[PATCH v9 06/12] MIPS: add Malta machine support to barebox
Antony Pavlov
antonynpavlov at gmail.com
Wed Aug 3 05:10:55 EDT 2011
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 at gmail.com>
---
arch/mips/Kconfig | 22 ++++++++++++++
arch/mips/Makefile | 2 +
arch/mips/mach-malta/Kconfig | 12 ++++++++
arch/mips/mach-malta/Makefile | 1 +
arch/mips/mach-malta/include/mach/debug_ll.h | 40 ++++++++++++++++++++++++++
arch/mips/mach-malta/include/mach/hardware.h | 32 ++++++++++++++++++++
arch/mips/mach-malta/reset.c | 36 +++++++++++++++++++++++
7 files changed, 145 insertions(+), 0 deletions(-)
create mode 100644 arch/mips/mach-malta/Kconfig
create mode 100644 arch/mips/mach-malta/Makefile
create mode 100644 arch/mips/mach-malta/include/mach/debug_ll.h
create mode 100644 arch/mips/mach-malta/include/mach/hardware.h
create mode 100644 arch/mips/mach-malta/reset.c
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b6d2c5e..a84d469 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -21,6 +21,28 @@ config GENERIC_LINKER_SCRIPT
bool
default y
+menu "Machine selection"
+
+choice
+ prompt "System type"
+ default MACH_MIPS_MALTA
+
+config MACH_MIPS_MALTA
+ bool "MIPS Malta"
+ select CSRC_R4K_LIB
+ select DRIVER_SERIAL_NS16550
+ select SYS_HAS_CPU_MIPS32_R1
+ select SYS_HAS_CPU_MIPS32_R2
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select HAS_DEBUG_LL
+
+endchoice
+
+source arch/mips/mach-malta/Kconfig
+
+endmenu
+
#
# Endianess selection. Sufficiently obscure so many users don't know what to
# answer,so we try hard to limit the available choices. Also the use of a
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 4cb5498..678c2b5 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -60,6 +60,8 @@ endif
LDFLAGS_barebox += -nostdlib
+machine-$(CONFIG_MACH_MIPS_MALTA) := malta
+
machdirs := $(patsubst %,arch/mips/mach-%/,$(machine-y))
ifeq ($(KBUILD_SRC),)
diff --git a/arch/mips/mach-malta/Kconfig b/arch/mips/mach-malta/Kconfig
new file mode 100644
index 0000000..6076a13
--- /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 0000000..f3cc668
--- /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 0000000..32d13c1
--- /dev/null
+++ b/arch/mips/mach-malta/include/mach/debug_ll.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov at 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 0000000..f827cc3
--- /dev/null
+++ b/arch/mips/mach-malta/include/mach/hardware.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov at 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 0000000..2818e7c
--- /dev/null
+++ b/arch/mips/mach-malta/reset.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2011 Antony Pavlov <antonynpavlov at 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);
--
1.7.5.4
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