1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. 4 * Chen Liqin <liqin.chen@sunplusct.com> 5 * Lennox Wu <lennox.wu@sunplusct.com> 6 * Copyright (C) 2012 Regents of the University of California 7 */ 8 9 #include <linux/init.h> 10 #include <linux/mm.h> 11 #include <linux/memblock.h> 12 #include <linux/sched.h> 13 #include <linux/console.h> 14 #include <linux/screen_info.h> 15 #include <linux/of_fdt.h> 16 #include <linux/of_platform.h> 17 #include <linux/sched/task.h> 18 #include <linux/swiotlb.h> 19 20 #include <asm/setup.h> 21 #include <asm/sections.h> 22 #include <asm/pgtable.h> 23 #include <asm/smp.h> 24 #include <asm/tlbflush.h> 25 #include <asm/thread_info.h> 26 27 #ifdef CONFIG_DUMMY_CONSOLE 28 struct screen_info screen_info = { 29 .orig_video_lines = 30, 30 .orig_video_cols = 80, 31 .orig_video_mode = 0, 32 .orig_video_ega_bx = 0, 33 .orig_video_isVGA = 1, 34 .orig_video_points = 8 35 }; 36 #endif 37 38 /* The lucky hart to first increment this variable will boot the other cores */ 39 atomic_t hart_lottery; 40 unsigned long boot_cpu_hartid; 41 42 void __init parse_dtb(void) 43 { 44 if (early_init_dt_scan(dtb_early_va)) 45 return; 46 47 pr_err("No DTB passed to the kernel\n"); 48 #ifdef CONFIG_CMDLINE_FORCE 49 strlcpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE); 50 pr_info("Forcing kernel command line to: %s\n", boot_command_line); 51 #endif 52 } 53 54 void __init setup_arch(char **cmdline_p) 55 { 56 init_mm.start_code = (unsigned long) _stext; 57 init_mm.end_code = (unsigned long) _etext; 58 init_mm.end_data = (unsigned long) _edata; 59 init_mm.brk = (unsigned long) _end; 60 61 *cmdline_p = boot_command_line; 62 63 parse_early_param(); 64 65 setup_bootmem(); 66 paging_init(); 67 unflatten_device_tree(); 68 69 #ifdef CONFIG_SWIOTLB 70 swiotlb_init(1); 71 #endif 72 73 #ifdef CONFIG_SMP 74 setup_smp(); 75 #endif 76 77 #ifdef CONFIG_DUMMY_CONSOLE 78 conswitchp = &dummy_con; 79 #endif 80 81 riscv_fill_hwcap(); 82 } 83