Hi,
My board does not have any Power Management IC.
Without the following patch, the bood ends with an oops.
How can I further debug this, ie trace through the assembly
in arch/arm/mach-omap2/sleep34xx.S ?
--
Patch needed to boot to userspace :
Index: linux-3.4.3/arch/arm/mach-omap2/pm34xx.c
===================================================================
--- linux-3.4.3.orig/arch/arm/mach-omap2/pm34xx.c 2012-06-17
20:21:44.000000000 +0200
+++ linux-3.4.3/arch/arm/mach-omap2/pm34xx.c 2012-06-22 16:26:38.000000000 +0200
@@ -403,7 +403,7 @@
trace_power_start(POWER_CSTATE, 1, smp_processor_id());
trace_cpu_idle(1, smp_processor_id());
- omap_sram_idle();
+ // omap_sram_idle();
trace_power_end(smp_processor_id());
trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id());
--
Bootlog without patch :
Booting Linux on physical CPU 0
Linux version 3.4.3 (cynove@jp) (gcc version 4.3.2 (Sourcery G++ Lite
2008q3-41) ) #2 PREEMPT Fri Jun 22 16:33:06 CEST 2012
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Cynove CYDM3730
Reserving 4194304 bytes SDRAM for VRAM
Memory policy: ECC disabled, Data cache writeback
OMAP3630 ES1.2 (l2cache iva sgx neon isp 192mhz_clk )
Clocking rate (Crystal/Core/MPU): 19.2/400/832 MHz
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 45056
Kernel command line: console=ttyO2,115200n8 rdinit=/sbin/init
initrd=0x83000000,1536k
mtdparts=omap2-nand.0:1024k(bootloaders),3072k(linux),1536k(ramfs),-(usr)
ubi.mtd=3,2048 mem=55M@0x80000000 mem=128M@0x88000000
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 55MB 123MB = 178MB total
Memory: 174688k/174688k available, 12704k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc03c5080 (3829 kB)
.init : 0xc03c6000 - 0xc03ef000 ( 164 kB)
.data : 0xc03f0000 - 0xc042b6c8 ( 238 kB)
.bss : 0xc042b6ec - 0xc043bdc8 ( 66 kB)
NR_IRQS:440
IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts
Total of 96 interrupts on 1 active controller
OMAP clockevent source: GPTIMER1 at 32768 Hz
sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
Console: colour dummy device 80x30
Calibrating delay loop... 831.32 BogoMIPS (lpj=3246080)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x802ad4b0 - 0x802ad508
devtmpfs: initialized
dummy:
NET: Registered protocol family 16
GPMC revision 5.0
gpiochip_add: registered GPIOs 0 to 31 on device: gpio
OMAP GPIO hardware version 2.5
gpiochip_add: registered GPIOs 32 to 63 on device: gpio
gpiochip_add: registered GPIOs 64 to 95 on device: gpio
gpiochip_add: registered GPIOs 96 to 127 on device: gpio
gpiochip_add: registered GPIOs 128 to 159 on device: gpio
gpiochip_add: registered GPIOs 160 to 191 on device: gpio
omap_mux_init: Add partition: #1: core, flags: 0
GPMC CS4: cs_on : 2 ticks, 10 ns (was 1 ticks) 10 ns
GPMC CS4: cs_rd_off : 12 ticks, 60 ns (was 16 ticks) 60 ns
GPMC CS4: cs_wr_off : 12 ticks, 60 ns (was 16 ticks) 60 ns
GPMC CS4: adv_on : 0 ticks, 0 ns (was 1 ticks) 0 ns
GPMC CS4: adv_rd_off: 0 ticks, 0 ns (was 2 ticks) 0 ns
GPMC CS4: adv_wr_off: 0 ticks, 0 ns (was 2 ticks) 0 ns
GPMC CS4: oe_on : 2 ticks, 10 ns (was 3 ticks) 10 ns
GPMC CS4: oe_off : 12 ticks, 60 ns (was 16 ticks) 60 ns
GPMC CS4: we_on : 2 ticks, 10 ns (was 3 ticks) 10 ns
GPMC CS4: we_off : 12 ticks, 60 ns (was 16 ticks) 60 ns
GPMC CS4: rd_cycle : 14 ticks, 70 ns (was 17 ticks) 70 ns
GPMC CS4: wr_cycle : 14 ticks, 70 ns (was 17 ticks) 70 ns
GPMC CS4: access : 12 ticks, 60 ns (was 15 ticks) 60 ns
GPMC CS4: page_burst_access: 0 ticks, 0 ns (was 1 ticks) 0 ns
GPMC CS4: wr_data_mux_bus: 0 ticks, 0 ns (was 3 ticks) 0 ns
GPMC CS4: wr_access : 2 ticks, 10 ns (was 15 ticks) 10 ns
OMAP DMA hardware revision 5.0
bio: create slab <bio-0> at 0
SCSI subsystem initialized
omap2_mcspi omap2_mcspi.1: master is unqueued, this is deprecated
omap2_mcspi omap2_mcspi.2: master is unqueued, this is deprecated
omap2_mcspi omap2_mcspi.3: master is unqueued, this is deprecated
omap2_mcspi omap2_mcspi.4: master is unqueued, this is deprecated
omap_i2c omap_i2c.1: bus 1 rev1.4.0 at 100 kHz
Linux media interface: v0.10
Linux video capture interface: v2.00
omap-iommu omap-iommu.0: isp registered
Switching to clocksource 32k_counter
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
Trying to unpack rootfs image as initramfs...
Freeing initrd memory: 1536K
msgmni has been set to 344
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
OMAP DSS rev 2.0
omapdss_venc supply vdda_dac not found, using dummy regulator
omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq = 72) is a OMAP UART0
omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq = 73) is a OMAP UART1
omap_uart.2: ttyO2 at MMIO 0x49020000 (irq = 74) is a OMAP UART2
console [ttyO2] enabled
omap_uart.3: ttyO3 at MMIO 0x49042000 (irq = 80) is a OMAP UART3
brd: module loaded
loop: module loaded
ONFI param page 0 valid
ONFI flash detected
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xac (Micron omap2-nand.0)
NAND bus width 8 instead 16 bit
No NAND device found
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xac (Micron NAND 512MiB
1,8V 8-bit)
4 cmdlinepart partitions found on MTD device omap2-nand.0
Creating 4 MTD partitions on "omap2-nand.0":
0x000000000000-0x000000100000 : "bootloaders"
0x000000100000-0x000000400000 : "linux"
0x000000400000-0x000000580000 : "ramfs"
0x000000580000-0x000020000000 : "usr"
UBI: attaching mtd3 to ubi0
UBI: physical eraseblock size: 131072 bytes (128 KiB)
UBI: logical eraseblock size: 126976 bytes
UBI: smallest flash I/O unit: 2048
UBI: sub-page size: 512
UBI: VID header offset: 2048 (aligned 2048)
UBI: data offset: 4096
UBI: max. sequence number: 369
UBI: attached mtd3 to ubi0
UBI: MTD device name: "usr"
UBI: MTD device size: 506 MiB
UBI: number of good PEBs: 4029
UBI: number of bad PEBs: 23
UBI: number of corrupted PEBs: 0
UBI: max. allowed volumes: 128
UBI: wear-leveling threshold: 4096
UBI: number of internal volumes: 1
UBI: number of user volumes: 1
UBI: available PEBs: 0
UBI: total number of reserved PEBs: 4029
UBI: number of PEBs reserved for bad PEB handling: 40
UBI: max/mean erase counter: 1/0
UBI: image sequence number: 809116472
UBI: background thread "ubi_bgt0d" started, PID 372
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
omap_wdt: OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec
mpu.0 supply vcc not found, using dummy regulator
omap_cpufreq_init: physical regulator not present for MPU
omap_hsmmc.0 supply vmmc not found, using dummy regulator
omap_hsmmc.0 supply vmmc_aux not found, using dummy regulator
omap_hsmmc omap_hsmmc.0: could not set regulator OCR (-22)
------------[ cut here ]------------
WARNING: at drivers/regulator/core.c:1554 _regulator_disable+0x30/0x10c()
unbalanced disables for dummy
Modules linked in:
[<c0012fd8>] (unwind_backtrace+0x0/0x128) from [<c002cf24>]
(warn_slowpath_common+0x4c/0x64)
[<c002cf24>] (warn_slowpath_common+0x4c/0x64) from [<c002cfbc>]
(warn_slowpath_fmt+0x2c/0x3c)
[<c002cfbc>] (warn_slowpath_fmt+0x2c/0x3c) from [<c0183080>]
(_regulator_disable+0x30/0x10c)
[<c0183080>] (_regulator_disable+0x30/0x10c) from [<c0183178>]
(regulator_disable+0x1c/0x48)
[<c0183178>] (regulator_disable+0x1c/0x48) from [<c021d64c>]
(omap_hsmmc_set_power+0xc0/0x11c)
[<c021d64c>] (omap_hsmmc_set_power+0xc0/0x11c) from [<c021d564>]
(omap_hsmmc_reg_get+0x174/0x19c)
[<c021d564>] (omap_hsmmc_reg_get+0x174/0x19c) from [<c02aa720>]
(omap_hsmmc_probe+0x408/0x6a0)
[<c02aa720>] (omap_hsmmc_probe+0x408/0x6a0) from [<c01a89a8>]
(platform_drv_probe+0x18/0x1c)
[<c01a89a8>] (platform_drv_probe+0x18/0x1c) from [<c01a77f0>]
(really_probe+0xdc/0x254)
[<c01a77f0>] (really_probe+0xdc/0x254) from [<c01a79f0>]
(driver_probe_device+0x88/0xb0)
[<c01a79f0>] (driver_probe_device+0x88/0xb0) from [<c01a7a78>]
(__driver_attach+0x60/0x84)
[<c01a7a78>] (__driver_attach+0x60/0x84) from [<c01a5f14>]
(bus_for_each_dev+0x44/0x74)
[<c01a5f14>] (bus_for_each_dev+0x44/0x74) from [<c01a671c>]
(bus_add_driver+0xc0/0x1bc)
[<c01a671c>] (bus_add_driver+0xc0/0x1bc) from [<c01a7ef0>]
(driver_register+0xa0/0xd4)
[<c01a7ef0>] (driver_register+0xa0/0xd4) from [<c00086fc>]
(do_one_initcall+0x34/0xf8)
[<c00086fc>] (do_one_initcall+0x34/0xf8) from [<c03c62e0>]
(do_initcall_level+0x60/0x98)
[<c03c62e0>] (do_initcall_level+0x60/0x98) from [<c03c632c>]
(do_initcalls+0x14/0x20)
[<c03c632c>] (do_initcalls+0x14/0x20) from [<c03c6430>] (kernel_init+0x4c/0xe0)
[<c03c6430>] (kernel_init+0x4c/0xe0) from [<c000f044>]
(kernel_thread_exit+0x0/0x8)
---[ end trace a05bda6605792137 ]---
omap_hsmmc omap_hsmmc.0: could not set regulator OCR (-22)
TCP: cubic registered
NET: Registered protocol family 17
NET: Registered protocol family 15
Registering the dns_resolver key type
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
omap_vc_init_channel: No PMIC info for vdd_core
omap_vp_init: No PMIC info for vdd_core
omap_vc_init_channel: No PMIC info for vdd_mpu_iva
omap_vp_init: No PMIC info for vdd_mpu_iva
omap_vc_pre_scale: Insufficient pmic info to scale the vdd_mpu_iva
omap_vc_pre_scale: Insufficient pmic info to scale the vdd_core
clock: disabling unused clocks to save power
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 80000005 [#1] PREEMPT ARM
Modules linked in:
CPU: 0 Tainted: G W (3.4.3 #2)
PC is at 0x0
LR is at omap34xx_do_sram_idle+0x8/0x10
pc : [<00000000>] lr : [<c001d2bc>] psr: 600000d3
sp : c03f1f74 ip : cf463a90 fp : 00000000
r10: 00000000 r9 : 413fc082 r8 : 80004059
r7 : 00000001 r6 : 00000000 r5 : 00000000 r4 : c042c20c
r3 : 00003430 r2 : 00000010 r1 : c03fc108 r0 : 00000000
Flags: nZCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment kernel
Control: 10c5387d Table: 80004019 DAC: 00000015
Process swapper (pid: 0, stack limit = 0xc03f02e8)
Stack: (0xc03f1f74 to 0xc03f2000)
1f60: 00000001 00000000 00000000
1f80: 00000001 80004059 413fc082 00000000 00000000 c001d2bc 00000001 c001d434
1fa0: c03f0000 c042b780 c03e6560 c03faff4 80004059 c001d568 c03f0000 c000f154
1fc0: c03f0000 c000f6ac c03f8134 c03c68b4 ffffffff ffffffff c03c6574 00000000
1fe0: 00000000 c03e6564 00000000 10c53c7d c03f808c 8000803c 00000000 00000000
[<c001d2bc>] (omap34xx_do_sram_idle+0x8/0x10) from [<00000000>] ( (null))
Code: bad PC value
---[ end trace a05bda6605792139 ]---
Kernel panic - not syncing: Attempted to kill the idle task!
--
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