1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * init.c, Common initialization routines for NEC VR4100 series. 4 * 5 * Copyright (C) 2003-2009 Yoichi Yuasa <yuasa@linux-mips.org> 6 */ 7 #include <linux/init.h> 8 #include <linux/ioport.h> 9 #include <linux/irq.h> 10 #include <linux/string.h> 11 12 #include <asm/bootinfo.h> 13 #include <asm/time.h> 14 #include <asm/vr41xx/irq.h> 15 #include <asm/vr41xx/vr41xx.h> 16 17 #define IO_MEM_RESOURCE_START 0UL 18 #define IO_MEM_RESOURCE_END 0x1fffffffUL 19 iomem_resource_init(void)20static void __init iomem_resource_init(void) 21 { 22 iomem_resource.start = IO_MEM_RESOURCE_START; 23 iomem_resource.end = IO_MEM_RESOURCE_END; 24 } 25 plat_time_init(void)26void __init plat_time_init(void) 27 { 28 unsigned long tclock; 29 30 vr41xx_calculate_clock_frequency(); 31 32 tclock = vr41xx_get_tclock_frequency(); 33 if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 || 34 current_cpu_data.processor_id == PRID_VR4131_REV2_1) 35 mips_hpt_frequency = tclock / 2; 36 else 37 mips_hpt_frequency = tclock / 4; 38 } 39 plat_mem_setup(void)40void __init plat_mem_setup(void) 41 { 42 iomem_resource_init(); 43 44 vr41xx_siu_setup(); 45 } 46 prom_init(void)47void __init prom_init(void) 48 { 49 int argc, i; 50 char **argv; 51 52 argc = fw_arg0; 53 argv = (char **)fw_arg1; 54 55 for (i = 1; i < argc; i++) { 56 strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); 57 if (i < (argc - 1)) 58 strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); 59 } 60 } 61 prom_free_prom_memory(void)62void __init prom_free_prom_memory(void) 63 { 64 } 65