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>
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
new file mode 100644
index 0000000..7e76fbf
--- /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