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hos: allow reusage of embedded INI1 region

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CTCaer 2023-10-12 07:36:00 +03:00
parent 533fb08a1c
commit 03f11370c7
1 changed files with 25 additions and 14 deletions
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39
bootloader/hos/pkg2.c
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@ -702,30 +702,39 @@ DPRINTF("sec %d has size %08X\n", i, hdr->sec_size[i]);
return hdr;
}
static u32 _pkg2_ini1_build(u8 *pdst, pkg2_hdr_t *hdr, link_t *kips_info, bool new_pkg2)
static u32 _pkg2_ini1_build(u8 *pdst, u8 *psec, pkg2_hdr_t *hdr, link_t *kips_info, bool new_pkg2)
{
// Calculate INI1 size.
u32 ini1_size = sizeof(pkg2_ini1_t);
pkg2_ini1_t *ini1 = (pkg2_ini1_t *)pdst;
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, kips_info, link)
{
ini1_size += ki->size;
}
// Align size and set it.
ini1_size = ALIGN(ini1_size, 4);
// For new kernel if INI1 fits in the old one, use it.
bool use_old_ini_region = psec && ini1_size <= (pkg2_newkern_ini1_end - pkg2_newkern_ini1_start);
if (use_old_ini_region)
pdst = psec + pkg2_newkern_ini1_start;
// Set initial header and magic.
pkg2_ini1_t *ini1 = (pkg2_ini1_t *)pdst;
memset(ini1, 0, sizeof(pkg2_ini1_t));
ini1->magic = INI1_MAGIC;
ini1->size = ini1_size;
pdst += sizeof(pkg2_ini1_t);
// Merge kips into INI1.
// Merge KIPs into INI1.
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, kips_info, link)
{
DPRINTF("adding kip1 '%s' @ %08X (%08X)\n", ki->kip1->name, (u32)ki->kip1, ki->size);
memcpy(pdst, ki->kip1, ki->size);
pdst += ki->size;
ini1_size += ki->size;
ini1->num_procs++;
}
// Align size and set it.
ini1_size = ALIGN(ini1_size, 4);
ini1->size = ini1_size;
// Encrypt INI1 in its own section if old pkg2. Otherwise it gets embedded into Kernel.
if (!new_pkg2)
{
@ -739,16 +748,16 @@ DPRINTF("adding kip1 '%s' @ %08X (%08X)\n", ki->kip1->name, (u32)ki->kip1, ki->s
hdr->sec_off[PKG2_SEC_INI1] = 0;
}
return ini1_size;
return !use_old_ini_region ? ini1_size : 0;
}
void pkg2_build_encrypt(void *dst, void *hos_ctxt, link_t *kips_info, bool is_exo)
{
u8 *pdst = (u8 *)dst;
launch_ctxt_t * ctxt = (launch_ctxt_t *)hos_ctxt;
u32 kernel_size = ctxt->kernel_size;
bool is_meso = *(u32 *)(ctxt->kernel + 4) == ATM_MESOSPHERE;
u8 kb = ctxt->pkg1_id->kb;
u8 *pdst = (u8 *)dst;
// Force new Package2 if Mesosphere.
if (is_meso)
@ -789,12 +798,14 @@ DPRINTF("%s @ %08X (%08X)\n", is_meso ? "Mesosphere": "kernel",(u32)ctxt->kernel
hdr->sec_off[PKG2_SEC_KERNEL] = 0x10000000;
else
{
// Build INI1 for new Package2.
u32 ini1_size = _pkg2_ini1_build(pdst + kernel_size, is_meso ? NULL : pdst, hdr, kips_info, true);
hdr->sec_off[PKG2_SEC_KERNEL] = 0x60000;
// Set new INI1 offset to kernel.
*(u32 *)(pdst + (is_meso ? 8 : pkg2_newkern_ini1_info)) = kernel_size;
// Build INI1 for new Package2.
kernel_size += _pkg2_ini1_build(pdst + kernel_size, hdr, kips_info, ctxt->new_pkg2);
hdr->sec_off[PKG2_SEC_KERNEL] = 0x60000;
kernel_size += ini1_size;
}
hdr->sec_size[PKG2_SEC_KERNEL] = kernel_size;
se_aes_crypt_ctr(pkg2_keyslot, pdst, kernel_size, pdst, kernel_size, &hdr->sec_ctr[PKG2_SEC_KERNEL * SE_AES_IV_SIZE]);
@ -804,7 +815,7 @@ DPRINTF("kernel encrypted\n");
// Build INI1 for old Package2.
u32 ini1_size = 0;
if (!ctxt->new_pkg2)
ini1_size = _pkg2_ini1_build(pdst, hdr, kips_info, false);
ini1_size = _pkg2_ini1_build(pdst, NULL, hdr, kips_info, false);
DPRINTF("INI1 encrypted\n");
if (!is_exo) // Not needed on Exosphere 1.0.0 and up.