linux.git/arch/arm/Kconfig.debug, branch v3.16.81 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git ARM: pxa: fix hang on startup with DEBUG_LL 2014-12-01T13:47:10+00:00 Robert Jarzmik robert.jarzmik@free.fr 2014-10-07T19:18:14+00:00 c6f4b45b9f647fae9a8604a6a867770831e011fb commit cde7fc879969f933614b1256df2625d6ff637bab upstream. The commit 2111667b4677 ("ARM: pxa: call debug_ll_io_init for earlyprintk") triggers in the current kernel the attached backtrace on PXA/tosa early in the boot time when DEBUG_LL is enabled. It is due to overlap between uart virtual memory defined in DEBUG_UART_VIRT and mapped by debug_ll_io_init() and peripheral bus mapped by pxa_map_io at the same address, 0xf2100000. As hinted by Arnd, map early virtual memory for low level debug on address 0xf6200000, even if that means 2 virtual mappings will give access to the pxa internal UARTs (FFUART, BTUART, STUART, ...). ------------[ cut here ]------------ kernel BUG at /home/lumag/linux/mm/vmalloc.c:1143! Internal error: Oops - BUG: 0 [#1] PREEMPT ARM Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-00032-g8e0d202-dirty #23 task: c062a5a8 ti: c0620000 task.ti: c0620000 PC is at vm_area_add_early+0x54/0x84 LR is at add_static_vm_early+0xc/0x60 pc : [<c03e1100>] lr : [<c03d9ef4>] psr: 800001d3 sp : c0621f04 ip : c03efa74 fp : c03edf84 r10: c0637e98 r9 : 40000001 r8 : c03da57c r7 : c3ffcfb0 r6 : 00000000 r5 : c3ffcfb0 r4 : 02000000 r3 : c3ffcfd8 r2 : f2100000 r1 : f4000000 r0 : c3ffcfb0 Flags: Nzcv IRQs off FIQs off Mode SVC_32 ISA ARM Segment kernel Control: 00007977 Table: a0004000 DAC: 00000017 Process swapper (pid: 0, stack limit = 0xc06201c8) Stack: (0xc0621f04 to 0xc0622000) 1f00: c3ffcfd8 40000001 c3ffcfd8 c03ee08c c03da570 c03db90c c0637d24 1f20: 00000000 c03ec7cc c066e654 a0700000 000a0700 c03db914 c03db90c c03daf84 1f40: 00000000 000a0000 c0000000 c03ec7cc 000a0700 c0700000 ffff1000 000a3fff 1f60: 00001000 00000007 00000000 c03ec7cc c0008000 c03ed748 c0621fd4 c03d5d18 1f80: 69052d00 a03ec48c 00000000 c03d8ad0 0000006c 00007977 c036c6e8 00000001 1fa0: c0621fd4 c03ed744 c0628000 a0004000 69052d00 a03ec48c 00000000 c03d68d4 1fc0: 00000000 00000000 00000000 00000000 00000000 c03ed748 c0649894 c062801c 1fe0: c03ed744 c062b2f0 a0004000 69052d00 a03ec48c a0008040 00000000 00000000 [<c03e1100>] (vm_area_add_early) from [<c03d9ef4>] (add_static_vm_early+0xc/0x60) [<c03d9ef4>] (add_static_vm_early) from [<c03da570>] (iotable_init.part.6+0xa8/0xb4) [<c03da570>] (iotable_init.part.6) from [<c03db914>] (pxa25x_map_io+0x8/0x24) [<c03db914>] (pxa25x_map_io) from [<c03daf84>] (paging_init+0x744/0x8d8) [<c03daf84>] (paging_init) from [<c03d8ad0>] (setup_arch+0x354/0x608) [<c03d8ad0>] (setup_arch) from [<c03d68d4>] (start_kernel+0xa8/0x3dc) [<c03d68d4>] (start_kernel) from [<a0008040>] (0xa0008040) Code: e5904008 e0811004 e1520001 2a000005 (e7f001f2) ---[ end trace f24b6c88ae00fa9a ]--- Kernel panic - not syncing: Attempted to kill the idle task! ---[ end Kernel panic - not syncing: Attempted to kill the idle task! Reported-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Arnd Bergmann <arnd@arndb.de> [ luis: backported to 3.16: adjusted context ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> 
commit cde7fc879969f933614b1256df2625d6ff637bab upstream.

The commit 2111667b4677 ("ARM: pxa: call debug_ll_io_init for
earlyprintk") triggers in the current kernel the attached backtrace on
PXA/tosa early in the boot time when DEBUG_LL is enabled.

It is due to overlap between uart virtual memory defined in
DEBUG_UART_VIRT and mapped by debug_ll_io_init() and peripheral bus
mapped by pxa_map_io at the same address, 0xf2100000.

As hinted by Arnd, map early virtual memory for low level debug on
address 0xf6200000, even if that means 2 virtual mappings will give
access to the pxa internal UARTs (FFUART, BTUART, STUART, ...).

------------[ cut here ]------------
kernel BUG at /home/lumag/linux/mm/vmalloc.c:1143!
Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-00032-g8e0d202-dirty #23
task: c062a5a8 ti: c0620000 task.ti: c0620000
PC is at vm_area_add_early+0x54/0x84
LR is at add_static_vm_early+0xc/0x60
pc : [<c03e1100>]    lr : [<c03d9ef4>]    psr: 800001d3
sp : c0621f04  ip : c03efa74  fp : c03edf84
r10: c0637e98  r9 : 40000001  r8 : c03da57c
r7 : c3ffcfb0  r6 : 00000000  r5 : c3ffcfb0  r4 : 02000000
r3 : c3ffcfd8  r2 : f2100000  r1 : f4000000  r0 : c3ffcfb0
Flags: Nzcv  IRQs off  FIQs off  Mode SVC_32  ISA ARM  Segment kernel
Control: 00007977  Table: a0004000  DAC: 00000017
Process swapper (pid: 0, stack limit = 0xc06201c8)
Stack: (0xc0621f04 to 0xc0622000)
1f00:          c3ffcfd8 40000001 c3ffcfd8 c03ee08c c03da570 c03db90c c0637d24
1f20: 00000000 c03ec7cc c066e654 a0700000 000a0700 c03db914 c03db90c c03daf84
1f40: 00000000 000a0000 c0000000 c03ec7cc 000a0700 c0700000 ffff1000 000a3fff
1f60: 00001000 00000007 00000000 c03ec7cc c0008000 c03ed748 c0621fd4 c03d5d18
1f80: 69052d00 a03ec48c 00000000 c03d8ad0 0000006c 00007977 c036c6e8 00000001
1fa0: c0621fd4 c03ed744 c0628000 a0004000 69052d00 a03ec48c 00000000 c03d68d4
1fc0: 00000000 00000000 00000000 00000000 00000000 c03ed748 c0649894 c062801c
1fe0: c03ed744 c062b2f0 a0004000 69052d00 a03ec48c a0008040 00000000 00000000
[<c03e1100>] (vm_area_add_early) from [<c03d9ef4>] (add_static_vm_early+0xc/0x60)
[<c03d9ef4>] (add_static_vm_early) from [<c03da570>] (iotable_init.part.6+0xa8/0xb4)
[<c03da570>] (iotable_init.part.6) from [<c03db914>] (pxa25x_map_io+0x8/0x24)
[<c03db914>] (pxa25x_map_io) from [<c03daf84>] (paging_init+0x744/0x8d8)
[<c03daf84>] (paging_init) from [<c03d8ad0>] (setup_arch+0x354/0x608)
[<c03d8ad0>] (setup_arch) from [<c03d68d4>] (start_kernel+0xa8/0x3dc)
[<c03d68d4>] (start_kernel) from [<a0008040>] (0xa0008040)
Code: e5904008 e0811004 e1520001 2a000005 (e7f001f2)
---[ end trace f24b6c88ae00fa9a ]---
Kernel panic - not syncing: Attempted to kill the idle task!
---[ end Kernel panic - not syncing: Attempted to kill the idle task!

Reported-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Merge tag 'samsung-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc 2014-05-31T04:44:49+00:00 Olof Johansson olof@lixom.net 2014-05-31T04:44:32+00:00 fe388fac0f18010688032393d042807261791eaf Samsung Exynos updates for 3.16 - add new SoCs support : exynos3250, 5260, 5410 and 5800 - enable multi-platform on exynos : consolidate exynos related Kconfig entries * tag 'samsung-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (22 commits) ARM: EXYNOS: Enable multi-platform build support ARM: EXYNOS: Consolidate Kconfig entries ARM: EXYNOS: Add support for EXYNOS5410 SoC ARM: EXYNOS: Support secondary CPU boot of Exynos3250 ARM: EXYNOS: Add Exynos3250 SoC ID ARM: EXYNOS: Add 5800 SoC support ARM: EXYNOS: initial board support for exynos5260 SoC cpufreq: exynos: Fix the compile error ARM: S3C24XX: move debug-macro.S into the common space ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro ARM: S3C24XX: trim down debug uart handling ARM: compressed/head.S: remove s3c24xx special case ARM: EXYNOS: Remove unnecessary inclusion of cpu.h ARM: EXYNOS: Migrate Exynos specific macros from plat to mach ARM: EXYNOS: Remove exynos_subsys registration ARM: EXYNOS: Remove duplicate lines in Makefile ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling ARM: dts: Remove g2d_pd node for exynos5420 ARM: dts: Remove mau_pd node for exynos5420 ARM: exynos_defconfig: enable HS-I2C to fix for mmc partition mount ... Signed-off-by: Olof Johansson <olof@lixom.net> 
Samsung Exynos updates for 3.16

- add new SoCs support
  : exynos3250, 5260, 5410 and 5800

- enable multi-platform on exynos
  : consolidate exynos related Kconfig entries

* tag 'samsung-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (22 commits)
  ARM: EXYNOS: Enable multi-platform build support
  ARM: EXYNOS: Consolidate Kconfig entries
  ARM: EXYNOS: Add support for EXYNOS5410 SoC
  ARM: EXYNOS: Support secondary CPU boot of Exynos3250
  ARM: EXYNOS: Add Exynos3250 SoC ID
  ARM: EXYNOS: Add 5800 SoC support
  ARM: EXYNOS: initial board support for exynos5260 SoC
  cpufreq: exynos: Fix the compile error
  ARM: S3C24XX: move debug-macro.S into the common space
  ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro
  ARM: S3C24XX: trim down debug uart handling
  ARM: compressed/head.S: remove s3c24xx special case
  ARM: EXYNOS: Remove unnecessary inclusion of cpu.h
  ARM: EXYNOS: Migrate Exynos specific macros from plat to mach
  ARM: EXYNOS: Remove exynos_subsys registration
  ARM: EXYNOS: Remove duplicate lines in Makefile
  ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling
  ARM: dts: Remove g2d_pd node for exynos5420
  ARM: dts: Remove mau_pd node for exynos5420
  ARM: exynos_defconfig: enable HS-I2C to fix for mmc partition mount
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
Merge tag 'qcom-soc-for-3.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom into next/soc 2014-05-31T03:34:23+00:00 Olof Johansson olof@lixom.net 2014-05-31T03:34:23+00:00 b4c48e8780325e1f2ba79ccc0fb2a6c99c7cfac2 Merge "Qualcomm ARM Based SoC Updates for v3.16-2" from Kumar Gala: * Updated Kconfig DEBUG_QCOM_UARTDM help to include APQ8084 info * tag 'qcom-soc-for-3.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom: ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084 Signed-off-by: Olof Johansson <olof@lixom.net> 
Merge "Qualcomm ARM Based SoC Updates for v3.16-2" from Kumar Gala:

* Updated Kconfig DEBUG_QCOM_UARTDM help to include APQ8084 info

* tag 'qcom-soc-for-3.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom:
  ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084

Signed-off-by: Olof Johansson <olof@lixom.net>
ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084 2014-05-29T16:14:28+00:00 Georgi Djakov gdjakov@mm-sol.com 2014-05-23T15:12:32+00:00 2f528dd3b30c4351c0ece73b8bdc39753c02003b Add information about the APQ8084 debug UART physical and virtual addresses in the DEBUG_QCOM_UARTDM Kconfig help section. Signed-off-by: Georgi Djakov <gdjakov@mm-sol.com> Signed-off-by: Kumar Gala <galak@codeaurora.org> 
Add information about the APQ8084 debug UART physical and virtual
addresses in the DEBUG_QCOM_UARTDM Kconfig help section.

Signed-off-by: Georgi Djakov <gdjakov@mm-sol.com>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
ARM: S3C24XX: move debug-macro.S into the common space 2014-05-25T19:05:00+00:00 Heiko Stuebner heiko@sntech.de 2014-05-15T21:59:18+00:00 2cd62bd4e5226ae5fa61f58ade8148f2e4643335 Move debug-macro.S from mach/include to include/debug where all other common debug macros are. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> 
Move debug-macro.S from mach/include to include/debug where
all other common debug macros are.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro 2014-05-25T19:05:00+00:00 Heiko Stuebner heiko@sntech.de 2014-05-15T21:59:18+00:00 1899de2894970fbeece3a97dd69d5321fb00972b This removes the need for mach/-headers in the debug macro. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> 
This removes the need for mach/-headers in the debug macro.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: S3C24XX: trim down debug uart handling 2014-05-25T19:05:00+00:00 Heiko Stuebner heiko@sntech.de 2014-05-15T21:59:18+00:00 daf67dfc5989495c887cfdbe76be72b7db724e60 Using the lowlevel debug uart is a corner case - even more so in a multiplatform environment. So it seems reasonable to simply let the developer set the appropriate uart type for the debugged SoC. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> 
Using the lowlevel debug uart is a corner case - even more so in a
multiplatform environment. So it seems reasonable to simply let the
developer set the appropriate uart type for the debugged SoC.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Merge tag 'qcom-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom into next/soc 2014-05-23T19:56:57+00:00 Arnd Bergmann arnd@arndb.de 2014-05-23T19:32:29+00:00 8ad0bbd8696904c34a1fb266a25efe2be818c0c7 Merge "Qualcomm ARM Based SoC Updates for v3.16" from Kumar Gala: * Enabling building pinctrl and AMBA bus support * Clean up debug UART selection * tag 'qcom-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom: ARM: qcom: Select PINCTRL by default for ARCH_QCOM ARM: debug: qcom: make UART address selection configuration option ARM: qcom: Enable ARM_AMBA option for Qualcomm SOCs. Conflicts: arch/arm/Kconfig.debug arch/arm/mach-qcom/Kconfig Signed-off-by: Arnd Bergmann <arnd@arndb.de> 
Merge "Qualcomm ARM Based SoC Updates for v3.16" from Kumar Gala:

* Enabling building pinctrl and AMBA bus support
* Clean up debug UART selection

* tag 'qcom-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom:
  ARM: qcom: Select PINCTRL by default for ARCH_QCOM
  ARM: debug: qcom: make UART address selection configuration option
  ARM: qcom: Enable ARM_AMBA option for Qualcomm SOCs.

Conflicts:
	arch/arm/Kconfig.debug
	arch/arm/mach-qcom/Kconfig

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ARM: debug: qcom: make UART address selection configuration option 2014-05-22T16:50:15+00:00 Ivan T. Ivanov iivanov@mm-sol.com 2014-04-14T13:47:34+00:00 7098cff2a3f4db5f844607b8a09bd191618c769e Separate Qualcomm low-level debugging UART to two options. DEBUG_MSM_UART is used in earlier non-multi platform arches, like MSM7X00A, QSD8X50 and MSM7X30. DEBUG_QCOM_UARTDM is used in multi-plafrom arches and have embedded data mover. Make DEBUG_UART_PHYS and DEBUG_UART_BASE user adjustable by Kconfig menu. Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Kumar Gala <galak@codeaurora.org> 
Separate Qualcomm low-level debugging UART to two options.

DEBUG_MSM_UART is used in earlier non-multi platform arches,
like MSM7X00A, QSD8X50 and MSM7X30.

DEBUG_QCOM_UARTDM is used in multi-plafrom arches and have
embedded data mover.

Make DEBUG_UART_PHYS and DEBUG_UART_BASE user adjustable by
Kconfig menu.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
ARM: imx: add low-level debug support for imx6sx 2014-05-16T07:35:14+00:00 Shawn Guo shawn.guo@freescale.com 2014-05-11T13:53:48+00:00 74368e81b1198a0c40e150554faf984941b7997c Enable low-level debug support for i.MX6 SoloX by adding the debug port definitions for the SoC. Signed-off-by: Shawn Guo <shawn.guo@freescale.com> 
Enable low-level debug support for i.MX6 SoloX by adding the debug
port definitions for the SoC.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>