diff options
Diffstat (limited to 'target/linux/atheros/files/arch/mips/atheros/ar5315/board.c')
| -rw-r--r-- | target/linux/atheros/files/arch/mips/atheros/ar5315/board.c | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c b/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c deleted file mode 100644 index 6ee75a966..000000000 --- a/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c +++ /dev/null @@ -1,414 +0,0 @@ -/* - * 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/reboot.h> -#include <linux/delay.h> -#include <asm/bootinfo.h> -#include <asm/reboot.h> -#include <asm/time.h> -#include <asm/irq.h> -#include <asm/io.h> -#include <ar531x.h> -#include <linux/leds.h> -#include <asm/gpio.h> - -static int is_5315 = 0; - -static struct resource ar5315_eth_res[] = { - { - .name = "eth0_membase", - .flags = IORESOURCE_MEM, - .start = AR5315_ENET0, - .end = AR5315_ENET0 + 0x2000, - }, - { - .name = "eth0_irq", - .flags = IORESOURCE_IRQ, - .start = AR5315_IRQ_ENET0_INTRS, - .end = AR5315_IRQ_ENET0_INTRS, - }, -}; - -static struct ar531x_eth ar5315_eth_data = { - .phy = 1, - .mac = 0, - .reset_base = AR5315_RESET, - .reset_mac = AR5315_RESET_ENET0, - .reset_phy = AR5315_RESET_EPHY0, - .phy_base = AR5315_ENET0 -}; - -static struct platform_device ar5315_eth = { - .id = 0, - .name = "ar531x-eth", - .dev.platform_data = &ar5315_eth_data, - .resource = ar5315_eth_res, - .num_resources = ARRAY_SIZE(ar5315_eth_res) -}; - -static struct platform_device ar5315_wmac = { - .id = 0, - .name = "ar531x-wmac", - /* FIXME: add resources */ -}; - -static struct resource ar5315_spiflash_res[] = { - { - .name = "flash_base", - .flags = IORESOURCE_MEM, - .start = KSEG1ADDR(AR5315_SPI_READ), - .end = KSEG1ADDR(AR5315_SPI_READ) + 0x800000, - }, - { - .name = "flash_regs", - .flags = IORESOURCE_MEM, - .start = 0x11300000, - .end = 0x11300012, - }, -}; - -static struct platform_device ar5315_spiflash = { - .id = 0, - .name = "spiflash", - .resource = ar5315_spiflash_res, - .num_resources = ARRAY_SIZE(ar5315_spiflash_res) -}; - -#ifdef CONFIG_LEDS_GPIO -static struct gpio_led ar5315_leds[8]; - -static struct gpio_led_platform_data ar5315_led_data = { - .num_leds = ARRAY_SIZE(ar5315_leds), - .leds = (void *) ar5315_leds, -}; - -static struct platform_device ar5315_gpio_leds = { - .name = "leds-gpio", - .id = -1, - .dev = { - .platform_data = (void *) &ar5315_led_data, - } -}; -#endif - -static struct platform_device ar5315_wdt = -{ - .id = 0, - .name = "ar2315_wdt", -}; - -static __initdata struct platform_device *ar5315_devs[6]; - -static void *flash_regs; - -static inline __u32 spiflash_regread32(int reg) -{ - volatile __u32 *data = (__u32 *)(flash_regs + reg); - - return (*data); -} - -static inline void spiflash_regwrite32(int reg, __u32 data) -{ - volatile __u32 *addr = (__u32 *)(flash_regs + reg); - - *addr = data; -} - -#define SPI_FLASH_CTL 0x00 -#define SPI_FLASH_OPCODE 0x04 -#define SPI_FLASH_DATA 0x08 - -static __u8 spiflash_probe(void) -{ - __u32 reg; - - do { - reg = spiflash_regread32(SPI_FLASH_CTL); - } while (reg & SPI_CTL_BUSY); - - spiflash_regwrite32(SPI_FLASH_OPCODE, 0xab); - - reg = (reg & ~SPI_CTL_TX_RX_CNT_MASK) | 4 | - (1 << 4) | SPI_CTL_START; - - spiflash_regwrite32(SPI_FLASH_CTL, reg); - - do { - reg = spiflash_regread32(SPI_FLASH_CTL); - } while (reg & SPI_CTL_BUSY); - - reg = (__u32) spiflash_regread32(SPI_FLASH_DATA); - reg &= 0xff; - - return (u8) reg; -} - - -#define STM_8MBIT_SIGNATURE 0x13 -#define STM_16MBIT_SIGNATURE 0x14 -#define STM_32MBIT_SIGNATURE 0x15 -#define STM_64MBIT_SIGNATURE 0x16 -#define STM_128MBIT_SIGNATURE 0x17 - - -static char __init *ar5315_flash_limit(void) -{ - u8 sig; - u32 flash_size = 0; - - /* probe the flash chip size */ - flash_regs = ioremap_nocache(ar5315_spiflash_res[1].start, ar5315_spiflash_res[1].end - ar5315_spiflash_res[1].start); - sig = spiflash_probe(); - iounmap(flash_regs); - - switch(sig) { - case STM_8MBIT_SIGNATURE: - flash_size = 0x00100000; - break; - case STM_16MBIT_SIGNATURE: - flash_size = 0x00200000; - break; - case STM_32MBIT_SIGNATURE: - flash_size = 0x00400000; - break; - case STM_64MBIT_SIGNATURE: - flash_size = 0x00800000; - break; - case STM_128MBIT_SIGNATURE: - flash_size = 0x01000000; - break; - } - - ar5315_spiflash_res[0].end = ar5315_spiflash_res[0].start + flash_size; - return (char *) ar5315_spiflash_res[0].end; -} - -int __init ar5315_init_devices(void) -{ - struct ar531x_config *config; - struct ar531x_boarddata *bcfg; - int dev = 0; -#ifdef CONFIG_LEDS_GPIO - int i; - char *tmp; -#endif - - if (!is_5315) - return 0; - - /* Find board configuration */ - ar531x_find_config(ar5315_flash_limit()); - bcfg = (struct ar531x_boarddata *) board_config; - - config = (struct ar531x_config *) kzalloc(sizeof(struct ar531x_config), GFP_KERNEL); - config->board = board_config; - config->radio = radio_config; - config->unit = 0; - config->tag = (u_int16_t) (sysRegRead(AR5315_SREV) & AR5315_REV_CHIP); - - ar5315_eth_data.board_config = board_config; - ar5315_eth_data.macaddr = bcfg->enet0Mac; - ar5315_wmac.dev.platform_data = config; - - ar5315_devs[dev++] = &ar5315_eth; - ar5315_devs[dev++] = &ar5315_wmac; - ar5315_devs[dev++] = &ar5315_spiflash; - ar5315_devs[dev++] = &ar5315_wdt; - -#ifdef CONFIG_LEDS_GPIO - ar5315_led_data.num_leds = 0; - for(i = 1; i < 8; i++) - { - if((i != AR5315_RESET_GPIO) && (i != bcfg->resetConfigGpio)) - { - if(i == bcfg->sysLedGpio) - { - tmp = kstrdup("wlan", GFP_KERNEL); - } else { - tmp = kmalloc(6, GFP_KERNEL); - if(tmp) - sprintf((char*)tmp, "gpio%d", i); - } - if(tmp) - { - ar5315_leds[ar5315_led_data.num_leds].name = tmp; - ar5315_leds[ar5315_led_data.num_leds].gpio = i; - ar5315_leds[ar5315_led_data.num_leds].active_low = 0; - ar5315_led_data.num_leds++; - } else { - printk("failed to alloc led string\n"); - continue; - } - } - } - ar5315_devs[dev++] = &ar5315_gpio_leds; -#endif - - return platform_add_devices(ar5315_devs, dev); -} - -static void ar5315_halt(void) -{ - while (1); -} - -static void ar5315_power_off(void) -{ - ar5315_halt(); -} - - -static void ar5315_restart(char *command) -{ - void (*mips_reset_vec)(void) = (void *) 0xbfc00000; - - /* reset the system */ - sysRegWrite(AR5315_COLD_RESET,AR5317_RESET_SYSTEM); - - /* Cold reset does not work on the AR2315/6, use the GPIO reset bits a workaround. - * give it some time to attempt a gpio based hardware reset - * (atheros reference design workaround) */ - gpio_direction_output(AR5315_RESET_GPIO, 0); - mdelay(100); - - /* Some boards (e.g. Senao EOC-2610) don't implement the reset logic - * workaround. Attempt to jump to the mips reset location - - * the boot loader itself might be able to recover the system */ - mips_reset_vec(); -} - - -/* - * This table is indexed by bits 5..4 of the CLOCKCTL1 register - * to determine the predevisor value. - */ -static int __initdata CLOCKCTL1_PREDIVIDE_TABLE[4] = { - 1, - 2, - 4, - 5 -}; - -static int __initdata PLLC_DIVIDE_TABLE[5] = { - 2, - 3, - 4, - 6, - 3 -}; - -static unsigned int __init -ar5315_sys_clk(unsigned int clockCtl) -{ - unsigned int pllcCtrl,cpuDiv; - unsigned int pllcOut,refdiv,fdiv,divby2; - unsigned int clkDiv; - - pllcCtrl = sysRegRead(AR5315_PLLC_CTL); - refdiv = (pllcCtrl & PLLC_REF_DIV_M) >> PLLC_REF_DIV_S; - refdiv = CLOCKCTL1_PREDIVIDE_TABLE[refdiv]; - fdiv = (pllcCtrl & PLLC_FDBACK_DIV_M) >> PLLC_FDBACK_DIV_S; - divby2 = (pllcCtrl & PLLC_ADD_FDBACK_DIV_M) >> PLLC_ADD_FDBACK_DIV_S; - divby2 += 1; - pllcOut = (40000000/refdiv)*(2*divby2)*fdiv; - - - /* clkm input selected */ - switch(clockCtl & CPUCLK_CLK_SEL_M) { - case 0: - case 1: - clkDiv = PLLC_DIVIDE_TABLE[(pllcCtrl & PLLC_CLKM_DIV_M) >> PLLC_CLKM_DIV_S]; - break; - case 2: - clkDiv = PLLC_DIVIDE_TABLE[(pllcCtrl & PLLC_CLKC_DIV_M) >> PLLC_CLKC_DIV_S]; - break; - default: - pllcOut = 40000000; - clkDiv = 1; - break; - } - cpuDiv = (clockCtl & CPUCLK_CLK_DIV_M) >> CPUCLK_CLK_DIV_S; - cpuDiv = cpuDiv * 2 ?: 1; - return (pllcOut/(clkDiv * cpuDiv)); -} - -static inline unsigned int ar5315_cpu_frequency(void) -{ - return ar5315_sys_clk(sysRegRead(AR5315_CPUCLK)); -} - -static inline unsigned int ar5315_apb_frequency(void) -{ - return ar5315_sys_clk(sysRegRead(AR5315_AMBACLK)); -} - -static void __init ar5315_time_init(void) -{ - mips_hpt_frequency = ar5315_cpu_frequency() / 2; -} - -void __init ar5315_prom_init(void) -{ - u32 memsize, memcfg, devid; - - is_5315 = 1; - memcfg = sysRegRead(AR5315_MEM_CFG); - memsize = 1 + ((memcfg & SDRAM_DATA_WIDTH_M) >> SDRAM_DATA_WIDTH_S); - memsize <<= 1 + ((memcfg & SDRAM_COL_WIDTH_M) >> SDRAM_COL_WIDTH_S); - memsize <<= 1 + ((memcfg & SDRAM_ROW_WIDTH_M) >> SDRAM_ROW_WIDTH_S); - memsize <<= 3; - add_memory_region(0, memsize, BOOT_MEM_RAM); - - /* Detect the hardware based on the device ID */ - devid = sysRegRead(AR5315_SREV) & AR5315_REV_CHIP; - switch(devid) { - case 0x90: - case 0x91: - mips_machtype = MACH_ATHEROS_AR2317; - break; - default: - mips_machtype = MACH_ATHEROS_AR2315; - break; - } -} - -void __init ar5315_plat_setup(void) -{ - unsigned int config = read_c0_config(); - - /* Clear any lingering AHB errors */ - write_c0_config(config & ~0x3); - sysRegWrite(AR5315_AHB_ERR0,AHB_ERROR_DET); - sysRegRead(AR5315_AHB_ERR1); - sysRegWrite(AR5315_WDC, WDC_IGNORE_EXPIRATION); - - board_time_init = ar5315_time_init; - - _machine_restart = ar5315_restart; - _machine_halt = ar5315_halt; - pm_power_off = ar5315_power_off; - - serial_setup(KSEG1ADDR(AR5315_UART0), ar5315_apb_frequency()); -} - -arch_initcall(ar5315_init_devices); |