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Fix occasion 'three-dots' crash

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This commit is contained in:
Peter D. Gray 2024-04-15 11:06:15 -04:00
parent 751cd7707e
commit d623514422
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GPG Key ID: A2DCD558C2BE5D7C
2 changed files with 21 additions and 4 deletions
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6
stm32/COLDCARD_MK4/file_time.c
View File

@ -2,12 +2,12 @@
//
// AUTO-generated.
//
// built: 2024-03-10
// version: 1.0.0Q
// built: 2024-04-11
// version: 5.3.0
//
#include <stdint.h>
// this overrides ports/stm32/fatfs_port.c
uint32_t get_fattime(void) {
return 0x586a0800UL;
return 0x588b2860UL;
}

19
stm32/COLDCARD_MK4/psramdisk.c
View File

@ -499,13 +499,30 @@ static void psram_init_vfs(fs_user_mount_t *vfs, bool readonly) {
vfs->blockdev.u.ioctl[1] = MP_OBJ_FROM_PTR(&psram_obj);
}
// psram_memset4()
//
static inline void
psram_memset4(void *dest_addr, uint32_t value, uint32_t byte_len)
{
// Fast, aligned, and bug-fixing memset
// - PSRAM can starve the internal bus with too many writes, too fast
// - leads to a weird crash where SRAM bus (at least) is locked up, but flash works
uint32_t *dest = (uint32_t *)dest_addr;
for(; byte_len; byte_len-=4, dest++) {
*dest = value;
asm("nop; nop; nop;"); // tested value, do not reduce
}
}
mp_obj_t psram_wipe_and_setup(mp_obj_t unused_self)
{
// Erase and reformat filesystem
// - you probably should unmount it, before calling this
// Wipe contents for security.
memset(PSRAM_TOP_BASE, 0x21, BLOCK_SIZE * BLOCK_COUNT);
psram_memset4(PSRAM_TOP_BASE, 0x12345678, BLOCK_SIZE * BLOCK_COUNT);
// Build obj to handle blockdev protocol
fs_user_mount_t vfs = {0};