ARM: 5831/1: ARM: U8500 core machine support

Adds core support for the ST-Ericsson U8500
platform. It supports memory mappings, binds to
the existing modules like GIC, SCU, TWD and
local timers and sets up the infrastructure for
the secondary core.

Reviewed-by: Alessandro Rubini <rubini@unipv.it>
Reviewed-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 158 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
new file mode 100644
index 00000000000..aa5afbcc90f
--- /dev/null
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2008-2009 ST-Ericsson
+ *
+ * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
+ *
+ * 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.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl022.h>
+#include <linux/spi/spi.h>
+
+#include <asm/localtimer.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <plat/mtu.h>
+
+#include <mach/hardware.h>
+#include <mach/setup.h>
+
+#define __MEM_4K_RESOURCE(x) \
+	.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
+
+/* These are active devices on this board */
+static struct amba_device uart0_device = {
+	.dev = { .init_name = "uart0" },
+	__MEM_4K_RESOURCE(U8500_UART0_BASE),
+	.irq = {IRQ_UART0, NO_IRQ},
+};
+
+static struct amba_device uart1_device = {
+	.dev = { .init_name = "uart1" },
+	__MEM_4K_RESOURCE(U8500_UART1_BASE),
+	.irq = {IRQ_UART1, NO_IRQ},
+};
+
+static struct amba_device uart2_device = {
+	.dev = { .init_name = "uart2" },
+	__MEM_4K_RESOURCE(U8500_UART2_BASE),
+	.irq = {IRQ_UART2, NO_IRQ},
+};
+
+static void ab4500_spi_cs_control(u32 command)
+{
+	/* set the FRM signal, which is CS  - TODO */
+}
+
+struct pl022_config_chip ab4500_chip_info = {
+	.lbm = LOOPBACK_DISABLED,
+	.com_mode = INTERRUPT_TRANSFER,
+	.iface = SSP_INTERFACE_MOTOROLA_SPI,
+	/* we can act as master only */
+	.hierarchy = SSP_MASTER,
+	.slave_tx_disable = 0,
+	.endian_rx = SSP_RX_MSB,
+	.endian_tx = SSP_TX_MSB,
+	.data_size = SSP_DATA_BITS_24,
+	.rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
+	.tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
+	.clk_phase = SSP_CLK_SECOND_EDGE,
+	.clk_pol = SSP_CLK_POL_IDLE_HIGH,
+	.cs_control = ab4500_spi_cs_control,
+};
+
+static struct spi_board_info u8500_spi_devices[] = {
+	{
+		.modalias = "ab4500",
+		.controller_data = &ab4500_chip_info,
+		.max_speed_hz = 12000000,
+		.bus_num = 0,
+		.chip_select = 0,
+		.mode = SPI_MODE_0,
+		.irq = IRQ_AB4500,
+	},
+};
+
+static struct pl022_ssp_controller ssp0_platform_data = {
+	.bus_id = 0,
+	/* pl022 not yet supports dma */
+	.enable_dma = 0,
+	/* on this platform, gpio 31,142,144,214 &
+	 * 224 are connected as chip selects
+	 */
+	.num_chipselect = 5,
+};
+
+static struct amba_device pl022_device = {
+	.dev = {
+		.coherent_dma_mask = ~0,
+		.init_name = "pl022",
+		.platform_data = &ssp0_platform_data,
+	},
+	.res = {
+		.start = U8500_SSP0_BASE,
+		.end   = U8500_SSP0_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	.irq = {IRQ_SSP0, NO_IRQ },
+	/* ST-Ericsson modified id */
+	.periphid = SSP_PER_ID,
+};
+
+static struct amba_device *amba_devs[] __initdata = {
+	&uart0_device,
+	&uart1_device,
+	&uart2_device,
+	&pl022_device,
+};
+
+static void __init u8500_timer_init(void)
+{
+#ifdef CONFIG_LOCAL_TIMERS
+	/* Setup the local timer base */
+	twd_base = __io_address(U8500_TWD_BASE);
+#endif
+	/* Setup the MTU base */
+	mtu_base = __io_address(U8500_MTU0_BASE);
+
+	nmdk_timer_init();
+}
+
+static struct sys_timer u8500_timer = {
+	.init	= u8500_timer_init,
+};
+
+static void __init u8500_init_machine(void)
+{
+	int i;
+
+	/* Register the active AMBA devices on this board */
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
+		amba_device_register(amba_devs[i], &iomem_resource);
+
+	spi_register_board_info(u8500_spi_devices,
+			ARRAY_SIZE(u8500_spi_devices));
+
+	u8500_init_devices();
+}
+
+MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
+	/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
+	.phys_io	= U8500_UART2_BASE,
+	.io_pg_offst	= (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
+	.boot_params	= 0x100,
+	.map_io		= u8500_map_io,
+	.init_irq	= u8500_init_irq,
+	/* we re-use nomadik timer here */
+	.timer		= &u8500_timer,
+	.init_machine	= u8500_init_machine,
+MACHINE_END