OmniNX/Atmosphere
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Redesign fs_dev, raw_dev, introducing device_partition and switch_fs.

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In theory, one could mount an encrypted FAT partition itself coming from a disk image, etc.
This commit is contained in:
TuxSH
2018-05-13 19:53:55 +02:00
parent 396a646fa3
commit 4f50d412f5
18 changed files with 878 additions and 674 deletions
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64
fusee/fusee-secondary/src/nxboot.c
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@@ -1,12 +1,8 @@
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "sdmmc.h"
#include "raw_mmc_dev.h"
#include "utils.h"
#include "nxboot.h"
#include "key_derivation.h"
#include "gpt.h"
#include "package1.h"
#include "package2.h"
#include "loader.h"
@@ -49,64 +45,10 @@ void nxboot_configure_exosphere(void) {
*(MAILBOX_EXOSPHERE_CONFIGURATION) = exo_cfg;
}
static struct mmc nand_mmc; /* TODO: Remove, move it elsewhere and actually initalize the controller!! */
static int init_rawnand_and_boot0_devices(void) {
if (rawmmcdev_mount_unencrypted_device("rawnand", &nand_mmc, SDMMC_PARTITION_USER, 0, 32ull<<30) == -1) {
return -1;
}
if (rawmmcdev_mount_unencrypted_device("boot0", &nand_mmc, SDMMC_PARTITION_BOOT0, 0, 0x184000) == -1) {
return -1;
}
return 0;
}
static bool g_bcpkg2_initialized = false;
static int bcpkg2_finder_callback(const efi_entry_t *entry, size_t entry_offset, FILE *disk) {
/* TODO: what about backup partitions? */
static const uint16_t part_name[] = u"BCPKG2-1-Normal-Main";
if (memcmp(entry->name, part_name, sizeof(part_name)) == 0) {
uint64_t part_offset = 512 * entry->first_lba;
uint64_t part_size = 512 * (entry->last_lba - entry->first_lba);
int rc = rawmmcdev_mount_unencrypted_device("bcpkg2", &nand_mmc, SDMMC_PARTITION_USER, part_offset, part_size);
g_bcpkg2_initialized = rc == 0;
return rc;
}
return 0;
}
/* Find BCPKG2-1-Normal-Main using the GPT, then register it. */
static int init_bcpkg2_device(void) {
FILE *rawnand = fopen("rawnand:/", "rb");
int rc;
if (rawnand == NULL) {
return -1;
}
rc = gpt_iterate_through_entries(rawnand, bcpkg2_finder_callback);
fclose(rawnand);
if (rc == 0 && !g_bcpkg2_initialized) {
errno = ENOENT;
return -1;
}
return rc;
}
/* This is the main function responsible for booting Horizon. */
void nxboot_main(void) {
loader_ctx_t *loader_ctx = get_loader_ctx();
/* TODO: this is not always necessary */
if (init_rawnand_and_boot0_devices()) {
printf("Error: Failed to mount rawnand and/or boot0: %s!\n", strerror(errno));
generic_panic();
}
/* TODO: Validate that we're capable of booting. */
/* TODO: Initialize Boot Reason. */
@@ -120,10 +62,6 @@ void nxboot_main(void) {
//derive_nx_keydata(MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware);
if (loader_ctx->package2_loadfile.load_address == 0) {
if (init_bcpkg2_device() == -1) {
printf("Error: Failed to mount BCPKG2-1-Normal-Main: %s!\n", strerror(errno));
generic_panic();
}
/* TODO: read package2 somewhere. */
}
@@ -151,7 +89,5 @@ void nxboot_main(void) {
/* Display splash screen. */
display_splash_screen_bmp(loader_ctx->custom_splash_path);
rawmmcdev_unmount_all();
/* TODO: Halt ourselves. */
}