X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=arch%2Farm%2Fplat-omap%2Fcommon.c;fp=arch%2Farm%2Fplat-omap%2Fcommon.c;h=adffc5a859ee7760c592785c8001842c54e99016;hb=16cf0ec7408f389279d413869e94c1a351392f97;hp=0000000000000000000000000000000000000000;hpb=65da6b7c3bf0bd6a149128079565e5f4efec28ac;p=linux-2.6.git

diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
new file mode 100644
index 000000000..adffc5a85
--- /dev/null
+++ b/arch/arm/plat-omap/common.c
@@ -0,0 +1,159 @@
+/*
+ * linux/arch/arm/plat-omap/common.c
+ *
+ * Code common to all OMAP machines.
+ *
+ * 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/config.h>
+#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 <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 <asm/arch/board.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/fpga.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;
+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 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 (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);