mxc: Add support for the Babbage board (i.MX5)

Babbage is a reference board from Freescale for their i.MX51 SoC.

Add board definition, Kconfig and Makefiles to enable Freescale i.MX51
processor and Babbage board.

Boot tested on a Babbage2.5 board

Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index e9da08483b3cdb74bd687cf3601ec4dccf395c25..056daf8b68a5c45af7a5172186cd22bcd39684dd 100644 (file)
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -146,6 +146,7 @@ machine-$(CONFIG_ARCH_MX1)          := mx1
 machine-$(CONFIG_ARCH_MX2)             := mx2
 machine-$(CONFIG_ARCH_MX25)            := mx25
 machine-$(CONFIG_ARCH_MX3)             := mx3
+machine-$(CONFIG_ARCH_MX5)             := mx5
 machine-$(CONFIG_ARCH_NETX)            := netx
 machine-$(CONFIG_ARCH_NOMADIK)         := nomadik
 machine-$(CONFIG_ARCH_NS9XXX)          := ns9xxx

diff --git a/arch/arm/mach-mx5/Kconfig b/arch/arm/mach-mx5/Kconfig
new file mode 100644 (file)
index 0000000..1576d51
--- /dev/null
+++ b/arch/arm/mach-mx5/Kconfig
@@ -0,0 +1,18 @@
+if ARCH_MX5
+
+config ARCH_MX51
+       bool
+       default y
+       select MXC_TZIC
+       select ARCH_MXC_IOMUX_V3
+
+comment "MX5 platforms:"
+
+config MACH_MX51_BABBAGE
+       bool "Support MX51 BABBAGE platforms"
+       help
+         Include support for MX51 Babbage platform, also known as MX51EVK in
+         u-boot. This includes specific configurations for the board and its
+         peripherals.
+
+endif

diff --git a/arch/arm/mach-mx5/Makefile b/arch/arm/mach-mx5/Makefile
new file mode 100644 (file)
index 0000000..bf23f86
--- /dev/null
+++ b/arch/arm/mach-mx5/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+obj-y   := cpu.o mm.o clock-mx51.o devices.o
+
+obj-$(CONFIG_MACH_MX51_BABBAGE) += board-mx51_babbage.o
+

diff --git a/arch/arm/mach-mx5/Makefile.boot b/arch/arm/mach-mx5/Makefile.boot
new file mode 100644 (file)
index 0000000..9939a19
--- /dev/null
+++ b/arch/arm/mach-mx5/Makefile.boot
@@ -0,0 +1,3 @@
+   zreladdr-y  := 0x90008000
+params_phys-y  := 0x90000100
+initrd_phys-y  := 0x90800000

diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
new file mode 100644 (file)
index 0000000..d5ccb5f
--- /dev/null
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/imx-uart.h>
+#include <mach/iomux-mx51.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+
+#include "devices.h"
+
+static struct platform_device *devices[] __initdata = {
+       &mxc_fec_device,
+};
+
+static struct pad_desc mx51babbage_pads[] = {
+       /* UART1 */
+       MX51_PAD_UART1_RXD__UART1_RXD,
+       MX51_PAD_UART1_TXD__UART1_TXD,
+       MX51_PAD_UART1_RTS__UART1_RTS,
+       MX51_PAD_UART1_CTS__UART1_CTS,
+
+       /* UART2 */
+       MX51_PAD_UART2_RXD__UART2_RXD,
+       MX51_PAD_UART2_TXD__UART2_TXD,
+
+       /* UART3 */
+       MX51_PAD_EIM_D25__UART3_RXD,
+       MX51_PAD_EIM_D26__UART3_TXD,
+       MX51_PAD_EIM_D27__UART3_RTS,
+       MX51_PAD_EIM_D24__UART3_CTS,
+};
+
+/* Serial ports */
+#if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
+static struct imxuart_platform_data uart_pdata = {
+       .flags = IMXUART_HAVE_RTSCTS,
+};
+
+static inline void mxc_init_imx_uart(void)
+{
+       mxc_register_device(&mxc_uart_device0, &uart_pdata);
+       mxc_register_device(&mxc_uart_device1, &uart_pdata);
+       mxc_register_device(&mxc_uart_device2, &uart_pdata);
+}
+#else /* !SERIAL_IMX */
+static inline void mxc_init_imx_uart(void)
+{
+}
+#endif /* SERIAL_IMX */
+
+/*
+ * Board specific initialization.
+ */
+static void __init mxc_board_init(void)
+{
+       mxc_iomux_v3_setup_multiple_pads(mx51babbage_pads,
+                                       ARRAY_SIZE(mx51babbage_pads));
+       mxc_init_imx_uart();
+       platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+static void __init mx51_babbage_timer_init(void)
+{
+       mx51_clocks_init(32768, 24000000, 22579200, 24576000);
+}
+
+static struct sys_timer mxc_timer = {
+       .init   = mx51_babbage_timer_init,
+};
+
+MACHINE_START(MX51_BABBAGE, "Freescale MX51 Babbage Board")
+       /* Maintainer: Amit Kucheria <amit.kucheria@canonical.com> */
+       .phys_io = MX51_AIPS1_BASE_ADDR,
+       .io_pg_offst = ((MX51_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
+       .boot_params = PHYS_OFFSET + 0x100,
+       .map_io = mx51_map_io,
+       .init_irq = mx51_init_irq,
+       .init_machine = mxc_board_init,
+       .timer = &mxc_timer,
+MACHINE_END

diff --git a/arch/arm/plat-mxc/Kconfig b/arch/arm/plat-mxc/Kconfig
index 59558c4b9446e7d6e7d975ea7a894129b6be2090..cea51a0ae9f7571bf4457f4c36cfc0111a2031c2 100644 (file)
--- a/arch/arm/plat-mxc/Kconfig
+++ b/arch/arm/plat-mxc/Kconfig
@@ -41,6 +41,13 @@ config ARCH_MXC91231
        help
          This enables support for systems based on the Freescale MXC91231 family
 
+config ARCH_MX5
+       bool "MX5-based"
+       select CPU_V7
+       select COMMON_CLKDEV
+       help
+         This enables support for systems based on the Freescale i.MX51 family
+
 endchoice
 
 source "arch/arm/mach-mx1/Kconfig"
@@ -48,6 +55,7 @@ source "arch/arm/mach-mx2/Kconfig"
 source "arch/arm/mach-mx3/Kconfig"
 source "arch/arm/mach-mx25/Kconfig"
 source "arch/arm/mach-mxc91231/Kconfig"
+source "arch/arm/mach-mx5/Kconfig"
 
 endmenu