OpenBIOS April 2015

openbios@openbios.org

10 participants
28 discussions

[PATCH] bootinfo_init_program: improve memory allocation efficiency
by Cormac O'Brien 20 Apr '15

20 Apr '15

Here's v2, with the debug macro untouched. --- libopenbios/bootinfo_load.c | 100 +++++++++++++++++++++++++++++--------------- 1 file changed, 66 insertions(+), 34 deletions(-) diff --git a/libopenbios/bootinfo_load.c b/libopenbios/bootinfo_load.c index fa9e36b..855b5dc 100644 --- a/libopenbios/bootinfo_load.c +++ b/libopenbios/bootinfo_load.c @@ -134,12 +134,13 @@ bootinfo_init_program(void) char *base; int proplen; phandle_t chosen; - int tag, taglen, script, scriptlen, scriptvalid, entity, chrp; + int tag, taglen, script, scriptind, scriptlen, scriptstart, scriptvalid, + entity, chrp; char tagbuf[128], c; char *device, *filename, *directory, *partition; int current, size; char *bootscript; - char *tmp; + char *tmp; char bootpath[1024]; /* Parse the boot script */ @@ -158,21 +159,14 @@ bootinfo_init_program(void) feval("load-base"); base = (char*)cell2pointer(POP()); - feval("load-size"); - size = POP(); - - bootscript = malloc(size); - if (bootscript == NULL) { - DPRINTF("Can't malloc %d bytes\n", size); - return; - } - if (!is_bootinfo(base)) { DPRINTF("Not a valid bootinfo memory image\n"); - free(bootscript); return; } + feval("load-size"); + size = POP(); + chrp = 0; tag = 0; taglen = 0; @@ -198,16 +192,10 @@ bootinfo_init_program(void) if (strncasecmp(tagbuf, "boot-script", 11) == 0) { script = 1; scriptlen = 0; + scriptstart = current; } else if (strncasecmp(tagbuf, "/boot-script", 12) == 0) { - script = 0; - bootscript[scriptlen] = '\0'; - - DPRINTF("got bootscript %s\n", - bootscript); - scriptvalid = -1; - break; } else if (strncasecmp(tagbuf, "/chrp-boot", 10) == 0) break; @@ -217,42 +205,86 @@ bootinfo_init_program(void) } else if (script && c == '&') { entity = 1; taglen = 0; - } else if (entity && c ==';') { + } else if (entity && c == ';') { entity = 0; tagbuf[taglen] = '\0'; if (strncasecmp(tagbuf, "lt", 2) == 0) { - bootscript[scriptlen++] = '<'; + scriptlen++; } else if (strncasecmp(tagbuf, "gt", 2) == 0) { - bootscript[scriptlen++] = '>'; + scriptlen++; } else if (strncasecmp(tagbuf, "device", 6) == 0) { - strcpy(bootscript + scriptlen, device); scriptlen += strlen(device); } else if (strncasecmp(tagbuf, "partition", 9) == 0) { - strcpy(bootscript + scriptlen, partition); scriptlen += strlen(partition); } else if (strncasecmp(tagbuf, "directory", 9) == 0) { - strcpy(bootscript + scriptlen, directory); scriptlen += strlen(directory); } else if (strncasecmp(tagbuf, "filename", 8) == 0) { - strcpy(bootscript + scriptlen, filename); scriptlen += strlen(filename); } else if (strncasecmp(tagbuf, "full-path", 9) == 0) { - strcpy(bootscript + scriptlen, bootpath); scriptlen += strlen(bootpath); - } else { /* unknown, keep it */ - bootscript[scriptlen] = '&'; - strcpy(bootscript + scriptlen + 1, tagbuf); - scriptlen += taglen + 1; - bootscript[scriptlen] = ';'; - scriptlen++; + } else { + scriptlen += taglen + 2; } } else if (entity && taglen < sizeof(tagbuf)) { tagbuf[taglen++] = c; } else if (script && scriptlen < size) { - bootscript[scriptlen++] = c; + scriptlen++; + } + } + + bootscript = malloc(scriptlen * sizeof *bootscript + 1); + if (bootscript == NULL) { + DPRINTF("Can't malloc %d bytes\n", size); + return; + } + + entity = 0; + scriptind = 0; + taglen = 0; + current = scriptstart; + while (current < scriptstart + scriptlen) { + c = base[current++]; + + if (c == '&') { + entity = 1; + taglen = 0; + } else if (entity && c == ';') { + entity = 0; + tagbuf[taglen] = '\0'; + if (strncasecmp(tagbuf, "lt", 2) == 0) { + bootscript[scriptind++] = '<'; + } else if (strncasecmp(tagbuf, "gt", 2) == 0) { + bootscript[scriptind++] = '>'; + } else if (strncasecmp(tagbuf, "device", 6) == 0) { + strcpy(bootscript + scriptind, device); + scriptind += strlen(device); + } else if (strncasecmp(tagbuf, "partition", 9) == 0) { + strcpy(bootscript + scriptind, partition); + scriptind += strlen(partition); + } else if (strncasecmp(tagbuf, "directory", 9) == 0) { + strcpy(bootscript + scriptind, directory); + scriptind += strlen(directory); + } else if (strncasecmp(tagbuf, "filename", 8) == 0) { + strcpy(bootscript + scriptind, filename); + scriptlen += strlen(filename); + } else if (strncasecmp(tagbuf, "full-path", 9) == 0) { + strcpy(bootscript + scriptind, bootpath); + scriptlen += strlen(bootscript); + } else { /* unknown, keep it */ + bootscript[scriptind++] = '&'; + strcpy(bootscript + scriptind, tagbuf); + scriptind += taglen; + bootscript[scriptind++] = ';'; + } + } else if (entity && taglen < sizeof(tagbuf)) { + tagbuf[taglen++] = c; + } else { + bootscript[scriptind++] = c; } } + bootscript[scriptlen] = '\0'; + /* If the payload is bootinfo then we execute it immediately */ if (scriptvalid) { DPRINTF("bootscript: %s\n", bootscript); -- 2.3.5

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[PATCH] gives the fcode-utils an install target
by Programmingkid 20 Apr '15

20 Apr '15

This patch gives the fcode-utils' toke, detok, and romheaders commands an install target. This makes "make install" work. signed-off-by: John Arbuckle <programmingkidx(a)gmail.com> Index: detok/Makefile =================================================================== --- detok/Makefile (revision 1334) +++ detok/Makefile (working copy) @@ -63,3 +63,5 @@ .c.o: $(CC) -c $(CFLAGS) $(INCLUDES) $< -o $@ +install: + cp ./$(PROGRAM) /usr/local/bin/$(PROGRAM) Index: romheaders/Makefile =================================================================== --- romheaders/Makefile (revision 1334) +++ romheaders/Makefile (working copy) @@ -22,6 +22,8 @@ # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA # +PROGRAM=romheaders + CC ?= gcc STRIP = strip CFLAGS = -O2 -Wall -Wextra @@ -40,3 +42,6 @@ clean: rm -f *~ rm -f romheaders + +install: + cp ./$(PROGRAM) /usr/local/bin/$(PROGRAM) Index: toke/Makefile =================================================================== --- toke/Makefile (revision 1334) +++ toke/Makefile (working copy) @@ -73,3 +73,5 @@ .c.o: $(CC) -c $(CFLAGS) $(INCLUDES) $< -o $@ +install: + cp ./$(PROGRAM) /usr/local/bin/$(PROGRAM)

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[PATCH] bootinfo_init_program: improve memory allocation efficiency
by Cormac O'Brien 19 Apr '15

19 Apr '15

This patch provides a more memory-efficient method of allocating memory for the boot script by using the actual script length (including entity translations) instead of the file size. Signed-off-by: Cormac O'Brien <i.am.cormac.obrien(a)gmail.com> --- libopenbios/bootinfo_load.c | 102 +++++++++++++++++++++++++++++--------------- 1 file changed, 67 insertions(+), 35 deletions(-) diff --git a/libopenbios/bootinfo_load.c b/libopenbios/bootinfo_load.c index fa9e36b..bd282f4 100644 --- a/libopenbios/bootinfo_load.c +++ b/libopenbios/bootinfo_load.c @@ -20,7 +20,7 @@ #include "libopenbios/ofmem.h" #include "libc/vsprintf.h" -//#define DEBUG_BOOTINFO +#define DEBUG_BOOTINFO #ifdef DEBUG_BOOTINFO #define DPRINTF(fmt, args...) \ @@ -134,12 +134,13 @@ bootinfo_init_program(void) char *base; int proplen; phandle_t chosen; - int tag, taglen, script, scriptlen, scriptvalid, entity, chrp; + int tag, taglen, script, scriptind, scriptlen, scriptstart, scriptvalid, + entity, chrp; char tagbuf[128], c; char *device, *filename, *directory, *partition; int current, size; char *bootscript; - char *tmp; + char *tmp; char bootpath[1024]; /* Parse the boot script */ @@ -158,21 +159,14 @@ bootinfo_init_program(void) feval("load-base"); base = (char*)cell2pointer(POP()); - feval("load-size"); - size = POP(); - - bootscript = malloc(size); - if (bootscript == NULL) { - DPRINTF("Can't malloc %d bytes\n", size); - return; - } - if (!is_bootinfo(base)) { DPRINTF("Not a valid bootinfo memory image\n"); - free(bootscript); return; } + feval("load-size"); + size = POP(); + chrp = 0; tag = 0; taglen = 0; @@ -198,16 +192,10 @@ bootinfo_init_program(void) if (strncasecmp(tagbuf, "boot-script", 11) == 0) { script = 1; scriptlen = 0; + scriptstart = current; } else if (strncasecmp(tagbuf, "/boot-script", 12) == 0) { - script = 0; - bootscript[scriptlen] = '\0'; - - DPRINTF("got bootscript %s\n", - bootscript); - scriptvalid = -1; - break; } else if (strncasecmp(tagbuf, "/chrp-boot", 10) == 0) break; @@ -217,42 +205,86 @@ bootinfo_init_program(void) } else if (script && c == '&') { entity = 1; taglen = 0; - } else if (entity && c ==';') { + } else if (entity && c == ';') { entity = 0; tagbuf[taglen] = '\0'; if (strncasecmp(tagbuf, "lt", 2) == 0) { - bootscript[scriptlen++] = '<'; + scriptlen++; } else if (strncasecmp(tagbuf, "gt", 2) == 0) { - bootscript[scriptlen++] = '>'; + scriptlen++; } else if (strncasecmp(tagbuf, "device", 6) == 0) { - strcpy(bootscript + scriptlen, device); scriptlen += strlen(device); } else if (strncasecmp(tagbuf, "partition", 9) == 0) { - strcpy(bootscript + scriptlen, partition); scriptlen += strlen(partition); } else if (strncasecmp(tagbuf, "directory", 9) == 0) { - strcpy(bootscript + scriptlen, directory); scriptlen += strlen(directory); } else if (strncasecmp(tagbuf, "filename", 8) == 0) { - strcpy(bootscript + scriptlen, filename); scriptlen += strlen(filename); } else if (strncasecmp(tagbuf, "full-path", 9) == 0) { - strcpy(bootscript + scriptlen, bootpath); scriptlen += strlen(bootpath); - } else { /* unknown, keep it */ - bootscript[scriptlen] = '&'; - strcpy(bootscript + scriptlen + 1, tagbuf); - scriptlen += taglen + 1; - bootscript[scriptlen] = ';'; - scriptlen++; + } else { + scriptlen += taglen + 2; } } else if (entity && taglen < sizeof(tagbuf)) { tagbuf[taglen++] = c; } else if (script && scriptlen < size) { - bootscript[scriptlen++] = c; + scriptlen++; + } + } + + bootscript = malloc(scriptlen * sizeof *bootscript + 1); + if (bootscript == NULL) { + DPRINTF("Can't malloc %d bytes\n", size); + return; + } + + entity = 0; + scriptind = 0; + taglen = 0; + current = scriptstart; + while (current < scriptstart + scriptlen) { + c = base[current++]; + + if (c == '&') { + entity = 1; + taglen = 0; + } else if (entity && c == ';') { + entity = 0; + tagbuf[taglen] = '\0'; + if (strncasecmp(tagbuf, "lt", 2) == 0) { + bootscript[scriptind++] = '<'; + } else if (strncasecmp(tagbuf, "gt", 2) == 0) { + bootscript[scriptind++] = '>'; + } else if (strncasecmp(tagbuf, "device", 6) == 0) { + strcpy(bootscript + scriptind, device); + scriptind += strlen(device); + } else if (strncasecmp(tagbuf, "partition", 9) == 0) { + strcpy(bootscript + scriptind, partition); + scriptind += strlen(partition); + } else if (strncasecmp(tagbuf, "directory", 9) == 0) { + strcpy(bootscript + scriptind, directory); + scriptind += strlen(directory); + } else if (strncasecmp(tagbuf, "filename", 8) == 0) { + strcpy(bootscript + scriptind, filename); + scriptlen += strlen(filename); + } else if (strncasecmp(tagbuf, "full-path", 9) == 0) { + strcpy(bootscript + scriptind, bootpath); + scriptlen += strlen(bootscript); + } else { /* unknown, keep it */ + bootscript[scriptind++] = '&'; + strcpy(bootscript + scriptind, tagbuf); + scriptind += taglen; + bootscript[scriptind++] = ';'; + } + } else if (entity && taglen < sizeof(tagbuf)) { + tagbuf[taglen++] = c; + } else { + bootscript[scriptind++] = c; } } + bootscript[scriptlen] = '\0'; + /* If the payload is bootinfo then we execute it immediately */ if (scriptvalid) { DPRINTF("bootscript: %s\n", bootscript); -- 2.3.5

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[PATCH] adds reservation-grandule-size property to cpu's node
by Programmingkid 18 Apr '15

18 Apr '15

Recent results have indicated that the cpu's node needs a reservation-granule-size property. This patch adds one. The value of 0x20 is used because it is the value found on real hardware. Signed-Off-By: John Arbuckle <programmingkidx(a)gmail.com> Index: arch/ppc/qemu/init.c =================================================================== --- arch/ppc/qemu/init.c (revision 1334) +++ arch/ppc/qemu/init.c (working copy) @@ -287,6 +287,11 @@ fword("encode-int"); push_str("timebase-frequency"); fword("property"); + + PUSH(0x20); + fword("encode-int"); + push_str("reservation-granule-size"); + fword("property"); PUSH(fw_cfg_read_i32(FW_CFG_PPC_CLOCKFREQ)); fword("encode-int");

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Re: [OpenBIOS] Allow building on Mac OS X
by BALATON Zoltan 17 Apr '15

17 Apr '15

On Mon, 13 Apr 2015, Programmingkid wrote: >> * instead on disabling -Werror completely you may want to try >> -fno-strict-aliasing (and if possible only set it for the file which >> exhibits this problem but I'm not sure how to do that with the used >> build system). The usb driver came from coreboot and probably had this >> problem there already but I did not see these warnings. It may be a >> peculiarity of your compiler or build environment. > > There are differences between Apple's supplied gcc and what Linux users > usually use. That could be the reason for the errors on Mac OS X. If it > is possible to set that option for the problem file, I will try to do > so. Disabling Werror doesn't seem like such a big deal. Without it I can > see the warning messages and still continue compiling ... a win-win > situation. Warnings can sometimes hint at bugs so it's not something you can safely ignore. Werror makes sure we avoid what we can so if there's a way to disable just the one warning that causes problems and we know that can be ignored safely is better than allowing all warnings by disabling Werror in bulk. Are you trying to use the Apple supplied ppc cross compiler or did you install your own? >> * At least on OS X 10.9 /bin/sh is the same as /bin/bash and >> /usr/bin/uname -m returns x86_64 (the same as I get on Linux) so these >> changes should not be needed. (I did not check on older versions >> though.) > > The change from sh to bash was not to accommodate Mac OS X, it was to > fix a problem on Linux. This code > "filtered_list=${filtered_list:0:$end}" would fail on Debian Linux when > the sh shell was set. I read on stackoverflow.com that Linux usually has > sh set to Dash instead of bash. The switch in shells didn't cause > anymore problems, so it seems good. This depends on the linux distro, but it's true that if a script says #!/bin/sh it should avoid bash constructs and stick to plain sh or should name the shell it depends on. While bash is quite widespread I think it would be better to replace the above line with an awk construct that works with plain sh instead as described here: https://wiki.ubuntu.com/DashAsBinSh (Unless others here think it's OK to depend on bash instead.) >> Are you running a 32 bit OS and compile for 64-bit target on that? > Not doing that. Here is the output of uname -a: > > Linux debian 2.6.32-5-amd64 #1 SMP Sun Sep 23 10:07:46 UTC 2012 x86_64 > GNU/Linux Now I'm confused. The patch title said it was for building on OS X. On Mon, 13 Apr 2015, Programmingkid wrote: > I forgot to tell you that on Mac OS 10.6, uname -a only returns i386 on > an amd64 (64bit x86) system. This causes OpenBIOS to fail while > building. It looks like this issue has been corrected in Mac OS 10.9. OS X can run as either 32bit or 64bit (but still can run 64bit apps with the 32bit kernel) and 10.6 defaults to 32bit according to this: http://superuser.com/questions/161195/running-mac-os-x-10-6-but-uname-m-sho… so you probably have 32bit kernel and uname returns that. I think you can force booting 64bit if your machine supports it by holding 6 and 4 keys during boot or passing arch=x86_64 boot-arg to kernel. Does it make a difference it you boot with 64bit kernel? I thought it might be a problem building on a 32bit machine so I've tried compiling as 32bit on Linux (with linux32 that also switches uname to return i686) but it compiled without problems for me that way too (after removing obj-ppc directory and running switch-arch again). Regards, BALATON Zoltan

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[PATCH v2] Allow building on Mac OS X
by Programmingkid 17 Apr '15

17 Apr '15

This is version two of the patch that allows for building on Mac OS X. It addresses several issues that needed to be changed. This version has these changes: - Keeps sh as the shell to build OpenBIOS on. - Removed the prefix_specified() function. - Replaced Bash shell code with awk functionality. - Added error handling for missing -prefix and -arch values. - Allows for using more that one compiler even if the -prefix option is used. - Keeps the -Werror option. I would like to note that this patch has been tested on Debian Linux and Mac OS X. Index: config/scripts/switch-arch =================================================================== --- config/scripts/switch-arch (revision 1334) +++ config/scripts/switch-arch (working copy) @@ -6,7 +6,7 @@ MOLPATH=$HOME/mol-0.9.71 if [ x"$1" = x -o "$1" = "-help" ]; then - printf "Usage:\n $0 [arch-config]...\n" + printf "Usage:\n $0 [arch-config] [-arch architecture] [-prefix compiler prefix]\n" printf "arch-config values supported for native or cross compiled builds:\n" printf " amd64, ppc, sparc32, sparc64, x86\n\n" printf "Add \"unix-\" prefix to compile openbios-unix executable (native only)\n" @@ -13,7 +13,13 @@ printf "Add \"builtin-\" prefix to compile openbios-builtin executables\n\n" printf "Without prefixes, builtin and unix targets are selected\n\n" printf "Special targets: mol-ppc briq-ppc pearpc-ppc qemu-ppc qemu-ppc64 xbox-x86\n\n" - printf "Example: $0 builtin-sparc32 unix-amd64 builtin-amd64\n" + printf "Example: $0 builtin-sparc32 unix-amd64 builtin-amd64\n\n" + printf "The -arch option is used if your uname command does not output the correct\n" + printf "value for your system. This is an issue for some versions of Mac OS X.\n" + printf "Example: -arch amd64\n\n" + printf "The -prefix option is for specifying your compiler prefix.\n" + printf "If your compiler is called ppc-elf-gcc, then your prefix would be ppc-elf-\n" + printf "In this case you would use -prefix ppc-elf-\n\n" exit 0 fi @@ -89,17 +95,77 @@ CROSSCFLAGS=$cflags } + +## Determines if user specified an architecture ## +architecture_specified() +{ + for arg in $SCRIPT_ARGS + do + if [ "$arg" = "-arch" ] + then + return 1 + fi + done + return 0 +} + +## Returns the user specified architecture ## +get_specified_architecture() +{ + while [ "$1" != "" ] + do + if [ "$1" = "-arch" ] + then + shift + if [ "$1" ] + then + echo "$1" + else + echo "ERROR-MISSING-ARCHITECTURE!!!" + fi + return + fi + shift + done +} + archname() { - HOSTARCH=`uname -m | sed -e s/i.86/x86/ -e s/i86pc/x86/ \ - -e s/sun4u/sparc64/ -e s/sparc$/sparc32/ \ - -e s/arm.*/arm/ -e s/sa110/arm/ -e s/x86_64/amd64/ \ - -e "s/Power Macintosh/ppc/"` + architecture_specified $SCRIPT_ARGS + if [ "$?" -eq 1 ] + then + HOSTARCH=`get_specified_architecture $SCRIPT_ARGS` + else + HOSTARCH=`uname -m | sed -e s/i.86/x86/ -e s/i86pc/x86/ \ + -e s/sun4u/sparc64/ -e s/sparc$/sparc32/ \ + -e s/arm.*/arm/ -e s/sa110/arm/ -e s/x86_64/amd64/ \ + -e "s/Power Macintosh/ppc/"` + fi } +## Returns the user specified compiler prefix ## +get_specified_prefix() +{ + while [ "$1" != "" ] + do + if [ "$1" = "-prefix" ] + then + shift + if [ "$1" ] + then + echo "$1" + else + echo "MISSING-PREFIX-VALUE!!!" + fi + return + fi + shift + done +} + select_prefix() { - for TARGET in ${1}-unknown-linux-gnu- ${1}-linux-gnu- ${1}-linux- ${1}-elf- ${1}-eabi- + for TARGET in ${1}-unknown-linux-gnu- ${1}-linux-gnu- ${1}-linux- ${1}-elf- ${1}-eabi- $(get_specified_prefix $SCRIPT_ARGS) do if type ${TARGET}gcc > /dev/null 2>&1 then @@ -127,6 +193,7 @@ SRCDIR=`dirname "$0"`/../.. BUILDDIR=`pwd` +SCRIPT_ARGS=$* # needed for functions that need to know arguments send to this script # make source path absolute SRCDIR=`cd "$SRCDIR"; pwd` @@ -147,7 +214,34 @@ fi target_list="" -for target in $*; do + +# filters out the -prefix and -arch options from the target list +filtered_list=`awk -v arg_string="$*" 'BEGIN { + prefix_position = index(arg_string, "-prefix") + arch_position = index(arg_string, "-arch") + end = 0 # The end of the target list string before the other options + + ### Find the end of the substring to keep ### + + if(prefix_position == 0 && arch_position == 0) { + end = length(arg_string) + } + else if(prefix_position == 0) { + end = (arch_position - 1) + } + else if (arch_position == 0) { + end = (prefix_position - 1) + } + else if(arch_position < prefix_position) { + end = (arch_position - 1) + } + else { + end = (prefix_position - 1) + } + print substr(arg_string, 1, end) +}'` + +for target in $filtered_list; do case $target in unix-*|builtin-*|plain-*|mol-ppc|briq-ppc|pearpc-ppc|qemu-ppc|qemu-ppc64|xbox-x86) target_list="$target_list $target"

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Re: [OpenBIOS] Allow building on Mac OS X
by Programmingkid 17 Apr '15

17 Apr '15

On Apr 17, 2015, at 12:11 AM, Cormac O'Brien wrote: > The current version is 4.9.2; your version looks to be about three years old. > I think that could be the problem. If it is, then maybe we should document that a certain version of gcc is required to build OpenBIOS.

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Re: [OpenBIOS] Allow building on Mac OS X
by Cormac O'Brien 17 Apr '15

17 Apr '15

The current version is 4.9.2; your version looks to be about three years old.

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Re: [OpenBIOS] Allow building on Mac OS X
by Programmingkid 16 Apr '15

16 Apr '15

On Apr 14, 2015, at 1:11 AM, Cormac O'Brien wrote: >> I downloaded a cross compiler that was made to make ppc elf binaries. I >> don't think there is an Apple supplied ppc elf cross compiler. > > I'd suggest building your own binutils and gcc, it doesn't take too long and > usually works a bit better. It is such a pain to build gcc. I think it used up an entire day when I built gcc 4.9. That is an experience I hope never to repeat. Plus the cross compiler I downloaded works just fine, so there isn't really a need. > >>> (Unless others here think it's OK to depend on bash instead.) >> Come on people, switch to bash. It's better. What would we miss if we did >> switch to bash? > > I think there are probably quite a few people on tcsh or zsh. sh is virtually > guaranteed, bash is not. Your saying there are computers out there without bash? It sounds hard to believe. Bash is such a popular shell. Even Cygwin comes with bash. If bash is such a problem, then I guess I could use awk or something else to do the work I need. I'm not honestly concerned with the theoretical. Is there a unix-like system out there that doesn't come with bash that OpenBIOS is expected to support?

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Re: [OpenBIOS] help with debugging
by Programmingkid 16 Apr '15

16 Apr '15

On Apr 14, 2015, at 11:25 AM, Cormac O'Brien wrote: >> Nothing is printed. > > Are you launching QEMU with -nographic and -serial stdio? I don't like the -nographic option because it makes quitting QEMU really difficult. The -serial stdio option appears to not be able to work with the -nographic option. The options did not yield any debug output. Maybe there is something wrong with printk.

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