On Mon, Aug 12, Mark Kettenis wrote:
> > Date: Sun, 11 Aug 2019 23:49:10 +0000
> > From: ioh <m...@sdf.org>
> >
> > I have been able to successfully install OpenBSD Current Aug 06
> > 2019 on the Olimex Teres laptop. It has very similar hardware to
> > the PineBook, arm64 allwinner, etc. I used u-boot-sunxi-with-spl.bin
> > from u-boot v2019.07 (teres_i_defconfig) and Arm Trusted Firmware
> > v2.1. The dtb (sun50i-a64-teres-i.dtb) is from the OpenBSD 6.5-release
> > ports tree.
> >
> > To complete kernel initialization from either the install bsd.rd
> > or bsd from an install, the ohci driver must be disabled. I have
> > included the serial console output and dmesg of first a boot without
> > the ohci driver disabled, and then the boot log of my successful
> > install with ohci disabled. According to linux dmesg or the
> > sun50i-a64-teres-i.dts, ohci is available so the driver is probed
> > correctly - but even after several minutes the initialization process
> > will not continue past the line "ohci0 at simplebus0".
>
> The hang at that point suggests that accessing the OHCI registers
> hangs the machine. That happened in the past when the relevant clock
> wasn't running or when the OHCI logic block wasn't brought out of
> reset. But those issues got fixed and ohci(4) works fine on other
> boards that use the Allwinner A64 SoC. What seems to be different is
> that the Teres-i only has the 2nd USB controller enabled.
>
> Adding printfs is probably the way to go here. Start with
> ohci_fdt_attach() in sys/dev/fdt/ohci_fdt.c and try to pinpoint at
> which point it hangs.
This is the printf's I added, followed by the dmesg output. The
point at which init hangs is at bus_space_read_4() in ohci_fdt_attach().
Do you need further digging in bus_space_read_4, ie adding printf's
to that function too to find the exact line further, or is that
enough information?
Index: dev/fdt/ohci_fdt.c
===================================================================
RCS file: /cvs/src/sys/dev/fdt/ohci_fdt.c,v
retrieving revision 1.2
diff -u -p -u -p -r1.2 ohci_fdt.c
--- dev/fdt/ohci_fdt.c 7 Jan 2019 03:41:06 -0000 1.2
+++ dev/fdt/ohci_fdt.c 13 Aug 2019 00:53:06 -0000
@@ -71,6 +71,8 @@ ohci_fdt_match(struct device *parent, vo
void
ohci_fdt_attach(struct device *parent, struct device *self, void *aux)
{
+printf("\nDEBUG: entering ohci_fdt_attach\n");
+
struct ohci_fdt_softc *sc = (struct ohci_fdt_softc *)self;
struct fdt_attach_args *faa = aux;
char *devname = sc->sc.sc_bus.bdev.dv_xname;
@@ -96,9 +98,13 @@ ohci_fdt_attach(struct device *parent, s
clock_enable_all(sc->sc_node);
reset_deassert_all(sc->sc_node);
+printf("DEBUG: Make it to here\n");
+
/* Record what interrupts were enabled by SMM/BIOS. */
sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh,
OHCI_INTERRUPT_ENABLE);
+
+printf("DEBUG: Do not make it here\n");
/* Disable interrupts, so we don't get any spurious ones. */
bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
OpenBSD 6.5-current (CUSTOM) #2: Mon Aug 12 17:45:21 PDT 2019
r...@hedges.my.domain:/sys/arch/arm64/compile/CUSTOM
real mem = 2018398208 (1924MB)
avail mem = 1928859648 (1839MB)
mainbus0 at root: Olimex A64 Teres-I
cpu0 at mainbus0 mpidr 0: ARM Cortex-A53 r0p4
cpu0: 32KB 64b/line 2-way L1 VIPT I-cache, 32KB 64b/line 4-way L1 D-cache
cpu0: 512KB 64b/line 16-way L2 cache
efi0 at mainbus0: UEFI 2.7
efi0: Das U-Boot rev 0x20190700
apm0 at mainbus0
psci0 at mainbus0: PSCI 1.1, SMCCC 1.1
"osc24M_clk" at mainbus0 not configured
"osc32k_clk" at mainbus0 not configured
"internal-osc-clk" at mainbus0 not configured
"sound_spdif" at mainbus0 not configured
"spdif-out" at mainbus0 not configured
agtimer0 at mainbus0: tick rate 24000 KHz
simplebus0 at mainbus0: "soc"
sxiccmu0 at simplebus0
sxipio0 at simplebus0: 103 pins
ampintc0 at simplebus0 nirq 224, ncpu 4: "interrupt-controller"
sxiccmu1 at simplebus0
sxipio1 at simplebus0: 13 pins
sxirsb0 at simplebus0
axppmic0 at sxirsb0 addr 0x3a3: AXP803
"de2" at simplebus0 not configured
"syscon" at simplebus0 not configured
"dma-controller" at simplebus0 not configured
"lcd-controller" at simplebus0 not configured
"lcd-controller" at simplebus0 not configured
sximmc0 at simplebus0
sdmmc0 at sximmc0: 4-bit, sd high-speed, mmc high-speed, dma
sximmc1 at simplebus0
sdmmc1 at sximmc1: 4-bit, sd high-speed, mmc high-speed, dma
sximmc2 at simplebus0
sdmmc2 at sximmc2: 8-bit, sd high-speed, mmc high-speed, dma
"eeprom" at simplebus0 not configured
"phy" at simplebus0 not configured
ehci0 at simplebus0
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Generic EHCI root hub" rev 2.00/1.00
addr 1
ohci0 at simplebus0
DEBUG: entering ohci_fdt_attach
DEBUG: Make it to here
--
ioh
