December 2009 - OpenBIOS - mail.coreboot.org

starting
by G 3 Oct. 18, 2010

Oct. 18, 2010

I have begun doing work with OpenBIOS. I was wondering if it is possible to compile OpenBIOS for PowerPC on Mac OS X? If not, what Linux distro should I use? Any advice would really help.

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QEMU OpenBIOS booting?
by Steven Noonan May 24, 2010

May 24, 2010

Hi folks, I've been trying to use OpenBIOS with QEMU, and I've had trouble getting it to boot any PowerPC-based OS discs (Linux, Mac OS X, etc). OpenBIOS just doesn't seem to find anything bootable. If I try booting QEMU with -nographic, I get this output (I get the same with a self-built openbios-qemu.elf from the OpenBIOS SVN as well): ---- snip ---- >> ============================================================= >> OpenBIOS 1.0 [Apr 12 2009 00:55] >> Configuration device id QEMU version 1 machine id 1 >> CPUs: 1 >> Memory: 128M >> UUID: 00000000-0000-0000-0000-000000000000 >> CPU type PowerPC,970FX Welcome to OpenBIOS v1.0 built on Apr 12 2009 00:55 >> ELF - yaboot_startup: Entering boot, no path >> ELF - try_bootinfo: Trying hd:0,ppc\bootinfo.txt >> ELF - try_bootinfo: Can't open hd:0,ppc\bootinfo.txt >> ELF - try_path: Trying hd:2,\ofclient >> ELF - try_path: Can't open hd:2,\ofclient >> ELF - try_path: Trying hd:2,\yaboot conf=hd:2,\yaboot.conf >> ELF - try_path: Can't open hd:2,\yaboot >> *** Boot failure! No secondary bootloader specified *** ---- snip ---- Laurent Vivier suggested in this conversation in February (http://lists.openbios.org/pipermail/openbios/2009-February/003476.html) that there could be a bug in partition map decoding. Has such a bug been confirmed? I was trying to find the bug myself (I am an experienced C/C++ programmer), but the bug seems to be subtle, and my lack of familiarity with the code base doesn't help much. I've been trying to figure this out for 7 hours straight now... Any advice or other help would be much appreciated! - Steven

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Re: [OpenBIOS] r648 - in trunk/openbios-devel: arch/sparc64 drivers
by Igor Kovalenko Dec. 30, 2009

Dec. 30, 2009

On Mon, Dec 28, 2009 at 1:15 PM, <svn(a)openbios.org> wrote: > Author: blueswirl > Date: 2009-12-28 11:15:33 +0100 (Mon, 28 Dec 2009) > New Revision: 648 > > Modified: > trunk/openbios-devel/arch/sparc64/entry.S > trunk/openbios-devel/drivers/pci.c > trunk/openbios-devel/drivers/vga_vbe.c > Log: > Map VGA buffer only during PCI probe > > Also pass physical addresses instead of bus addresses to VGA init. > > Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> > > Modified: trunk/openbios-devel/drivers/vga_vbe.c > =================================================================== > --- trunk/openbios-devel/drivers/vga_vbe.c 2009-12-21 09:57:53 UTC (rev 647) > +++ trunk/openbios-devel/drivers/vga_vbe.c 2009-12-28 10:15:33 UTC (rev 648) > @@ -25,6 +25,7 @@ > #include "asm/io.h" > #include "libc/vsprintf.h" > #include "video_subr.h" > +#include "ofmem.h" > > /* VGA init. We use the Bochs VESA VBE extensions */ > #define VBE_DISPI_INDEX_ID 0x0 > @@ -142,7 +143,10 @@ > depth = d; > linebytes = (width * ((depth + 7) / 8)); > } > +#ifdef CONFIG_SPARC64 > + ofmem_map_page_range(fb, fb, fb_size, 0x36); > #endif > +#endif > > vga_vbe_set_mode(width, height, depth); You pass flags so mapping is unlocked, this can cause problems with translations being evicted from tlb table. Do you see any issues? Linux kernel has it's own idea of address translations, and we still do not switch trap handlers so probably framebuffer should be mapped locked into tlb table (mode=0x76) -- Kind regards, Igor V. Kovalenko

2 6

[PATCH 0/5] v1 alternative implementation of sparc64 boot memory mapping
by Igor V. Kovalenko Dec. 30, 2009

Dec. 30, 2009

The following series implements alternative approach to solve issue where qemu provides i/o and pci memory spaces within physical RAM address space, which makes low memory addresses unusable. Instead of changing qemu to move i/o and pci spaces out of RAM space we can remap 64M of i/o and pci spaces to above 32bit accessible by client program. Then we map physical RAM at 64M offset to start of virtual memory. A few extra changes are required. At very least we need to find where framebuffer virtual address is placed by startup code, helper change is provided. NOTE: this approach may hide up to 128M from client allocations, therefore default qemu memory size is not sufficient. Please use at least '-m 256' on qemu command line to test with these changes. In my test these series are as efficient as qemu change to remap i/o and pci spaces in allowing milax032sparc.iso to not step over cmd646 registers. Currently milax loader gets a bit further and fails with Can't open /ramdisk-root byte-load: exception caught! v0 -> v1: split ofmem_find_virtual changes into separate patches --- Igor V. Kovalenko (5): sparc64: remap first 64M physical address space sparc64: claim memory mapped by startup code ofmem: helper to find first virtual address map entry ofmem: use helper to access command line parameters from qemu ofmem: use helper to find framebuffer virtual address on sparc64 arch/sparc64/entry.S | 68 +++++++++++++++++++----------------------- arch/sparc64/ofmem_sparc64.c | 2 + arch/sparc64/openbios.c | 19 ++++++++---- include/ofmem.h | 1 + modules/ofmem_common.c | 25 +++++++++++++++ modules/video.c | 9 +++++- 6 files changed, 80 insertions(+), 44 deletions(-) -- Kind regards, Igor V. Kovalenko

5 17

r654 - in trunk/openbios-devel: arch/sparc64 drivers
by svn＠openbios.org Dec. 30, 2009

Dec. 30, 2009

Author: blueswirl Date: 2009-12-30 11:54:52 +0100 (Wed, 30 Dec 2009) New Revision: 654 Modified: trunk/openbios-devel/arch/sparc64/openbios.c trunk/openbios-devel/drivers/pc_serial.c Log: Sparc64: fix Linux error about inconsistent console also for serial console Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> Modified: trunk/openbios-devel/arch/sparc64/openbios.c =================================================================== --- trunk/openbios-devel/arch/sparc64/openbios.c 2009-12-30 09:49:40 UTC (rev 653) +++ trunk/openbios-devel/arch/sparc64/openbios.c 2009-12-30 10:54:52 UTC (rev 654) @@ -386,7 +386,7 @@ fword("property"); if (fw_cfg_read_i16(FW_CFG_NOGRAPHIC)) { - stdin_path = stdout_path = "/pci/pci/pci/ebus/su"; + stdin_path = stdout_path = "ttya"; } else { stdin_path = "/pci/pci/pci/ebus/kb_ps2"; stdout_path = "/pci/pci/pci/QEMU,VGA"; Modified: trunk/openbios-devel/drivers/pc_serial.c =================================================================== --- trunk/openbios-devel/drivers/pc_serial.c 2009-12-30 09:49:40 UTC (rev 653) +++ trunk/openbios-devel/drivers/pc_serial.c 2009-12-30 10:54:52 UTC (rev 654) @@ -171,6 +171,7 @@ ob_pc_serial_init(const char *path, const char *dev_name, uint64_t base, uint64_t offset, int intr) { + phandle_t aliases; char nodebuff[128]; snprintf(nodebuff, sizeof(nodebuff), "%s/%s", path, dev_name); @@ -192,4 +193,7 @@ fword("encode+"); push_str("reg"); fword("property"); + + aliases = find_dev("/aliases"); + set_property(aliases, "ttya", nodebuff, strlen(nodebuff) + 1); }

1 0

r653 - trunk/openbios-devel/drivers
by svn＠openbios.org Dec. 30, 2009

Dec. 30, 2009

Author: blueswirl Date: 2009-12-30 10:49:40 +0100 (Wed, 30 Dec 2009) New Revision: 653 Modified: trunk/openbios-devel/drivers/pc_kbd.c Log: Sparc64: fix Linux error about inconsistent console Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> Modified: trunk/openbios-devel/drivers/pc_kbd.c =================================================================== --- trunk/openbios-devel/drivers/pc_kbd.c 2009-12-30 09:49:38 UTC (rev 652) +++ trunk/openbios-devel/drivers/pc_kbd.c 2009-12-30 09:49:40 UTC (rev 653) @@ -204,6 +204,11 @@ push_str("keyboard"); fword("device-type"); + PUSH(-1); + fword("encode-int"); + push_str("keyboard"); + fword("property"); + chosen = find_dev("/chosen"); push_str(nodebuff); fword("open-dev");

1 0

r652 - trunk/openbios-devel/drivers
by svn＠openbios.org Dec. 30, 2009

Dec. 30, 2009

Author: blueswirl Date: 2009-12-30 10:49:38 +0100 (Wed, 30 Dec 2009) New Revision: 652 Modified: trunk/openbios-devel/drivers/vga_vbe.c Log: Map VGA buffer at client accessible location (Igor Kovalenko) Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> Modified: trunk/openbios-devel/drivers/vga_vbe.c =================================================================== --- trunk/openbios-devel/drivers/vga_vbe.c 2009-12-29 17:36:05 UTC (rev 651) +++ trunk/openbios-devel/drivers/vga_vbe.c 2009-12-30 09:49:38 UTC (rev 652) @@ -144,7 +144,11 @@ linebytes = (width * ((depth + 7) / 8)); } #ifdef CONFIG_SPARC64 - ofmem_map_page_range(fb, fb, fb_size, 0x36); +#define VGA_VADDR 0xfe000000 + ofmem_claim_phys(fb, fb_size, 0); + ofmem_claim_virt(VGA_VADDR, fb_size, 0); + ofmem_map(fb, VGA_VADDR, fb_size, 0x76); + fb = VGA_VADDR; #endif #endif

1 0

r651 - trunk/openbios-devel/arch/sparc64
by svn＠openbios.org Dec. 29, 2009

Dec. 29, 2009

Author: blueswirl Date: 2009-12-29 18:36:05 +0100 (Tue, 29 Dec 2009) New Revision: 651 Modified: trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c Log: sparc64: claim memory mapped by startup code - claim both physical and virtual address ranges while walking boot memory mappings Signed-off-by: Igor V. Kovalenko <igor.v.kovalenko(a)gmail.com> Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> Modified: trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c =================================================================== --- trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c 2009-12-29 17:36:03 UTC (rev 650) +++ trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c 2009-12-29 17:36:05 UTC (rev 651) @@ -83,6 +83,8 @@ static int remap_page_range( ucell phys, ucell virt, ucell size, ucell mode ) { + ofmem_claim_phys(phys, size, 0); + ofmem_claim_virt(virt, size, 0); ofmem_map_page_range(phys, virt, size, mode); if (!(mode & SPITFIRE_TTE_LOCKED)) { OFMEM_TRACE("remap_page_range clearing translation " FMT_ucellx

1 0

r650 - trunk/openbios-devel/arch/sparc64
by svn＠openbios.org Dec. 29, 2009

Dec. 29, 2009

Author: blueswirl Date: 2009-12-29 18:36:03 +0100 (Tue, 29 Dec 2009) New Revision: 650 Modified: trunk/openbios-devel/arch/sparc64/entry.S trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c Log: Postpone mapping of the memory Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> Modified: trunk/openbios-devel/arch/sparc64/entry.S =================================================================== --- trunk/openbios-devel/arch/sparc64/entry.S 2009-12-28 10:24:32 UTC (rev 649) +++ trunk/openbios-devel/arch/sparc64/entry.S 2009-12-29 17:36:03 UTC (rev 650) @@ -180,26 +180,6 @@ bne 1b add %l2, %g5, %l2 -#if 1 - ! setup 0-16M - mov %g0, %g4 - mov 4, %g6 - set 48, %g7 - set 0x400000, %g5 -1: stxa %g4, [%g7] ASI_DMMU ! vaddr = 0, ctx=0 - set 0xe0000000, %g3 - sllx %g3, 32, %g3 - or %g3, 0x36, %g3 - or %g4, %g3, %g3 - ! valid, 4M, cacheable(I/E/C), priv, writable - ! paddr = 0 - stxa %g3, [%g0] ASI_DTLB_DATA_IN - add %g4, %g5, %g4 - deccc %g6 - bne 1b - nop -#endif - membar #Sync setx _start, %g7, %g4 @@ -224,25 +204,6 @@ bne 1b add %l2, %g5, %l2 -#if 1 - ! setup 0-16M - mov %g0, %g4 - mov 4, %g6 - set 0x400000, %g5 -1: stxa %g4, [%g7] ASI_IMMU ! vaddr = 0, ctx=0 - set 0xe0000000, %g3 - sllx %g3, 32, %g3 - or %g3, 0x34, %g3 - or %g4, %g3, %g3 - ! valid, 4M, cacheable(I/E/C), priv - ! paddr = 0 - stxa %g3, [%g0] ASI_ITLB_DATA_IN - add %g4, %g5, %g4 - deccc %g6 - bne 1b - nop -#endif - flush %g4 mov %g1, %g3 Modified: trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c =================================================================== --- trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c 2009-12-28 10:24:32 UTC (rev 649) +++ trunk/openbios-devel/arch/sparc64/ofmem_sparc64.c 2009-12-29 17:36:03 UTC (rev 650) @@ -100,5 +100,8 @@ /* inherit translations set up by entry.S */ ofmem_walk_boot_map(remap_page_range); + + /* Map the memory */ + ofmem_map_page_range(0, 0, qemu_mem_size, 0x36); }

1 0

r649 - trunk/openbios-devel/config/scripts
by svn＠openbios.org Dec. 28, 2009

Dec. 28, 2009

Author: blueswirl Date: 2009-12-28 11:24:32 +0100 (Mon, 28 Dec 2009) New Revision: 649 Modified: trunk/openbios-devel/config/scripts/switch-arch Log: Fix a typo Signed-off-by: Blue Swirl <blauwirbel(a)gmail.com> Modified: trunk/openbios-devel/config/scripts/switch-arch =================================================================== --- trunk/openbios-devel/config/scripts/switch-arch 2009-12-28 10:15:33 UTC (rev 648) +++ trunk/openbios-devel/config/scripts/switch-arch 2009-12-28 10:24:32 UTC (rev 649) @@ -96,7 +96,7 @@ if [ "$ARCH" = "$HOSTARCH" ]; then return fi - echo "ERROR: no ${1} cross-compiler found !" 1>&2 + echo "ERROR: no ${1} cross-compiler found !" 1>&2 exit 1 }

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