K-TEK-M275TP-FN-BL-ML USB keyboard support
by Аладышев Константин
Hello! I'm having problems with K-TEK-M275TP-FN-BL-ML keyboard
(http://www.key-tek.cn/Productview.asp?id=777). It is USB device with
keyboard and touchpad combined. It works in OS correctly, but doesn't work
in SeaBIOS.
I've tried to debug this issue and found that "usb_kbd_setup" function fails
on "(epdesc->wMaxPacketSize != 8)" check, cause "epdesc->wMaxPacketSize" is
actually 32. I've modified this "if" statement to pass 32 value also and now
function completes successfully. But it didn't help to solve my issue. There
are no interrupts from keyboard, "ehci_poll_intr" always returns -1 on
check:
if (token & QTD_STS_ACTIVE) {
// No intrs found.
return -1;
}
I don't know what to do now. What should I check next?
Does SeaBIOS support USB keyboard+touchpad devices at all?
1 year
[PATCH 0/4] RFC: add CRB TPM device
by marcandre.lureau＠redhat.com
From: Marc-André Lureau <marcandre.lureau(a)redhat.com>
Hi,
The following series implements a limited TPM CRB driver. The TIS
device with a TPM 2.0 seems to be ignored by Windows 10, so I
implemented a simple CRB device that I will send shortly on the
qemu-devel. With the CRB device, Windows 10 correctly recognized and
exchange with a TPM 2.0.
As long as the device isn't in qemu, I suppose this series should
remain RFC.
Feedback welcome!
Marc-André Lureau (4):
x86: add readq()
tpm: generalize init_timeout()
tpm: use get_tpm_version() callback
WIP: add TPM CRB device support
src/hw/tpm_drivers.c | 226 ++++++++++++++++++++++++++++++++++++++++++++++++---
src/hw/tpm_drivers.h | 26 ++++++
src/x86.h | 5 ++
3 files changed, 245 insertions(+), 12 deletions(-)
--
2.14.1.146.gd35faa819
1 year, 3 months
Saving a few bytes across a reboot
by Stefan Berger
Kevin,
is it possible to save a few bytes, a pointer, across a reboot? I
have tried to do this by allocating a memory chunk in the fsegement and
storing the pointer there surrounded by 2 'magic' 32 bit values. When
trying to find the magic values on reboot early in handle_post() it
doesn't seem to find them anymore. Is there another memory segment where
SeaBIOS could store the few bytes and find them again?
Regards,
Stefan
1 year, 3 months
[Question] Debug Seabios by GDB with Qemu
by Liu, Jing2
Hello,
I am using Seabios for qemu startup, and interested in the debugging by
GDB to see how the bios works.
Currently, I do it as https://www.seabios.org/Debugging said but met
some problems so that couldn't move on. :(
Could someone give some pointers on what I missed or have to do to
enable the gdb debugging?
Note:
Arch: x86_64 PC
CONFIG_DEBUG_SERIAL is enabled.
CONFIG_RELOCATE_INIT is disabled.
1. After Qemu starts, I run "gdb out/rom32seg.o" in another session,
and do "target remote localhost:1234", it warns me that
"Selected architecture i386 is not compatible with reported target
architecture i386:x86_64". But I didn't find any 64bit rom.
2. I can't set any breakpoints (e.g. maininit), because "Function
maininit not defined". So where does seabios put the symbol table? And
how to break the seabios functions when qemu starts?
Looking forward to your response!
Thanks,
Jing
1 year, 3 months
[PATCH] Fixes to the floppy driver, so it works on real (not emulated) hardware
by Nikolay Nikolov
Several fixes to the floppy driver, so it works on a real floppy controller
with a real floppy. Tested with Coreboot on a motherboard with an ITE IT8712
Super I/O chip (and its built-in floppy controller) and a 1.44MB floppy.
Only one floppy is supported for now and only 1.44MB, but more formats will be
added in the future.
Signed-off-by: Nikolay Nikolov <nickysn(a)users.sourceforge.net>
---
src/hw/floppy.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 69 insertions(+), 14 deletions(-)
diff --git a/src/hw/floppy.c b/src/hw/floppy.c
index f2577c5..674909d 100644
--- a/src/hw/floppy.c
+++ b/src/hw/floppy.c
@@ -34,6 +34,11 @@
#define FLOPPY_GAPLEN 0x1B
#define FLOPPY_FORMAT_GAPLEN 0x6c
#define FLOPPY_PIO_TIMEOUT 1000
+#define FLOPPY_IRQ_TIMEOUT 5000
+#define FLOPPY_STARTUP_TIME 8
+#define FLOPPY_MOTOR_HOLD 255 // Magic value, means motor must not be turned off
+#define FLOPPY_SPECIFY1 0xAF // step rate 12ms, head unload 240ms
+#define FLOPPY_SPECIFY2 0x02 // head load time 4ms, DMA used
// New diskette parameter table adding 3 parameters from IBM
// Since no provisions are made for multiple drive types, most
@@ -191,7 +196,8 @@ static void
floppy_disable_controller(void)
{
dprintf(2, "Floppy_disable_controller\n");
- floppy_dor_write(0x00);
+ // Clear the reset bit (enter reset state) and clear 'enable IRQ and DMA'
+ floppy_dor_write(GET_LOW(FloppyDOR) & ~0x0c);
}
static int
@@ -199,8 +205,9 @@ floppy_wait_irq(void)
{
u8 frs = GET_BDA(floppy_recalibration_status);
SET_BDA(floppy_recalibration_status, frs & ~FRS_IRQ);
+ u32 end = timer_calc(FLOPPY_IRQ_TIMEOUT);
for (;;) {
- if (!GET_BDA(floppy_motor_counter)) {
+ if (timer_check(end)) {
warn_timeout();
floppy_disable_controller();
return DISK_RET_ETIMEOUT;
@@ -226,6 +233,7 @@ floppy_wait_irq(void)
#define FC_READ (0xe6 | (8<<8) | (7<<12) | FCF_WAITIRQ)
#define FC_WRITE (0xc5 | (8<<8) | (7<<12) | FCF_WAITIRQ)
#define FC_FORMAT (0x4d | (5<<8) | (7<<12) | FCF_WAITIRQ)
+#define FC_SPECIFY (0x03 | (2<<8) | (0<<12))
// Send the specified command and it's parameters to the floppy controller.
static int
@@ -302,9 +310,12 @@ static int
floppy_enable_controller(void)
{
dprintf(2, "Floppy_enable_controller\n");
- SET_BDA(floppy_motor_counter, FLOPPY_MOTOR_TICKS);
- floppy_dor_write(0x00);
- floppy_dor_write(0x0c);
+ // Clear the reset bit (enter reset state), but set 'enable IRQ and DMA'
+ floppy_dor_write((GET_LOW(FloppyDOR) & ~0x04) | 0x08);
+ // Real hardware needs a 4 microsecond delay
+ udelay(4);
+ // Set the reset bit (normal operation) and keep 'enable IRQ and DMA' on
+ floppy_dor_write(GET_LOW(FloppyDOR) | 0x0c);
int ret = floppy_wait_irq();
if (ret)
return ret;
@@ -313,6 +324,30 @@ floppy_enable_controller(void)
return floppy_pio(FC_CHECKIRQ, param);
}
+static void
+floppy_turn_on_motor(u8 floppyid)
+{
+ // prevent the motor from being turned off
+ SET_BDA(floppy_motor_counter, FLOPPY_MOTOR_HOLD);
+
+ u8 motor_mask = 0x10 << floppyid;
+ if (GET_LOW(FloppyDOR) & motor_mask) {
+ // If the motor has been started, there's no need to wait for it again
+ floppy_dor_write(motor_mask | 0x0c | floppyid);
+ } else {
+ floppy_dor_write(motor_mask | 0x0c | floppyid);
+
+ msleep(FLOPPY_STARTUP_TIME * 125);
+ }
+}
+
+static void
+floppy_turn_off_motor_delayed(void)
+{
+ // reset the disk motor timeout value of INT 08
+ SET_BDA(floppy_motor_counter, FLOPPY_MOTOR_TICKS);
+}
+
// Activate a drive and send a command to it.
static int
floppy_drive_pio(u8 floppyid, int command, u8 *param)
@@ -324,11 +359,8 @@ floppy_drive_pio(u8 floppyid, int command, u8 *param)
return ret;
}
- // reset the disk motor timeout value of INT 08
- SET_BDA(floppy_motor_counter, FLOPPY_MOTOR_TICKS);
-
- // Turn on motor of selected drive, DMA & int enabled, normal operation
- floppy_dor_write((floppyid ? 0x20 : 0x10) | 0x0c | floppyid);
+ // Turn on motor of selected drive and wait for it to get up to speed
+ floppy_turn_on_motor(floppyid);
// Send command.
int ret = floppy_pio(command, param);
@@ -363,6 +395,15 @@ floppy_drive_recal(u8 floppyid)
return DISK_RET_SUCCESS;
}
+static int
+floppy_drive_specify(void)
+{
+ u8 param[2];
+ param[0] = FLOPPY_SPECIFY1;
+ param[1] = FLOPPY_SPECIFY2;
+ return floppy_pio(FC_SPECIFY, param);
+}
+
static int
floppy_drive_readid(u8 floppyid, u8 data_rate, u8 head)
{
@@ -433,13 +474,23 @@ floppy_prep(struct drive_s *drive_gf, u8 cylinder)
!(GET_BDA(floppy_media_state[floppyid]) & FMS_MEDIA_DRIVE_ESTABLISHED)) {
// Recalibrate drive.
int ret = floppy_drive_recal(floppyid);
- if (ret)
+ if (ret) {
+ floppy_turn_off_motor_delayed();
return ret;
+ }
// Sense media.
ret = floppy_media_sense(drive_gf);
- if (ret)
+ if (ret) {
+ floppy_turn_off_motor_delayed();
+ return ret;
+ }
+
+ ret = floppy_drive_specify();
+ if (ret) {
+ floppy_turn_off_motor_delayed();
return ret;
+ }
}
// Seek to cylinder if needed.
@@ -449,8 +500,10 @@ floppy_prep(struct drive_s *drive_gf, u8 cylinder)
param[0] = floppyid;
param[1] = cylinder;
int ret = floppy_drive_pio(floppyid, FC_SEEK, param);
- if (ret)
+ if (ret) {
+ floppy_turn_off_motor_delayed();
return ret;
+ }
SET_BDA(floppy_track[floppyid], cylinder);
}
@@ -489,9 +542,11 @@ floppy_dma_cmd(struct disk_op_s *op, int count, int command, u8 *param)
dprintf(1, "floppy error: %02x %02x %02x %02x %02x %02x %02x\n"
, param[0], param[1], param[2], param[3]
, param[4], param[5], param[6]);
+ floppy_turn_off_motor_delayed();
return DISK_RET_ECONTROLLER;
}
+ floppy_turn_off_motor_delayed();
return DISK_RET_SUCCESS;
}
@@ -663,7 +718,7 @@ floppy_tick(void)
// time to turn off drive(s)?
u8 fcount = GET_BDA(floppy_motor_counter);
- if (fcount) {
+ if (fcount && (fcount != FLOPPY_MOTOR_HOLD)) {
fcount--;
SET_BDA(floppy_motor_counter, fcount);
if (fcount == 0)
--
2.14.3
1 year, 3 months
coreboot: modifying seabios bootenter list dynamically
by Francesco Lucconi
I'm looking for a simple method that enables a dynamic way to select one of
the several options listed into CBFS bootorder file but unfortunatelly I'm
finding out that this file is static and it could be edited and configured
just on build time.
My specific goal is about a dynamic OS bootstrapping or via USB storage
device or via pci netcard automatically without pressing any keyboard
buttons.
(the auto mode is guaranteed with a gpio signal that it is switches between
these 2 scenarios.)
Is it correct? Do you know if I can use it differently?
1 year, 3 months
[PATCH] build: allow setting tools path from the environment
by Roger Pau Monne
Allow setting the path to as, ld, objcopy, objdump, strip and python
from the environment.
This is required for building SeaBIOS on FreeBSD, which will switch
the default ld to lld very soon, and lld is not capable of building
SeaBIOS at the moment.
Building SeaBIOS on FreeBSD after the switch to lld will require
setting LD=/path/to/gnu/ld at build time.
Signed-off-by: Roger Pau Monné <roger.pau(a)citrix.com>
---
Cc: Kevin O'Connor <kevin(a)koconnor.net>
Cc: Ed Maste <emaste(a)freebsd.org>
---
Makefile | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/Makefile b/Makefile
index eb8ad58..0fcb1bf 100644
--- a/Makefile
+++ b/Makefile
@@ -17,12 +17,12 @@ CROSS_PREFIX=
ifneq ($(CROSS_PREFIX),)
CC=$(CROSS_PREFIX)gcc
endif
-AS=$(CROSS_PREFIX)as
-LD=$(CROSS_PREFIX)ld
-OBJCOPY=$(CROSS_PREFIX)objcopy
-OBJDUMP=$(CROSS_PREFIX)objdump
-STRIP=$(CROSS_PREFIX)strip
-PYTHON=python
+AS?=$(CROSS_PREFIX)as
+LD?=$(CROSS_PREFIX)ld
+OBJCOPY?=$(CROSS_PREFIX)objcopy
+OBJDUMP?=$(CROSS_PREFIX)objdump
+STRIP?=$(CROSS_PREFIX)strip
+PYTHON?=python
CPP=cpp
IASL:=iasl
LD32BIT_FLAG:=-melf_i386
--
2.15.1
1 year, 3 months
[PATCH RFC] x86: use volatile asm for read/write{b, w, l} implementations
by Vitaly Kuznetsov
QEMU/KVM guests running nested on top of Hyper-V fail to boot with
virtio-blk-pci disks, the debug log ends with
Booting from Hard Disk...
call32_smm 0x000edd01 e97a0
handle_smi cmd=b5 smbase=0x000a0000
vp notify fe007000 (2) -- 0x0
vp read fe005000 (1) -> 0x0
handle_smi cmd=b5 smbase=0x000a0000
call32_smm done 0x000edd01 0
Booting from 0000:7c00
call32_smm 0x000edd01 e97a4
handle_smi cmd=b5 smbase=0x000a0000
vp notify fe007000 (2) -- 0x0
In resume (status=0)
In 32bit resume
Attempting a hard reboot
...
I bisected the breakage to the following commit:
commit f46739b1a819750c63fb5849844d99cc2ab001e8
Author: Kevin O'Connor <kevin(a)koconnor.net>
Date: Tue Feb 2 22:34:27 2016 -0500
virtio: Convert to new PCI BAR helper functions
But the commit itself appears to be correct. The problem is in how
writew() function compiles into vp_notify(). For example, if we drop
'volatile' qualifier from the current writew() implementation everything
starts to work. If we disassemble these two versions (as of f46739b1a)
the difference will be:
00000000 <vp_notify>:
With 'volatile' (current) Without 'volatile'
0: push %ebx 0: push %ebx
1: mov %eax,%ecx 1: mov %eax,%ecx
3: mov 0x1518(%edx),%eax 3: mov 0x1518(%edx),%eax
9: cmpb $0x0,0x2c(%ecx) 9: cmpb $0x0,0x2c(%ecx)
d: je 2f <vp_notify+0x2f> d: je 2e <vp_notify+0x2e>
f: mov 0x151c(%edx),%edx f: mov 0x151c(%edx),%edx
15: mov 0x28(%ecx),%ebx
18: imul %edx,%ebx 15: imul 0x28(%ecx),%edx
1b: mov 0x8(%ecx),%edx 19: mov 0x8(%ecx),%ebx
1e: add %ebx,%edx
20: cmpb $0x0,0xe(%ecx) 1c: cmpb $0x0,0xe(%ecx)
24: je 2a <vp_notify+0x2a> 20: je 28 <vp_notify+0x28>
22: add %ebx,%edx
26: out %ax,(%dx) 24: out %ax,(%dx)
28: jmp 48 <vp_notify+0x48> 26: jmp 47 <vp_notify+0x47>
2a: mov %ax,(%edx) 28: mov %ax,(%ebx,%edx,1)
2d: jmp 48 <vp_notify+0x48> 2c: jmp 47 <vp_notify+0x47>
2f: lea 0x20(%ecx),%ebx 2e: lea 0x20(%ecx),%ebx
32: cltd 31: cltd
33: push %edx 32: push %edx
34: push %eax 33: push %eax
35: mov $0x2,%ecx 34: mov $0x2,%ecx
3a: mov $0x10,%edx 39: mov $0x10,%edx
3f: mov %ebx,%eax 3e: mov %ebx,%eax
41: call 42 <vp_notify+0x42> 40: call 41 <vp_notify+0x41>
46: pop %eax 45: pop %eax
47: pop %edx 46: pop %edx
48: pop %ebx 47: pop %ebx
49: ret 48: ret
My eyes fail to see an obvious compiler flaw here but probably the
mov difference (at '2a' old, '28' new) is to blame. Doing some other
subtle changes (e.g. adding local variables to the function) help in
some cases too. At this point I got a bit lost with my debug so I
looked at how Linux does this stuff and it seems we're not using
'*(volatile u16) = ' there. Rewriting write/read{b,w,l} with volatile
asm help.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
---
RFC: This is rather an ongoing debug as I'm not able to point finger
at the real culprit yet, I'd be grateful for any help and suggestions.
In particular, I don't quite understand why nested virtualization
makes a difference here.
---
src/x86.h | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/src/x86.h b/src/x86.h
index 53378e9..d45122c 100644
--- a/src/x86.h
+++ b/src/x86.h
@@ -199,30 +199,27 @@ static inline void smp_wmb(void) {
}
static inline void writel(void *addr, u32 val) {
- barrier();
- *(volatile u32 *)addr = val;
+ asm volatile("movl %0, %1" : : "d"(val), "m"(*(u32 *)addr) : "memory");
}
static inline void writew(void *addr, u16 val) {
- barrier();
- *(volatile u16 *)addr = val;
+ asm volatile("movw %0, %1" : : "d"(val), "m"(*(u16 *)addr) : "memory");
}
static inline void writeb(void *addr, u8 val) {
- barrier();
- *(volatile u8 *)addr = val;
+ asm volatile("movb %0, %1" : : "d"(val), "m"(*(u8 *)addr) : "memory");
}
static inline u32 readl(const void *addr) {
- u32 val = *(volatile const u32 *)addr;
- barrier();
+ u32 val;
+ asm volatile("movl %1, %0" : "=d"(val) : "m"(*(u32 *)addr) : "memory");
return val;
}
static inline u16 readw(const void *addr) {
- u16 val = *(volatile const u16 *)addr;
- barrier();
+ u16 val;
+ asm volatile("movw %1, %0" : "=d"(val) : "m"(*(u16 *)addr) : "memory");
return val;
}
static inline u8 readb(const void *addr) {
- u8 val = *(volatile const u8 *)addr;
- barrier();
+ u8 val;
+ asm volatile("movb %1, %0" : "=d"(val) : "m"(*(u8 *)addr) : "memory");
return val;
}
--
2.14.3
1 year, 3 months
[PATCH] paravirt: Allow both Red Hat and Amazon PCI HB subsystem vendor and device ids
by Filippo Sironi
Signed-off-by: Filippo Sironi <sironi(a)amazon.de>
---
src/fw/paravirt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/fw/paravirt.c b/src/fw/paravirt.c
index 0770c47b12e7..163b70c6473f 100644
--- a/src/fw/paravirt.c
+++ b/src/fw/paravirt.c
@@ -83,8 +83,8 @@ static void qemu_detect(void)
u16 sv = pci_config_readw(0, PCI_SUBSYSTEM_VENDOR_ID);
u16 sd = pci_config_readw(0, PCI_SUBSYSTEM_ID);
- if (sv != 0x1af4 || /* Red Hat, Inc */
- sd != 0x1100) /* Qemu virtual machine */
+ if (!(sv == 0x1af4 && sd == 0x1100) && /* Red Hat, Inc. QEMU VM */
+ !(sv == 0x1d0f && sd == 0x1237)) /* Amazon.com, Inc. i440fx VM */
return;
PlatformRunningOn |= PF_QEMU;
--
2.7.4
1 year, 4 months
