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@xxxxxxxxxxxxxx>
---
arch/x86/mach-i386/Kconfig | 4 ++++
arch/x86/mach-i386/Makefile | 2 ++
arch/x86/mach-i386/generic.c | 38 ++++++++++++++++++++++++++++++++++++++
arch/x86/mach-i386/reset.c | 34 ++++++++++++++++++++++++++++++++++
4 files changed, 78 insertions(+)
Index: u-boot-v2/arch/x86/mach-i386/Kconfig
===================================================================
--- /dev/null
+++ u-boot-v2/arch/x86/mach-i386/Kconfig
@@ -0,0 +1,4 @@
+
+menu "Board specific settings "
+
+endmenu
Index: u-boot-v2/arch/x86/mach-i386/Makefile
===================================================================
--- /dev/null
+++ u-boot-v2/arch/x86/mach-i386/Makefile
@@ -0,0 +1,2 @@
+obj-y += generic.o
+obj-y += reset.o
Index: u-boot-v2/arch/x86/mach-i386/generic.c
===================================================================
--- /dev/null
+++ u-boot-v2/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-v2/arch/x86/mach-i386/reset.c
===================================================================
--- /dev/null
+++ u-boot-v2/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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