudt [this message]
2013-09-17 21:59 ` [PATCH] ARM: bcm: Add DEBUG_LL console support Christian Daudt
2013-09-17 22:03 ` Russell King - ARM Linux
2013-09-17 22:03   ` Russell King - ARM Linux
2013-09-17 22:04   ` Christian Daudt
2013-09-17 22:04     ` Christian Daudt

find likely ancestor, descendant, or conflicting patches for this message:
( dfblob:583f4a0 dfblob:a69d62a dfblob:65edf6d dfblob:ace92e4
dfblob:5e22032 dfblob:583f4a0 dfblob:a69d62a dfblob:65edf6d
dfblob:ace92e4 dfblob:5e22032 )
 OR (
bs:"[PATCH] ARM: bcm: Add DEBUG_LL console support" )
	(help)

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1379455187-5812-1-git-send-email-csd@broadcom.com \
    --to=csd@broadcom.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Be sure your reply has a Subject: header at the top and a blank line before the message body.

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.