Atmosphere/fusee/fusee-primary/src/main.c

119 lines
3.4 KiB
C
Raw Normal View History

2018-04-07 21:43:54 +00:00
#include "utils.h"
#include "hwinit.h"
#include "fuse.h"
#include "se.h"
#include "sd_utils.h"
#include "stage2.h"
#include "chainloader.h"
2018-05-04 17:21:15 +00:00
#include "sdmmc.h"
2018-05-06 15:22:12 +00:00
#include "lib/fatfs/ff.h"
#include "lib/printk.h"
#include "display/video_fb.h"
2018-04-07 21:43:54 +00:00
static char g_bct0_buffer[BCTO_MAX_SIZE];
2018-04-07 21:43:54 +00:00
2018-05-04 19:52:38 +00:00
#define DEFAULT_BCT0_FOR_DEBUG \
"BCT0\n"\
"[stage1]\n"\
"stage2_path = fusee-secondary.bin\n"\
2018-05-07 21:50:30 +00:00
"stage2_addr = 0xF0000000\n"\
"stage2_entrypoint = 0xF0000000\n"
const char *load_config(void) {
if (!read_sd_file(g_bct0_buffer, BCTO_MAX_SIZE, "BCT.ini")) {
printk("Failed to read BCT0 from SD!\n");
printk("[DEBUG] Using default BCT0!\n");
memcpy(g_bct0_buffer, DEFAULT_BCT0_FOR_DEBUG, sizeof(DEFAULT_BCT0_FOR_DEBUG));
/* TODO: Stop using default. */
/* printk("Error: Failed to load BCT.ini!\n");
* generic_panic(); */
2018-04-07 21:43:54 +00:00
}
2018-05-04 19:52:38 +00:00
if (memcmp(g_bct0_buffer, "BCT0", 4) != 0) {
printk("Error: Unexpected magic in BCT.ini!\n");
generic_panic();
}
/* Return pointer to first line of the ini. */
const char *bct0 = g_bct0_buffer;
while (*bct0 && *bct0 != '\n') {
bct0++;
}
if (!bct0) {
printk("Error: BCT.ini has no newline!\n");
generic_panic();
}
return bct0;
2018-04-07 21:43:54 +00:00
}
void load_sbk(void) {
uint32_t sbk[0x4];
/* Load the SBK into the security engine, if relevant. */
memcpy(sbk, (void *)get_fuse_chip_regs()->FUSE_PRIVATE_KEY, 0x10);
for (unsigned int i = 0; i < 4; i++) {
if (sbk[i] != 0xFFFFFFFF) {
set_aes_keyslot(0xE, sbk, 0x10);
break;
}
}
}
int main(void) {
const char *bct0;
u32 *lfb_base;
const char *stage2_path;
stage2_args_t stage2_args = {0};
2018-05-04 19:52:38 +00:00
2018-04-07 21:43:54 +00:00
/* Initialize DRAM. */
/* TODO: What can be stripped out to make this minimal? */
nx_hwinit();
2018-05-04 19:52:38 +00:00
/* Initialize the display. */
display_init();
2018-05-04 19:52:38 +00:00
/* Register the display as a printk provider. */
lfb_base = display_init_framebuffer((void *)0xC0000000);
video_init(lfb_base);
2018-05-04 19:52:38 +00:00
/* Turn on the backlight after initializing the lfb */
/* to avoid flickering. */
display_enable_backlight(true);
2018-05-04 19:52:38 +00:00
/* Say hello. */
printk("Welcome to Atmosph\xe8re Fus\xe9" "e!\n");
printk("Using color linear framebuffer at 0x%p!\n", lfb_base);
2018-05-04 19:52:38 +00:00
#ifndef I_KNOW_WHAT_I_AM_DOING
2018-05-04 22:38:10 +00:00
#error "Fusee is a work-in-progress bootloader, and is not ready for usage yet. If you want to play with it anyway, please #define I_KNOW_WHAT_I_AM_DOING -- and recognize that we will be unable to provide support until it is ready for general usage :)"
printk("Warning: Fus\e9e is not yet completed, and not ready for general testing!\n");
printk("Please do not seek support for it until it is done.\n");
generic_panic();
#endif
2018-04-07 21:43:54 +00:00
/* Try to load the SBK into the security engine, if possible. */
/* TODO: Should this be done later? */
load_sbk();
2018-05-04 19:52:38 +00:00
/* Load the BCT0 configuration ini off of the SD. */
bct0 = load_config();
2018-05-04 19:52:38 +00:00
2018-04-07 21:43:54 +00:00
/* Load the loader payload into DRAM. */
load_stage2(bct0);
f_unmount("");
2018-05-04 19:52:38 +00:00
display_enable_backlight(false);
display_end();
/* Setup argument data. */
stage2_path = stage2_get_program_path();
stage2_args.version = 0;
strcpy(stage2_args.bct0, bct0);
strcpy(g_chainloader_arg_data, stage2_path);
memcpy(g_chainloader_arg_data + strlen(stage2_path) + 1, &stage2_args, sizeof(stage2_args_t));
/* Jump to Stage 2. */
relocate_and_chainload(STAGE2_ARGC);
2018-04-07 21:43:54 +00:00
return 0;
}