/* * FSL SoC setup code * * Maintained by Kumar Gala (see MAINTAINERS for contact information) * * 2006 (c) MontaVista Software, Inc. * Vitaly Bordug <vbordug@ru.mvista.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/major.h> #include <linux/delay.h> #include <linux/irq.h> #include <linux/export.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/phy.h> #include <linux/spi/spi.h> #include <linux/fsl_devices.h> #include <linux/fs_enet_pd.h> #include <linux/fs_uart_pd.h> #include <linux/reboot.h> #include <linux/atomic.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/time.h> #include <asm/prom.h> #include <asm/machdep.h> #include <sysdev/fsl_soc.h> #include <mm/mmu_decl.h> #include <asm/cpm2.h> #include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */ extern void init_fcc_ioports(struct fs_platform_info*); extern void init_fec_ioports(struct fs_platform_info*); extern void init_smc_ioports(struct fs_uart_platform_info*); static phys_addr_t immrbase = -1; phys_addr_t get_immrbase(void) { struct device_node *soc; if (immrbase != -1) return immrbase; soc = of_find_node_by_type(NULL, "soc"); if (soc) { int size; u32 naddr; const __be32 *prop = of_get_property(soc, "#address-cells", &size); if (prop && size == 4) naddr = be32_to_cpup(prop); else naddr = 2; prop = of_get_property(soc, "ranges", &size); if (prop) immrbase = of_translate_address(soc, prop + naddr); of_node_put(soc); } return immrbase; } EXPORT_SYMBOL(get_immrbase); u32 fsl_get_sys_freq(void) { static u32 sysfreq = -1; struct device_node *soc; if (sysfreq != -1) return sysfreq; soc = of_find_node_by_type(NULL, "soc"); if (!soc) return -1; of_property_read_u32(soc, "clock-frequency", &sysfreq); if (sysfreq == -1 || !sysfreq) of_property_read_u32(soc, "bus-frequency", &sysfreq); of_node_put(soc); return sysfreq; } EXPORT_SYMBOL(fsl_get_sys_freq); #if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE) u32 get_brgfreq(void) { static u32 brgfreq = -1; struct device_node *node; if (brgfreq != -1) return brgfreq; node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); if (node) { of_property_read_u32(node, "clock-frequency", &brgfreq); of_node_put(node); return brgfreq; } /* Legacy device binding -- will go away when no users are left. */ node = of_find_node_by_type(NULL, "cpm"); if (!node) node = of_find_compatible_node(NULL, NULL, "fsl,qe"); if (!node) node = of_find_node_by_type(NULL, "qe"); if (node) { of_property_read_u32(node, "brg-frequency", &brgfreq); if (brgfreq == -1 || !brgfreq) if (!of_property_read_u32(node, "bus-frequency", &brgfreq)) brgfreq /= 2; of_node_put(node); } return brgfreq; } EXPORT_SYMBOL(get_brgfreq); u32 get_baudrate(void) { static u32 fs_baudrate = -1; struct device_node *node; if (fs_baudrate != -1) return fs_baudrate; node = of_find_node_by_type(NULL, "serial"); if (node) { of_property_read_u32(node, "current-speed", &fs_baudrate); of_node_put(node); } return fs_baudrate; } EXPORT_SYMBOL(get_baudrate); #endif /* CONFIG_CPM2 */ #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) static __be32 __iomem *rstcr; static int fsl_rstcr_restart(struct notifier_block *this, unsigned long mode, void *cmd) { local_irq_disable(); /* set reset control register */ out_be32(rstcr, 0x2); /* HRESET_REQ */ return NOTIFY_DONE; } static int __init setup_rstcr(void) { struct device_node *np; static struct notifier_block restart_handler = { .notifier_call = fsl_rstcr_restart, .priority = 128, }; for_each_node_by_name(np, "global-utilities") { if ((of_get_property(np, "fsl,has-rstcr", NULL))) { rstcr = of_iomap(np, 0) + 0xb0; if (!rstcr) { printk (KERN_ERR "Error: reset control " "register not mapped!\n"); } else { register_restart_handler(&restart_handler); } break; } } of_node_put(np); return 0; } arch_initcall(setup_rstcr); #endif #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE) struct platform_diu_data_ops diu_ops; EXPORT_SYMBOL(diu_ops); #endif #ifdef CONFIG_EPAPR_PARAVIRT /* * Restart the current partition * * This function should be assigned to the ppc_md.restart function pointer, * to initiate a partition restart when we're running under the Freescale * hypervisor. */ void __noreturn fsl_hv_restart(char *cmd) { pr_info("hv restart\n"); fh_partition_restart(-1); while (1) ; } /* * Halt the current partition * * This function should be assigned to the pm_power_off and ppc_md.halt * function pointers, to shut down the partition when we're running under * the Freescale hypervisor. */ void __noreturn fsl_hv_halt(void) { pr_info("hv exit\n"); fh_partition_stop(-1); while (1) ; } #endif