* 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/pm.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 <linux/dma-mapping.h>
-#include <asm/hardware.h>
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/mach/map.h>
-#include <asm/io.h>
-#include <asm/setup.h>
+#include <plat/common.h>
+#include <plat/board.h>
+#include <plat/vram.h>
+#include <plat/dsp.h>
+#include <plat/dma.h>
-#include <asm/arch/board.h>
-#include <asm/arch/mux.h>
-#include <asm/arch/fpga.h>
+#include <plat/omap-secure.h>
-#include <asm/arch/clock.h>
#define NO_LENGTH_CHECK 0xffffffff
-unsigned char omap_bootloader_tag[512];
-int omap_bootloader_tag_len;
-
-struct omap_board_config_kernel *omap_board_config;
+struct omap_board_config_kernel *omap_board_config __initdata;
int omap_board_config_size;
-static const void *get_config(u16 tag, size_t len, int skip, size_t *len_out)
+static const void *__init 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 inconsistancy. */
- 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) {
- kinfo = &omap_board_config[i];
- break;
+ if (skip == 0) {
+ kinfo = &omap_board_config[i];
+ break;
+ } else {
+ skip--;
+ }
}
}
if (kinfo == NULL)
return kinfo->data;
}
-const void *__omap_get_config(u16 tag, size_t len, int nr)
+const void *__init __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)
+const void *__init 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)
+void __init omap_reserve(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);
+ omap_vram_reserve_sdram_memblock();
+ omap_dsp_reserve_sdram_memblock();
+ omap_secure_ram_reserve_memblock();
+ omap_barrier_reserve_memblock();
}
-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.
- */
-
-#if defined(CONFIG_ARCH_OMAP16XX)
-#define TIMER_32K_SYNCHRONIZED 0xfffbc410
-#elif defined(CONFIG_ARCH_OMAP24XX)
-#define TIMER_32K_SYNCHRONIZED 0x48004010
-#endif
-
-#ifdef TIMER_32K_SYNCHRONIZED
-#include <linux/clocksource.h>
-
-static cycle_t omap_32k_read(void)
+void __init omap_init_consistent_dma_size(void)
{
- return omap_readl(TIMER_32K_SYNCHRONIZED);
+#ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
+ init_consistent_dma_size(CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE << 20);
+#endif
}
-static struct clocksource clocksource_32k = {
- .name = "32k_counter",
- .rating = 250,
- .read = omap_32k_read,
- .mask = CLOCKSOURCE_MASK(32),
- .shift = 10,
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static int __init omap_init_clocksource_32k(void)
+/*
+ * Stub function for OMAP2 so that common files
+ * continue to build when custom builds are used
+ */
+int __weak omap_secure_ram_reserve_memblock(void)
{
- static char err[] __initdata = KERN_ERR
- "%s: can't register clocksource!\n";
-
- if (cpu_is_omap16xx() || cpu_is_omap24xx()) {
- 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 /* TIMER_32K_SYNCHRONIZED */