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/* 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 */
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