/* SPDX-License-Identifier: GPL-2.0-only */ #include <multiboot_tables.h> #include "coreinfo.h" #if CONFIG(MODULE_MULTIBOOT) #define MAX_MEMORY_COUNT 10 static struct { int mem_count; struct { u64 start; u64 size; int type; } range[MAX_MEMORY_COUNT]; } cb_info; static int tables_good = 0; static int multiboot_module_redraw(WINDOW *win) { int row = 2; int i; print_module_title(win, "Multiboot Tables"); if (tables_good == 0) { mvwprintw(win, row++, 1, "No multiboot tables were found"); return 0; } row++; mvwprintw(win, row++, 1, "-- Memory Map --"); for (i = 0; i < cb_info.mem_count; i++) { if (cb_info.range[i].type == 1) mvwprintw(win, row++, 3, " RAM: "); else mvwprintw(win, row++, 3, "Reserved: "); wprintw(win, "%16.16llx - %16.16llx", cb_info.range[i].start, cb_info.range[i].start + cb_info.range[i].size - 1); } return 0; } static void parse_memory(struct multiboot_header *table) { u8 *start = (u8 *) phys_to_virt(table->mmap_addr); u8 *ptr = start; int i = 0; cb_info.mem_count = 0; while(ptr < (start + table->mmap_length)) { struct multiboot_mmap *mmap = (struct multiboot_mmap *) ptr; cb_info.range[i].start = mmap->addr; cb_info.range[i].size = mmap->length; cb_info.range[i].type = mmap->type; if (++cb_info.mem_count == MAX_MEMORY_COUNT) return; ptr += (mmap->size + sizeof(mmap->size)); i++; } } static void parse_header(unsigned long addr) { struct multiboot_header *table = (struct multiboot_header *) addr; if (table->flags & MULTIBOOT_FLAGS_MMAP) parse_memory(table); } static int multiboot_module_init(void) { unsigned long mbaddr; tables_good = sysinfo_have_multiboot(&mbaddr); parse_header(mbaddr); return tables_good ? 0 : -1; } struct coreinfo_module multiboot_module = { .name = "Multiboot", .init = multiboot_module_init, .redraw = multiboot_module_redraw, }; #else struct coreinfo_module multiboot_module = { }; #endif /* CONFIG_MODULE_MULTIBOOT */