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linux-next/arch/arm/mach-omap2/board-h4.c
Paul Walmsley b3c6df3ab2 OMAP2/3 board-*.c files: read bootloader configuration earlier 
Most board-*.c files read configuration data from the bootloader in
their .init_machine() function.  This needs to happen earlier, at some
point before omap2_init_common_hw() is called.  This is because a
future patch will use the bootloader serial console port information
to enable the UART clocks earlier, immediately after omap2_clk_init().
This is in turn necessary since otherwise clock tree usecounts on
clocks like dpll4_m2x2_ck will be bogus, which can cause the
currently-active console UART clock to be disabled during boot.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-09-03 20:14:02 +03:00

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9.2 KiB
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/*
* linux/arch/arm/mach-omap2/board-h4.c
*
* Copyright (C) 2005 Nokia Corporation
* Author: Paul Mundt <paul.mundt@nokia.com>
*
* Modified from mach-omap/omap1/board-generic.c
*
* 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/workqueue.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/input.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>
#include <mach/control.h>
#include <mach/gpio.h>
#include <mach/mux.h>
#include <mach/usb.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/keypad.h>
#include <mach/menelaus.h>
#include <mach/dma.h>
#include <mach/gpmc.h>
#define H4_FLASH_CS 0
#define H4_SMC91X_CS 1
#define H4_ETHR_GPIO_IRQ 92
static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
static int h4_keymap[] = {
KEY(0, 0, KEY_LEFT),
KEY(0, 1, KEY_RIGHT),
KEY(0, 2, KEY_A),
KEY(0, 3, KEY_B),
KEY(0, 4, KEY_C),
KEY(1, 0, KEY_DOWN),
KEY(1, 1, KEY_UP),
KEY(1, 2, KEY_E),
KEY(1, 3, KEY_F),
KEY(1, 4, KEY_G),
KEY(2, 0, KEY_ENTER),
KEY(2, 1, KEY_I),
KEY(2, 2, KEY_J),
KEY(2, 3, KEY_K),
KEY(2, 4, KEY_3),
KEY(3, 0, KEY_M),
KEY(3, 1, KEY_N),
KEY(3, 2, KEY_O),
KEY(3, 3, KEY_P),
KEY(3, 4, KEY_Q),
KEY(4, 0, KEY_R),
KEY(4, 1, KEY_4),
KEY(4, 2, KEY_T),
KEY(4, 3, KEY_U),
KEY(4, 4, KEY_ENTER),
KEY(5, 0, KEY_V),
KEY(5, 1, KEY_W),
KEY(5, 2, KEY_L),
KEY(5, 3, KEY_S),
KEY(5, 4, KEY_ENTER),
0
};
static struct mtd_partition h4_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
.name = "bootloader",
.offset = 0,
.size = SZ_128K,
.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 h4_flash_data = {
.map_name = "cfi_probe",
.width = 2,
.parts = h4_partitions,
.nr_parts = ARRAY_SIZE(h4_partitions),
};
static struct resource h4_flash_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device h4_flash_device = {
.name = "omapflash",
.id = 0,
.dev = {
.platform_data = &h4_flash_data,
},
.num_resources = 1,
.resource = &h4_flash_resource,
};
static struct omap_kp_platform_data h4_kp_data = {
.rows = 6,
.cols = 7,
.keymap = h4_keymap,
.keymapsize = ARRAY_SIZE(h4_keymap),
.rep = 1,
.row_gpios = row_gpios,
.col_gpios = col_gpios,
};
static struct platform_device h4_kp_device = {
.name = "omap-keypad",
.id = -1,
.dev = {
.platform_data = &h4_kp_data,
},
};
static struct platform_device h4_lcd_device = {
.name = "lcd_h4",
.id = -1,
};
static struct platform_device *h4_devices[] __initdata = {
&h4_flash_device,
&h4_kp_device,
&h4_lcd_device,
};
/* 2420 Sysboot setup (2430 is different) */
static u32 get_sysboot_value(void)
{
return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
(OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
}
/* H4-2420's always used muxed mode, H4-2422's always use non-muxed
*
* Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
* correctly. The macro needs to look at production_id not just hawkeye.
*/
static u32 is_gpmc_muxed(void)
{
u32 mux;
mux = get_sysboot_value();
if ((mux & 0xF) == 0xd)
return 1; /* NAND config (could be either) */
if (mux & 0x2) /* if mux'ed */
return 1;
else
return 0;
}
static inline void __init h4_init_debug(void)
{
int eth_cs;
unsigned long cs_mem_base;
unsigned int muxed, rate;
struct clk *gpmc_fck;
eth_cs = H4_SMC91X_CS;
gpmc_fck = clk_get(NULL, "gpmc_fck"); /* Always on ENABLE_ON_INIT */
if (IS_ERR(gpmc_fck)) {
WARN_ON(1);
return;
}
clk_enable(gpmc_fck);
rate = clk_get_rate(gpmc_fck);
clk_disable(gpmc_fck);
clk_put(gpmc_fck);
if (is_gpmc_muxed())
muxed = 0x200;
else
muxed = 0;
/* Make sure CS1 timings are correct */
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
0x00011000 | muxed);
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");
goto out;
}
udelay(100);
omap_cfg_reg(M15_24XX_GPIO92);
if (debug_card_init(cs_mem_base, H4_ETHR_GPIO_IRQ) < 0)
gpmc_cs_free(eth_cs);
out:
clk_disable(gpmc_fck);
clk_put(gpmc_fck);
}
static void __init h4_init_flash(void)
{
unsigned long base;
if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
printk("Can't request GPMC CS for flash\n");
return;
}
h4_flash_resource.start = base;
h4_flash_resource.end = base + SZ_64M - 1;
}
static struct omap_lcd_config h4_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_usb_config h4_usb_config __initdata = {
#ifdef CONFIG_MACH_OMAP2_H4_USB1
/* NOTE: usb1 could also be used with 3 wire signaling */
.pins[1] = 4,
#endif
#ifdef CONFIG_MACH_OMAP_H4_OTG
/* S1.10 ON -- USB OTG port
* usb0 switched to Mini-AB port and isp1301 transceiver;
* S2.POS3 = OFF, S2.POS4 = ON ... to allow battery charging
*/
.otg = 1,
.pins[0] = 4,
#ifdef CONFIG_USB_GADGET_OMAP
/* use OTG cable, or standard A-to-MiniB */
.hmc_mode = 0x14, /* 0:dev/otg 1:host 2:disable */
#elif defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
/* use OTG cable, or NONSTANDARD (B-to-MiniB) */
.hmc_mode = 0x11, /* 0:host 1:host 2:disable */
#endif /* XX */
#else
/* S1.10 OFF -- usb "download port"
* usb0 switched to Mini-B port and isp1105 transceiver;
* S2.POS3 = ON, S2.POS4 = OFF ... to enable battery charging
*/
.register_dev = 1,
.pins[0] = 3,
/* .hmc_mode = 0x14,*/ /* 0:dev 1:host 2:disable */
.hmc_mode = 0x00, /* 0:dev|otg 1:disable 2:disable */
#endif
};
static struct omap_board_config_kernel h4_config[] = {
{ OMAP_TAG_LCD, &h4_lcd_config },
};
static void __init omap_h4_init_irq(void)
{
omap_board_config = h4_config;
omap_board_config_size = ARRAY_SIZE(h4_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
omap_gpio_init();
h4_init_flash();
}
static struct at24_platform_data m24c01 = {
.byte_len = SZ_1K / 8,
.page_size = 16,
};
static struct i2c_board_info __initdata h4_i2c_board_info[] = {
{
I2C_BOARD_INFO("isp1301_omap", 0x2d),
.irq = OMAP_GPIO_IRQ(125),
},
{ /* EEPROM on mainboard */
I2C_BOARD_INFO("24c01", 0x52),
.platform_data = &m24c01,
},
{ /* EEPROM on cpu card */
I2C_BOARD_INFO("24c01", 0x57),
.platform_data = &m24c01,
},
};
static void __init omap_h4_init(void)
{
/*
* Make sure the serial ports are muxed on at this point.
* You have to mux them off in device drivers later on
* if not needed.
*/
#if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
omap_cfg_reg(K15_24XX_UART3_TX);
omap_cfg_reg(K14_24XX_UART3_RX);
#endif
#if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
if (omap_has_menelaus()) {
row_gpios[5] = 0;
col_gpios[2] = 15;
col_gpios[6] = 18;
}
#endif
i2c_register_board_info(1, h4_i2c_board_info,
ARRAY_SIZE(h4_i2c_board_info));
platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
omap_usb_init(&h4_usb_config);
omap_serial_init();
}
static void __init omap_h4_map_io(void)
{
omap2_set_globals_242x();
omap2_map_common_io();
}
MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap_h4_map_io,
.init_irq = omap_h4_init_irq,
.init_machine = omap_h4_init,
.timer = &omap_timer,
MACHINE_END
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