OpenBIOS October 2019

openbios@openbios.org

3 participants
5 discussions

by berrie.schuurhuis＠gmail.com

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.

8 months, 1 week

[PATCH 0/2] ide: remove global channels list

by Mark Cave-Ayland

Here are another couple of patches which convert the IDE channel and drive pointers into instance variables, allowing the global IDE channels list to be removed. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland(a)ilande.co.uk> Mark Cave-Ayland (2): ide: use instance values to hold C drive and channel structures ide: locate drives by iterating over the device tree during ob_ide_quiesce() drivers/ide.c | 71 +++++++++++++++++---------------------------------- drivers/ide.h | 1 - 2 files changed, 23 insertions(+), 49 deletions(-) -- 2.20.1

9 months, 2 weeks

[PATCH] escc: explicitly mark variable containing incoming keyboard character as volatile

by Mark Cave-Ayland

Otherwise the compiler may not understand that a read from the assigned buffer is comming from memory-mapped IO space and fail to update accordingly. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland(a)ilande.co.uk> --- drivers/escc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/escc.c b/drivers/escc.c index 392625e..d9e1990 100644 --- a/drivers/escc.c +++ b/drivers/escc.c @@ -284,7 +284,7 @@ keyboard_dataready(void) unsigned char keyboard_readdata(void) { - unsigned char ch; + volatile unsigned char ch; while (!keyboard_dataready()) { } -- 2.20.1

9 months, 2 weeks

[PATCH] Implement missing words for the ATI FCode ROM to test ati-vga emulation

by BALATON Zoltan

Signed-off-by: BALATON Zoltan <balaton(a)eik.bme.hu> --- drivers/pci.c | 51 +++++++++++++++++++++++++++++++++++++-------------- drivers/pci.fs | 41 +++++++++++++++++++++++++++++++++++++++++ drivers/vga.fs | 4 ++-- forth/device/other.fs | 6 ++++++ 4 files changed, 86 insertions(+), 16 deletions(-) This is on top of Mark's previous patches from the openbios mailing list applied to openbios master: 9a32ed9 Implement missing words for the ATI FCode ROM to test ati-vga emulation b90ac41 virtio: use instance value to initialise C instance parameter ac467a3 lsi: use instance value to hold sd_private_t pointer 177684a pc_kbd: use instance value to initialise C instance parameter d5fdb98 pc_serial: remove separate init word 7c20840 pci: call set-args before configuring PCI device nodes f37460e pci: remove explicit setting of my-self from PCI devices b548924 pci: remove explicit find-device from PCI devices b1ca78f x86: set active package and current instance to root device node before probe 6222a47 SPARC64: set active package and current instance to root device node before probe 5cd41e5 ppc: set active package and current instance to root device node before probe e68504f ppc: move New World uninorth and nvram device node creation to the root device 86aa740 nvram: ensure that NVRAM configuration is separate from NVRAM node creation e959bfd libopenbios: remove REGISTER_NAMED_NODE and REGISTER_NAMED_NODE_PHANDLE macros abc4553 pci: remove ob_pci_initialize() and ob_pci_empty_node 0a63c74 pci: convert to use BIND_NODE_METHODS() macro 57ff6ea virtio: convert to use BIND_NODE_METHODS() macro ea3a8eb lsi: convert to use BIND_NODE_METHODS() macro 32ff529 lsi: don't change active package when setting device alias f63f5ee nvram: convert to use BIND_NODE_METHODS() macro 03c53be usbhid: convert to use BIND_NODE_METHODS() macro 365b2c1 pmu: convert to use BIND_NODE_METHODS() macro 60125f5 macio: convert to use BIND_NODE_METHODS() macro 7d23b31 cuda: convert to use BIND_NODE_METHODS() macro 305d629 escc: convert to use BIND_NODE_METHODS() macro 4a0aea1 adb: convert to use BIND_NODE_METHODS() macro 0081f71 ide: convert to use BIND_NODE_METHODS() macro 79a241c floppy: convert to use BIND_NODE_METHODS() macro 01ea2e4 pc_serial: convert to use BIND_NODE_METHODS() macro 9eb09a9 pc_kbd: convert to use BIND_NODE_METHODS() macro 8945ab4 libopenbios: introduce BIND_NODE_METHODS() macro e9491ea admin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses propertyadmin/devices.fs: Format assigned-addresses property c79e0ec (origin/master, origin/HEAD) SPARC64: use serial console when QEMU is launched with -vga none admin/devices.fs: Format assigned-addresses property is https://mail.coreboot.org/hyperkitty/list/openbios@openbios.org/thread/WHL7… and additionally to the above I also have another patch from Mark that I can't find now in the list archives even though I remember I've replyed to it and had a discussion about having 3 or 2 cases if-else statement. diff --git a/drivers/pci.c b/drivers/pci.c index 4bc02c9..eb5f7d3 100644 --- a/drivers/pci.c +++ b/drivers/pci.c @@ -408,20 +408,32 @@ static void ob_pci_unmap(ucell virt, ucell size) { static void ob_pci_bus_map_in(int *idx) { - uint32_t ba; - ucell size; - ucell virt; - - PCI_DPRINTF("ob_pci_bar_map_in idx=%p\n", idx); + fword("pci-map-in"); +} - size = POP(); - POP(); - POP(); - ba = POP(); +static void +ob_pci_bus_map_out(int *idx) +{ + /* Should call pci-map-out but nothing to do in it yet */ + fword("2drop"); +} - virt = ob_pci_map(ba, size); +static void +ob_pci_config_read8(int *idx) +{ + cell hi = POP(); + pci_addr addr = PCI_ADDR(PCI_BUS(hi), PCI_DEV(hi), PCI_FN(hi)); + uint8_t val = pci_config_read8(addr, hi & 0xff); + PUSH(val); +} - PUSH(virt); +static void +ob_pci_config_write8(int *idx) +{ + cell hi = POP(); + pci_addr addr = PCI_ADDR(PCI_BUS(hi), PCI_DEV(hi), PCI_FN(hi)); + cell val = POP(); + pci_config_write8(addr, hi & 0xff, val & 0xff); } static void @@ -459,7 +471,10 @@ NODE_METHODS(ob_pci_bus_node) = { { "close", ob_pci_close }, { "decode-unit", ob_pci_decode_unit }, { "encode-unit", ob_pci_encode_unit }, - { "pci-map-in", ob_pci_bus_map_in }, + { "map-in", ob_pci_bus_map_in }, + { "map-out", ob_pci_bus_map_out }, + { "config-b@", ob_pci_config_read8 }, + { "config-b!", ob_pci_config_write8 }, { "dma-alloc", ob_pci_dma_alloc }, { "dma-free", ob_pci_dma_free }, { "dma-map-in", ob_pci_dma_map_in }, @@ -473,7 +488,14 @@ static void ob_pci_bridge_map_in(int *idx) { /* As per the IEEE-1275 PCI specification, chain up to the parent */ - call_parent_method("pci-map-in"); + call_parent_method("map-in"); +} + +static void +ob_pci_bridge_map_out(int *idx) +{ + /* As per the IEEE-1275 PCI specification, chain up to the parent */ + call_parent_method("map-out"); } NODE_METHODS(ob_pci_bridge_node) = { @@ -481,7 +503,8 @@ NODE_METHODS(ob_pci_bridge_node) = { { "close", ob_pci_close }, { "decode-unit", ob_pci_decode_unit }, { "encode-unit", ob_pci_encode_unit }, - { "pci-map-in", ob_pci_bridge_map_in }, + { "map-in", ob_pci_bridge_map_in }, + { "map-out", ob_pci_bridge_map_out }, { "dma-alloc", ob_pci_dma_alloc }, { "dma-free", ob_pci_dma_free }, { "dma-map-in", ob_pci_dma_map_in }, diff --git a/drivers/pci.fs b/drivers/pci.fs index a7b56e1..327c9c9 100644 --- a/drivers/pci.fs +++ b/drivers/pci.fs @@ -37,4 +37,45 @@ then ; +: pci-map-in ( addr.lo addr.mid addr.hi size -- virt ) + \ Ignore everything but addr.hi and find assigned addr for BAR + drop nip nip + \ Save my-self and set it to same as active package because otherwise + \ decode-phys below seems to be confused. Maybe this should not be needed + my-self swap active-package ihandle>phandle to my-self + " assigned-addresses" active-package get-package-property 0= if + begin + decode-phys ( bar prop prop-len phys.lo phys.mid phys.hi ) + dup 0fffffff and 6 pick 0fffffff and = if + 2drop -rot + decode-int drop decode-int drop 2drop + ( bar addr.lo ) + \ Now translate addr.lo, This may be wrong + \ maybe we should look at parent's ranges instead? + over 18 rshift 3 and 1 = if + " reg" active-package parent get-package-property 0= if + ( bar addr.lo prop prop-len reg.addr reg.size ) + decode-int -rot decode-int 3drop + + + then + then + nip swap to my-self + exit + else + 3drop \ no match, try next + then + \ Drop the size as we don't need it + decode-int drop decode-int drop + dup 0= + until + 3drop + to my-self + -1 \ not found + else + drop + to my-self + -1 \ could not find assigned-addresses + then + ; + [THEN] diff --git a/drivers/vga.fs b/drivers/vga.fs index 53dcff0..f3ffda7 100644 --- a/drivers/vga.fs +++ b/drivers/vga.fs @@ -146,14 +146,14 @@ defer vbe-iow! : map-fb ( -- ) cfg-bar0 pci-bar>pci-addr if \ ( pci-addr.lo pci-addr.mid pci-addr.hi size ) - " pci-map-in" $call-parent + " map-in" $call-parent to fb-addr then ; : map-mmio ( -- ) cfg-bar2 pci-bar>pci-addr if \ ( pci-addr.lo pci-addr.mid pci-addr.hi size ) - " pci-map-in" $call-parent + " map-in" $call-parent to mmio-addr then ; diff --git a/forth/device/other.fs b/forth/device/other.fs index 1bed9b8..0ff34b6 100644 --- a/forth/device/other.fs +++ b/forth/device/other.fs @@ -58,21 +58,27 @@ defer (poke) \ 5.3.7.2 Device-register access : rb@ ( addr -- byte ) + ioc@ ; : rw@ ( waddr -- w ) + iow@ ; : rl@ ( qaddr -- quad ) + iol@ ; : rb! ( byte addr -- ) + ioc! ; : rw! ( w waddr -- ) + iow! ; : rl! ( quad qaddr -- ) + iol! ; : rx@ ( oaddr - o ) -- 2.13.7

9 months, 3 weeks

[PATCH] admin/devices.fs: Format assigned-addresses property

by BALATON Zoltan

To help reading property listing also format assigned-addresses property the same way as reg was already formatted. Signed-off-by: BALATON Zoltan <balaton(a)eik.bme.hu> --- Actually wanted to improve printing of ranges but I could not do that this one is simpler though. forth/admin/devices.fs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/forth/admin/devices.fs b/forth/admin/devices.fs index 6f9e8ef..38f6ad6 100644 --- a/forth/admin/devices.fs +++ b/forth/admin/devices.fs @@ -417,7 +417,7 @@ \ This function hardwires data formats to particular node properties : (.property-by-name) ( name-str name-len data len -- ) - 2over " reg" strcmp 0= if + 2over 2dup " reg" strcmp 0= -rot " assigned-addresses" strcmp 0= or if my-#acells my-#scells 2swap .p-reg 2drop exit then -- 2.13.7

9 months, 3 weeks