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Implement all core Stage 1 logic for Fusee

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This commit is contained in:
Michael Scire
2018-04-07 22:51:24 -06:00
parent 18f1274587
commit 33f76545df
19 changed files with 14671 additions and 31 deletions
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64
fusee/fusee-primary/src/main.c
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@@ -3,13 +3,34 @@
#include "fuse.h"
#include "se.h"
#include "sd_utils.h"
#include "stage2.h"
#include "lib/printk.h"
#include "display/video_fb.h"
#define LOADER_ADDRESS (void (*)(void))(0xFFF00000)
/* 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
void load_stage2(void *dst_address) {
if (!read_sd_file(dst_address, "fusee-loader.bin")) {
/* TODO: This is the failure condition. How should we panic? */
const char *load_config(void) {
if (!read_sd_file((void *)BCT0_LOAD_ADDRESS, BCT0_LOAD_END_ADDRESS - BCT0_LOAD_ADDRESS, "BCT.ini")) {
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) {
@@ -25,21 +46,46 @@ void load_sbk(void) {
}
int main(void) {
void (*loader)(void) = LOADER_ADDRESS;
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);
/* 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 loader payload into DRAM. */
load_stage2(LOADER_ADDRESS);
/* Load the BCT0 configuration ini off of the SD. */
bct0 = load_config();
/* TODO: Should the loader take argc/argv? */
loader();
/* 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;
}