mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-02-07 14:51:26 +01:00
320ec38be1
- Updated code to match hekate's; - Improved nxboot (now boots firmwares 2.x successfully); - Temporarily disabled built-in boot system module support; - Fixed multiple bugs.
134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
#include "utils.h"
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#include "exception_handlers.h"
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#include "panic.h"
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#include "hwinit.h"
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#include "di.h"
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#include "timers.h"
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#include "fs_utils.h"
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#include "stage2.h"
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#include "chainloader.h"
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#include "sdmmc/sdmmc.h"
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#include "lib/fatfs/ff.h"
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#include "lib/printk.h"
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#include "display/video_fb.h"
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extern void (*__program_exit_callback)(int rc);
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static void *g_framebuffer;
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static char g_bct0_buffer[BCTO_MAX_SIZE];
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#define DEFAULT_BCT0_FOR_DEBUG \
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"BCT0\n"\
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"[stage1]\n"\
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"stage2_path = fusee-secondary.bin\n"\
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"stage2_addr = 0xF0000000\n"\
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"stage2_entrypoint = 0xF0000000\n"
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static const char *load_config(void) {
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if (!read_from_file(g_bct0_buffer, BCTO_MAX_SIZE, "BCT.ini")) {
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printk("Failed to read BCT0 from SD!\n");
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printk("[DEBUG] Using default BCT0!\n");
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memcpy(g_bct0_buffer, DEFAULT_BCT0_FOR_DEBUG, sizeof(DEFAULT_BCT0_FOR_DEBUG));
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/* TODO: Stop using default. */
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/* printk("Error: Failed to load BCT.ini!\n");
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* generic_panic(); */
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}
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if (memcmp(g_bct0_buffer, "BCT0", 4) != 0) {
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fatal_error("Unexpected magic in BCT.ini!\n");
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}
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/* Return pointer to first line of the ini. */
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const char *bct0 = g_bct0_buffer;
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while (*bct0 && *bct0 != '\n') {
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bct0++;
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}
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if (!bct0) {
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fatal_error("BCT.ini has no newline!\n");
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}
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return bct0;
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}
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static void setup_env(void) {
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g_framebuffer = (void *)0xC0000000;
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/* Initialize hardware. */
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nx_hwinit();
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/* Check for panics. */
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check_and_display_panic();
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/* Zero-fill the framebuffer and register it as printk provider. */
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video_init(g_framebuffer);
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/* Initialize the display. */
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display_init();
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/* Set the framebuffer. */
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display_init_framebuffer(g_framebuffer);
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/* Turn on the backlight after initializing the lfb */
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/* to avoid flickering. */
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display_backlight(true);
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/* Set up the exception handlers. */
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setup_exception_handlers();
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/* Mount the SD card. */
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mount_sd();
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}
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static void cleanup_env(void) {
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/* Unmount the SD card. */
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unmount_sd();
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display_backlight(false);
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display_end();
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}
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static void exit_callback(int rc) {
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(void)rc;
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relocate_and_chainload();
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}
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int main(void) {
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const char *bct0;
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const char *stage2_path;
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stage2_args_t *stage2_args;
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uint32_t stage2_version = 0;
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/* Set the SDMMC's driver logging level. */
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sdmmc_set_log_level(SDMMC_LOG_INFO);
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/* Initialize the display, console, etc. */
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setup_env();
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/* Say hello. */
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printk("Welcome to Atmosph\xe8re Fus\xe9" "e!\n");
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printk("Using color linear framebuffer at 0x%p!\n", g_framebuffer);
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/* Load the BCT0 configuration ini off of the SD. */
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bct0 = load_config();
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/* Load the loader payload into DRAM. */
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load_stage2(bct0);
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/* Setup argument data. */
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stage2_path = stage2_get_program_path();
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strcpy(g_chainloader_arg_data, stage2_path);
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stage2_args = (stage2_args_t *)(g_chainloader_arg_data + strlen(stage2_path) + 1); /* May be unaligned. */
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memcpy(&stage2_args->version, &stage2_version, 4);
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stage2_args->display_initialized = false;
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strcpy(stage2_args->bct0, bct0);
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g_chainloader_argc = 2;
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/* Wait a while. */
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mdelay(1000);
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/* Deinitialize the display, console, etc. */
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cleanup_env();
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/* Finally, after the cleanup routines (__libc_fini_array, etc.) are called, jump to Stage2. */
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__program_exit_callback = exit_callback;
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return 0;
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}
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