MIPS: add Malta machine support to barebox

The machine uses only big-endian mode.
Only supported peripheral is serial port.
The machine supports only MIPS32 CPUs.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

5 files changed, 121 insertions, 0 deletions

diff --git a/arch/mips/mach-malta/Kconfig b/arch/mips/mach-malta/Kconfig
new file mode 100644
index 0000000000..6076a13a76
--- /dev/null
+++ b/arch/mips/mach-malta/Kconfig
@@ -0,0 +1,12 @@
+if MACH_MIPS_MALTA
+
+config ARCH_TEXT_BASE
+	hex
+	default 0xa0800000
+
+choice
+	prompt "Board type"
+
+endchoice
+
+endif
diff --git a/arch/mips/mach-malta/Makefile b/arch/mips/mach-malta/Makefile
new file mode 100644
index 0000000000..f3cc6684b8
--- /dev/null
+++ b/arch/mips/mach-malta/Makefile
@@ -0,0 +1 @@
+obj-y += reset.o
diff --git a/arch/mips/mach-malta/include/mach/debug_ll.h b/arch/mips/mach-malta/include/mach/debug_ll.h
new file mode 100644
index 0000000000..32d13c1a87
--- /dev/null
+++ b/arch/mips/mach-malta/include/mach/debug_ll.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * 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.
+ *
+ * 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
+ *  This File contains declaration for early output support
+ */
+#ifndef __INCLUDE_ARCH_DEBUG_LL_H__
+#define   __INCLUDE_ARCH_DEBUG_LL_H__
+
+#include <asm/io.h>
+#include <mach/hardware.h>
+
+#define rbr		0
+#define lsr		5
+#define LSR_THRE	0x20	/* Xmit holding register empty */
+
+static __inline__ void putc(char ch)
+{
+	while (!(__raw_readb(DEBUG_LL_UART_ADDR + lsr) & LSR_THRE));
+	__raw_writeb(ch, DEBUG_LL_UART_ADDR + rbr);
+}
+
+#endif  /* __INCLUDE_ARCH_DEBUG_LL_H__ */
diff --git a/arch/mips/mach-malta/include/mach/hardware.h b/arch/mips/mach-malta/include/mach/hardware.h
new file mode 100644
index 0000000000..f827cc3557
--- /dev/null
+++ b/arch/mips/mach-malta/include/mach/hardware.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * 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.
+ *
+ * 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
+ */
+
+#ifndef __INCLUDE_ARCH_HARDWARE_H__
+#define   __INCLUDE_ARCH_HARDWARE_H__
+
+#define DEBUG_LL_UART_ADDR	0xb00003f8
+
+/*
+ * Reset register.
+ */
+#define SOFTRES_REG	0xbf000500
+#define GORESET		0x42
+
+#endif  /* __INCLUDE_ARCH_HARDWARE_H__ */
diff --git a/arch/mips/mach-malta/reset.c b/arch/mips/mach-malta/reset.c
new file mode 100644
index 0000000000..2818e7cfa3
--- /dev/null
+++ b/arch/mips/mach-malta/reset.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * 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.
+ *
+ * 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 malta board
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <mach/hardware.h>
+
+void __noreturn reset_cpu(ulong addr)
+{
+	__raw_writel(GORESET, (char *)SOFTRES_REG);
+	while (1);
+	/*NOTREACHED*/
+}
+EXPORT_SYMBOL(reset_cpu);