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/* SPDX-License-Identifier: GPL-2.0-only */
#include "coreinfo.h"
#include <coreboot_tables.h>
#if CONFIG(MODULE_COREBOOT)
#define MAX_MEMORY_COUNT 5
static struct {
int mem_count;
int mem_actual;
struct cb_memory_range range[MAX_MEMORY_COUNT];
char vendor[32];
char part[32];
char strings[10][64];
struct cb_serial serial;
struct cb_console console;
} cb_info;
static int tables_good = 0;
static int coreboot_module_redraw(WINDOW *win)
{
int row = 2;
int i;
print_module_title(win, "coreboot Tables");
if (tables_good) {
mvwprintw(win, row++, 1, "No coreboot tables were found");
return 0;
}
mvwprintw(win, row++, 1, "Vendor: %s", cb_info.vendor);
mvwprintw(win, row++, 1, "Part: %s", cb_info.part);
mvwprintw(win, row++, 1, "Version: %s%s",
cb_info.strings[CB_TAG_VERSION - 0x4],
cb_info.strings[CB_TAG_EXTRA_VERSION - 0x4]);
mvwprintw(win, row++, 1, "Built: %s (%s@%s.%s)",
cb_info.strings[CB_TAG_BUILD - 0x4],
cb_info.strings[CB_TAG_COMPILE_BY - 0x04],
cb_info.strings[CB_TAG_COMPILE_HOST - 0x04],
cb_info.strings[CB_TAG_COMPILE_DOMAIN - 0x04]);
if (cb_info.serial.tag != 0x0) {
mvwprintw(win, row++, 1, "Serial Port I/O base: 0x%x",
cb_info.serial.baseaddr);
}
if (cb_info.console.tag != 0x0) {
mvwprintw(win, row++, 1, "Default Output Console: ");
switch (cb_info.console.type) {
case CB_TAG_CONSOLE_SERIAL8250:
wprintw(win, "Serial Port");
break;
case CB_TAG_CONSOLE_VGA:
wprintw(win, "VGA");
break;
case CB_TAG_CONSOLE_BTEXT:
wprintw(win, "BTEXT");
break;
case CB_TAG_CONSOLE_LOGBUF:
wprintw(win, "Log Buffer");
break;
case CB_TAG_CONSOLE_SROM:
wprintw(win, "Serial ROM");
break;
case CB_TAG_CONSOLE_EHCI:
wprintw(win, "USB Debug");
break;
}
}
row++;
mvwprintw(win, row++, 1, "-- Memory Map --");
for (i = 0; i < cb_info.mem_count; i++) {
switch (cb_info.range[i].type) {
case CB_MEM_RAM:
mvwprintw(win, row++, 3, " RAM: ");
break;
case CB_MEM_RESERVED:
mvwprintw(win, row++, 3, "Reserved: ");
break;
case CB_MEM_TABLE:
mvwprintw(win, row++, 3, " Table: ");
}
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(unsigned char *ptr)
{
struct cb_memory *mem = (struct cb_memory *)ptr;
int max = (MEM_RANGE_COUNT(mem) > MAX_MEMORY_COUNT)
? MAX_MEMORY_COUNT : MEM_RANGE_COUNT(mem);
int i;
for (i = 0; i < max; i++) {
struct cb_memory_range *range =
(struct cb_memory_range *)MEM_RANGE_PTR(mem, i);
memcpy(&cb_info.range[i], range, sizeof(*range));
}
cb_info.mem_count = max;
cb_info.mem_actual = MEM_RANGE_COUNT(mem);
}
static void parse_mainboard(unsigned char *ptr)
{
struct cb_mainboard *mb = (struct cb_mainboard *)ptr;
strncpy(cb_info.vendor, cb_mb_vendor_string(mb), sizeof(cb_info.vendor) - 1);
strncpy(cb_info.part, cb_mb_part_string(mb), sizeof(cb_info.part) - 1);
}
static void parse_strings(unsigned char *ptr)
{
struct cb_string *string = (struct cb_string *)ptr;
int index = string->tag - CB_TAG_VERSION;
strncpy(cb_info.strings[index], (const char *)string->string, 63);
cb_info.strings[index][63] = 0;
}
static void parse_serial(unsigned char *ptr)
{
memcpy(&cb_info.serial, (struct cb_serial *)ptr,
sizeof(struct cb_serial));
}
static void parse_console(unsigned char *ptr)
{
memcpy(&cb_info.console, (struct cb_console *)ptr,
sizeof(struct cb_console));
}
static int parse_header(void *addr, int len)
{
struct cb_header *header;
unsigned char *ptr = (unsigned char *)addr;
int i;
for (i = 0; i < len; i += 16, ptr += 16) {
header = (struct cb_header *)ptr;
if (!strncmp((const char *)header->signature, "LBIO", 4))
break;
}
/* We walked the entire space and didn't find anything. */
if (i >= len)
return -1;
if (!header->table_bytes)
return 0;
/* FIXME: Check the checksum. */
if (cb_checksum(header, sizeof(*header)))
return -1;
if (cb_checksum((ptr + sizeof(*header)), header->table_bytes)
!= header->table_checksum)
return -1;
/* Now, walk the tables. */
ptr += header->header_bytes;
for (u32 j = 0; j < header->table_entries; j++) {
struct cb_record *rec = (struct cb_record *)ptr;
switch (rec->tag) {
case CB_TAG_FORWARD:
return parse_header((void *)(unsigned long)((struct cb_forward *)rec)->forward, 1);
break;
case CB_TAG_MEMORY:
parse_memory(ptr);
break;
case CB_TAG_MAINBOARD:
parse_mainboard(ptr);
break;
case CB_TAG_VERSION:
case CB_TAG_EXTRA_VERSION:
case CB_TAG_BUILD:
case CB_TAG_COMPILE_TIME:
case CB_TAG_COMPILE_BY:
case CB_TAG_COMPILE_HOST:
case CB_TAG_COMPILE_DOMAIN:
case CB_TAG_COMPILER:
case CB_TAG_LINKER:
case CB_TAG_ASSEMBLER:
parse_strings(ptr);
break;
case CB_TAG_SERIAL:
parse_serial(ptr);
break;
case CB_TAG_CONSOLE:
parse_console(ptr);
break;
default:
break;
}
ptr += rec->size;
}
return 1;
}
static int coreboot_module_init(void)
{
int ret = parse_header((void *)0x00000, 0x1000);
if (ret != 1)
ret = parse_header((void *)0xf0000, 0x1000);
/* Return error if we couldn't find it at either address. */
tables_good = (ret == 1) ? 0 : -1;
return tables_good;
}
struct coreinfo_module coreboot_module = {
.name = "coreboot",
.init = coreboot_module_init,
.redraw = coreboot_module_redraw,
};
#else
struct coreinfo_module coreboot_module = {
};
#endif
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