csr: add psr conversion tool, provide btstack config as .psr

chipset/csr/btstack.psr

@@ -0,0 +1,25 @@
+    // Set ANA_Freq to 26MHz
+    &01fe = 6590
+
+    // Set HCI_NOP_DISABLE
+    &00f2 = 0001
+
+#ifdef ENABLE_SCO_OVER_HCI
+    // Set HOSTIO_MAP_SCO_PCM to 0
+    &01ab = 0000
+
+    // Set HOSTIO_MAP_SCO_CODEC to 0
+    &01b0 = 0000
+
+    // Set ENABLE_SCO_STREAMS to 0
+    &22c9 = 0000
+#endif
+
+    // Enable RTS/CTS for BCSP (0806 -> 080e)
+    &01bf = 080e
+
+    // Set UART baudrate to 115200
+    &01ea = 0001 c200
+
+    // Set Bluetooth address 
+    &0001 = 00f3 f4f5 00f0 f1f2

chipset/csr/convert_psr.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+# BlueKitchen GmbH (c) 2019
+
+import sys
+
+usage = '''
+CSR/Qualcomm PSR conversion tool for use with BTstack
+Copyright 2019 BlueKitchen GmbH
+
+Usage:
+$ ./convert_prs.py file.prs
+
+'''
+
+msg_seqno = 0
+indent = '    '
+
+def write_verbatim(fout, text):
+    fout.write(text + '\n')
+
+def write_set_varid_cmd(fout, varid, msg_payload):
+    global msg_seqno
+
+    # msg_payload must be at least 4 uint16
+    while len(msg_payload) < 4:
+        msg_payload.append(0)
+
+    # setup msg
+    msg_type   = 0x0002
+    msg_len    = 5 + len(msg_payload)
+    msg_seqno += 1
+    msg_status = 0
+    msg = [msg_type, msg_len, msg_seqno, varid, msg_status] + msg_payload
+
+    # setup hci command
+    hci_payload_descriptor = 0xc2
+    hci_param_len          = len(msg) * 2 + 1
+    hci_cmd = [ 0x00, 0xfc, hci_param_len, hci_payload_descriptor]
+
+    # convert list of uint16_t to sequence of uint8_t in little endian
+    for value in msg:
+        hci_cmd.append(value & 0xff)
+        hci_cmd.append(value >> 8)
+
+    fout.write(indent + ', '.join(["0x%02x" % val for val in hci_cmd]) + ',\n')
+
+def write_key(fout, key, value):
+    # setup ps command
+    payload_len = len(value)
+    stores   = 0x0008 # psram
+    ps_cmd = [key, payload_len, stores] + value
+
+    # write ps command
+    write_set_varid_cmd(fout, 0x7003, ps_cmd)
+
+def write_warm_reset(fout):
+    write_verbatim(fout, indent + "// WarmReset")
+    write_set_varid_cmd(fout, 0x4002, [])
+
+
+# check args
+if len(sys.argv) != 2:
+    print(usage)
+    sys.exit(1)
+
+prs_file = sys.argv[1]
+fout     = sys.stdout
+
+with open (prs_file, 'rb') as fin:
+    for line_with_nl in fin:
+        line = line_with_nl.strip()
+        if line.startswith('&'):
+            # pskey
+            parts = line.split('=')
+            key = int(parts[0].strip().replace('&','0x'), 16)
+            value = [int('0x'+i, 16) for i in parts[1].strip().split(' ')]
+            write_key(fout, key, value)
+        elif line.startswith('#'):
+            #ifdef, ..
+            write_verbatim(fout, line)
+        else:
+            # comments
+            write_verbatim(fout, indent + line)
+
+write_warm_reset(fout)