1 files changed, 299 insertions, 0 deletions
diff --git a/target/linux/atheros/files-2.6.28/arch/mips/atheros/board.c b/target/linux/atheros/files-2.6.28/arch/mips/atheros/board.c
new file mode 100644
index 0000000000..4a224933ae
--- /dev/null
+++ b/target/linux/atheros/files-2.6.28/arch/mips/atheros/board.c
@@ -0,0 +1,299 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+/*
+ * Platform devices for Atheros SoCs
+ */
+
+#include <linux/autoconf.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/random.h>
+#include <asm/bootinfo.h>
+#include <asm/irq_cpu.h>
+#include <asm/io.h>
+#include <ar531x.h>
+
+char *board_config = NULL;
+char *radio_config = NULL;
+int broken_boarddata = 0;
+
+extern int early_serial_setup(struct uart_port *port);
+
+static inline bool
+check_radio_magic(unsigned char *addr)
+{
+	addr += 0x7a; /* offset for flash magic */
+	if ((addr[0] == 0x5a) && (addr[1] == 0xa5)) {
+		return 1;
+	}
+	return 0;
+}
+
+static inline bool
+check_board_data(unsigned char *flash_limit, unsigned char *addr, bool broken)
+{
+	/* config magic found */
+	if ( *(int *)addr == 0x35333131)
+		return 1;
+
+	if (!broken)
+		return 0;
+
+	if (check_radio_magic(addr + 0xf8))
+		radio_config = addr + 0xf8;
+	if ((addr < flash_limit + 0x10000) &&
+	     check_radio_magic(addr + 0x10000))
+		radio_config = addr + 0x10000;
+
+	if (radio_config) {
+		/* broken board data detected, use radio data to find the offset,
+		 * user will fix this */
+		broken_boarddata = 1;
+		return 1;
+	}
+	return 0;
+}
+
+static u8 *find_board_config(char *flash_limit, bool broken)
+{
+	char *addr;
+	int found = 0;
+
+	for (addr = (char *) (flash_limit - 0x1000);
+		addr >= (char *) (flash_limit - 0x30000);
+		addr -= 0x1000) {
+
+		if (check_board_data(flash_limit, addr, broken)) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found)
+		addr = NULL;
+
+	return addr;
+}
+
+static u8 *find_radio_config(char *flash_limit, char *board_config)
+{
+	int dataFound;
+	char *radio_config;
+
+	/*
+	 * Now find the start of Radio Configuration data, using heuristics:
+	 * Search forward from Board Configuration data by 0x1000 bytes
+	 * at a time until we find non-0xffffffff.
+	 */
+	dataFound = 0;
+	for (radio_config = board_config + 0x1000;
+	     (radio_config < flash_limit);
+	     radio_config += 0x1000) {
+		if ((*(u32 *)radio_config != 0xffffffff) &&
+		    check_radio_magic(radio_config)) {
+			dataFound = 1;
+			break;
+		}
+	}
+
+#ifdef CONFIG_ATHEROS_AR5315
+	if (!dataFound) { /* AR2316 relocates radio config to new location */
+	    for (radio_config = board_config + 0xf8;
+	     	(radio_config < flash_limit - 0x1000 + 0xf8);
+			 radio_config += 0x1000) {
+			if ((*(u32 *)radio_config != 0xffffffff) &&
+				check_radio_magic(radio_config)) {
+				dataFound = 1;
+				break;
+			}
+	    }
+	}
+#endif
+
+	if (!dataFound) {
+		printk("Could not find Radio Configuration data\n");
+		radio_config = 0;
+	}
+
+	return (u8 *) radio_config;
+}
+
+int __init ar531x_find_config(char *flash_limit)
+{
+	struct ar531x_boarddata *bd;
+	unsigned int rcfg_size;
+	char *bcfg, *rcfg;
+
+	/* Copy the board and radio data to RAM, because with the new
+	 * spiflash driver, accessing the mapped memory directly is no
+	 * longer safe */
+
+	bcfg = find_board_config(flash_limit, false);
+	if (!bcfg)
+		bcfg = find_board_config(flash_limit, true);
+	if (!bcfg) {
+		printk("WARNING: No board configuration data found!\n");
+		return -ENODEV;
+	}
+
+	board_config = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+	memcpy(board_config, bcfg, 0x100);
+	if (broken_boarddata) {
+		printk("WARNING: broken board data detected\n");
+		bd = (struct ar531x_boarddata *)board_config;
+		if (!memcmp(bd->enet0Mac, "\x00\x00\x00\x00\x00\x00", 6)) {
+			printk("Fixing up empty mac addresses\n");
+			bd->enet0Mac[1] = 0x13;
+			bd->enet0Mac[2] = 0x37;
+			get_random_bytes(bd->enet0Mac + 3, 3);
+			bd->wlan0Mac[1] = 0x13;
+			bd->wlan0Mac[2] = 0x37;
+			get_random_bytes(bd->wlan0Mac + 3, 3);
+		}
+	}
+
+
+	/* Radio config starts 0x100 bytes after board config, regardless
+	 * of what the physical layout on the flash chip looks like */
+
+	if (radio_config)
+		rcfg = radio_config;
+	else
+		rcfg = find_radio_config(flash_limit, bcfg);
+
+	if (!rcfg)
+		return -ENODEV;
+
+	radio_config = board_config + 0x100 + ((rcfg - bcfg) & 0xfff);
+	printk("Radio config found at offset 0x%x(0x%x)\n", rcfg - bcfg, radio_config - board_config);
+	rcfg_size = BOARD_CONFIG_BUFSZ - (radio_config - board_config);
+	memcpy(radio_config, rcfg, rcfg_size);
+
+	return 0;
+}
+
+void __init serial_setup(unsigned long mapbase, unsigned int uartclk)
+{
+	struct uart_port s;
+
+	memset(&s, 0, sizeof(s));
+
+	s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
+	s.iotype = UPIO_MEM;
+	s.irq = AR531X_MISC_IRQ_UART0;
+	s.regshift = 2;
+	s.mapbase = mapbase;
+	s.uartclk = uartclk;
+	s.membase = (void __iomem *)s.mapbase;
+
+	early_serial_setup(&s);
+}
+
+void __init plat_mem_setup(void)
+{
+	DO_AR5312(ar5312_plat_setup();)
+	DO_AR5315(ar5315_plat_setup();)
+
+	/* Disable data watchpoints */
+	write_c0_watchlo0(0);
+}
+
+const char *get_system_type(void)
+{
+	switch (mips_machtype) {
+#ifdef CONFIG_ATHEROS_AR5312
+	case MACH_ATHEROS_AR5312:
+		return "Atheros AR5312";
+
+	case MACH_ATHEROS_AR2312:
+		return "Atheros AR2312";
+
+	case MACH_ATHEROS_AR2313:
+		return "Atheros AR2313";
+#endif
+#ifdef CONFIG_ATHEROS_AR5315
+	case MACH_ATHEROS_AR2315:
+		return "Atheros AR2315";
+	case MACH_ATHEROS_AR2316:
+		return "Atheros AR2316";
+	case MACH_ATHEROS_AR2317:
+		return "Atheros AR2317";
+	case MACH_ATHEROS_AR2318:
+		return "Atheros AR2318";
+#endif
+	}
+	return "Atheros (unknown)";
+}
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24))
+void __init plat_timer_setup(struct irqaction *irq)
+{
+	unsigned int count;
+
+	/* Usually irq is timer_irqaction (timer_interrupt) */
+	setup_irq(AR531X_IRQ_CPU_CLOCK, irq);
+
+	/* to generate the first CPU timer interrupt */
+	count = read_c0_count();
+	write_c0_compare(count + 1000);
+}
+#endif
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	DO_AR5312(ar5312_irq_dispatch();)
+	DO_AR5315(ar5315_irq_dispatch();)
+}
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24))
+void (*board_time_init)(void);
+void __init plat_time_init(void) {
+    board_time_init();
+}
+#endif
+
+void __init arch_init_irq(void)
+{
+	clear_c0_status(ST0_IM);
+	mips_cpu_irq_init();
+
+	/* Initialize interrupt controllers */
+	DO_AR5312(ar5312_misc_intr_init(AR531X_MISC_IRQ_BASE);)
+	DO_AR5315(ar5315_misc_intr_init(AR531X_MISC_IRQ_BASE);)
+}
+
+static int __init ar531x_register_gpiodev(void)
+{
+	static struct resource res = {
+		.start = 0xFFFFFFFF,
+	};
+	struct platform_device *pdev;
+
+	printk(KERN_INFO "ar531x: Registering GPIODEV device\n");
+
+	pdev = platform_device_register_simple("GPIODEV", 0, &res, 1);
+
+	if (!pdev) {
+		printk(KERN_ERR "ar531x: GPIODEV init failed\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+device_initcall(ar531x_register_gpiodev);