OpenBIOS

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April 2019

2 discussions

building openbios sparc64 for qemu
by berrie.schuurhuis＠gmail.com Dec. 3, 2019

Dec. 3, 2019

As a newbee in this space I got qemu-system-sparc[64] running on a linux machine. Trying to find out how qemu and openbios work together I'm currently looking into building openbios-sparc64. This goes with mixed success as https://www.openfirmware.info/OpenBIOS has nice description on how to build openbios, but there's a missing link as to how to harvest the openbios-sparc64 from this. My build of openbios is done on an Ultra60(Sparc) machine that runs: Linux ultra60 4.19.0-2-sparc64 #1 Debian 4.19.16-1 (2019-01-17) sparc64 GNU/Linux with gcc --version gcc (Debian 8.3.0-2) 8.3.0 It seems like the file openbios/obj-sparc64/openbios-builtin.elf may be the candidate to become openbios-sparc64?? When giving this a try, and moving openbios-builtin.elf to my x86 qemu machine, it crashes spectacularly with: qemu: fatal: Trap 0x0064 while trap level (5) >= MAXTL (5), Error state pc: 0000000000004c80 npc: 0000000000004c84 %g0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %g4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %o0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %o4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %l0-3: 00000000fff001e0 000001ff00000000 000001fff0080000 0000000000000000 %l4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %i0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %i4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f00: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f32: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f40: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f48: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 %f56: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 pstate: 00000414 ccr: 44 (icc: -Z-- xcc: -Z--) asi: 00 tl: 5 pil: 0 gl: 2 tbr: 0000000000000000 hpstate: 0000000000000000 htba: 0000000000000000 cansave: 6 canrestore: 0 otherwin: 0 wstate: 0 cleanwin: 6 cwp: 7 fsr: 0000000000000000 y: 0000000000000000 fprs: 0000000000000000 On x86: Booting qemu with the provided openbios-sparc64 rom works flawless. On the Ultra60: Running ./openbios-unix openbios-sparc64.dict seems to behave as expected: Output device screen not found. Input device keyboard not found. Output device screen not found. Type 'help' for detailed information [unix] Booting default not supported. Trying disk... No valid state has been set by load or init-program 0 > help To get openbios build, I had to make a small change in Makefile.target: #CFLAGS+= -Werror CFLAGS+= -Wno-error To "fix": Building OpenBIOS for sparc64 Building... /usr/bin/xsltproc error: CC target/arch/unix/unix.o CC target/arch/unix/boot.o /sources/openbios/arch/unix/boot.c:101:6: error: redundant redeclaration of 'forth_fw_cfg_read_file' [-Werror=redundant-decls] void forth_fw_cfg_read_file(void); ^~~~~~~~~~~~~~~~~~~~~~ In file included from ./target/include/asm/io.h:8, from /sources/openbios/include/kernel/kernel.h:22, from /sources/openbios/include/libopenbios/bindings.h:21, from /sources/openbios/arch/unix/boot.c:6: /sources/openbios/include/arch/common/fw_cfg.h:104:6: note: previous declaration of 'forth_fw_cfg_read_file' was here void forth_fw_cfg_read_file(void); ^~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors Any pointers or suggestions to continue this journey are appreciated.

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Re: [OpenBIOS] Back at it again( PCI Passthrough )
by Jd Lyons July 13, 2019

July 13, 2019

Ok, I made those changes to openbios, here is the output. > On May 8, 2018, at 6:50 AM, Joe van Tunen <joevt(a)shaw.ca> wrote: > > : (debug-feval) ( fcode# -- fcode# ) > \ Address > fcode-stream 1 - . here u. ." : " > > \ Indicate if word is compiled > state @ 0<> if > ." (compile) " > then > dup fcode>xt cell - lfa2name type > dup ." [ 0x" . ." ]" cr > ;

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