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Diffstat (limited to 'arch/arm/plat-omap/common.c')
| -rw-r--r-- | arch/arm/plat-omap/common.c | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c deleted file mode 100644 index ebcf006406f..00000000000 --- a/arch/arm/plat-omap/common.c +++ /dev/null @@ -1,383 +0,0 @@ -/* - * linux/arch/arm/plat-omap/common.c - * - * Code common to all OMAP machines. - * The file is created by Tony Lindgren <tony@atomide.com> - * - * Copyright (C) 2009 Texas Instruments - * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.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/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/console.h> -#include <linux/serial.h> -#include <linux/tty.h> -#include <linux/serial_8250.h> -#include <linux/serial_reg.h> -#include <linux/clk.h> -#include <linux/io.h> - -#include <mach/hardware.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/mach/map.h> -#include <asm/setup.h> - -#include <mach/common.h> -#include <mach/board.h> -#include <mach/control.h> -#include <mach/mux.h> -#include <mach/fpga.h> - -#include <mach/clock.h> - -#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) -# include "../mach-omap2/sdrc.h" -#endif - -#define NO_LENGTH_CHECK 0xffffffff - -unsigned char omap_bootloader_tag[512]; -int omap_bootloader_tag_len; - -struct omap_board_config_kernel *omap_board_config; -int omap_board_config_size; - -static const void *get_config(u16 tag, size_t len, int skip, size_t *len_out) -{ - struct omap_board_config_kernel *kinfo = NULL; - int i; - -#ifdef CONFIG_OMAP_BOOT_TAG - struct omap_board_config_entry *info = NULL; - - if (omap_bootloader_tag_len > 4) - info = (struct omap_board_config_entry *) omap_bootloader_tag; - while (info != NULL) { - u8 *next; - - if (info->tag == tag) { - if (skip == 0) - break; - skip--; - } - - if ((info->len & 0x03) != 0) { - /* We bail out to avoid an alignment fault */ - printk(KERN_ERR "OMAP peripheral config: Length (%d) not word-aligned (tag %04x)\n", - info->len, info->tag); - return NULL; - } - next = (u8 *) info + sizeof(*info) + info->len; - if (next >= omap_bootloader_tag + omap_bootloader_tag_len) - info = NULL; - else - info = (struct omap_board_config_entry *) next; - } - if (info != NULL) { - /* Check the length as a lame attempt to check for - * binary inconsistency. */ - if (len != NO_LENGTH_CHECK) { - /* Word-align len */ - if (len & 0x03) - len = (len + 3) & ~0x03; - if (info->len != len) { - printk(KERN_ERR "OMAP peripheral config: Length mismatch with tag %x (want %d, got %d)\n", - tag, len, info->len); - return NULL; - } - } - if (len_out != NULL) - *len_out = info->len; - return info->data; - } -#endif - /* Try to find the config from the board-specific structures - * in the kernel. */ - for (i = 0; i < omap_board_config_size; i++) { - if (omap_board_config[i].tag == tag) { - if (skip == 0) { - kinfo = &omap_board_config[i]; - break; - } else { - skip--; - } - } - } - if (kinfo == NULL) - return NULL; - return kinfo->data; -} - -const void *__omap_get_config(u16 tag, size_t len, int nr) -{ - return get_config(tag, len, nr, NULL); -} -EXPORT_SYMBOL(__omap_get_config); - -const void *omap_get_var_config(u16 tag, size_t *len) -{ - return get_config(tag, NO_LENGTH_CHECK, 0, len); -} -EXPORT_SYMBOL(omap_get_var_config); - -static int __init omap_add_serial_console(void) -{ - const struct omap_serial_console_config *con_info; - const struct omap_uart_config *uart_info; - static char speed[11], *opt = NULL; - int line, i, uart_idx; - - uart_info = omap_get_config(OMAP_TAG_UART, struct omap_uart_config); - con_info = omap_get_config(OMAP_TAG_SERIAL_CONSOLE, - struct omap_serial_console_config); - if (uart_info == NULL || con_info == NULL) - return 0; - - if (con_info->console_uart == 0) - return 0; - - if (con_info->console_speed) { - snprintf(speed, sizeof(speed), "%u", con_info->console_speed); - opt = speed; - } - - uart_idx = con_info->console_uart - 1; - if (uart_idx >= OMAP_MAX_NR_PORTS) { - printk(KERN_INFO "Console: external UART#%d. " - "Not adding it as console this time.\n", - uart_idx + 1); - return 0; - } - if (!(uart_info->enabled_uarts & (1 << uart_idx))) { - printk(KERN_ERR "Console: Selected UART#%d is " - "not enabled for this platform\n", - uart_idx + 1); - return -1; - } - line = 0; - for (i = 0; i < uart_idx; i++) { - if (uart_info->enabled_uarts & (1 << i)) - line++; - } - return add_preferred_console("ttyS", line, opt); -} -console_initcall(omap_add_serial_console); - - -/* - * 32KHz clocksource ... always available, on pretty most chips except - * OMAP 730 and 1510. Other timers could be used as clocksources, with - * higher resolution in free-running counter modes (e.g. 12 MHz xtal), - * but systems won't necessarily want to spend resources that way. - */ - -#define OMAP16XX_TIMER_32K_SYNCHRONIZED 0xfffbc410 - -#if !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) - -#include <linux/clocksource.h> - -#ifdef CONFIG_ARCH_OMAP16XX -static cycle_t omap16xx_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP16XX_TIMER_32K_SYNCHRONIZED); -} -#else -#define omap16xx_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP2420 -static cycle_t omap2420_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP2420_32KSYNCT_BASE + 0x10); -} -#else -#define omap2420_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP2430 -static cycle_t omap2430_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP2430_32KSYNCT_BASE + 0x10); -} -#else -#define omap2430_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP34XX -static cycle_t omap34xx_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP3430_32KSYNCT_BASE + 0x10); -} -#else -#define omap34xx_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP4 -static cycle_t omap44xx_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10); -} -#else -#define omap44xx_32k_read NULL -#endif - -/* - * Kernel assumes that sched_clock can be called early but may not have - * things ready yet. - */ -static cycle_t omap_32k_read_dummy(struct clocksource *cs) -{ - return 0; -} - -static struct clocksource clocksource_32k = { - .name = "32k_counter", - .rating = 250, - .read = omap_32k_read_dummy, - .mask = CLOCKSOURCE_MASK(32), - .shift = 10, - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -/* - * Returns current time from boot in nsecs. It's OK for this to wrap - * around for now, as it's just a relative time stamp. - */ -unsigned long long sched_clock(void) -{ - unsigned long long ret; - - ret = (unsigned long long)clocksource_32k.read(&clocksource_32k); - ret = (ret * clocksource_32k.mult_orig) >> clocksource_32k.shift; - return ret; -} - -static int __init omap_init_clocksource_32k(void) -{ - static char err[] __initdata = KERN_ERR - "%s: can't register clocksource!\n"; - - if (cpu_is_omap16xx() || cpu_class_is_omap2()) { - struct clk *sync_32k_ick; - - if (cpu_is_omap16xx()) - clocksource_32k.read = omap16xx_32k_read; - else if (cpu_is_omap2420()) - clocksource_32k.read = omap2420_32k_read; - else if (cpu_is_omap2430()) - clocksource_32k.read = omap2430_32k_read; - else if (cpu_is_omap34xx()) - clocksource_32k.read = omap34xx_32k_read; - else if (cpu_is_omap44xx()) - clocksource_32k.read = omap44xx_32k_read; - else - return -ENODEV; - - sync_32k_ick = clk_get(NULL, "omap_32ksync_ick"); - if (sync_32k_ick) - clk_enable(sync_32k_ick); - - clocksource_32k.mult = clocksource_hz2mult(32768, - clocksource_32k.shift); - - if (clocksource_register(&clocksource_32k)) - printk(err, clocksource_32k.name); - } - return 0; -} -arch_initcall(omap_init_clocksource_32k); - -#endif /* !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) */ - -/* Global address base setup code */ - -#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) - -static void __init __omap2_set_globals(struct omap_globals *omap2_globals) -{ - omap2_set_globals_tap(omap2_globals); - omap2_set_globals_sdrc(omap2_globals); - omap2_set_globals_control(omap2_globals); - omap2_set_globals_prcm(omap2_globals); -} - -#endif - -#if defined(CONFIG_ARCH_OMAP2420) - -static struct omap_globals omap242x_globals = { - .class = OMAP242X_CLASS, - .tap = OMAP2_IO_ADDRESS(0x48014000), - .sdrc = OMAP2_IO_ADDRESS(OMAP2420_SDRC_BASE), - .sms = OMAP2_IO_ADDRESS(OMAP2420_SMS_BASE), - .ctrl = OMAP2_IO_ADDRESS(OMAP2420_CTRL_BASE), - .prm = OMAP2_IO_ADDRESS(OMAP2420_PRM_BASE), - .cm = OMAP2_IO_ADDRESS(OMAP2420_CM_BASE), -}; - -void __init omap2_set_globals_242x(void) -{ - __omap2_set_globals(&omap242x_globals); -} -#endif - -#if defined(CONFIG_ARCH_OMAP2430) - -static struct omap_globals omap243x_globals = { - .class = OMAP243X_CLASS, - .tap = OMAP2_IO_ADDRESS(0x4900a000), - .sdrc = OMAP2_IO_ADDRESS(OMAP243X_SDRC_BASE), - .sms = OMAP2_IO_ADDRESS(OMAP243X_SMS_BASE), - .ctrl = OMAP2_IO_ADDRESS(OMAP243X_CTRL_BASE), - .prm = OMAP2_IO_ADDRESS(OMAP2430_PRM_BASE), - .cm = OMAP2_IO_ADDRESS(OMAP2430_CM_BASE), -}; - -void __init omap2_set_globals_243x(void) -{ - __omap2_set_globals(&omap243x_globals); -} -#endif - -#if defined(CONFIG_ARCH_OMAP3430) - -static struct omap_globals omap343x_globals = { - .class = OMAP343X_CLASS, - .tap = OMAP2_IO_ADDRESS(0x4830A000), - .sdrc = OMAP2_IO_ADDRESS(OMAP343X_SDRC_BASE), - .sms = OMAP2_IO_ADDRESS(OMAP343X_SMS_BASE), - .ctrl = OMAP2_IO_ADDRESS(OMAP343X_CTRL_BASE), - .prm = OMAP2_IO_ADDRESS(OMAP3430_PRM_BASE), - .cm = OMAP2_IO_ADDRESS(OMAP3430_CM_BASE), -}; - -void __init omap2_set_globals_343x(void) -{ - __omap2_set_globals(&omap343x_globals); -} -#endif - -#if defined(CONFIG_ARCH_OMAP4) -static struct omap_globals omap4_globals = { - .class = OMAP443X_CLASS, - .tap = OMAP2_IO_ADDRESS(0x4830a000), - .ctrl = OMAP2_IO_ADDRESS(OMAP443X_CTRL_BASE), - .prm = OMAP2_IO_ADDRESS(OMAP4430_PRM_BASE), - .cm = OMAP2_IO_ADDRESS(OMAP4430_CM_BASE), -}; - -void __init omap2_set_globals_443x(void) -{ - omap2_set_globals_tap(&omap4_globals); - omap2_set_globals_control(&omap4_globals); -} -#endif - |