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Dmesg can now be dumped by 'make dmesg'. Close #45.

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This commit is contained in:
Travis Goodspeed 2017-11-18 14:56:46 -05:00
parent 4f4c548118
commit 06981f15d9
4 changed files with 22 additions and 16 deletions
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15
bin/cc430-bsl.py
View File

@ -11,7 +11,7 @@ import serial, time, sys, argparse, progressbar;
class BSL:
def __init__(self, port):
print("Opening %s" % port);
#print("Opening %s" % port);
self.serial=serial.Serial(port,
baudrate=9600,
parity=serial.PARITY_EVEN,
@ -107,9 +107,7 @@ class BSL:
#Password must be 32 bytes; read from a file otherwise.
if len(password)!=32:
print "Loading password from %s." % password;
password=self.passwordfromfile(password);
print len(password);
assert(len(password)==32);
@ -260,14 +258,11 @@ def coredump(bsl):
print bulk.encode('hex');
def dmesg(bsl):
"""Prints all of memory."""
"""Prints the dmesg buffer."""
print "\n\n\nDumping most of memory as a read test.";
##Dump RAM
bulk=bsl.readbulk(0x1C00,4096)
print "Got %d bytes of RAM." % len(bulk);
print bulk.encode('hex');
bulk=bsl.readbulk(0x2400,2048)
print bulk;
def writetest(bsl):
"""Tests writing an image to Flash."""
@ -303,7 +298,7 @@ if __name__=='__main__':
bsl.masserase();
bsl.unlock();
if args.unlock!=None:
print "Unlocking."
#print "Unlocking."
bsl.unlock(args.password);
if args.file!=None:
print "Writing %s as Intel hex." % args.file

2
firmware/Makefile
View File

@ -28,5 +28,7 @@ erase:
$(BSL) -e
flash: goodwatch.hex
$(BSL) -etf goodwatch.hex
dmesg:
../bin/cc430-bsl.py -P goodwatch.hex -uD

12
firmware/dmesg.c
View File

@ -5,7 +5,7 @@
#include<stdio.h>
#include<string.h>
#define DMESGLEN 1024
#define DMESGLEN 2048
/* These three buffers are declared to be in the .noinit section so
that a reboot will not wipe the buffer. Because the memory will be
@ -13,12 +13,13 @@
startup if the magic is corrupted or if the index is unreasonable.
*/
//! DMESG buffer itself.
char dmesg_buffer[DMESGLEN] __attribute__ ((section (".noinit")));
//! Index within that buffer.
int dmesg_index __attribute__ ((section (".noinit")));
//! Ought to be 0xdeadbeef except after power loss.
uint32_t dmesg_magic __attribute__ ((section (".noinit")));
//! Index within that buffer.
int dmesg_index __attribute__ ((section (".noinit")));
//! DMESG buffer itself.
char *dmesg_buffer=(char*)0x2400;
//! Writes a character to the dmesg buffer.
int putchar(int c){
@ -36,4 +37,5 @@ void dmesg_clear(){
void dmesg_init(){
if(dmesg_magic!=0xdeadbeef || dmesg_index>=DMESGLEN)
dmesg_clear();
printf("dmesg_init();\n");
}

9
firmware/memory.x
View File

@ -1,3 +1,7 @@
/*! \file memory.x
\brief Fork of linker script to reserve 2kB for dmesg.
*/
MEMORY {
sfr : ORIGIN = 0x0000, LENGTH = 0x0010 /* END=0x0010, size 16 */
peripheral_8bit : ORIGIN = 0x0010, LENGTH = 0x00f0 /* END=0x0100, size 240 */
@ -8,7 +12,9 @@ MEMORY {
infoc : ORIGIN = 0x1880, LENGTH = 0x0080 /* END=0x1900, size 128 */
infob : ORIGIN = 0x1900, LENGTH = 0x0080 /* END=0x1980, size 128 */
infoa : ORIGIN = 0x1980, LENGTH = 0x0080 /* END=0x1a00, size 128 */
ram (wx) : ORIGIN = 0x1c00, LENGTH = 0x0ffe /* END=0x2bfe, size 4094 */
/*ram (wx) : ORIGIN = 0x1c00, LENGTH = 0x0ffe /* END=0x2bfe, size 4094 */
ram (wx) : ORIGIN = 0x1c00, LENGTH = 0x0800 /* We use half of RAM for C code. */
dmesg (wx) : ORIGIN = 0x2400, LENGTH = 0x0800 /* Second half just for dmesg. */
rom (rx) : ORIGIN = 0x8000, LENGTH = 0x7f80 /* END=0xff80, size 32640 */
vectors : ORIGIN = 0xff80, LENGTH = 0x0080 /* END=0x10000, size 128 as 64 2-byte segments */
/* Remaining banks are absent */
@ -19,6 +25,7 @@ MEMORY {
}
REGION_ALIAS("REGION_TEXT", rom);
REGION_ALIAS("REGION_DATA", ram);
REGION_ALIAS("REGION_DMESG", dmesg);
REGION_ALIAS("REGION_FAR_ROM", far_rom);
PROVIDE (__info_segment_size = 0x80);
PROVIDE (__infod = 0x1800);