I'd like to have SerialICE working on my Tyan boards, but I don't see any output from the serial port after my porting attempt. I took a step back and tried Qemu and SimNOW. I see the SerialICE prompt, but I don't know how to test that interface. SerialICE v1.5 (Jun 21 2010)
I was expecting to be able to enter some commands at the prompt, to read/write memory locations and registers. I'm attaching the patches I am working with: emulators.diff: Add trivial support for qemu and copy support for SimNOW from Tyan s2912 since they use the same SuperIO chip. pci_read.diff: Add pci_read functions, since my Tyan s2895 Serial init code uses them (copied from Coreboot) tyan.diff: Add code for s2895 (s2892 is just a copy of s2895 right now) debug_romstrap.diff: Make the romstrap end up looking like Coreboot's romstrap. Status: Qemu & SimNOW give me a prompt, but I don't know how to interact with it. Tyan s2895 - No output. Signed-off-by: Myles Watson <mylesgw@gmail.com> Thanks, Myles
On 06/21/2010 01:00 PM, Myles Watson wrote:
I'd like to have SerialICE working on my Tyan boards, but I don't see any output from the serial port after my porting attempt.
I took a step back and tried Qemu and SimNOW. I see the SerialICE prompt, but I don't know how to test that interface.
SerialICE v1.5 (Jun 21 2010)
not sure what you mean test it? Have you read the README's? If your getting the prompt your good to go :-)
I was expecting to be able to enter some commands at the prompt, to read/write memory locations and registers.
yes, why can't you?
I'm attaching the patches I am working with: emulators.diff: Add trivial support for qemu and copy support for SimNOW from Tyan s2912 since they use the same SuperIO chip. pci_read.diff: Add pci_read functions, since my Tyan s2895 Serial init code uses them (copied from Coreboot) tyan.diff: Add code for s2895 (s2892 is just a copy of s2895 right now) debug_romstrap.diff: Make the romstrap end up looking like Coreboot's romstrap.
Status: Qemu& SimNOW give me a prompt, but I don't know how to interact with it. Tyan s2895 - No output.
what is the superio on your s2895? -- Thanks, Joseph Smith Set-Top-Linux www.settoplinux.org
On 06/21/2010 01:00 PM, Myles Watson wrote:
I'd like to have SerialICE working on my Tyan boards, but I don't see any output from the serial port after my porting attempt.
I took a step back and tried Qemu and SimNOW. I see the SerialICE prompt, but I don't know how to test that interface.
SerialICE v1.5 (Jun 21 2010)
not sure what you mean test it? Have you read the README's? If your getting the prompt your good to go :-)
I have, but it's always possible that I missed something.
I was expecting to be able to enter some commands at the prompt, to read/write memory locations and registers.
yes, why can't you? I figured it out a little better since then. I wasn't getting any response to my queries. Now I can do reads and writes from the prompt.
I'm attaching the patches I am working with: emulators.diff: Add trivial support for qemu and copy support for SimNOW from Tyan s2912 since they use the same SuperIO chip. pci_read.diff: Add pci_read functions, since my Tyan s2895 Serial init code uses them (copied from Coreboot) tyan.diff: Add code for s2895 (s2892 is just a copy of s2895 right now) debug_romstrap.diff: Make the romstrap end up looking like Coreboot's romstrap.
Status: Qemu& SimNOW give me a prompt, but I don't know how to interact with it. Tyan s2895 - No output.
what is the superio on your s2895?
smsc lpc47b397. I copied the initialization code from Coreboot. Thanks, Myles
On 6/22/10 6:23 AM, Myles Watson wrote:
On 06/21/2010 01:00 PM, Myles Watson wrote:
I'd like to have SerialICE working on my Tyan boards, but I don't see any output from the serial port after my porting attempt.
I took a step back and tried Qemu and SimNOW. I see the SerialICE prompt, but I don't know how to test that interface.
SerialICE v1.5 (Jun 21 2010)
not sure what you mean test it? Have you read the README's? If your getting the prompt your good to go :-)
I have, but it's always possible that I missed something.
I was expecting to be able to enter some commands at the prompt, to read/write memory locations and registers.
yes, why can't you?
I figured it out a little better since then. I wasn't getting any response to my queries. Now I can do reads and writes from the prompt.
I'm attaching the patches I am working with: emulators.diff: Add trivial support for qemu and copy support for SimNOW from Tyan s2912 since they use the same SuperIO chip. pci_read.diff: Add pci_read functions, since my Tyan s2895 Serial init code uses them (copied from Coreboot) tyan.diff: Add code for s2895 (s2892 is just a copy of s2895 right now) debug_romstrap.diff: Make the romstrap end up looking like Coreboot's
romstrap.
Status: Qemu& SimNOW give me a prompt, but I don't know how to interact with
it.
Tyan s2895 - No output.
what is the superio on your s2895?
smsc lpc47b397. I copied the initialization code from Coreboot.
You might also need to set up certain parts of the southbridge (worst case HT enumeration?) Stefan
Tyan s2895 - No output.
what is the superio on your s2895?
smsc lpc47b397. I copied the initialization code from Coreboot.
You might also need to set up certain parts of the southbridge (worst case HT enumeration?)
I'll look again. I thought I'd be safe if I copied the early initialization up to console init. I'd figured that the romstrap was wrong, but even after changing it to match Coreboot I'm not getting anything. Thanks, Myles
On 06/22/2010 09:59 AM, Myles Watson wrote:
Tyan s2895 - No output.
what is the superio on your s2895?
smsc lpc47b397. I copied the initialization code from Coreboot.
You might also need to set up certain parts of the southbridge (worst case HT enumeration?)
I'll look again. I thought I'd be safe if I copied the early initialization up to console init. I'd figured that the romstrap was wrong, but even after changing it to match Coreboot I'm not getting anything.
Has s2895 always used CAR? If not you could go back to a revision that used romcc and see how that was setup. Maybe? -- Thanks, Joseph Smith Set-Top-Linux www.settoplinux.org
I'll look again. I thought I'd be safe if I copied the early initialization up to console init. I'd figured that the romstrap was wrong, but even after changing it to match Coreboot I'm not getting anything. It works now.
Has s2895 always used CAR? If not you could go back to a revision that used romcc and see how that was setup. Maybe?
Good suggestion. This all gets set up before CAR, so I just had to go back and find what I'd missed. alive.diff: Fix a minor spelling error. emulators.diff: Support qemu and SimNOW K8 pci_read.diff: Add pci_read functions so that the Tyan setup works tyan.diff: Add support for Tyan s2895 and s2892 All boot tested. Signed-off-by: Myles Watson <mylesgw@gmail.com> Thanks, Myles
On 06/22/2010 04:06 PM, Myles Watson wrote:
I'll look again. I thought I'd be safe if I copied the early initialization up to console init. I'd figured that the romstrap was wrong, but even after changing it to match Coreboot I'm not getting anything. It works now.
Has s2895 always used CAR? If not you could go back to a revision that used romcc and see how that was setup. Maybe?
Good suggestion. This all gets set up before CAR, so I just had to go back and find what I'd missed.
alive.diff: Fix a minor spelling error. emulators.diff: Support qemu and SimNOW K8 pci_read.diff: Add pci_read functions so that the Tyan setup works tyan.diff: Add support for Tyan s2895 and s2892
All boot tested.
Cool! just curious, so what was it? -- Thanks, Joseph Smith Set-Top-Linux www.settoplinux.org
All boot tested.
Cool! just curious, so what was it?
This function gets called twice. + smsc_enable_serial(SUPERIO_CONFIG_PORT, LPC47B397_RT, SUPERIO_GPIO_IO_BASE); ... + smsc_enable_serial(SUPERIO_CONFIG_PORT, LPC47B397_SP1, CONFIG_SERIAL_PORT); I didn't notice that, and figured I was done after the call to enable_serial. It should probably be renamed to enable_func or something, but it's working now. Thanks, Myles
On 6/22/10 10:06 PM, Myles Watson wrote:
I'll look again. I thought I'd be safe if I copied the early initialization up to console init. I'd figured that the romstrap was wrong, but even after changing it to match Coreboot I'm not getting anything. It works now.
Oops. I committed the wrong set of patches. Will have to look at the differences later. Also, your debug-romstrap patch is still missing. is it needed? Stefan
participants (4)
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Joseph Smith -
Myles Watson -
Stefan Reinauer -
Stefan Reinauer