esp8266: Enable frozen bytecode, with scripts in modules/ subdir.

To start with, the critical scripts _boot.py and flashbdev.py are frozen
to improve performance and reduce RAM consumption.

Saves about 1000 bytes of heap RAM for a bare boot with filesystem.

2 files changed, 0 insertions, 77 deletions

diff --git a/esp8266/scripts/_boot.py b/esp8266/scripts/_boot.py
deleted file mode 100644
index c950de6758..0000000000
--- a/esp8266/scripts/_boot.py
+++ /dev/null
@@ -1,9 +0,0 @@
-import uos
-from flashbdev import bdev
-
-try:
-    if bdev:
-        vfs = uos.VfsFat(bdev, "")
-except OSError:
-    import inisetup
-    vfs = inisetup.setup()
diff --git a/esp8266/scripts/flashbdev.py b/esp8266/scripts/flashbdev.py
deleted file mode 100644
index 07ed966020..0000000000
--- a/esp8266/scripts/flashbdev.py
+++ /dev/null
@@ -1,68 +0,0 @@
-import esp
-
-class FlashBdev:
-
-    SEC_SIZE = 4096
-    START_SEC = 0x89000 // SEC_SIZE
-    NUM_BLK = 0x73
-
-    def __init__(self, blocks=NUM_BLK):
-        self.blocks = blocks
-
-    def readblocks(self, n, buf):
-        #print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
-        esp.flash_read((n + self.START_SEC) * self.SEC_SIZE, buf)
-
-    def writeblocks(self, n, buf):
-        #print("writeblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
-        #assert len(buf) <= self.SEC_SIZE, len(buf)
-        esp.flash_erase(n + self.START_SEC)
-        esp.flash_write((n + self.START_SEC) * self.SEC_SIZE, buf)
-
-    def ioctl(self, op, arg):
-        #print("ioctl(%d, %r)" % (op, arg))
-        if op == 4:  # BP_IOCTL_SEC_COUNT
-            return self.blocks
-        if op == 5:  # BP_IOCTL_SEC_SIZE
-            return self.SEC_SIZE
-
-def set_bl_flash_size(real_size):
-    if real_size == 256*1024:
-        code = 1
-    elif real_size == 512*1024:
-        code = 0
-    elif real_size == 1024*1024:
-        code = 2
-    elif real_size == 2048*1024:
-        code = 3
-    elif real_size == 4096*1024:
-        code = 4
-    else:
-        code = 2
-    buf = bytearray(4096)
-    esp.flash_read(0, buf)
-    buf[3] = (buf[3] & 0xf) | (code << 4)
-    esp.flash_erase(0)
-    esp.flash_write(0, buf)
-
-# If bootloader size ID doesn't correspond to real Flash size,
-# fix bootloader value and reboot.
-size = esp.flash_id() >> 16
-# Check that it looks like realistic power of 2 for flash sizes
-# commonly used with esp8266
-if 22 >= size >= 18:
-    size = 1 << size
-    if size != esp.flash_size():
-        import machine
-        import time
-        print("Bootloader Flash size appear to have been set incorrectly, trying to fix")
-        set_bl_flash_size(size)
-        machine.reset()
-        while 1: time.sleep(1)
-
-size = esp.flash_size()
-if size < 1024*1024:
-    bdev = None
-else:
-    # 16K at the flash end is reserved for SDK params storage
-    bdev = FlashBdev((size - 16384) // FlashBdev.SEC_SIZE - FlashBdev.START_SEC)