ARM: OMAP: Add minimal OMAP2430 support

This patch adds minimal OMAP2430 support to get the kernel booting on 2430SDP.

Signed-off-by: Syed Mohammed Khasim <x0khasim@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 218 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
new file mode 100644
index 00000000000..7e76fbf19b5
--- /dev/null
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -0,0 +1,218 @@
+/*
+ * linux/arch/arm/mach-omap2/board-2430sdp.c
+ *
+ * Copyright (C) 2006 Texas Instruments
+ *
+ * Modified from mach-omap2/board-generic.c
+ *
+ * Initial Code : Based on a patch from Komal Shah and Richard Woodruff
+ * Updated the Code for 2430 SDP : Syed Mohammed Khasim
+ *
+ * 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/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/board.h>
+#include <asm/arch/common.h>
+#include <asm/arch/gpmc.h>
+#include "prcm-regs.h"
+
+#include <asm/io.h>
+
+
+#define	SDP2430_FLASH_CS	0
+#define	SDP2430_SMC91X_CS	5
+
+static struct mtd_partition sdp2430_partitions[] = {
+	/* bootloader (U-Boot, etc) in first sector */
+	{
+		.name		= "bootloader",
+		.offset		= 0,
+		.size		= SZ_256K,
+		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+	 },
+	/* bootloader params in the next sector */
+	{
+		.name		= "params",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_128K,
+		.mask_flags	= 0,
+	 },
+	/* kernel */
+	{
+		.name		= "kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_2M,
+		.mask_flags	= 0
+	},
+	/* file system */
+	{
+		.name		= "filesystem",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0
+	}
+};
+
+static struct flash_platform_data sdp2430_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+	.parts		= sdp2430_partitions,
+	.nr_parts	= ARRAY_SIZE(sdp2430_partitions),
+};
+
+static struct resource sdp2430_flash_resource = {
+	.start		= SDP2430_CS0_BASE,
+	.end		= SDP2430_CS0_BASE + SZ_64M - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device sdp2430_flash_device = {
+	.name		= "omapflash",
+	.id		= 0,
+	.dev = {
+		.platform_data	= &sdp2430_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &sdp2430_flash_resource,
+};
+
+static struct resource sdp2430_smc91x_resources[] = {
+	[0] = {
+		.start	= SDP2430_CS0_BASE,
+		.end	= SDP2430_CS0_BASE + SZ_64M - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
+		.end	= OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device sdp2430_smc91x_device = {
+	.name		= "smc91x",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(sdp2430_smc91x_resources),
+	.resource	= sdp2430_smc91x_resources,
+};
+
+static struct platform_device *sdp2430_devices[] __initdata = {
+	&sdp2430_smc91x_device,
+	&sdp2430_flash_device,
+};
+
+static inline void __init sdp2430_init_smc91x(void)
+{
+	int eth_cs;
+	unsigned long cs_mem_base;
+	unsigned int rate;
+	struct clk *l3ck;
+
+	eth_cs = SDP2430_SMC91X_CS;
+
+	l3ck = clk_get(NULL, "core_l3_ck");
+	if (IS_ERR(l3ck))
+		rate = 100000000;
+	else
+		rate = clk_get_rate(l3ck);
+
+	/* Make sure CS1 timings are correct, for 2430 always muxed */
+	gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
+
+	if (rate >= 160000000) {
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
+	} else if (rate >= 130000000) {
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
+	} else { /* rate = 100000000 */
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
+	}
+
+	if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
+		printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
+		return;
+	}
+
+	sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
+	sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
+	udelay(100);
+
+	if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
+		printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
+			OMAP24XX_ETHR_GPIO_IRQ);
+		gpmc_cs_free(eth_cs);
+		return;
+	}
+	omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
+
+}
+
+static void __init omap_2430sdp_init_irq(void)
+{
+	omap2_init_common_hw();
+	omap_init_irq();
+	omap_gpio_init();
+	sdp2430_init_smc91x();
+}
+
+static struct omap_uart_config sdp2430_uart_config __initdata = {
+	.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
+};
+
+static struct omap_board_config_kernel sdp2430_config[] = {
+	{OMAP_TAG_UART, &sdp2430_uart_config},
+};
+
+static void __init omap_2430sdp_init(void)
+{
+	platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
+	omap_board_config = sdp2430_config;
+	omap_board_config_size = ARRAY_SIZE(sdp2430_config);
+	omap_serial_init();
+}
+
+static void __init omap_2430sdp_map_io(void)
+{
+	omap2_map_common_io();
+}
+
+MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
+	/* Maintainer: Syed Khasim - Texas Instruments Inc */
+	.phys_io	= 0x48000000,
+	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
+	.boot_params	= 0x80000100,
+	.map_io		= omap_2430sdp_map_io,
+	.init_irq	= omap_2430sdp_init_irq,
+	.init_machine	= omap_2430sdp_init,
+	.timer		= &omap_timer,
+MACHINE_END