On Raspberry Pi
by Mark Morgan Lloyd
Is it possible to put OpenFirmware on an SD card and use it to boot off
e.g. a USB-attached mass storage device or using TFTP over a LAN?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
4 years
[commit] r3651 - cpu/x86/pc/olpc/via dev
by repository service
Author: quozl
Date: Mon Apr 29 08:02:14 2013
New Revision: 3651
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3651
Log:
OLPC XO-1 - suppress the RTC amnesia check introduced in r3649, because the VRT bit works fine, and the century value at 0x1a is occasionally cleared by a power cycle. This clearing is ingored by ds1385r.fth get-time, which forces the returned century to 0x20. Curiously, the century value at 0x32 (as set by MSR 5140.0057) is not used in ds1385r.fth, and keeps what Linux set it to.
Modified:
cpu/x86/pc/olpc/via/config.fth
dev/ds1385r.fth
Modified: cpu/x86/pc/olpc/via/config.fth
==============================================================================
--- cpu/x86/pc/olpc/via/config.fth Mon Apr 29 07:55:38 2013 (r3650)
+++ cpu/x86/pc/olpc/via/config.fth Mon Apr 29 08:02:14 2013 (r3651)
@@ -3,6 +3,7 @@
create olpc \ OLPC-specific build
create olpc-cl1
+create olpc-xo-1.5
create compute-timings
\ create demo-board
Modified: dev/ds1385r.fth
==============================================================================
--- dev/ds1385r.fth Mon Apr 29 07:55:38 2013 (r3650)
+++ dev/ds1385r.fth Mon Apr 29 08:02:14 2013 (r3651)
@@ -88,6 +88,7 @@
cr
then
;
+[ifdef] olpc-xo-1.5
\ : $?lost ( flag head$ -- flag )
\ 2 pick if ." RTC amnesia - " type cr else 2drop then
\ ;
@@ -112,6 +113,7 @@
d# 10 rtc@ h# 70 and rega-mode h# 70 and <> \ " divider" $?lost
or
;
+[then]
: reinit
h# 20 h# 1a rtc! \ century
h# 13 h# 9 rtc! \ year
@@ -128,7 +130,9 @@
: open ( -- true )
my-unit 2 " map-in" $call-parent is rtc-adr
first-open? if
- amnesia? if reinit then
+ [ifdef] olpc-xo-1.5
+ amnesia? if reinit then
+ [then]
rega-mode d# 10 rtc!
regb-mode d# 11 rtc!
\ If the battery is bad, display a message, but go open the device anyway
5 years, 8 months
[commit] r3650 - in cpu/x86/pc/olpc: . via
by repository service
Author: quozl
Date: Mon Apr 29 07:55:38 2013
New Revision: 3650
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3650
Log:
OLPC XO-1 XO-1.5 - maintain the NFS RPC XID in CMOS RAM, so that scripted NFS actions do not fail silently. Different location used for XO-1 because the default location is reset by a power cycle. #12662.
Modified:
cpu/x86/pc/olpc/fw.bth
cpu/x86/pc/olpc/via/fw.bth
Modified: cpu/x86/pc/olpc/fw.bth
==============================================================================
--- cpu/x86/pc/olpc/fw.bth Sat Apr 27 07:47:57 2013 (r3649)
+++ cpu/x86/pc/olpc/fw.bth Mon Apr 29 07:55:38 2013 (r3650)
@@ -377,6 +377,11 @@
fload ${BP}/cpu/x86/pc/olpc/sound.fth
fload ${BP}/cpu/x86/pc/olpc/guardrtc.fth
fload ${BP}/cpu/x86/pc/olpc/security.fth
+stand-init: xid
+ h# 83 cmos@ dup 1+ h# 83 cmos! ( n )
+ d# 24 lshift ( new-xid )
+ " dev /obp-tftp to rpc-xid dend" evaluate
+;
fload ${BP}/cpu/x86/pc/olpc/xpsecure.fth
fload ${BP}/ofw/gui/ofpong.fth
fload ${BP}/cpu/x86/pc/olpc/life.fth
Modified: cpu/x86/pc/olpc/via/fw.bth
==============================================================================
--- cpu/x86/pc/olpc/via/fw.bth Sat Apr 27 07:47:57 2013 (r3649)
+++ cpu/x86/pc/olpc/via/fw.bth Mon Apr 29 07:55:38 2013 (r3650)
@@ -431,6 +431,11 @@
fload ${BP}/cpu/x86/pc/olpc/via/sound.fth
fload ${BP}/cpu/x86/pc/olpc/guardrtc.fth
fload ${BP}/cpu/x86/pc/olpc/security.fth
+stand-init: xid
+ h# 84 cmos@ dup 1+ h# 84 cmos! ( n )
+ d# 24 lshift ( new-xid )
+ " dev /obp-tftp to rpc-xid dend" evaluate
+;
fload ${BP}/cpu/x86/pc/olpc/xpsecure.fth
fload ${BP}/ofw/gui/ofpong.fth
fload ${BP}/cpu/x86/pc/olpc/life.fth
5 years, 8 months
[commit] r3649 - dev
by repository service
Author: quozl
Date: Sat Apr 27 07:47:57 2013
New Revision: 3649
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3649
Log:
OLPC XO-1.5 - the Valid RAM and Time (VRT) bit in RTC register 0xd can't be trusted on the XO-1.5, so use other means to detect loss of data. This works in most cases, but there is still the possibility of data corruption when the battery is missing or discharged. #12600.
Modified:
dev/ds1385r.fth
Modified: dev/ds1385r.fth
==============================================================================
--- dev/ds1385r.fth Thu Apr 18 06:11:10 2013 (r3648)
+++ dev/ds1385r.fth Sat Apr 27 07:47:57 2013 (r3649)
@@ -88,6 +88,30 @@
cr
then
;
+\ : $?lost ( flag head$ -- flag )
+\ 2 pick if ." RTC amnesia - " type cr else 2drop then
+\ ;
+: amnesia? ( -- flag )
+ 0 rtc@ h# 59 > \ " seconds" $?lost
+ 2 rtc@ h# 59 > \ " minutes" $?lost
+ or
+ 4 rtc@ h# 23 > \ " hours" $?lost
+ or
+ 6 rtc@ h# 10 = \ " day of week" $?lost
+ or
+ 7 rtc@ dup 0= swap h# 31 > or \ " day of month" $?lost
+ or
+ 8 rtc@ dup 0= swap h# 12 > or \ " month" $?lost
+ or
+ 9 rtc@ h# 99 > \ " year high" $?lost
+ or
+ 9 rtc@ h# 13 < \ " year low" $?lost
+ or
+ h# 1a rtc@ h# 20 <> \ " century" $?lost
+ or
+ d# 10 rtc@ h# 70 and rega-mode h# 70 and <> \ " divider" $?lost
+ or
+;
: reinit
h# 20 h# 1a rtc! \ century
h# 13 h# 9 rtc! \ year
@@ -104,6 +128,7 @@
: open ( -- true )
my-unit 2 " map-in" $call-parent is rtc-adr
first-open? if
+ amnesia? if reinit then
rega-mode d# 10 rtc!
regb-mode d# 11 rtc!
\ If the battery is bad, display a message, but go open the device anyway
5 years, 8 months
[commit] r3648 - cpu/arm/olpc/1.75
by repository service
Author: quozl
Date: Thu Apr 18 06:11:10 2013
New Revision: 3648
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3648
Log:
Q4D29
Modified:
cpu/arm/olpc/1.75/fw-version.fth
Modified: cpu/arm/olpc/1.75/fw-version.fth
==============================================================================
--- cpu/arm/olpc/1.75/fw-version.fth Thu Apr 18 06:01:13 2013 (r3647)
+++ cpu/arm/olpc/1.75/fw-version.fth Thu Apr 18 06:11:10 2013 (r3648)
@@ -1,7 +1,7 @@
\ The overall firmware revision
macro: FW_PREFIX Q4
macro: FW_MAJOR D
-macro: FW_MINOR 28
+macro: FW_MINOR 29
\ Create a 2-character build/fw-suffix file to personalize your test builds
" fw-suffix" $file-exists? [if]
5 years, 9 months
[commit] r3647 - cpu/x86/pc/olpc/via
by repository service
Author: quozl
Date: Thu Apr 18 06:01:13 2013
New Revision: 3647
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3647
Log:
Q3C13
Modified:
cpu/x86/pc/olpc/via/fw-version.fth
Modified: cpu/x86/pc/olpc/via/fw-version.fth
==============================================================================
--- cpu/x86/pc/olpc/via/fw-version.fth Thu Apr 18 05:46:02 2013 (r3646)
+++ cpu/x86/pc/olpc/via/fw-version.fth Thu Apr 18 06:01:13 2013 (r3647)
@@ -1,6 +1,6 @@
\ The overall firmware revision
macro: FW_MAJOR C
-macro: FW_MINOR 12
+macro: FW_MINOR 13
\ Create a 2-character build/fw-suffix file to personalize your test builds
" fw-suffix" $file-exists? [if]
5 years, 9 months
[commit] r3646 - cpu/x86/pc/olpc
by repository service
Author: quozl
Date: Thu Apr 18 05:46:02 2013
New Revision: 3646
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3646
Log:
Q2F17
Modified:
cpu/x86/pc/olpc/versions.fth
Modified: cpu/x86/pc/olpc/versions.fth
==============================================================================
--- cpu/x86/pc/olpc/versions.fth Thu Apr 18 05:44:59 2013 (r3645)
+++ cpu/x86/pc/olpc/versions.fth Thu Apr 18 05:46:02 2013 (r3646)
@@ -2,7 +2,7 @@
\ The overall firmware revision
macro: FW_MAJOR F
-macro: FW_MINOR 16
+macro: FW_MINOR 17
\ Create a 2-character build/fw-suffix file to personalize your test builds
" fw-suffix" $file-exists? [if]
5 years, 9 months
[commit] r3645 - in cpu/arm: mmp3 olpc
by repository service
Author: quozl
Date: Thu Apr 18 05:44:59 2013
New Revision: 3645
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3645
Log:
OLPC XO-4 - add device-tree entries in /pcm to describe allocation of audio SRAM, used by kernel only. Open Firmware uses other allocations. #12400
Modified:
cpu/arm/mmp3/soc-config.fth
cpu/arm/olpc/sound.fth
Modified: cpu/arm/mmp3/soc-config.fth
==============================================================================
--- cpu/arm/mmp3/soc-config.fth Tue Apr 16 04:16:23 2013 (r3644)
+++ cpu/arm/mmp3/soc-config.fth Thu Apr 18 05:44:59 2013 (r3645)
@@ -8,4 +8,8 @@
h# 2.0000 constant /audio-sram
\ No need to map audio-sram separately; it fits in the SRAM area
+d# 4096 constant /audio-sram-dma \ space for DMA descriptors
+d# 2048 constant /audio-sram-mps \ maximum period size
+/audio-sram /audio-sram-dma - 2 / constant /audio-sram-pcm \ buffers
+
h# 0005.0000 constant /sram \ Size of SRAM
Modified: cpu/arm/olpc/sound.fth
==============================================================================
--- cpu/arm/olpc/sound.fth Tue Apr 16 04:16:23 2013 (r3644)
+++ cpu/arm/olpc/sound.fth Thu Apr 18 05:44:59 2013 (r3645)
@@ -81,6 +81,25 @@
\ the Audio DMA resources
" marvell,mmp-pcm-audio" +compatible \ snd_soc_dai_link.cpu_dai_of_node
+[ifdef] mmp3
+ \ Our asram node (below) declares that /audio-sram bytes of SRAM
+ \ are assigned to the audio function. We divide that here, roughly
+ \ half to playback and half to recording.
+
+ \ Even though we choose big buffers, we do leave a little bit of
+ \ free space for the DMA engine which also needs to use a bit of
+ \ the SRAM area for DMA descriptors. Therefore we choose 62kb for
+ \ each buffer, leaving 4kb available for DMA descriptors.
+
+ \ For the max period size, we don't have any justification other
+ \ than 2048 is the value we've been using all along.
+
+ /audio-sram-pcm encode-int
+ /audio-sram-mps encode-int encode+
+ /audio-sram-pcm encode-int encode+
+ /audio-sram-mps encode-int encode+
+ " marvell,buffer-sizes" property
+[then]
finish-device
new-device
5 years, 9 months
[commit] r3644 - ofw/fs/cdfs
by repository service
Author: quozl
Date: Tue Apr 16 04:16:23 2013
New Revision: 3644
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3644
Log:
cdfs, make search of ISO 9660 filesystems case blind, by uppercasing the name being sought. FAT filesystem access already does this.
Modified:
ofw/fs/cdfs/cdfs.fth
Modified: ofw/fs/cdfs/cdfs.fth
==============================================================================
--- ofw/fs/cdfs/cdfs.fth Mon Apr 15 04:11:14 2013 (r3643)
+++ ofw/fs/cdfs/cdfs.fth Tue Apr 16 04:16:23 2013 (r3644)
@@ -143,6 +143,7 @@
: lookup ( adr len -- not-found? )
canonical-name
+ 2dup upper
begin
another-file?
while
5 years, 9 months
[commit] r3643 - cpu/arm/olpc/4.0
by repository service
Author: quozl
Date: Mon Apr 15 04:11:14 2013
New Revision: 3643
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3643
Log:
Q7B29
Modified:
cpu/arm/olpc/4.0/fw-version.fth
Modified: cpu/arm/olpc/4.0/fw-version.fth
==============================================================================
--- cpu/arm/olpc/4.0/fw-version.fth Fri Apr 12 08:10:55 2013 (r3642)
+++ cpu/arm/olpc/4.0/fw-version.fth Mon Apr 15 04:11:14 2013 (r3643)
@@ -1,7 +1,7 @@
\ The overall firmware revision
macro: FW_PREFIX Q7
macro: FW_MAJOR B
-macro: FW_MINOR 28
+macro: FW_MINOR 29
\ Create a 2-character build/fw-suffix file to personalize your test builds
" fw-suffix" $file-exists? [if]
5 years, 9 months
