+++ /dev/null
-/*
- * 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 <asm/bootinfo.h>
-#include <asm/irq_cpu.h>
-#include <asm/io.h>
-#include "ar531x.h"
-
-char *board_config, *radio_config;
-
-static u8 *find_board_config(char *flash_limit)
-{
- char *addr;
- int found = 0;
-
- for (addr = (char *) (flash_limit - 0x1000);
- addr >= (char *) (flash_limit - 0x30000);
- addr -= 0x1000) {
-
- if ( *(int *)addr == 0x35333131) {
- /* config magic found */
- found = 1;
- break;
- }
- }
-
- if (!found) {
- printk("WARNING: No board configuration data found!\n");
- addr = NULL;
- }
-
- return addr;
-}
-
-static u8 *find_radio_config(char *flash_limit, char *board_config)
-{
- int dataFound;
- u32 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 = (u32) board_config + 0x1000;
- (radio_config < (u32) flash_limit);
- radio_config += 0x1000) {
- if (*(int *)radio_config != 0xffffffff) {
- dataFound = 1;
- break;
- }
- }
-
-#ifdef CONFIG_ATHEROS_AR5315
- if (!dataFound) { /* AR2316 relocates radio config to new location */
- for (radio_config = (u32) board_config + 0xf8;
- (radio_config < (u32) flash_limit - 0x1000 + 0xf8);
- radio_config += 0x1000) {
- if (*(int *)radio_config != 0xffffffff) {
- 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)
-{
- 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);
- if (!bcfg)
- return -ENODEV;
-
- board_config = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
- memcpy(board_config, bcfg, 0x100);
-
- /* Radio config starts 0x100 bytes after board config, regardless
- * of what the physical layout on the flash chip looks like */
-
- 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 - ((rcfg - bcfg) & (BOARD_CONFIG_BUFSZ - 1));
- 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)";
-}
-
-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);
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
- DO_AR5312(ar5312_irq_dispatch();)
- DO_AR5315(ar5315_irq_dispatch();)
-}
-
-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);)
-}
projects / openwrt.git / blobdiff