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hos: Add secmon/warmboot base selection

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This commit is contained in:
CTCaer 2020-06-14 14:00:07 +03:00
parent 3aa195943d
commit 9489eca487
5 changed files with 21 additions and 10 deletions
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17
bootloader/hos/hos.c
View file

@ -648,6 +648,8 @@ static bool _get_fs_exfat_compatible(link_t *info, bool *fs_is_510)
int hos_launch(ini_sec_t *cfg)
{
u8 kb;
u32 secmon_base;
u32 warmboot_base;
launch_ctxt_t ctxt;
bool exo_new = false;
tsec_ctxt_t tsec_ctxt;
@ -727,6 +729,9 @@ int hos_launch(ini_sec_t *cfg)
// Check if secmon is new exosphere.
if (ctxt.secmon)
exo_new = !memcmp((void *)((u8 *)ctxt.secmon + ctxt.secmon_size - 4), "LENY", 4);
const pkg1_id_t *pk1_latest = pkg1_get_latest();
secmon_base = exo_new ? pk1_latest->secmon_base : ctxt.pkg1_id->secmon_base;
warmboot_base = exo_new ? pk1_latest->warmboot_base : ctxt.pkg1_id->warmboot_base;
h_cfg.aes_slots_new = exo_new;
// Generate keys.
@ -735,7 +740,7 @@ int hos_launch(ini_sec_t *cfg)
tsec_ctxt.fw = (u8 *)ctxt.pkg1 + ctxt.pkg1_id->tsec_off;
tsec_ctxt.pkg1 = ctxt.pkg1;
tsec_ctxt.pkg11_off = ctxt.pkg1_id->pkg11_off;
tsec_ctxt.secmon_base = ctxt.pkg1_id->secmon_base;
tsec_ctxt.secmon_base = secmon_base;
if (kb >= KB_FIRMWARE_VERSION_700 && !h_cfg.sept_run)
{
@ -770,7 +775,7 @@ int hos_launch(ini_sec_t *cfg)
// Replace 'warmboot.bin' if requested.
if (ctxt.warmboot)
memcpy((void *)ctxt.pkg1_id->warmboot_base, ctxt.warmboot, ctxt.warmboot_size);
memcpy((void *)warmboot_base, ctxt.warmboot, ctxt.warmboot_size);
else
{
if (kb >= KB_FIRMWARE_VERSION_700)
@ -786,11 +791,11 @@ int hos_launch(ini_sec_t *cfg)
}
// Set warmboot address in PMC if required.
if (ctxt.pkg1_id->set_warmboot)
PMC(APBDEV_PMC_SCRATCH1) = ctxt.pkg1_id->warmboot_base;
PMC(APBDEV_PMC_SCRATCH1) = warmboot_base;
// Replace 'SecureMonitor' if requested.
if (ctxt.secmon)
memcpy((void *)ctxt.pkg1_id->secmon_base, ctxt.secmon, ctxt.secmon_size);
memcpy((void *)secmon_base, ctxt.secmon, ctxt.secmon_size);
else if (ctxt.pkg1_id->secmon_patchset)
{
// Else we patch it to allow for an unsigned package2 and patched kernel.
@ -983,7 +988,7 @@ int hos_launch(ini_sec_t *cfg)
// Config Exosphère if booting full Atmosphère.
if (ctxt.atmosphere && ctxt.secmon)
config_exosphere(&ctxt);
config_exosphere(&ctxt, warmboot_base);
// Unmount SD card and eMMC.
sd_end();
@ -1031,7 +1036,7 @@ int hos_launch(ini_sec_t *cfg)
if (smmu_is_used())
smmu_exit();
else
ccplex_boot_cpu0(ctxt.pkg1_id->secmon_base);
ccplex_boot_cpu0(secmon_base);
while (!secmon_mailbox->out)
; // A usleep(1) only works when in IRAM or with a trained DRAM.

5
bootloader/hos/pkg1.c
View file

@ -133,6 +133,11 @@ static const pkg1_id_t _pkg1_ids[] = {
{ NULL } //End.
};
const pkg1_id_t *pkg1_get_latest()
{
return &_pkg1_ids[sizeof(_pkg1_ids) / sizeof(pkg1_id_t) - 2];
}
const pkg1_id_t *pkg1_identify(u8 *pkg1)
{
char build_date[15];

1
bootloader/hos/pkg1.h
View file

@ -57,6 +57,7 @@ typedef struct _pk11_hdr_t
u32 sm_off;
} pk11_hdr_t;
const pkg1_id_t *pkg1_get_latest();
const pkg1_id_t *pkg1_identify(u8 *pkg1);
void pkg1_decrypt(const pkg1_id_t *id, u8 *pkg1);
void pkg1_unpack(void *warmboot_dst, void *secmon_dst, void *ldr_dst, const pkg1_id_t *id, u8 *pkg1);

6
bootloader/hos/secmon_exo.c
View file

@ -141,7 +141,7 @@ typedef struct _atm_fatal_error_ctx
#define EXO_FW_VER(mj, mn, rv) (((mj) << 24) | ((mn) << 16) | ((rv) << 8))
void config_exosphere(launch_ctxt_t *ctxt)
void config_exosphere(launch_ctxt_t *ctxt, u32 warmboot_base)
{
u32 exoFwNo = 0;
u32 exoFlags = 0;
@ -284,7 +284,7 @@ void config_exosphere(launch_ctxt_t *ctxt)
exo_cfg->flags = exoFlags;
// If warmboot is lp0fw, add in RSA modulus.
volatile wb_cfg_t *wb_cfg = (wb_cfg_t *)(ctxt->pkg1_id->warmboot_base + ATM_WB_HEADER_OFF);
volatile wb_cfg_t *wb_cfg = (wb_cfg_t *)(warmboot_base + ATM_WB_HEADER_OFF);
if (wb_cfg->magic == ATM_WB_MAGIC)
{
@ -302,7 +302,7 @@ void config_exosphere(launch_ctxt_t *ctxt)
else
rsa_mod[0x10] = 0x37;
memcpy((void *)(ctxt->pkg1_id->warmboot_base + 0x10), rsa_mod + 0x10, 0x100);
memcpy((void *)(warmboot_base + 0x10), rsa_mod + 0x10, 0x100);
}
if (emu_cfg.enabled && !h_cfg.emummc_force_disable)

2
bootloader/hos/secmon_exo.h
View file

@ -19,7 +19,7 @@
#include "../utils/types.h"
void config_exosphere(launch_ctxt_t *ctxt);
void config_exosphere(launch_ctxt_t *ctxt, u32 warmboot_base);
void secmon_exo_check_panic();
#endif