cpus: denver: skip DCO enable/disable for recent SKUs
DCO is not supported by the SKUs released after MIDR_PN4. This patch skips enabling or disabling the DCO on these SKUs. Change-Id: Ic31a829de3ae560314d0fb5c5e867689d4ba243b Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
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@ -161,13 +161,19 @@ endfunc denver_disable_ext_debug
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* ----------------------------------------------------
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* ----------------------------------------------------
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*/
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*/
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func denver_enable_dco
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func denver_enable_dco
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/* DCO is not supported on PN5 and later */
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mrs x1, midr_el1
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mov_imm x2, DENVER_MIDR_PN4
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cmp x1, x2
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b.hi 1f
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mov x18, x30
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mov x18, x30
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bl plat_my_core_pos
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bl plat_my_core_pos
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mov x1, #1
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mov x1, #1
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lsl x1, x1, x0
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lsl x1, x1, x0
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msr s3_0_c15_c0_2, x1
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msr s3_0_c15_c0_2, x1
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mov x30, x18
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mov x30, x18
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ret
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1: ret
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endfunc denver_enable_dco
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endfunc denver_enable_dco
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/* ----------------------------------------------------
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/* ----------------------------------------------------
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@ -175,10 +181,14 @@ endfunc denver_enable_dco
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* ----------------------------------------------------
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* ----------------------------------------------------
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*/
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*/
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func denver_disable_dco
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func denver_disable_dco
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/* DCO is not supported on PN5 and later */
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mov x18, x30
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mrs x1, midr_el1
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mov_imm x2, DENVER_MIDR_PN4
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cmp x1, x2
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b.hi 2f
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/* turn off background work */
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/* turn off background work */
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mov x18, x30
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bl plat_my_core_pos
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bl plat_my_core_pos
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mov x1, #1
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mov x1, #1
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lsl x1, x1, x0
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lsl x1, x1, x0
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@ -194,7 +204,7 @@ func denver_disable_dco
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cbnz x2, 1b
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cbnz x2, 1b
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mov x30, x18
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mov x30, x18
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ret
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2: ret
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endfunc denver_disable_dco
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endfunc denver_disable_dco
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func check_errata_cve_2017_5715
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func check_errata_cve_2017_5715
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