From: Juergen Beisert <jbe@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCHv2 05/14] Bring in the first x86 specific code
Date: Tue, 12 Jan 2010 11:15:39 +0100 [thread overview]
Message-ID: <20100112102054.503300176@pengutronix.de> (raw)
In-Reply-To: <20100112101534.868276907@pengutronix.de>
[-- Attachment #1: add_mach_code.diff --]
[-- Type: text/plain, Size: 4326 bytes --]
Add some generic required code to make barebox work on x86.
Note: Resetting the CPU is unfinished yet. I need some ideas how to reset
this kind of architecture gracefully.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
---
arch/x86/mach-i386/Kconfig | 29 +++++++++++++++++++++++++++++
arch/x86/mach-i386/Makefile | 2 ++
arch/x86/mach-i386/generic.c | 38 ++++++++++++++++++++++++++++++++++++++
arch/x86/mach-i386/reset.c | 34 ++++++++++++++++++++++++++++++++++
4 files changed, 103 insertions(+)
Index: u-boot-2.0.0-rc10/arch/x86/mach-i386/Kconfig
===================================================================
--- /dev/null
+++ u-boot-2.0.0-rc10/arch/x86/mach-i386/Kconfig
@@ -0,0 +1,29 @@
+
+menu "Board specific settings "
+
+if X86_BOOTLOADER
+
+config X86_GENERIC_HAS_ISA
+ bool "ISA support"
+ help
+ Say Y here if the target supports a ISA bus
+
+config X86_GENERIC_HAS_PCI
+ bool "PCI support"
+ select HAS_PCI
+ help
+ Say Y here if the target supports a PCI bus
+
+config X86_GENERIC_HAS_VIDEO
+ bool "video support"
+ help
+ Say Y here if the target supports a video output
+
+config X86_GENERIC_HAS_USB
+ bool "USB support"
+ help
+ Say Y here if the target supports a USB interface
+
+endif
+
+endmenu
Index: u-boot-2.0.0-rc10/arch/x86/mach-i386/Makefile
===================================================================
--- /dev/null
+++ u-boot-2.0.0-rc10/arch/x86/mach-i386/Makefile
@@ -0,0 +1,2 @@
+obj-y += generic.o
+obj-y += reset.o
Index: u-boot-2.0.0-rc10/arch/x86/mach-i386/generic.c
===================================================================
--- /dev/null
+++ u-boot-2.0.0-rc10/arch/x86/mach-i386/generic.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2009 Juergen Beisert, Pengutronix
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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
+ *
+ */
+
+/**
+ * @file
+ * @brief x86 Architecture Initialization routines
+ */
+
+#include <asm/io.h>
+
+/** to work with the 8250 UART driver implementation we need this function */
+unsigned int x86_uart_read(unsigned long base, unsigned char reg_idx)
+{
+ return inb(base + reg_idx);
+}
+
+/** to work with the 8250 UART driver implementation we need this function */
+void x86_uart_write(unsigned int val, unsigned long base, unsigned char reg_idx)
+{
+ outb(val, base + reg_idx);
+}
Index: u-boot-2.0.0-rc10/arch/x86/mach-i386/reset.c
===================================================================
--- /dev/null
+++ u-boot-2.0.0-rc10/arch/x86/mach-i386/reset.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2009 Juergen Beisert, Pengutronix
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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
+ *
+ */
+
+/**
+ * @file
+ * @brief Resetting an x86 CPU
+ */
+
+#include <common.h>
+
+void reset_cpu(ulong addr)
+{
+ /** How to reset the machine? */
+ while(1)
+ ;
+}
+EXPORT_SYMBOL(reset_cpu);
--
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next prev parent reply other threads:[~2010-01-12 10:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-12 10:15 [PATCHv2 00/14] Bring in basic x86 support into 'barebox' Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 01/14] Add a tool to activate barebox as a boot loader on x86 architectures Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 02/14] Consider real and protected mode in the dump file Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 03/14] Adding x86 usage documentation to the tree Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 04/14] Adding required architecture header files Juergen Beisert
2010-01-12 10:15 ` Juergen Beisert [this message]
2010-01-12 10:15 ` [PATCHv2 06/14] Add some generic functions to make x86 work Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 07/14] Add functions to be able to boot with BIOSs help Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 08/14] Add a generic PC platform Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 09/14] Bring in the time reference for the x86 platforms Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 10/14] Start to add ATA support to barebox Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 11/14] Add the main disk driver Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 12/14] Add a low level disk drive access driver Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 13/14] Add a special command to load and start a bzImage on x86 Juergen Beisert
2010-01-12 10:15 ` [PATCHv2 14/14] Add the whole x86 architecture to the build system Juergen Beisert
2010-01-14 9:29 ` [PATCHv2 00/14] Bring in basic x86 support into 'barebox' Sascha Hauer
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