mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Cc: Rob Herring <rob.herring@calxeda.com>
Subject: [PATCH 5/6] highbank: add l2x0 support
Date: Wed, 13 Feb 2013 11:06:43 +0100	[thread overview]
Message-ID: <1360750004-17713-5-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1360750004-17713-1-git-send-email-plagnioj@jcrosoft.com>

not enable as on qemu this generate a undefined instruction exception

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 arch/arm/Kconfig                    |    1 +
 arch/arm/mach-highbank/Makefile     |    1 +
 arch/arm/mach-highbank/cache-l2x0.c |   45 +++++++++++++++++++++++++++++++++++
 arch/arm/mach-highbank/core.h       |    2 ++
 arch/arm/mach-highbank/smc.S        |   27 +++++++++++++++++++++
 5 files changed, 76 insertions(+)
 create mode 100644 arch/arm/mach-highbank/cache-l2x0.c
 create mode 100644 arch/arm/mach-highbank/core.h
 create mode 100644 arch/arm/mach-highbank/smc.S

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 447f4c9..f002910 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -49,6 +49,7 @@ config ARCH_EP93XX
 config ARCH_HIGHBANK
 	bool "Calxeda Highbank"
 	select HAS_DEBUG_LL
+	select ARCH_HAS_L2X0
 	select CPU_V7
 	select ARM_AMBA
 	select AMBA_SP804
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile
index 3f01cbb..6a7330f 100644
--- a/arch/arm/mach-highbank/Makefile
+++ b/arch/arm/mach-highbank/Makefile
@@ -1,3 +1,4 @@
 obj-y += core.o
 obj-y += devices.o
 obj-y += reset.o
+obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o smc.o
diff --git a/arch/arm/mach-highbank/cache-l2x0.c b/arch/arm/mach-highbank/cache-l2x0.c
new file mode 100644
index 0000000..f1e39dc
--- /dev/null
+++ b/arch/arm/mach-highbank/cache-l2x0.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+
+#include <asm/mmu.h>
+#include <asm/cache-l2x0.h>
+
+#include "core.h"
+
+static void highbank_l2x0_disable(void)
+{
+	/* Disable PL310 L2 Cache controller */
+	highbank_smc1(0x102, 0x0);
+}
+
+static int highbank_l2x0_init(void)
+{
+	/* Enable PL310 L2 Cache controller */
+	highbank_smc1(0x102, 0x1);
+	l2x0_init(IOMEM(0xfff12000), 0, ~0UL);
+	outer_cache.disable = highbank_l2x0_disable;
+
+	return 0;
+}
+postmmu_initcall(highbank_l2x0_init);
diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h
new file mode 100644
index 0000000..e3f19b2
--- /dev/null
+++ b/arch/arm/mach-highbank/core.h
@@ -0,0 +1,2 @@
+
+extern void highbank_smc1(int fn, int arg);
diff --git a/arch/arm/mach-highbank/smc.S b/arch/arm/mach-highbank/smc.S
new file mode 100644
index 0000000..b2118b4
--- /dev/null
+++ b/arch/arm/mach-highbank/smc.S
@@ -0,0 +1,27 @@
+/*
+ * Copied from omap44xx-smc.S Copyright (C) 2010 Texas Instruments, Inc.
+ * Copyright 2012 Calxeda, Inc.
+ *
+ * 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 <linux/linkage.h>
+
+/*
+ * This is common routine to manage secure monitor API
+ * used to modify the PL310 secure registers.
+ * 'r0' contains the value to be modified and 'r12' contains
+ * the monitor API number.
+ * Function signature : void highbank_smc1(u32 fn, u32 arg)
+ */
+
+ENTRY(highbank_smc1)
+	stmfd	sp!, {r4-r11, lr}
+	mov	r12, r0
+	mov	r0, r1
+	dsb
+	smc	#0
+	ldmfd	sp!, {r4-r11, pc}
+ENDPROC(highbank_smc1)
-- 
1.7.10.4


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

  parent reply	other threads:[~2013-02-13 10:08 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-13 10:02 [PATCH 0/6 v3] arm: add Calxeda Highbank support Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 10:06 ` [PATCH 1/6] ahci-generic: add oftree support Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 10:06   ` [PATCH 2/6] of: make of_add_memory available for other board Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 17:31     ` Sascha Hauer
2013-02-13 17:59       ` Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 18:09       ` [PATCH 1/1] of_add_memory: check the device_type is memory Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 10:06   ` [PATCH 3/6] highbank: add xgmac support Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 10:06   ` [PATCH 4/6] arm: add highbank support Jean-Christophe PLAGNIOL-VILLARD
2013-02-13 10:06   ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-02-13 10:06   ` [PATCH 6/6] highbank: use the provided dtb by the firmware to probe barebox device and mem size Jean-Christophe PLAGNIOL-VILLARD
2013-02-14 13:47 ` [PATCH 0/6 v3] arm: add Calxeda Highbank support Sascha Hauer

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=1360750004-17713-5-git-send-email-plagnioj@jcrosoft.com \
    --to=plagnioj@jcrosoft.com \
    --cc=barebox@lists.infradead.org \
    --cc=rob.herring@calxeda.com \
    /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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox