| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * FSL SoC setup code |
| * |
| * Maintained by Kumar Gala (see MAINTAINERS for contact information) |
| * |
| * 2006 (c) MontaVista Software, Inc. |
| * Vitaly Bordug <vbordug@ru.mvista.com> |
| */ |
| |
| #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/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 |