OmniNX/Atmosphere
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sept: fix undefined behavior with emummc

Browse Source
This commit is contained in:
Michael Scire
2019-06-14 18:19:10 -07:00
parent a4daa0761a
commit c8f2d17d02
6 changed files with 13 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
sept/sept-primary/src/utils.c
View File

@@ -27,12 +27,6 @@
#include <inttypes.h>
#define u8 uint8_t
#define u32 uint32_t
#include "rebootstub_bin.h"
#undef u8
#undef u32
void wait(uint32_t microseconds) {
uint32_t old_time = TIMERUS_CNTR_1US_0;
while (TIMERUS_CNTR_1US_0 - old_time <= microseconds) {
@@ -63,29 +57,12 @@ __attribute__((noreturn)) void pmc_reboot(uint32_t scratch0) {
}
}
__attribute__((noreturn)) void reboot_to_self(void) {
/* Patch SDRAM init to perform an SVC immediately after second write */
APBDEV_PMC_SCRATCH45_0 = 0x2E38DFFF;
APBDEV_PMC_SCRATCH46_0 = 0x6001DC28;
/* Set SVC handler to jump to reboot stub in IRAM. */
APBDEV_PMC_SCRATCH33_0 = 0x4003F000;
APBDEV_PMC_SCRATCH40_0 = 0x6000F208;
/* Copy reboot stub into IRAM high. */
for (size_t i = 0; i < rebootstub_bin_size; i += sizeof(uint32_t)) {
write32le((void *)0x4003F000, i, read32le(rebootstub_bin, i));
}
/* Trigger warm reboot. */
pmc_reboot(1 << 0);
}
__attribute__((noreturn)) void wait_for_button_and_reboot(void) {
uint32_t button;
while (true) {
button = btn_read();
if (button & BTN_POWER) {
reboot_to_self();
pmc_reboot(2);
}
}
}