SeaBIOS September 2010

seabios@seabios.org

13 participants
19 discussions

Re: [SeaBIOS] [Qemu-devel] SeaBIOS error with Juniper FreeBSD kernel

by Kevin O'Connor

On Sun, Feb 21, 2010 at 04:18:38PM -0700, Brandon Bennett wrote: > > On Sat, Feb 20, 2010 at 9:05 PM, Kevin O'Connor <kevin(a)koconnor.net> wrote: > >> Should a kernel fail during boot, I'd suspect it doesn't like one of > >> the apm/pcibios callbacks, or it doesn't like one of the > >> smbios/mptable/acpi tables. You could try compiling the SeaBIOS code > >> (see http://seabios.org/Download ) and increasing the debugging by > >> modifying src/config.h. Specifically, you could increase > >> CONFIG_DEBUG_LEVEL, and set DEBUG_HDL_pcibios32 and DEBUG_HDL_apm to > >> 1. Also, you could try disabling some of the features to see if that > >> prevents the fault (eg, disabling CONFIG_ACPI / CONFIG_SMBIOS / > >> CONFIG_MPTABLE). > > > > I have narrowed it down to SMBIOS. If I disable CONFIG_SMBIOS the > image boots up fine. Gleb, have you seen this thread? Some of the recent changes to smbios that look like possible culprits are: Make SMBIOS table pass MS SVVP test Use MaxCountCPUs during building of per cpu tables. Add malloc_high/fseg() and rework bios table creation to use them. There were other changes, but the comments indicate they were only ports of changes already in bochs. I suppose it's also possible the lack of smbios is turning off some other feature in the guest (eg, acpi) that's the real culprit. -Kevin

10 years, 6 months

[PATCH] support piix PAM registers in KVM

by Gleb Natapov

Without this BIOS fails to remap 0xf0000 memory from ROM to RAM so writes to F-segment modify ROM content instead of memory copy. Since QEMU does not reloads ROMs during reset on next boot modified copy of BIOS is used. Signed-off-by: Gleb Natapov <gleb(a)redhat.com> diff --git a/hw/piix_pci.c b/hw/piix_pci.c index 933ad86..0bf435d 100644 --- a/hw/piix_pci.c +++ b/hw/piix_pci.c @@ -99,10 +99,6 @@ static void i440fx_update_memory_mappings(PCII440FXState *d) int i, r; uint32_t smram, addr; - if (kvm_enabled()) { - /* FIXME: Support remappings and protection changes. */ - return; - } update_pam(d, 0xf0000, 0x100000, (d->dev.config[I440FX_PAM] >> 4) & 3); for(i = 0; i < 12; i++) { r = (d->dev.config[(i >> 1) + (I440FX_PAM + 1)] >> ((i & 1) * 4)) & 3; -- Gleb.

10 years, 7 months

ohci bulk?

by Jonathan A. Kollasch

Hi, http://www.seabios.org/pipermail/seabios/2010-March/000396.html Could anyone explain what the difficulty with OHCI bulk in 16-bit mode is before I spend a few hours discovering for myself? Jonathan Kollasch

11 years, 2 months

[PATCH] fix virtio-blk failure after reboot

by Gleb Natapov

vring_virtqueue should be zeroed otherwise old values will be reused after reboot. Signed-off-by: Gleb Natapov <gleb(a)redhat.com> diff --git a/src/virtio-blk.c b/src/virtio-blk.c index 34d7863..7a25826 100644 --- a/src/virtio-blk.c +++ b/src/virtio-blk.c @@ -109,6 +109,7 @@ init_virtio_blk(u16 bdf) goto fail; } memset(vdrive_g, 0, sizeof(*vdrive_g)); + memset(vq, 0, sizeof(*vq)); vdrive_g->drive.type = DTYPE_VIRTIO; vdrive_g->drive.cntl_id = bdf; vdrive_g->vq = vq; -- Gleb.

11 years, 2 months

Re: [SeaBIOS] [PATCH] Allow rom to grow to 256K.

by H. Peter Anvin

On 09/25/2010 09:55 AM, Kevin O'Connor wrote: > Enable rom size to be over 128K. > > Apparently, only the first 128K of the rom are mirrored to the > 0xc0000-0xfffff area under qemu, so make sure to copy the rom (via > make_bios_writable) in the non-init part of the startup code. This > ensure the copy code is itself available. This is pretty typical... the BIOS is supposed to fit within the 0xe0000..0xfffff area during actual execution. -hpa

11 years, 4 months

[PATCH] Cleanup - it's no longer necessary to manually reset global variables.

by Kevin O'Connor

Now that a soft-reboot forces a hard-reboot, it is no longer necessary to manually reset global variables. --- src/block.c | 11 ----------- src/cdrom.c | 2 -- src/clock.c | 1 - src/coreboot.c | 6 ------ src/disk.h | 1 - src/memmap.c | 7 ------- src/memmap.h | 1 - src/optionroms.c | 5 +---- src/pmm.c | 6 ------ src/post.c | 3 --- src/smp.c | 8 -------- src/stacks.c | 2 -- src/usb-hid.c | 9 --------- src/usb-hid.h | 1 - src/usb.c | 2 -- src/util.h | 1 - src/vgahooks.c | 5 ++--- 17 files changed, 3 insertions(+), 68 deletions(-) diff --git a/src/block.c b/src/block.c index b6b1902..3f4b13f 100644 --- a/src/block.c +++ b/src/block.c @@ -329,14 +329,3 @@ send_disk_op(struct disk_op_s *op) return stack_hop((u32)op, GET_SEG(SS), __send_disk_op); } - - -/**************************************************************** - * Setup - ****************************************************************/ - -void -drive_setup(void) -{ - memset(&Drives, 0, sizeof(Drives)); -} diff --git a/src/cdrom.c b/src/cdrom.c index 655ee00..349e401 100644 --- a/src/cdrom.c +++ b/src/cdrom.c @@ -109,8 +109,6 @@ cdemu_setup(void) { if (!CONFIG_CDROM_EMU) return; - cdemu_drive_gf = NULL; - cdemu_buf_fl = NULL; if (!Drives.cdcount) return; diff --git a/src/clock.c b/src/clock.c index f6a43e9..fcdc698 100644 --- a/src/clock.c +++ b/src/clock.c @@ -211,7 +211,6 @@ timer_setup(void) u32 ticks = (hours * 60 + minutes) * 60 + seconds; ticks = ((u64)ticks * PIT_TICK_RATE) / PIT_TICK_INTERVAL; SET_BDA(timer_counter, ticks); - SET_BDA(timer_rollover, 0); enable_hwirq(0, FUNC16(entry_08)); enable_hwirq(8, FUNC16(entry_70)); diff --git a/src/coreboot.c b/src/coreboot.c index db0063b..50d300c 100644 --- a/src/coreboot.c +++ b/src/coreboot.c @@ -126,8 +126,6 @@ coreboot_fill_map(void) { dprintf(3, "Attempting to find coreboot table\n"); - CBMemTable = NULL; - // Find coreboot table. struct cb_header *cbh = find_cb_header(0, 0x1000); if (!cbh) @@ -290,10 +288,6 @@ coreboot_copy_biostable(void) dprintf(3, "Relocating coreboot bios tables\n"); - // Init variables set in coreboot table memory scan. - PirOffset = 0; - RsdpAddr = 0; - // Scan CB_MEM_TABLE areas for bios tables. int i, count = MEM_RANGE_COUNT(cbm); for (i=0; i<count; i++) { diff --git a/src/disk.h b/src/disk.h index 9e5b083..55a5da3 100644 --- a/src/disk.h +++ b/src/disk.h @@ -234,7 +234,6 @@ void map_hd_drive(struct drive_s *drive_g); void map_cd_drive(struct drive_s *drive_g); int process_op(struct disk_op_s *op); int send_disk_op(struct disk_op_s *op); -void drive_setup(void); // floppy.c extern struct floppy_ext_dbt_s diskette_param_table2; diff --git a/src/memmap.c b/src/memmap.c index 84bc4fa..ea05953 100644 --- a/src/memmap.c +++ b/src/memmap.c @@ -119,13 +119,6 @@ add_e820(u64 start, u64 size, u32 type) //dump_map(); } -// Prep for memmap stuff - init bios table locations. -void -memmap_setup(void) -{ - e820_count = 0; -} - // Report on final memory locations. void memmap_finalize(void) diff --git a/src/memmap.h b/src/memmap.h index d4154c1..01c7ddb 100644 --- a/src/memmap.h +++ b/src/memmap.h @@ -17,7 +17,6 @@ struct e820entry { }; void add_e820(u64 start, u64 size, u32 type); -void memmap_setup(void); void memmap_finalize(void); // A typical OS page size diff --git a/src/optionroms.c b/src/optionroms.c index ceb4060..854c33f 100644 --- a/src/optionroms.c +++ b/src/optionroms.c @@ -72,7 +72,7 @@ struct pnp_data { #define PCIROM_CODETYPE_X86 0 // The end of the last deployed rom. -u32 RomEnd; +u32 RomEnd = BUILD_ROM_START; /**************************************************************** @@ -423,9 +423,6 @@ optionrom_setup(void) void vga_setup(void) { - VGAbdf = -1; - RomEnd = BUILD_ROM_START; - if (! CONFIG_OPTIONROMS) return; diff --git a/src/pmm.c b/src/pmm.c index bb90ff0..e0770ac 100644 --- a/src/pmm.c +++ b/src/pmm.c @@ -193,12 +193,6 @@ malloc_setup(void) ASSERT32FLAT(); dprintf(3, "malloc setup\n"); - ZoneLow.info = ZoneHigh.info = ZoneFSeg.info = NULL; - ZoneTmpLow.info = ZoneTmpHigh.info = NULL; - - // Clear memory in 0xf0000 area. - memset(BiosTableSpace, 0, CONFIG_MAX_BIOSTABLE); - // Populate temp high ram u32 highram = 0; int i; diff --git a/src/post.c b/src/post.c index a72b8cd..4e42731 100644 --- a/src/post.c +++ b/src/post.c @@ -211,7 +211,6 @@ maininit(void) mathcp_setup(); // Initialize mtrr - smp_probe_setup(); mtrr_setup(); // Initialize pci @@ -220,7 +219,6 @@ maininit(void) // Initialize internal tables boot_setup(); - drive_setup(); // Start hardware initialization (if optionrom threading) if (CONFIG_THREADS && CONFIG_THREAD_OPTIONROMS) @@ -327,7 +325,6 @@ void VISIBLE32INIT post(void) { // Detect ram and setup internal malloc. - memmap_setup(); qemu_cfg_port_probe(); ram_probe(); malloc_setup(); diff --git a/src/smp.c b/src/smp.c index 38e117e..40f5451 100644 --- a/src/smp.c +++ b/src/smp.c @@ -127,11 +127,3 @@ smp_probe(void) dprintf(1, "Found %d cpu(s) max supported %d cpu(s)\n", readl(&CountCPUs), MaxCountCPUs); } - -// Reset variables to zero -void -smp_probe_setup(void) -{ - CountCPUs = 0; - smp_mtrr_count = 0; -} diff --git a/src/stacks.c b/src/stacks.c index dade3af..d541a4f 100644 --- a/src/stacks.c +++ b/src/stacks.c @@ -195,8 +195,6 @@ thread_setup(void) { MainThread.next = &MainThread; MainThread.pprev = &MainThread.next; - MainThread.stackpos = NULL; - CanPreempt = 0; } // Return the 'struct thread_info' for the currently running thread. diff --git a/src/usb-hid.c b/src/usb-hid.c index b88d684..168b7fa 100644 --- a/src/usb-hid.c +++ b/src/usb-hid.c @@ -130,15 +130,6 @@ usb_hid_init(struct usb_pipe *pipe return -1; } -void -usb_hid_setup(void) -{ - if (CONFIG_USB_KEYBOARD) - keyboard_pipe = NULL; - if (CONFIG_USB_MOUSE) - mouse_pipe = NULL; -} - /**************************************************************** * Keyboard events diff --git a/src/usb-hid.h b/src/usb-hid.h index d8199b9..7fbcf4b 100644 --- a/src/usb-hid.h +++ b/src/usb-hid.h @@ -6,7 +6,6 @@ struct usb_interface_descriptor; struct usb_pipe; int usb_hid_init(struct usb_pipe *pipe , struct usb_interface_descriptor *iface, int imax); -void usb_hid_setup(void); inline int usb_kbd_active(void); inline int usb_kbd_command(int command, u8 *param); inline int usb_mouse_active(void); diff --git a/src/usb.c b/src/usb.c index cefc5f3..aa8d72c 100644 --- a/src/usb.c +++ b/src/usb.c @@ -423,8 +423,6 @@ usb_setup(void) dprintf(3, "init usb\n"); - usb_hid_setup(); - // Look for USB controllers int ehcibdf = -1; int count = 0; diff --git a/src/util.h b/src/util.h index c27037a..1823fd4 100644 --- a/src/util.h +++ b/src/util.h @@ -358,7 +358,6 @@ extern u32 CountCPUs; extern u32 MaxCountCPUs; void wrmsr_smp(u32 index, u64 val); void smp_probe(void); -void smp_probe_setup(void); // coreboot.c struct cbfs_file; diff --git a/src/vgahooks.c b/src/vgahooks.c index 14678be..eb4dfa8 100644 --- a/src/vgahooks.c +++ b/src/vgahooks.c @@ -13,7 +13,7 @@ #include "config.h" // CONFIG_* // The Bus/Dev/Fn of the primary VGA device. -int VGAbdf VAR16VISIBLE; +int VGAbdf VAR16VISIBLE = -1; // Coreboot board detected. int CBmainboard VAR16VISIBLE; @@ -305,11 +305,10 @@ vgahook_setup(const char *vendor, const char *part) if (! CONFIG_VGAHOOKS) return; - CBmainboard = 0; for (i=0; i<(sizeof(mainboard_list) / sizeof(mainboard_list[0])); i++) { if (!strcmp(vendor, mainboard_list[i].vendor) && !strcmp(part, mainboard_list[i].device)) { - printf("Found mainboard %s %s\n", vendor, part); + printf("Found mainboard %s %s\n", vendor, part); CBmainboard = mainboard_list[i].type; break; } -- 1.7.2.3

11 years, 4 months

[PATCH] Allow rom to grow to 256K.

by Kevin O'Connor

Enable rom size to be over 128K. Apparently, only the first 128K of the rom are mirrored to the 0xc0000-0xfffff area under qemu, so make sure to copy the rom (via make_bios_writable) in the non-init part of the startup code. This ensure the copy code is itself available. --- src/post.c | 13 ++++++------- tools/checkrom.py | 2 ++ 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/src/post.c b/src/post.c index 4a75f51..a72b8cd 100644 --- a/src/post.c +++ b/src/post.c @@ -321,18 +321,11 @@ reloc_init(void) func(); } -static int HaveRunPost; - // Start of Power On Self Test (POST) - the BIOS initilization phase. // This function sets up for and attempts relocation of the init code. void VISIBLE32INIT post(void) { - // Allow writes to modify bios area (0xf0000) - make_bios_writable(); - - HaveRunPost = 1; - // Detect ram and setup internal malloc. memmap_setup(); qemu_cfg_port_probe(); @@ -347,6 +340,8 @@ post(void) * POST entry point ****************************************************************/ +static int HaveRunPost; + // Attempt to invoke a hard-reboot. static void tryReboot(void) @@ -385,6 +380,10 @@ _start(void) // This is a soft reboot - invoke a hard reboot. tryReboot(); + // Allow writes to modify bios area (0xf0000) + make_bios_writable(); + HaveRunPost = 1; + // Perform main setup code. post(); } diff --git a/tools/checkrom.py b/tools/checkrom.py index 42cf2df..6309528 100755 --- a/tools/checkrom.py +++ b/tools/checkrom.py @@ -24,6 +24,8 @@ def main(): finalsize = 64*1024 if datasize > 64*1024: finalsize = 128*1024 + if datasize > 128*1024: + finalsize = 256*1024 # Sanity checks start = symbols['code32flat_start'].offset -- 1.7.2.3

11 years, 4 months

[PATCH] Fix typo preventing relocated space from being used for option roms.

by Kevin O'Connor

--- src/optionroms.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/optionroms.c b/src/optionroms.c index f26a3aa..ceb4060 100644 --- a/src/optionroms.c +++ b/src/optionroms.c @@ -171,7 +171,7 @@ get_pci_rom(struct rom_header *rom) // Return start of code in 0xc0000-0xf0000 space. static inline u32 _max_rom(void) { extern u8 code32flat_start[], code32init_end[]; - return CONFIG_RELOCATE_INIT ? (u32)code32flat_start : (u32)code32init_end; + return CONFIG_RELOCATE_INIT ? (u32)code32init_end : (u32)code32flat_start; } // Return the memory position up to which roms may be located. static inline u32 max_rom(void) { -- 1.7.2.3

11 years, 4 months

Pending patch summary

by Kevin O'Connor

Patches pending: Eduard - Gabriel Munteanu: 20100828: iommu: introduce AMD IOMMU support, initialize it * Likely for post v0.6.1 release Isaku Yamahata: 20100722: acpi: allow qemu to load dsdt as external acpi table. * Needs resolution on acpi patches Isaku Yamahata: 20100819: seabios: acpi: add mcfg table. * Needs resolution on acpi patches Patches pending with author: Isaku Yamahata: 20100726: seabios: pciinit: fix overflow when bar allocation. * Isaku was looking at another approach Sebastian Herbszt: 20100731: EDD fixes * Initial patch looked like it may break backwards compatibility; I haven't seen a new patch. Patches not applied: Arseny Klimovsky: 20100621: Added ACPI SLIC table * There was no explicit patch sent, and approach (eg, recompile seabios) doesn't look scalable. Eduardo Habkost: 20100618: Allow acpi and smbios default strings to be set on config.h * Should no longer be needed now that smbios strings can be passed in via fwcfg. Christopher Gautier: 20100723: Impossible to distinguish between two '/' keys * No explicit patch sent, and I didn't understand the description. Gleb Natapov: 20100614: load hpet info for HPET ACPI table from qemu * Gleb withdrew this patch due to a bug. Concept is pending ACPI resolution. Please let me know if I've missed any thing. -Kevin

11 years, 4 months

[PATCH 00/11] Relocate init code to high memory

by Kevin O'Connor

This patch series enables SeaBIOS to relocate itself out of the e-segment, which enables that space to be used by optionroms. Before this patch series, SeaBIOS would typically use about half of the e-segment. A full debugging build could use nearly all of the e-segment. With this series, SeaBIOS shouldn't need anything beyond the standard f-segment. Future features can likely be added without fear of limiting optionroms. To support relocation, the build determines which parts of the 32bit code is one-time initialization code. It separates that out and stores relocation information for it. The run-time code can then copy the initialization code to high memory and run it at that location. The one-time init code could be called again on a soft-reboot, but SeaBIOS now detects this case and attempts a hard-reboot. Unfortunately, both qemu and kvm don't appear to have a reliable way to hard-reboot - normal reboots don't reset the 0xc0000-0xfffff memory. I've worked around this on qemu by manually resetting that memory. However, kvm doesn't keep a pristine copy of the bios at 0xffff0000. Until this is fixed, this patch series will cause a soft-reboot on kvm to result in a shutdown instead of a reboot. Some details on the patches: Patches 1-4 enhance the build scripts. Patches 5-7 handle soft-reboots. Patches 8-11 enhance the runtime to support relocation. -Kevin Kevin O'Connor (11): Use str.startswith() in python scripts. Modify tools/layoutrom.py to use classes instead of tuples. Separate out init code from the rest of the 32bit flat code. Enhance build to emit relocation information. Try to hard-reboot processor on rerun of post under coreboot. Don't do shadow copying of optionroms when CONFIG_OPTIONROMS_DEPLOYED. Try to hard-reboot on rerun of post even on emulators. Add memalign_tmp() helper function. Move init code from _start() to post(). Move the 32bit init code to high memory at runtime. Enable optionroms to use freed space due to CONFIG_RELOCATE_INIT. Makefile | 6 +- src/apm.c | 14 +- src/config.h | 2 + src/ioport.h | 1 + src/optionroms.c | 18 ++- src/pci.c | 10 + src/pci.h | 1 + src/pmm.c | 8 - src/post.c | 164 +++++++++++++++--- src/ps2port.c | 16 ++- src/ps2port.h | 3 +- src/shadow.c | 40 +++-- src/stacks.c | 4 +- src/types.h | 10 +- src/util.h | 13 ++- tools/checkrom.py | 9 +- tools/checkstack.py | 14 +- tools/layoutrom.py | 465 ++++++++++++++++++++++++++++++++------------------- 18 files changed, 535 insertions(+), 263 deletions(-) -- 1.7.2.3

11 years, 4 months

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SeaBIOS September 2010