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fusee: support getting old tsec key from new tsec fw.

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This commit is contained in:
Michael Scire
2018-11-25 16:22:47 -08:00
parent eab5e0df9b
commit c3569ec5e2
7 changed files with 50 additions and 26 deletions
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16
fusee/fusee-secondary/src/package1.c
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@@ -90,15 +90,19 @@ int package1_read_and_parse_boot0(void **package1loader, size_t *package1loader_
return 0;
}
size_t package1_get_tsec_fw(void **tsec_fw, const void *package1loader, size_t package1loader_size) {
bool package1_get_tsec_fw(void **tsec_fw, const void *package1loader, size_t package1loader_size) {
/* The TSEC firmware is always located at a 256-byte aligned address. */
/* We're looking for its 4 first bytes. We assume its size is always 0xF00 bytes. */
/* We're looking for its 4 first bytes. */
const uint32_t *pos;
uintptr_t pk1l = (uintptr_t)package1loader;
for (pos = (const uint32_t *)pk1l; (uintptr_t)pos < pk1l + package1loader_size && *pos != 0xCF42004D; pos += 0x40);
(*tsec_fw) = (void *)pos;
return 0xF00;
for (pos = (const uint32_t *)pk1l; (uintptr_t)pos < pk1l + package1loader_size; pos += 0x40) {
if (*pos == 0xCF42004D) {
(*tsec_fw) = (void *)pos;
return true;
}
}
return false;
}
size_t package1_get_encrypted_package1(package1_header_t **package1, uint8_t *ctr, const void *package1loader, size_t package1loader_size) {