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Enable DCC and memory dump driver on QLI2.0 #217

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Enable DCC and memory dump driver on QLI2.0 #217

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b7a8700
QCLINUX: qcom-dcc: Add driver support for Data Capture and Compare un…
jiegan0107 Jan 8, 2026
597d867
QCLINUX: add qcom_debug.config for debug features
jiegan0107 Jan 8, 2026
c838d44
QCLINUX: qcom-dcc: add qcom-dcc dev driver
jiegan0107 Jan 8, 2026
3978563
PENDING: memory-dump: add QCOM memory dump driver
jiegan0107 Jan 9, 2026
51f7b57
QCLINUX: mem-dump: add memory dump device driver
jiegan0107 Jan 12, 2026
b57ea14
QCLINUX: memory-dump: add logic for reserving CMA memory
jiegan0107 Feb 2, 2026
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4 changes: 4 additions & 0 deletions arch/arm64/configs/qcom_debug.config
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
CONFIG_QCOM_DCC=m
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@Komal-Bajaj Komal-Bajaj Feb 3, 2026

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can we add these debug configs into kernel/configs/debug.config?

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@jiegan0107 jiegan0107 Feb 3, 2026 •
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as these are overlay drivers, Shiraz has suggested to have separate debug config file for containing the configs.

Message from thread:
Further what Amit was suggesting that these configs shouldn’t be enabled in the default build.
So this branch can carry a arch/arm64/configs/qcom_debug.config fragment that optionally enables these debug features.

CONFIG_QCOM_DCC_DEV=m
CONFIG_QCOM_MEMORY_DUMP_V2=y
CONFIG_QCOM_MEMORY_DUMP_DEV=m
4 changes: 4 additions & 0 deletions arch/arm64/mm/init.c
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Expand Up @@ -48,6 +48,7 @@
#include <asm/tlb.h>
#include <asm/alternative.h>
#include <asm/xen/swiotlb-xen.h>
#include <linux/firmware/qcom/memory_dump.h>

/*
* We need to be able to catch inadvertent references to memstart_addr
Expand Down Expand Up @@ -331,6 +332,9 @@ void __init bootmem_init(void)
* reserved, so do it here.
*/
arch_reserve_crashkernel();
#if defined(CONFIG_QCOM_MEMORY_DUMP_V2)
reserve_memdump_cma();
#endif

memblock_dump_all();
}
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16 changes: 16 additions & 0 deletions drivers/firmware/qcom/Kconfig
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Expand Up @@ -74,4 +74,20 @@ config QCOM_QSEECOM_UEFISECAPP
Select Y here to provide access to EFI variables on the aforementioned
platforms.

config QCOM_MEMORY_DUMP_V2
tristate "QCOM Memory Dump V2 Support"
depends on QCOM_TZMEM
depends on CMA
help
This enables memory dump feature. It allows various client
subsystems to register respective dump regions. At the time
of deadlocks or cpu hangs these dump regions are captured to
give a snapshot of the system at the time of the crash.

config QCOM_MEMORY_DUMP_DEV
tristate "QCOM Memory Dump V2 device stub"
depends on QCOM_MEMORY_DUMP_V2
help
Device stub for memory dump V2 driver.

endmenu
2 changes: 2 additions & 0 deletions drivers/firmware/qcom/Makefile
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Expand Up @@ -8,3 +8,5 @@ qcom-scm-objs += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
obj-$(CONFIG_QCOM_TZMEM) += qcom_tzmem.o
obj-$(CONFIG_QCOM_QSEECOM) += qcom_qseecom.o
obj-$(CONFIG_QCOM_QSEECOM_UEFISECAPP) += qcom_qseecom_uefisecapp.o
obj-$(CONFIG_QCOM_MEMORY_DUMP_V2) += memory_dump_v2.o
obj-$(CONFIG_QCOM_MEMORY_DUMP_DEV) += memory_dump_dev.o
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