changeset 632:ae4330d86029

loadtool.help: description of program-m0 updated
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 29 Feb 2020 23:53:33 +0000 (2020-02-29)
parents bdb69847c809
children 4dca8542f569
files loadtools/loadtool.help
diffstat 1 files changed, 5 insertions(+), 11 deletions(-) [+]
line wrap: on
line diff
--- a/loadtools/loadtool.help	Sat Feb 29 21:34:03 2020 +0000
+++ b/loadtools/loadtool.help	Sat Feb 29 23:53:33 2020 +0000
@@ -276,17 +276,11 @@
 === flash:program-m0
 flash[2] program-m0 image.m0
 
-*.m0 is the format that has been used by companies like TI and Closedmoko for
-their proprietary firmware images.  It is emitted by TI's hex470 tool, and in
-the proprietary environment it is fed as an input to FLUID.  (The latter is
-TI's Flash Loader Utility Independent of Device, and fc-loadtool can be seen as
-an independent reimplementation thereof - although it doesn't have the same
-level of device-independence.)  The *.m0 format is actually a variant of
-Motorola's SREC, but with a different byte order: each 16-bit word is
-byte-reversed relative to the native byte order of the ARM7 processor.
-(This strange byte order actually makes some sense if one views the image as a
-long array of 16-bit hex values; 16 bits is the width of the flash memory on
-Calypso GSM devices and thus the natural unit size for flash programming.)
+Calypso firmware images built with TI's TMS470 toolchain in TI's canonical
+manner come out in a hex format that is a variant of Motorola's SREC, in files
+ending with the .m0 suffix.  We have nicknamed this format "moko-style m0"
+after its most famous user; this command programs the flash with an image in
+this moko-style m0 format.
 
 Because each S-record contains an address, no addresses or offsets need to be
 specified in the flash[2] program-m0 command, only the image file.