arm64/boot: Disable trapping of PMZR_EL0 writes to EL2grafted

__init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2.
PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in
HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host
traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The
kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU
driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a
write from EL0 reaches the trap and takes the host down without a panic
message.

Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already
does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9
bits.

Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9")
Cc: stable@vger.kernel.org
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>

1 files changed, 140 insertions, 0 deletions

diff --git a/include/dt-bindings/clock/am4.h b/include/dt-bindings/clock/am4.h
new file mode 100644
index 000000000..a65b082e9
--- /dev/null
+++ b/include/dt-bindings/clock/am4.h
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2017 Texas Instruments, Inc.
+ */
+#ifndef __DT_BINDINGS_CLK_AM4_H
+#define __DT_BINDINGS_CLK_AM4_H
+
+#define AM4_CLKCTRL_OFFSET	0x20
+#define AM4_CLKCTRL_INDEX(offset)	((offset) - AM4_CLKCTRL_OFFSET)
+
+/* l3s_tsc clocks */
+#define AM4_L3S_TSC_CLKCTRL_OFFSET	0x120
+#define AM4_L3S_TSC_CLKCTRL_INDEX(offset)	((offset) - AM4_L3S_TSC_CLKCTRL_OFFSET)
+#define AM4_L3S_TSC_ADC_TSC_CLKCTRL	AM4_L3S_TSC_CLKCTRL_INDEX(0x120)
+
+/* l4_wkup_aon clocks */
+#define AM4_L4_WKUP_AON_CLKCTRL_OFFSET	0x228
+#define AM4_L4_WKUP_AON_CLKCTRL_INDEX(offset)	((offset) - AM4_L4_WKUP_AON_CLKCTRL_OFFSET)
+#define AM4_L4_WKUP_AON_WKUP_M3_CLKCTRL	AM4_L4_WKUP_AON_CLKCTRL_INDEX(0x228)
+#define AM4_L4_WKUP_AON_COUNTER_32K_CLKCTRL	AM4_L4_WKUP_AON_CLKCTRL_INDEX(0x230)
+
+/* l4_wkup clocks */
+#define AM4_L4_WKUP_CLKCTRL_OFFSET	0x220
+#define AM4_L4_WKUP_CLKCTRL_INDEX(offset)	((offset) - AM4_L4_WKUP_CLKCTRL_OFFSET)
+#define AM4_L4_WKUP_L4_WKUP_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x220)
+#define AM4_L4_WKUP_TIMER1_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x328)
+#define AM4_L4_WKUP_WD_TIMER2_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x338)
+#define AM4_L4_WKUP_I2C1_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x340)
+#define AM4_L4_WKUP_UART1_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x348)
+#define AM4_L4_WKUP_SMARTREFLEX0_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x350)
+#define AM4_L4_WKUP_SMARTREFLEX1_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x358)
+#define AM4_L4_WKUP_CONTROL_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x360)
+#define AM4_L4_WKUP_GPIO1_CLKCTRL	AM4_L4_WKUP_CLKCTRL_INDEX(0x368)
+
+/* mpu clocks */
+#define AM4_MPU_MPU_CLKCTRL	AM4_CLKCTRL_INDEX(0x20)
+
+/* gfx_l3 clocks */
+#define AM4_GFX_L3_GFX_CLKCTRL	AM4_CLKCTRL_INDEX(0x20)
+
+/* l4_rtc clocks */
+#define AM4_L4_RTC_RTC_CLKCTRL	AM4_CLKCTRL_INDEX(0x20)
+
+/* l3 clocks */
+#define AM4_L3_L3_MAIN_CLKCTRL	AM4_CLKCTRL_INDEX(0x20)
+#define AM4_L3_AES_CLKCTRL	AM4_CLKCTRL_INDEX(0x28)
+#define AM4_L3_DES_CLKCTRL	AM4_CLKCTRL_INDEX(0x30)
+#define AM4_L3_L3_INSTR_CLKCTRL	AM4_CLKCTRL_INDEX(0x40)
+#define AM4_L3_OCMCRAM_CLKCTRL	AM4_CLKCTRL_INDEX(0x50)
+#define AM4_L3_SHAM_CLKCTRL	AM4_CLKCTRL_INDEX(0x58)
+#define AM4_L3_TPCC_CLKCTRL	AM4_CLKCTRL_INDEX(0x78)
+#define AM4_L3_TPTC0_CLKCTRL	AM4_CLKCTRL_INDEX(0x80)
+#define AM4_L3_TPTC1_CLKCTRL	AM4_CLKCTRL_INDEX(0x88)
+#define AM4_L3_TPTC2_CLKCTRL	AM4_CLKCTRL_INDEX(0x90)
+#define AM4_L3_L4_HS_CLKCTRL	AM4_CLKCTRL_INDEX(0xa0)
+
+/* l3s clocks */
+#define AM4_L3S_CLKCTRL_OFFSET	0x68
+#define AM4_L3S_CLKCTRL_INDEX(offset)	((offset) - AM4_L3S_CLKCTRL_OFFSET)
+#define AM4_L3S_VPFE0_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x68)
+#define AM4_L3S_VPFE1_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x70)
+#define AM4_L3S_GPMC_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x220)
+#define AM4_L3S_ADC1_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x230)
+#define AM4_L3S_MCASP0_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x238)
+#define AM4_L3S_MCASP1_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x240)
+#define AM4_L3S_MMC3_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x248)
+#define AM4_L3S_QSPI_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x258)
+#define AM4_L3S_USB_OTG_SS0_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x260)
+#define AM4_L3S_USB_OTG_SS1_CLKCTRL	AM4_L3S_CLKCTRL_INDEX(0x268)
+
+/* pruss_ocp clocks */
+#define AM4_PRUSS_OCP_CLKCTRL_OFFSET	0x320
+#define AM4_PRUSS_OCP_CLKCTRL_INDEX(offset)	((offset) - AM4_PRUSS_OCP_CLKCTRL_OFFSET)
+#define AM4_PRUSS_OCP_PRUSS_CLKCTRL	AM4_PRUSS_OCP_CLKCTRL_INDEX(0x320)
+
+/* l4ls clocks */
+#define AM4_L4LS_CLKCTRL_OFFSET	0x420
+#define AM4_L4LS_CLKCTRL_INDEX(offset)	((offset) - AM4_L4LS_CLKCTRL_OFFSET)
+#define AM4_L4LS_L4_LS_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x420)
+#define AM4_L4LS_D_CAN0_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x428)
+#define AM4_L4LS_D_CAN1_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x430)
+#define AM4_L4LS_EPWMSS0_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x438)
+#define AM4_L4LS_EPWMSS1_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x440)
+#define AM4_L4LS_EPWMSS2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x448)
+#define AM4_L4LS_EPWMSS3_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x450)
+#define AM4_L4LS_EPWMSS4_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x458)
+#define AM4_L4LS_EPWMSS5_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x460)
+#define AM4_L4LS_ELM_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x468)
+#define AM4_L4LS_GPIO2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x478)
+#define AM4_L4LS_GPIO3_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x480)
+#define AM4_L4LS_GPIO4_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x488)
+#define AM4_L4LS_GPIO5_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x490)
+#define AM4_L4LS_GPIO6_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x498)
+#define AM4_L4LS_HDQ1W_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4a0)
+#define AM4_L4LS_I2C2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4a8)
+#define AM4_L4LS_I2C3_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4b0)
+#define AM4_L4LS_MAILBOX_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4b8)
+#define AM4_L4LS_MMC1_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4c0)
+#define AM4_L4LS_MMC2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4c8)
+#define AM4_L4LS_RNG_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x4e0)
+#define AM4_L4LS_SPI0_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x500)
+#define AM4_L4LS_SPI1_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x508)
+#define AM4_L4LS_SPI2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x510)
+#define AM4_L4LS_SPI3_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x518)
+#define AM4_L4LS_SPI4_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x520)
+#define AM4_L4LS_SPINLOCK_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x528)
+#define AM4_L4LS_TIMER2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x530)
+#define AM4_L4LS_TIMER3_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x538)
+#define AM4_L4LS_TIMER4_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x540)
+#define AM4_L4LS_TIMER5_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x548)
+#define AM4_L4LS_TIMER6_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x550)
+#define AM4_L4LS_TIMER7_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x558)
+#define AM4_L4LS_TIMER8_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x560)
+#define AM4_L4LS_TIMER9_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x568)
+#define AM4_L4LS_TIMER10_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x570)
+#define AM4_L4LS_TIMER11_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x578)
+#define AM4_L4LS_UART2_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x580)
+#define AM4_L4LS_UART3_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x588)
+#define AM4_L4LS_UART4_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x590)
+#define AM4_L4LS_UART5_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x598)
+#define AM4_L4LS_UART6_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x5a0)
+#define AM4_L4LS_OCP2SCP0_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x5b8)
+#define AM4_L4LS_OCP2SCP1_CLKCTRL	AM4_L4LS_CLKCTRL_INDEX(0x5c0)
+
+/* emif clocks */
+#define AM4_EMIF_CLKCTRL_OFFSET	0x720
+#define AM4_EMIF_CLKCTRL_INDEX(offset)	((offset) - AM4_EMIF_CLKCTRL_OFFSET)
+#define AM4_EMIF_EMIF_CLKCTRL	AM4_EMIF_CLKCTRL_INDEX(0x720)
+
+/* dss clocks */
+#define AM4_DSS_CLKCTRL_OFFSET	0xa20
+#define AM4_DSS_CLKCTRL_INDEX(offset)	((offset) - AM4_DSS_CLKCTRL_OFFSET)
+#define AM4_DSS_DSS_CORE_CLKCTRL	AM4_DSS_CLKCTRL_INDEX(0xa20)
+
+/* cpsw_125mhz clocks */
+#define AM4_CPSW_125MHZ_CLKCTRL_OFFSET	0xb20
+#define AM4_CPSW_125MHZ_CLKCTRL_INDEX(offset)	((offset) - AM4_CPSW_125MHZ_CLKCTRL_OFFSET)
+#define AM4_CPSW_125MHZ_CPGMAC0_CLKCTRL	AM4_CPSW_125MHZ_CLKCTRL_INDEX(0xb20)
+
+#endif