coldcard/firmware
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

compressed GPU bianry

Browse Source
This commit is contained in:
Peter D. Gray 2023-08-15 13:01:24 -04:00 committed by scgbckbone
parent 67fe10b128
commit 5399481a0d
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
shared/gpu.py
View File

@ -266,7 +266,7 @@ class GPUAccess:
def upgrade(self):
# do in-circuit programming of GPU chip
import gpu_binary
import gpu_binary, zlib
# get into bootloader
if self.get_version() != 'BL':
@ -277,13 +277,15 @@ class GPUAccess:
ok = self.bulk_erase()
assert ok, 'bulk erase fail'
tmp = zlib.decompress(gpu_binary.BINARY)
# write block by block, but skip first part, so we can handle powerfail w/o brick
for pos in range(256, gpu_binary.LENGTH, 256):
ok = self.write_at(FLASH_START+pos, gpu_binary.BINARY[pos:pos+256])
ok = self.write_at(FLASH_START+pos, tmp[pos:pos+256])
assert ok
# finally, the first part, which commits us to running this code on reset
self.write_at(FLASH_START, gpu_binary.BINARY[0:256])
self.write_at(FLASH_START, tmp[0:256])
self.run_at(FLASH_START)
utime.sleep_ms(50)