diff options
Diffstat (limited to 'target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/board.c')
-rw-r--r-- | target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/board.c | 449 |
1 files changed, 0 insertions, 449 deletions
diff --git a/target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/board.c b/target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/board.c deleted file mode 100644 index 21073dbbbb..0000000000 --- a/target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/board.c +++ /dev/null @@ -1,449 +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/mtd/physmap.h> -#include <linux/platform_device.h> -#include <linux/kernel.h> -#include <linux/reboot.h> -#include <asm/bootinfo.h> -#include <asm/reboot.h> -#include <asm/time.h> -#include <asm/irq.h> -#include <asm/io.h> -#include "../ar531x.h" - -#define NO_PHY 0x1f - -static int is_5312 = 0; -static struct platform_device *ar5312_devs[5]; - -static struct resource ar5312_eth0_res[] = { - { - .name = "eth0_membase", - .flags = IORESOURCE_MEM, - .start = KSEG1ADDR(AR531X_ENET0), - .end = KSEG1ADDR(AR531X_ENET0 + 0x2000), - }, - { - .name = "eth0_irq", - .flags = IORESOURCE_IRQ, - .start = AR5312_IRQ_ENET0_INTRS, - .end = AR5312_IRQ_ENET0_INTRS, - }, -}; -static struct ar531x_eth ar5312_eth0_data = { - .phy = NO_PHY, - .mac = 0, - .reset_base = AR531X_RESET, - .reset_mac = AR531X_RESET_ENET0, - .reset_phy = AR531X_RESET_EPHY0, - .phy_base = KSEG1ADDR(AR531X_ENET0), -}; - -static struct resource ar5312_eth1_res[] = { - { - .name = "eth1_membase", - .flags = IORESOURCE_MEM, - .start = KSEG1ADDR(AR531X_ENET1), - .end = KSEG1ADDR(AR531X_ENET1 + 0x2000), - }, - { - .name = "eth1_irq", - .flags = IORESOURCE_IRQ, - .start = AR5312_IRQ_ENET1_INTRS, - .end = AR5312_IRQ_ENET1_INTRS, - }, -}; -static struct ar531x_eth ar5312_eth1_data = { - .phy = NO_PHY, - .mac = 1, - .reset_base = AR531X_RESET, - .reset_mac = AR531X_RESET_ENET1, - .reset_phy = AR531X_RESET_EPHY1, - .phy_base = KSEG1ADDR(AR531X_ENET1), -}; - -static struct platform_device ar5312_eth[] = { - { - .id = 0, - .name = "ar531x-eth", - .dev.platform_data = &ar5312_eth0_data, - .resource = ar5312_eth0_res, - .num_resources = ARRAY_SIZE(ar5312_eth0_res) - }, - { - .id = 1, - .name = "ar531x-eth", - .dev.platform_data = &ar5312_eth1_data, - .resource = ar5312_eth1_res, - .num_resources = ARRAY_SIZE(ar5312_eth1_res) - }, -}; - - -/* - * AR2312/3 ethernet uses the PHY of ENET0, but the MAC - * of ENET1. Atheros calls it 'twisted' for a reason :) - */ -static struct resource ar231x_eth0_res[] = { - { - .name = "eth0_membase", - .flags = IORESOURCE_MEM, - .start = KSEG1ADDR(AR531X_ENET1), - .end = KSEG1ADDR(AR531X_ENET1 + 0x2000), - }, - { - .name = "eth0_irq", - .flags = IORESOURCE_IRQ, - .start = AR5312_IRQ_ENET1_INTRS, - .end = AR5312_IRQ_ENET1_INTRS, - }, -}; -static struct ar531x_eth ar231x_eth0_data = { - .phy = 1, - .mac = 1, - .reset_base = AR531X_RESET, - .reset_mac = AR531X_RESET_ENET1, - .reset_phy = AR531X_RESET_EPHY1, - .phy_base = KSEG1ADDR(AR531X_ENET0), -}; -static struct platform_device ar231x_eth0 = { - .id = 0, - .name = "ar531x-eth", - .dev.platform_data = &ar231x_eth0_data, - .resource = ar231x_eth0_res, - .num_resources = ARRAY_SIZE(ar231x_eth0_res) -}; - - -static struct platform_device ar5312_wmac[] = { - { - .id = 0, - .name = "ar531x-wmac", - }, - { - .id = 1, - .name = "ar531x-wmac", - }, -}; - -static struct physmap_flash_data ar5312_flash_data = { - .width = 2, -}; - -static struct resource ar5312_flash_resource = { - .start = AR531X_FLASH, - .end = AR531X_FLASH + 0x400000 - 1, - .flags = IORESOURCE_MEM, -}; - -static struct platform_device ar5312_physmap_flash = { - .name = "physmap-flash", - .id = 0, - .dev = { - .platform_data = &ar5312_flash_data, - }, - .num_resources = 1, - .resource = &ar5312_flash_resource, -}; - - -/* - * NB: This mapping size is larger than the actual flash size, - * but this shouldn't be a problem here, because the flash - * will simply be mapped multiple times. - */ -static char __init *ar5312_flash_limit(void) -{ - u32 ctl; - /* - * Configure flash bank 0. - * Assume 8M window size. Flash will be aliased if it's smaller - */ - ctl = FLASHCTL_E | - FLASHCTL_AC_8M | - FLASHCTL_RBLE | - (0x01 << FLASHCTL_IDCY_S) | - (0x07 << FLASHCTL_WST1_S) | - (0x07 << FLASHCTL_WST2_S) | - (sysRegRead(AR531X_FLASHCTL0) & FLASHCTL_MW); - - sysRegWrite(AR531X_FLASHCTL0, ctl); - - /* Disable other flash banks */ - sysRegWrite(AR531X_FLASHCTL1, - sysRegRead(AR531X_FLASHCTL1) & ~(FLASHCTL_E | FLASHCTL_AC)); - - sysRegWrite(AR531X_FLASHCTL2, - sysRegRead(AR531X_FLASHCTL2) & ~(FLASHCTL_E | FLASHCTL_AC)); - - return (char *) KSEG1ADDR(AR531X_FLASH + 0x800000); -} - -static struct ar531x_config __init *init_wmac(int unit) -{ - struct ar531x_config *config; - - config = (struct ar531x_config *) kzalloc(sizeof(struct ar531x_config), GFP_KERNEL); - config->board = board_config; - config->radio = radio_config; - config->unit = unit; - config->tag = (u_int16_t) ((sysRegRead(AR531X_REV) >> AR531X_REV_WMAC_MIN_S) & AR531X_REV_CHIP); - - return config; -} - -int __init ar5312_init_devices(void) -{ - struct ar531x_boarddata *bcfg; - char *radio, *c; - int dev = 0; - uint32_t fctl = 0; - - if (!is_5312) - return 0; - - /* Locate board/radio config data */ - ar531x_find_config(ar5312_flash_limit()); - bcfg = (struct ar531x_boarddata *) board_config; - - - /* - * Chip IDs and hardware detection for some Atheros - * models are really broken! - * - * Atheros uses a disabled WMAC0 and Silicon ID of AR5312 - * as indication for AR2312, which is otherwise - * indistinguishable from the real AR5312. - */ - if (radio_config) { - radio = radio_config + AR531X_RADIO_MASK_OFF; - if ((*((u32 *) radio) & AR531X_RADIO0_MASK) == 0) - bcfg->config |= BD_ISCASPER; - } else - radio = NULL; - - /* AR2313 has CPU minor rev. 10 */ - if ((current_cpu_data.processor_id & 0xff) == 0x0a) - mips_machtype = MACH_ATHEROS_AR2313; - - /* AR2312 shares the same Silicon ID as AR5312 */ - else if (bcfg->config & BD_ISCASPER) - mips_machtype = MACH_ATHEROS_AR2312; - - /* Everything else is probably AR5312 or compatible */ - else - mips_machtype = MACH_ATHEROS_AR5312; - - ar5312_eth0_data.board_config = board_config; - ar5312_eth1_data.board_config = board_config; - - /* fixup flash width */ - fctl = sysRegRead(AR531X_FLASHCTL) & FLASHCTL_MW; - switch (fctl) { - case FLASHCTL_MWx16: - ar5312_flash_data.width = 2; - break; - case FLASHCTL_MWx8: - default: - ar5312_flash_data.width = 1; - break; - } - - ar5312_devs[dev++] = &ar5312_physmap_flash; - - if (!memcmp(bcfg->enet0Mac, "\xff\xff\xff\xff\xff\xff", 6)) - memcpy(bcfg->enet0Mac, bcfg->enet1Mac, 6); - - if (memcmp(bcfg->enet0Mac, bcfg->enet1Mac, 6) == 0) { - /* ENET0 and ENET1 have the same mac. - * Increment the one from ENET1 */ - c = bcfg->enet1Mac + 5; - while ((c >= (char *) bcfg->enet1Mac) && !(++(*c))) - c--; - } - - switch(mips_machtype) { - case MACH_ATHEROS_AR5312: - ar5312_eth0_data.macaddr = bcfg->enet0Mac; - ar5312_eth1_data.macaddr = bcfg->enet1Mac; - ar5312_devs[dev++] = &ar5312_eth[0]; - ar5312_devs[dev++] = &ar5312_eth[1]; - break; - case MACH_ATHEROS_AR2312: - case MACH_ATHEROS_AR2313: - ar231x_eth0_data.macaddr = bcfg->enet0Mac; - ar5312_devs[dev++] = &ar231x_eth0; - ar5312_flash_data.width = 1; - break; - } - - if (radio) { - if (mips_machtype == MACH_ATHEROS_AR5312) { - if (*((u32 *) radio) & AR531X_RADIO0_MASK) { - ar5312_wmac[0].dev.platform_data = init_wmac(0); - ar5312_devs[dev++] = &ar5312_wmac[0]; - } - } - if (*((u32 *) radio) & AR531X_RADIO1_MASK) { - ar5312_wmac[1].dev.platform_data = init_wmac(1); - ar5312_devs[dev++] = &ar5312_wmac[1]; - } - } - - return platform_add_devices(ar5312_devs, dev); -} - - -static void ar5312_halt(void) -{ - while (1); -} - -static void ar5312_power_off(void) -{ - ar5312_halt(); -} - - -static void ar5312_restart(char *command) -{ - /* reset the system */ - for(;;) sysRegWrite(AR531X_RESET, AR531X_RESET_SYSTEM); -} - - -/* - * 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 unsigned int __init ar5312_cpu_frequency(void) -{ - unsigned int result; - unsigned int predivide_mask, predivide_shift; - unsigned int multiplier_mask, multiplier_shift; - unsigned int clockCtl1, preDivideSelect, preDivisor, multiplier; - unsigned int doubler_mask; - unsigned int wisoc_revision; - - /* Trust the bootrom's idea of cpu frequency. */ - if ((result = sysRegRead(AR5312_SCRATCH))) - return result; - - wisoc_revision = (sysRegRead(AR531X_REV) & AR531X_REV_MAJ) >> AR531X_REV_MAJ_S; - if (wisoc_revision == AR531X_REV_MAJ_AR2313) { - predivide_mask = AR2313_CLOCKCTL1_PREDIVIDE_MASK; - predivide_shift = AR2313_CLOCKCTL1_PREDIVIDE_SHIFT; - multiplier_mask = AR2313_CLOCKCTL1_MULTIPLIER_MASK; - multiplier_shift = AR2313_CLOCKCTL1_MULTIPLIER_SHIFT; - doubler_mask = AR2313_CLOCKCTL1_DOUBLER_MASK; - } else { /* AR5312 and AR2312 */ - predivide_mask = AR5312_CLOCKCTL1_PREDIVIDE_MASK; - predivide_shift = AR5312_CLOCKCTL1_PREDIVIDE_SHIFT; - multiplier_mask = AR5312_CLOCKCTL1_MULTIPLIER_MASK; - multiplier_shift = AR5312_CLOCKCTL1_MULTIPLIER_SHIFT; - doubler_mask = AR5312_CLOCKCTL1_DOUBLER_MASK; - } - - /* - * Clocking is derived from a fixed 40MHz input clock. - * - * cpuFreq = InputClock * MULT (where MULT is PLL multiplier) - * sysFreq = cpuFreq / 4 (used for APB clock, serial, - * flash, Timer, Watchdog Timer) - * - * cntFreq = cpuFreq / 2 (use for CPU count/compare) - * - * So, for example, with a PLL multiplier of 5, we have - * - * cpuFreq = 200MHz - * sysFreq = 50MHz - * cntFreq = 100MHz - * - * We compute the CPU frequency, based on PLL settings. - */ - - clockCtl1 = sysRegRead(AR5312_CLOCKCTL1); - preDivideSelect = (clockCtl1 & predivide_mask) >> predivide_shift; - preDivisor = CLOCKCTL1_PREDIVIDE_TABLE[preDivideSelect]; - multiplier = (clockCtl1 & multiplier_mask) >> multiplier_shift; - - if (clockCtl1 & doubler_mask) { - multiplier = multiplier << 1; - } - return (40000000 / preDivisor) * multiplier; -} - -static inline int ar5312_sys_frequency(void) -{ - return ar5312_cpu_frequency() / 4; -} - -static void __init ar5312_time_init(void) -{ - mips_hpt_frequency = ar5312_cpu_frequency() / 2; -} - - -void __init ar5312_prom_init(void) -{ - u32 memsize, memcfg, bank0AC, bank1AC; - - is_5312 = 1; - - /* Detect memory size */ - memcfg = sysRegRead(AR531X_MEM_CFG1); - bank0AC = (memcfg & MEM_CFG1_AC0) >> MEM_CFG1_AC0_S; - bank1AC = (memcfg & MEM_CFG1_AC1) >> MEM_CFG1_AC1_S; - memsize = (bank0AC ? (1 << (bank0AC+1)) : 0) - + (bank1AC ? (1 << (bank1AC+1)) : 0); - memsize <<= 20; - add_memory_region(0, memsize, BOOT_MEM_RAM); - - /* Initialize it to AR5312 for now. Real detection will be done - * in ar5312_init_devices() */ - mips_machtype = MACH_ATHEROS_AR5312; -} - -void __init ar5312_plat_setup(void) -{ - /* Clear any lingering AHB errors */ - sysRegRead(AR531X_PROCADDR); - sysRegRead(AR531X_DMAADDR); - sysRegWrite(AR531X_WD_CTRL, AR531X_WD_CTRL_IGNORE_EXPIRATION); - - board_time_init = ar5312_time_init; - - _machine_restart = ar5312_restart; - _machine_halt = ar5312_halt; - pm_power_off = ar5312_power_off; - - serial_setup(KSEG1ADDR(AR531X_UART0), ar5312_sys_frequency()); -} - -arch_initcall(ar5312_init_devices); |