SeaBIOS July 2016

seabios@seabios.org

12 participants
17 discussions

GeodeVGA is not initialized during SeaBIOS execution
by Andrey Korolyov 10 Jul '16

10 Jul '16

Hi, as per Kevin`s suggestion, I am posting initialization log (mixed one) from initialization of the GeodeLX board. As it could be clearly seen from the log, VGA option ROM was never called and executed during the initialization sequence, therefore issue with a lack of video output during SeaBIOS stage on this board looks somehow logical. [1] suggests that the problem existed long before, as most users of these boards are Alix owners who do not care about existence of the video output :) [1].… [View More]

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[PATCH 1/3] vgabios: Remove special case of dh==0xff in handle_1013()
by Kevin O'Connor 07 Jul '16

07 Jul '16

The original "lgpl vgabios" had a special case for dh==0xff in its int1013 (write string) code. There does not appear to be any VGABIOS documentation supporting this as an externally available feature. It appears this was for its own internal use when writing its strings to the screen. SeaVGABIOS doesn't use this hack; this patch removes it from the code. Signed-off-by: Kevin O'Connor <kevin(a)koconnor.net> --- vgasrc/vgabios.c | 8 +------- 1 file changed, 1 insertion(+), 7 … [View More]

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[PATCH v3] fw/msr_feature_control: add support to set MSR_IA32_FEATURE_CONTROL
by Haozhong Zhang 07 Jul '16

07 Jul '16

OS usually expects BIOS to set certain bits in MSR_IA32_FEATURE_CONTROL for some features (e.g. VMX and LMCE). QEMU provides a fw_cfg file "etc/msr_feature_control" to advise bits that should be set in MSR_IA32_FEATURE_CONTROL. If this file exists, SeaBIOS will set the advised bits in that MSR. Signed-off-by: Haozhong Zhang <haozhong.zhang(a)intel.com> Reviewed-by: Paolo Bonzini <pbonzini(a)redhat.com> --- Changes in v3: * Move msr_feature_control_setup() to paravirt.c. Changes … [View More]in v2: * Call msr_feature_control_setup() before smp_setup(). * Use wrmsr_smp() instead of wrmsr() on BSP. * Rename smp_mtrr and smp_mtrr_count to smp_msr and smp_msr_count as they are not only used for MTRR now. --- src/fw/paravirt.c | 12 +++++++++++- src/fw/smp.c | 20 ++++++++++---------- 2 files changed, 21 insertions(+), 11 deletions(-) diff --git a/src/fw/paravirt.c b/src/fw/paravirt.c index 8ed4380..73a08f0 100644 --- a/src/fw/paravirt.c +++ b/src/fw/paravirt.c @@ -131,6 +131,15 @@ qemu_preinit(void) dprintf(1, "RamSize: 0x%08x [cmos]\n", RamSize); } +#define MSR_IA32_FEATURE_CONTROL 0x0000003a + +static void msr_feature_control_setup(void) +{ + u64 feature_control_bits = romfile_loadint("etc/msr_feature_control", 0); + if (feature_control_bits) + wrmsr_smp(MSR_IA32_FEATURE_CONTROL, feature_control_bits); +} + void qemu_platform_setup(void) { @@ -149,8 +158,9 @@ qemu_platform_setup(void) smm_device_setup(); smm_setup(); - // Initialize mtrr and smp + // Initialize mtrr, msr_feature_control and smp mtrr_setup(); + msr_feature_control_setup(); smp_setup(); // Create bios tables diff --git a/src/fw/smp.c b/src/fw/smp.c index 579acdb..6e706e4 100644 --- a/src/fw/smp.c +++ b/src/fw/smp.c @@ -10,7 +10,7 @@ #include "output.h" // dprintf #include "romfile.h" // romfile_loadint #include "stacks.h" // yield -#include "util.h" // smp_setup +#include "util.h" // smp_setup, msr_feature_control_setup #include "x86.h" // wrmsr #define APIC_ICR_LOW ((u8*)BUILD_APIC_ADDR + 0x300) @@ -20,20 +20,20 @@ #define APIC_ENABLED 0x0100 -static struct { u32 index; u64 val; } smp_mtrr[32]; -static u32 smp_mtrr_count; +static struct { u32 index; u64 val; } smp_msr[32]; +static u32 smp_msr_count; void wrmsr_smp(u32 index, u64 val) { wrmsr(index, val); - if (smp_mtrr_count >= ARRAY_SIZE(smp_mtrr)) { + if (smp_msr_count >= ARRAY_SIZE(smp_msr)) { warn_noalloc(); return; } - smp_mtrr[smp_mtrr_count].index = index; - smp_mtrr[smp_mtrr_count].val = val; - smp_mtrr_count++; + smp_msr[smp_msr_count].index = index; + smp_msr[smp_msr_count].val = val; + smp_msr_count++; } u32 MaxCountCPUs; @@ -58,10 +58,10 @@ handle_smp(void) u8 apic_id = ebx>>24; dprintf(DEBUG_HDL_smp, "handle_smp: apic_id=%d\n", apic_id); - // MTRR setup + // MTRR and MSR_IA32_FEATURE_CONTROL setup int i; - for (i=0; i<smp_mtrr_count; i++) - wrmsr(smp_mtrr[i].index, smp_mtrr[i].val); + for (i=0; i<smp_msr_count; i++) + wrmsr(smp_msr[i].index, smp_msr[i].val); // Set bit on FoundAPICIDs FoundAPICIDs[apic_id/32] |= (1 << (apic_id % 32)); -- 2.9.0 [View Less]

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Re: [SeaBIOS] Issues building SeaBIOS with gcc > 4.8
by Roger Pau Monné 06 Jul '16

06 Jul '16

On Tue, Jul 05, 2016 at 11:23:36PM +0200, Idwer Vollering wrote: > 2016-07-05 15:49 GMT+02:00 Roger Pau Monné <roger.pau(a)citrix.com>: > > Hello, > > > > I'm seeing the following issue when building SeaBIOS with gcc > 4.8: > > > > (..) > > > > > This works fine when using gcc 4.8, but fails in the same way with gcc 5.4. > > The assembler version used is: > > > > GNU assembler version 2.25.1 (x86_64-portbld-freebsd11.0)… [View More]

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Issues building SeaBIOS with gcc > 4.8
by Roger Pau Monné 06 Jul '16

06 Jul '16

Hello, I'm seeing the following issue when building SeaBIOS with gcc > 4.8: Compiling whole program out/ccode32flat.o Compiling whole program out/code32seg.o Compiling whole program out/ccode16.o /tmp//ccecsJuF.s: Assembler messages: /tmp//ccecsJuF.s:539: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:545: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:966: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:1484: Error: register save … [View More]offset not a multiple of 8 /tmp//ccecsJuF.s:1813: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:1922: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:2626: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:2632: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:2793: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:3050: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:3056: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:3387: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:3649: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:3829: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:4111: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:4620: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:4626: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:5538: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:5544: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:6140: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:6146: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7186: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7192: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7376: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7382: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7732: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7799: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:7805: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:8001: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:8007: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:8932: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:10170: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:10176: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:10919: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:10925: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:11315: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:11321: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:11824: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:11830: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:12337: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:12343: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:12523: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:12647: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:12653: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:13019: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:13535: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:13671: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:13677: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:14363: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:14369: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:14862: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:14962: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:14968: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:15297: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:15303: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:15854: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:15860: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:16243: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:16249: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:16445: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:16451: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:16814: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:16820: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:17392: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:17503: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:17613: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:17706: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:17712: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:18306: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:18312: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:18450: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:18456: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:18802: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:18808: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:19122: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:19128: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:19372: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:19378: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:19692: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:19698: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:20491: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:20497: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:20603: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:20609: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:21003: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:21009: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:21658: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:21958: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:22162: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:22633: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:22848: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:22854: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:24399: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:24405: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:25008: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:25014: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:25412: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:26448: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:26454: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:27363: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:27597: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:27686: Error: register save offset not a multiple of 8 /tmp//ccecsJuF.s:27692: Error: register save offset not a multiple of 8 Makefile:154: recipe for target 'out/ccode16.o' failed gmake: *** [out/ccode16.o] Error 1 This works fine when using gcc 4.8, but fails in the same way with gcc 5.4. The assembler version used is: GNU assembler version 2.25.1 (x86_64-portbld-freebsd11.0) using BFD version (GNU Binutils) 2.25.1 What causes this issue seems to be the usage of the "-m16" gcc flag, which was introduced in gcc 4.9 AFAICT. The following workaround solves the issue, but I would like to know if anyone else has seen this with newer gcc versions, or if the gcc version from FreeBSD ports is broken. Thanks, Roger. --- diff --git a/Makefile b/Makefile index 4930b3a..19a1e7d 100644 --- a/Makefile +++ b/Makefile @@ -73,8 +73,7 @@ CFLAGSSEG := $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \ $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \ $(call cc-option,$(CC),-fno-tree-switch-conversion,) CFLAGS32SEG := $(CFLAGSSEG) -DMODE16=0 -CFLAGS16 := $(CFLAGSSEG) -DMODE16=1 \ - $(call cc-option,$(CC),-m16,-Wa$(COMMA)src/code16gcc.s) \ +CFLAGS16 := $(CFLAGSSEG) -DMODE16=1 -Wa$(COMMA)src/code16gcc.s \ $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline) # Run with "make V=1" to see the actual compile commands [View Less]

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[PATCH v2 0/3] seabios: add serial console support
by Gerd Hoffmann 05 Jul '16

05 Jul '16

Hi, Next round of patches. Changes: * Moved it all to a new sercon.c file. * Code maps cp437 to utf8 now, giving a much nicer display. Compare "Use the ↑ and ↓ keys to change the selection." (this series) with "Use the ^ and v keys to change the selection." (sgabios) ;-) * Simplified keyboard code, using enqueue_key now. * Restructed code, to cleanup things and to address review comments. cheers, Gerd Gerd Hoffmann (3): std: add cp437 to unicode map kbd: make enqueue_key … [View More]

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[RFC PATCH 0/2] seabios: add serial console support
by Gerd Hoffmann 04 Jul '16

04 Jul '16

Hi, Ok folks, finally took the time to put serial console support into seabios natively, without requiring sgabios. For now this will use the first serial port in case no vgabios was found, i.e. use something along the lines of "qemu -vga none -serial stdio" to check it out. Design goal is to print as few control sequences as possible, so you get readable logs when writing serial output to a file, but still allow enough control that boot loader menus etc. can be used interactively. The … [View More]

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SeaBIOS July 2016