mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-19 02:16:40 +00:00
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
#include "utils.h"
|
|
#include "hwinit.h"
|
|
#include "fuse.h"
|
|
#include "se.h"
|
|
#include "sd_utils.h"
|
|
#include "stage2.h"
|
|
#include "lib/printk.h"
|
|
#include "display/video_fb.h"
|
|
|
|
/* TODO: Should we allow more than 32K for the BCT0? */
|
|
#define BCT0_LOAD_ADDRESS (uintptr_t)(0x40038000)
|
|
#define BCT0_LOAD_END_ADDRESS (uintptr_t)(0x4003F000)
|
|
#define MAGIC_BCT0 0x30544342
|
|
|
|
#define DEFAULT_BCT0_FOR_DEBUG "BCT0\n[stage1]\nstage2_path = stage2.bin\nstage2_addr = 0xFFF00000\nstage2_entrypoint = 0xCAFEBABE\n"
|
|
|
|
const char *load_config(void) {
|
|
if (!read_sd_file((void *)BCT0_LOAD_ADDRESS, BCT0_LOAD_END_ADDRESS - BCT0_LOAD_ADDRESS, "BCT.ini")) {
|
|
printk("Failed to read BCT0 from SD!\n");
|
|
printk("[DEBUG] Using default BCT0!\n");
|
|
memcpy((void *)BCT0_LOAD_ADDRESS, DEFAULT_BCT0_FOR_DEBUG, sizeof(DEFAULT_BCT0_FOR_DEBUG));
|
|
/* TODO: Stop using default. */
|
|
/* printk("Error: Failed to load BCT.ini!\n");
|
|
* generic_panic(); */
|
|
}
|
|
|
|
if ((*((u32 *)(BCT0_LOAD_ADDRESS))) != MAGIC_BCT0) {
|
|
printk("Error: Unexpected magic in BCT.ini!\n");
|
|
generic_panic();
|
|
}
|
|
/* Return pointer to first line of the ini. */
|
|
const char *bct0 = (const char *)BCT0_LOAD_ADDRESS;
|
|
while (*bct0 && *bct0 != '\n') {
|
|
bct0++;
|
|
}
|
|
if (!bct0) {
|
|
printk("Error: BCT.ini has no newline!\n");
|
|
generic_panic();
|
|
}
|
|
return bct0;
|
|
}
|
|
|
|
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) {
|
|
stage2_entrypoint_t stage2_entrypoint;
|
|
void **stage2_argv = (void **)(BCT0_LOAD_END_ADDRESS);
|
|
const char *bct0;
|
|
u32 *lfb_base;
|
|
|
|
/* Initialize DRAM. */
|
|
/* TODO: What can be stripped out to make this minimal? */
|
|
nx_hwinit();
|
|
|
|
/* Initialize the display. */
|
|
display_init();
|
|
|
|
/* Register the display as a printk provider. */
|
|
lfb_base = display_init_framebuffer();
|
|
video_init(lfb_base);
|
|
|
|
/* Turn on the backlight after initializing the lfb */
|
|
/* to avoid flickering. */
|
|
display_enable_backlight(true);
|
|
|
|
/* Say hello. */
|
|
printk("Welcome to Atmosph\xe8re Fus\xe9" "e!\n");
|
|
printk("Using color linear framebuffer at 0x%p!\n", lfb_base);
|
|
|
|
/* Try to load the SBK into the security engine, if possible. */
|
|
/* TODO: Should this be done later? */
|
|
load_sbk();
|
|
|
|
/* Load the BCT0 configuration ini off of the SD. */
|
|
bct0 = load_config();
|
|
|
|
/* Load the loader payload into DRAM. */
|
|
stage2_entrypoint = load_stage2(bct0);
|
|
|
|
/* Setup argv. */
|
|
memset(stage2_argv, 0, STAGE2_ARGC * sizeof(*stage2_argv));
|
|
stage2_argv[STAGE2_ARGV_VERSION] = &stage2_argv[STAGE2_ARGC];
|
|
*((u32 *)stage2_argv[STAGE2_ARGV_VERSION]) = 0;
|
|
stage2_argv[STAGE2_ARGV_CONFIG] = (void *)bct0;
|
|
stage2_argv[STAGE2_ARGV_LFB] = lfb_base;
|
|
|
|
|
|
/* Jump to Stage 2. */
|
|
stage2_entrypoint(STAGE2_ARGC, stage2_argv);
|
|
return 0;
|
|
}
|
|
|