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feat(tc): enable MCN non-secure access to pmu counters on TC4

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MCN PMU counters are by default non-accesible from non-secure world,
so enable the non-secure access to those PMU counters so that linux
perf driver can read them.

Signed-off-by: Jagdish Gediya <jagdish.gediya@arm.com>
Signed-off-by: Icen Zeyada <Icen.Zeyada2@arm.com>
Change-Id: I1cf1f88f97e9062592fd5603a78fd36f15a15f89
This commit is contained in:
Jagdish Gediya 2024-06-19 08:57:47 +00:00 • committed by Icen Zeyada
parent 8f61c20457
commit d1062c472a
1 changed files with 6 additions and 2 deletions
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8
plat/arm/board/tc/tc_bl31_setup.c
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@ -72,7 +72,7 @@ static scmi_channel_plat_info_t tc_scmi_plat_info = {
}; };
#endif #endif
#if TARGET_PLATFORM == 3 #if (TARGET_PLATFORM == 3) || (TARGET_PLATFORM == 4)
static void enable_ns_mcn_pmu(void) static void enable_ns_mcn_pmu(void)
{ {
/* /*
@ -84,7 +84,9 @@ static void enable_ns_mcn_pmu(void)
mmio_setbits_32(mcn_scr, 1 << MCN_SCR_PMU_BIT); mmio_setbits_32(mcn_scr, 1 << MCN_SCR_PMU_BIT);
} }
} }
#endif /* (TARGET_PLATFORM == 3) || (TARGET_PLATFORM == 4) */
#if TARGET_PLATFORM == 3
static void set_mcn_slc_alloc_mode(void) static void set_mcn_slc_alloc_mode(void)
{ {
/* /*
@ -113,8 +115,10 @@ static void set_mcn_slc_alloc_mode(void)
void bl31_platform_setup(void) void bl31_platform_setup(void)
{ {
tc_bl31_common_platform_setup(); tc_bl31_common_platform_setup();
#if TARGET_PLATFORM == 3 #if (TARGET_PLATFORM == 3) || (TARGET_PLATFORM == 4)
enable_ns_mcn_pmu(); enable_ns_mcn_pmu();
#endif /* (TARGET_PLATFORM == 3) || (TARGET_PLATFORM == 4) */
#if TARGET_PLATFORM == 3
set_mcn_slc_alloc_mode(); set_mcn_slc_alloc_mode();
plat_arm_ni_setup(NCI_BASE_ADDR); plat_arm_ni_setup(NCI_BASE_ADDR);
#endif #endif