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Atmosphere/exosphere/src/exocfg.c

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C

#include <stdint.h>
#include <stdbool.h>
#include "utils.h"
#include "exocfg.h"
#include "mmu.h"
#include "memory_map.h"
#define MAILBOX_BASE (MMIO_GET_DEVICE_ADDRESS(MMIO_DEVID_NXBOOTLOADER_MAILBOX))
/* TODO: Should this be at a non-static location? */
#define MAILBOX_EXOSPHERE_CONFIG (*((volatile exosphere_config_t *)(MAILBOX_BASE + 0xE40ULL)))
static exosphere_config_t g_exosphere_cfg = {MAGIC_EXOSPHERE_BOOTCONFIG, EXOSPHERE_TARGET_FIRMWARE_DEFAULT_FOR_DEBUG};
static bool g_has_loaded_config = false;
/* Read config out of IRAM, return target firmware version. */
unsigned int exosphere_load_config(void) {
if (g_has_loaded_config) {
generic_panic();
}
g_has_loaded_config = true;
if (MAILBOX_EXOSPHERE_CONFIG.magic == MAGIC_EXOSPHERE_BOOTCONFIG) {
g_exosphere_cfg = MAILBOX_EXOSPHERE_CONFIG;
}
return g_exosphere_cfg.target_firmware;
}
unsigned int exosphere_get_target_firmware(void) {
if (!g_has_loaded_config) {
generic_panic();
}
return g_exosphere_cfg.target_firmware;
}