On Monday 04 April 2011 07:53 PM, Ming Lei wrote:
Hi,
2011/4/4 Avik Sil<aviksil@xxxxxxxxxxxxxxxxxx>:
Hi Ming,
On Saturday 02 April 2011 10:57 AM, Ming Lei wrote:
Hi Avik,
2011/4/1 Avik Sil<aviksil@xxxxxxxxxxxxxxxxxx>:
Hi,
I've applied the patches in
http://lists.infradead.org/pipermail/linux-arm-kernel/2011-March/045283.html
on top of a linaro kernel which resulted in booting problem on
Pandaboard.
It hangs inside the cti_unlock() while reading the LOCKSTATUS value,
which
happens when omap_init_pmu() is called. Please help me debug the issue.
Please check if l3 clocks are enabled to drive CTI, such as done in
below:
omap_writel(1, CM_L3INSTR_L3_3_CLKCTRL);
omap_writel(1, CM_L3INSTR_L3_INSTR_CLKCTRL);
omap_writel(2, CM_EMU_CLKSTCTRL);
while ((omap_readl(CM_EMU_CLKSTCTRL)& 0x300) != 0x300);
Can you please tell me where should I insert the above code to enable l3
clocks to drive CTI?
It should be inserted before calling omap4_configure_pmu_irq.
After inserting the above code, I got build error saying undeclared
identifiers. After searching, I found the above identifiers are defined
with 'OMAP4430_' prefix in arch/arm/mach-omap2/cm2_44xx.h
(OMAP4430_CM_L3INSTR_L3_3_CLKCTRL and
OMAP4430_CM_L3INSTR_L3_INSTR_CLKCTRL) and arch/arm/mach-omap2/prm44xx.h
(OMAP4430_CM_EMU_CLKSTCTRL):
#define OMAP4430_CM_L3INSTR_L3_3_CLKCTRL
OMAP44XX_CM2_REGADDR(OMAP4430_CM2_CORE_INST, 0x0720)
[...]
Should I use those identifier instead?
I gave a try with those identifiers and it built the image successfully
although with some warnings - "passing argument 2 of 'omap_writel' makes
integer from pointer without a cast". And the kernel ended up with oops:
[ 1.082122] Unable to handle kernel paging request at virtual address
ae008e20
[ 1.089630] pgd = c0004000
[ 1.092498] [ae008e20] *pgd=00000000
[ 1.096252] Internal error: Oops: 805 [#1] SMP
[ 1.100891] last sysfs file:
[ 1.104034] Modules linked in:
[ 1.107269] CPU: 0 Not tainted (2.6.38.2+ #13)
[ 1.112274] PC is at omap_writel+0x4/0xc
[ 1.116394] LR is at omap2_init_devices+0x108/0x42c
[ 1.121490] pc : [<c006f174>] lr : [<c0011274>] psr: 60000013
[ 1.121490] sp : da845f98 ip : 271beb3a fp : 00000000
[ 1.133453] r10: 00000000 r9 : 00000000 r8 : c001116c
[ 1.138916] r7 : 00000000 r6 : c0789738 r5 : 00000002 r4 : c078acd0
[ 1.145690] r3 : da848000 r2 : 271beb3a r1 : ae008e20 r0 : 00000001
[ 1.152496] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM
Segment kernel
[ 1.160064] Control: 10c53c7f Table: 8000404a DAC: 00000015
[ 1.166046] Process swapper (pid: 1, stack limit = 0xda8442f8)
[ 1.172119] Stack: (0xda845f98 to 0xda846000)
[ 1.176696] 5f80:
c07ed3a0 c003b82c
[ 1.185180] 5fa0: c0789738 c00535a4 00000000 271beb3a c07bddf4
0000019a c0789738 c07843d4
[ 1.193664] 5fc0: c003b2bc c003b82c c0789738 c07843d4 00000004
00000000 00000000 c000874c
[ 1.202148] 5fe0: 00000000 c0008588 c00600b0 00000013 00000000
c00600b0 38c64703 060aa000
[ 1.210632] [<c006f174>] (omap_writel+0x4/0xc) from [<c0011274>]
(omap2_init_devices+0x108/0x42c)
[ 1.219848] [<c0011274>] (omap2_init_devices+0x108/0x42c) from
[<c00535a4>] (do_one_initcall+0x34/0x18c)
[ 1.229675] [<c00535a4>] (do_one_initcall+0x34/0x18c) from
[<c000874c>] (kernel_init+0x1c4/0x250)
[ 1.238891] [<c000874c>] (kernel_init+0x1c4/0x250) from [<c00600b0>]
(kernel_thread_exit+0x0/0x8)
[ 1.248107] Code: e28114b2 e1c100b0 e12fff1e e28114b2 (e5810000)
[ 1.254455] ---[ end trace da227214a82491b7 ]---
[ 1.259338] Kernel panic - not syncing: Attempted to kill init!
[ 1.265533] [<c00673ac>] (unwind_backtrace+0x0/0xfc) from
[<c057d2f0>] (panic+0xb8/0x1dc)
[ 1.274047] [<c057d2f0>] (panic+0xb8/0x1dc) from [<c00a75fc>]
(do_exit+0x6e4/0x74c)
[ 1.282012] [<c00a75fc>] (do_exit+0x6e4/0x74c) from [<c0063458>]
(die+0x1e0/0x1f8)
[ 1.289916] [<c0063458>] (die+0x1e0/0x1f8) from [<c006b884>]
(__do_kernel_fault+0x74/0x84)
[ 1.298492] [<c006b884>] (__do_kernel_fault+0x74/0x84) from
[<c05831c8>] (do_page_fault+0xa8/0x338)
[ 1.307891] [<c05831c8>] (do_page_fault+0xa8/0x338) from [<c00534e0>]
(do_DataAbort+0x38/0x98)
[ 1.316833] [<c00534e0>] (do_DataAbort+0x38/0x98) from [<c05811ec>]
(__dabt_svc+0x4c/0x60)
[ 1.325408] Exception stack(0xda845f50 to 0xda845f98)
[ 1.330718] 5f40: 00000001
ae008e20 271beb3a da848000
[ 1.339202] 5f60: c078acd0 00000002 c0789738 00000000 c001116c
00000000 00000000 00000000
[ 1.347686] 5f80: 271beb3a da845f98 c0011274 c006f174 60000013 ffffffff
[ 1.354583] [<c05811ec>] (__dabt_svc+0x4c/0x60) from [<c006f174>]
(omap_writel+0x4/0xc)
[ 1.362915] [<c006f174>] (omap_writel+0x4/0xc) from [<c0011274>]
(omap2_init_devices+0x108/0x42c)
[ 1.372131] [<c0011274>] (omap2_init_devices+0x108/0x42c) from
[<c00535a4>] (do_one_initcall+0x34/0x18c)
[ 1.381958] [<c00535a4>] (do_one_initcall+0x34/0x18c) from
[<c000874c>] (kernel_init+0x1c4/0x250)
[ 1.391174] [<c000874c>] (kernel_init+0x1c4/0x250) from [<c00600b0>]
(kernel_thread_exit+0x0/0x8)
[ 1.400390] CPU1: stopping
[ 1.403259] [<c00673ac>] (unwind_backtrace+0x0/0xfc) from
[<c0053384>] (do_IPI+0x108/0x118)
[ 1.411926] [<c0053384>] (do_IPI+0x108/0x118) from [<c058123c>]
(__irq_svc+0x3c/0x120)
[ 1.420166] Exception stack(0xda86bf90 to 0xda86bfd8)
[ 1.425445] bf80: c07cb574
00000000 da86a000 00000000
[ 1.433929] bfa0: da86a000 c07ed464 c058ae04 c0789dc4 c078a004
411fc092 00000000 00000000
[ 1.442413] bfc0: 00000000 da86bfd8 c0060154 c0060158 60000113 ffffffff
[ 1.449279] [<c058123c>] (__irq_svc+0x3c/0x120) from [<c0060158>]
(default_idle+0x28/0x2c)
[ 1.457855] [<c0060158>] (default_idle+0x28/0x2c) from [<c00609fc>]
(cpu_idle+0xc8/0xfc)
[ 1.466278] [<c00609fc>] (cpu_idle+0xc8/0xfc) from [<8057990c>]
(0x8057990c)
Are there other definitions for the identifiers you have used?
Regards,
Avik
thanks,
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