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[exosphere] Rewrite crt0/init and ld script

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This commit is contained in:
TuxSH 2018-05-11 14:07:37 +02:00
parent 02e01360fd
commit 05b8b42164
11 changed files with 160 additions and 177 deletions
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17
exosphere/src/package2.c
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@ -78,7 +78,7 @@ static void setup_se(void) {
/* Detect Master Key revision. */
mkey_detect_revision();
/* Derive new device keys. */
switch (exosphere_get_target_firmware()) {
case EXOSPHERE_TARGET_FIRMWARE_100:
@ -294,7 +294,7 @@ static uint32_t decrypt_and_validate_header(package2_header_t *header) {
}
/* Ensure we successfully decrypted the header. */
if (mkey_rev > mkey_get_revision()) {
if (mkey_rev > mkey_get_revision()) {
panic(0xFAF00003);
}
} else if (!validate_package2_metadata(&header->metadata)) {
@ -349,7 +349,7 @@ static void load_package2_sections(package2_meta_t *metadata, uint32_t master_ke
memset(load_buf, 0, PACKAGE2_SIZE_MAX);
load_buf = (void *)potential_base_start;
}
size_t cur_section_offset = 0;
/* Copy each section to its appropriate location, decrypting if necessary. */
for (unsigned int section = 0; section < PACKAGE2_SECTION_MAX; section++) {
@ -395,7 +395,7 @@ uintptr_t get_pk2ldr_stack_address(void) {
void load_package2(coldboot_crt0_reloc_list_t *reloc_list) {
/* Load Exosphere-specific config. */
exosphere_load_config();
/* Setup the Security Engine. */
setup_se();
@ -407,10 +407,10 @@ void load_package2(coldboot_crt0_reloc_list_t *reloc_list) {
/* Save boot reason to global. */
bootconfig_load_boot_reason((volatile boot_reason_t *)(MAILBOX_NX_BOOTLOADER_BOOT_REASON));
/* Initialize cache'd random bytes for kernel. */
randomcache_init();
/* memclear the initial copy of Exosphere running in IRAM (relocated to TZRAM by earlier code). */
memset((void *)reloc_list->reloc_base, 0, reloc_list->loaded_bin_size);
/* Let NX Bootloader know that we're running. */
@ -438,6 +438,7 @@ void load_package2(coldboot_crt0_reloc_list_t *reloc_list) {
secure_additional_devices();
/* Remove the identity mapping for iRAM-C+D & TZRAM */
/* For our crt0 to work, this doesn't actually unmap TZRAM */
identity_unmap_iram_cd_tzram();
/* Load header from NX_BOOTLOADER-initialized DRAM. */
@ -451,7 +452,7 @@ void load_package2(coldboot_crt0_reloc_list_t *reloc_list) {
if (header.signature[0] == 0 && memcmp(header.signature, header.signature + 1, sizeof(header.signature) - 1) == 0 && header.metadata.magic == MAGIC_PK21) {
bootconfig_set_package2_plaintext_and_unsigned();
}
verify_header_signature(&header);
/* Decrypt header, get key revision required. */
@ -484,7 +485,7 @@ void load_package2(coldboot_crt0_reloc_list_t *reloc_list) {
} else {
sync_with_nx_bootloader(NX_BOOTLOADER_STATE_FINISHED);
}
/* Prepare the SMC API with version-dependent SMCs. */
set_version_specific_smcs();