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 000000000000..7e76fbf19b5d
--- /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