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Diffstat (limited to '')
| -rw-r--r-- | plat/nxp/soc-ls1028a/aarch64/ls1028a.S | 1387 |
1 files changed, 1387 insertions, 0 deletions
diff --git a/plat/nxp/soc-ls1028a/aarch64/ls1028a.S b/plat/nxp/soc-ls1028a/aarch64/ls1028a.S new file mode 100644 index 0000000..404c39e --- /dev/null +++ b/plat/nxp/soc-ls1028a/aarch64/ls1028a.S @@ -0,0 +1,1387 @@ +/* + * Copyright 2018-2021 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + */ + + .section .text, "ax" + +#include <asm_macros.S> + +#include <lib/psci/psci.h> +#include <nxp_timer.h> +#include <plat_gic.h> +#include <pmu.h> + +#include <bl31_data.h> +#include <plat_psci.h> +#include <platform_def.h> + + .global soc_init_lowlevel + .global soc_init_percpu + .global _set_platform_security + .global _soc_set_start_addr + + .global _soc_core_release + .global _soc_ck_disabled + .global _soc_core_restart + .global _soc_core_prep_off + .global _soc_core_entr_off + .global _soc_core_exit_off + .global _soc_sys_reset + .global _soc_sys_off + .global _soc_core_prep_stdby + .global _soc_core_entr_stdby + .global _soc_core_exit_stdby + .global _soc_core_prep_pwrdn + .global _soc_core_entr_pwrdn + .global _soc_core_exit_pwrdn + .global _soc_clstr_prep_stdby + .global _soc_clstr_exit_stdby + .global _soc_clstr_prep_pwrdn + .global _soc_clstr_exit_pwrdn + .global _soc_sys_prep_stdby + .global _soc_sys_exit_stdby + .global _soc_sys_prep_pwrdn + .global _soc_sys_pwrdn_wfi + .global _soc_sys_exit_pwrdn + + .equ TZPCDECPROT_0_SET_BASE, 0x02200804 + .equ TZPCDECPROT_1_SET_BASE, 0x02200810 + .equ TZPCDECPROT_2_SET_BASE, 0x0220081C + + .equ TZASC_REGION_ATTRIBUTES_0_0, 0x01100110 + +/* + * This function initialize the soc. + * in: void + * out: void + * uses x0 - x11 + */ +func soc_init_lowlevel + /* + * Called from C, so save the non-volatile regs + * save these as pairs of registers to maintain the + * required 16-byte alignment on the stack + */ + stp x4, x5, [sp, #-16]! + stp x6, x7, [sp, #-16]! + stp x8, x9, [sp, #-16]! + stp x10, x11, [sp, #-16]! + stp x12, x13, [sp, #-16]! + stp x18, x30, [sp, #-16]! + + /* + * Make sure the personality has been established by releasing cores + * that are marked "to-be-disabled" from reset + */ + bl release_disabled /* 0-8 */ + + /* Set SCRATCHRW7 to 0x0 */ + ldr x0, =DCFG_SCRATCHRW7_OFFSET + mov x1, xzr + bl _write_reg_dcfg + + /* Restore the aarch32/64 non-volatile registers */ + ldp x18, x30, [sp], #16 + ldp x12, x13, [sp], #16 + ldp x10, x11, [sp], #16 + ldp x8, x9, [sp], #16 + ldp x6, x7, [sp], #16 + ldp x4, x5, [sp], #16 + ret +endfunc soc_init_lowlevel + +/* + * void soc_init_percpu(void) + * + * This function performs any soc-specific initialization that is needed on + * a per-core basis + * in: none + * out: none + * uses x0 - x3 + */ +func soc_init_percpu + stp x4, x30, [sp, #-16]! + + bl plat_my_core_mask + mov x2, x0 + + /* x2 = core mask */ + + /* see if this core is marked for prefetch disable */ + mov x0, #PREFETCH_DIS_OFFSET + bl _get_global_data /* 0-1 */ + tst x0, x2 + b.eq 1f + bl _disable_ldstr_pfetch_A72 /* 0 */ +1: + mov x0, #NXP_PMU_ADDR + bl enable_timer_base_to_cluster + + ldp x4, x30, [sp], #16 + ret +endfunc soc_init_percpu + +/* + * This function determines if a core is disabled via COREDISABLEDSR + * in: w0 = core_mask_lsb + * out: w0 = 0, core not disabled + * w0 != 0, core disabled + * uses x0, x1 + */ +func _soc_ck_disabled + /* get base addr of dcfg block */ + ldr x1, =NXP_DCFG_ADDR + + /* read COREDISABLEDSR */ + ldr w1, [x1, #DCFG_COREDISABLEDSR_OFFSET] + + /* test core bit */ + and w0, w1, w0 + + ret +endfunc _soc_ck_disabled + +/* + * This function sets the security mechanisms in the SoC to implement the + * Platform Security Policy + */ +func _set_platform_security + mov x3, x30 + +#if (!SUPPRESS_TZC) + /* initialize the tzpc */ + bl init_tzpc +#endif + +#if (!SUPPRESS_SEC) + /* initialize secmon */ + bl initSecMon +#endif + + mov x30, x3 + ret +endfunc _set_platform_security + +/* + * Part of CPU_ON + * + * This function releases a secondary core from reset + * in: x0 = core_mask_lsb + * out: none + * uses: x0 - x3 + */ +_soc_core_release: + mov x3, x30 + + /* + * Write to CORE_HOLD to tell the bootrom that we want this core + * to run + */ + ldr x1, =NXP_SEC_REGFILE_ADDR + str w0, [x1, #CORE_HOLD_OFFSET] + + /* Read-modify-write BRRL to release core */ + mov x1, #NXP_RESET_ADDR + ldr w2, [x1, #BRR_OFFSET] + orr w2, w2, w0 + str w2, [x1, #BRR_OFFSET] + dsb sy + isb + + /* Send event */ + sev + isb + + mov x30, x3 + ret + +/* + * This function writes a 64-bit address to bootlocptrh/l + * in: x0, 64-bit address to write to BOOTLOCPTRL/H + * uses x0, x1, x2 + */ +func _soc_set_start_addr + /* Get the 64-bit base address of the dcfg block */ + ldr x2, =NXP_DCFG_ADDR + + /* Write the 32-bit BOOTLOCPTRL register */ + mov x1, x0 + str w1, [x2, #DCFG_BOOTLOCPTRL_OFFSET] + + /* Write the 32-bit BOOTLOCPTRH register */ + lsr x1, x0, #32 + str w1, [x2, #DCFG_BOOTLOCPTRH_OFFSET] + ret +endfunc _soc_set_start_addr + +/* + * Part of CPU_ON + * + * This function restarts a core shutdown via _soc_core_entr_off + * in: x0 = core mask lsb (of the target cpu) + * out: x0 == 0, on success + * x0 != 0, on failure + * uses x0 - x6 + */ +_soc_core_restart: + mov x6, x30 + mov x4, x0 + + /* pgm GICD_CTLR - enable secure grp0 */ + mov x5, #NXP_GICD_ADDR + ldr w2, [x5, #GICD_CTLR_OFFSET] + orr w2, w2, #GICD_CTLR_EN_GRP_0 + str w2, [x5, #GICD_CTLR_OFFSET] + dsb sy + isb + + /* Poll on RWP til write completes */ +4: + ldr w2, [x5, #GICD_CTLR_OFFSET] + tst w2, #GICD_CTLR_RWP + b.ne 4b + + /* + * x4 = core mask lsb + * x5 = gicd base addr + */ + + mov x0, x4 + bl get_mpidr_value + + /* Generate target list bit */ + and x1, x0, #MPIDR_AFFINITY0_MASK + mov x2, #1 + lsl x2, x2, x1 + + /* Get the affinity1 field */ + and x1, x0, #MPIDR_AFFINITY1_MASK + lsl x1, x1, #8 + orr x2, x2, x1 + + /* Insert the INTID for SGI15 */ + orr x2, x2, #ICC_SGI0R_EL1_INTID + + /* Fire the SGI */ + msr ICC_SGI0R_EL1, x2 + dsb sy + isb + + /* Load '0' on success */ + mov x0, xzr + + mov x30, x6 + ret + +/* + * Part of CPU_OFF + * + * This function programs SoC & GIC registers in preparation for shutting down + * the core + * in: x0 = core mask lsb + * out: none + * uses x0 - x7 + */ +_soc_core_prep_off: + mov x8, x30 + mov x7, x0 + + /* x7 = core mask lsb */ + + mrs x1, CPUECTLR_EL1 + + /* Set smp and disable L2 snoops in cpuectlr */ + orr x1, x1, #CPUECTLR_SMPEN_EN + orr x1, x1, #CPUECTLR_DISABLE_TWALK_PREFETCH + bic x1, x1, #CPUECTLR_INS_PREFETCH_MASK + bic x1, x1, #CPUECTLR_DAT_PREFETCH_MASK + + /* Set retention control in cpuectlr */ + bic x1, x1, #CPUECTLR_TIMER_MASK + orr x1, x1, #CPUECTLR_TIMER_2TICKS + msr CPUECTLR_EL1, x1 + + /* Get redistributor rd base addr for this core */ + mov x0, x7 + bl get_gic_rd_base + mov x6, x0 + + /* Get redistributor sgi base addr for this core */ + mov x0, x7 + bl get_gic_sgi_base + mov x5, x0 + + /* + * x5 = gicr sgi base addr + * x6 = gicr rd base addr + * x7 = core mask lsb + */ + + /* Disable SGI 15 at redistributor - GICR_ICENABLER0 */ + mov w3, #GICR_ICENABLER0_SGI15 + str w3, [x5, #GICR_ICENABLER0_OFFSET] +2: + /* Poll on rwp bit in GICR_CTLR */ + ldr w4, [x6, #GICR_CTLR_OFFSET] + tst w4, #GICR_CTLR_RWP + b.ne 2b + + /* Disable GRP1 interrupts at cpu interface */ + msr ICC_IGRPEN1_EL3, xzr + + /* Disable GRP0 ints at cpu interface */ + msr ICC_IGRPEN0_EL1, xzr + + /* Program the redistributor - poll on GICR_CTLR.RWP as needed */ + + /* Define SGI 15 as Grp0 - GICR_IGROUPR0 */ + ldr w4, [x5, #GICR_IGROUPR0_OFFSET] + bic w4, w4, #GICR_IGROUPR0_SGI15 + str w4, [x5, #GICR_IGROUPR0_OFFSET] + + /* Define SGI 15 as Grp0 - GICR_IGRPMODR0 */ + ldr w3, [x5, #GICR_IGRPMODR0_OFFSET] + bic w3, w3, #GICR_IGRPMODR0_SGI15 + str w3, [x5, #GICR_IGRPMODR0_OFFSET] + + /* Set priority of SGI 15 to highest (0x0) - GICR_IPRIORITYR3 */ + ldr w4, [x5, #GICR_IPRIORITYR3_OFFSET] + bic w4, w4, #GICR_IPRIORITYR3_SGI15_MASK + str w4, [x5, #GICR_IPRIORITYR3_OFFSET] + + /* Enable SGI 15 at redistributor - GICR_ISENABLER0 */ + mov w3, #GICR_ISENABLER0_SGI15 + str w3, [x5, #GICR_ISENABLER0_OFFSET] + dsb sy + isb +3: + /* Poll on rwp bit in GICR_CTLR */ + ldr w4, [x6, #GICR_CTLR_OFFSET] + tst w4, #GICR_CTLR_RWP + b.ne 3b + + /* Quiesce the debug interfaces */ + mrs x3, osdlr_el1 + orr x3, x3, #OSDLR_EL1_DLK_LOCK + msr osdlr_el1, x3 + isb + + /* Enable grp0 ints */ + mov x3, #ICC_IGRPEN0_EL1_EN + msr ICC_IGRPEN0_EL1, x3 + + /* + * x5 = gicr sgi base addr + * x6 = gicr rd base addr + * x7 = core mask lsb + */ + + /* Clear any pending interrupts */ + mvn w1, wzr + str w1, [x5, #GICR_ICPENDR0_OFFSET] + + /* Make sure system counter is enabled */ + ldr x3, =NXP_TIMER_ADDR + ldr w0, [x3, #SYS_COUNTER_CNTCR_OFFSET] + tst w0, #SYS_COUNTER_CNTCR_EN + b.ne 4f + orr w0, w0, #SYS_COUNTER_CNTCR_EN + str w0, [x3, #SYS_COUNTER_CNTCR_OFFSET] +4: + /* Enable the core timer and mask timer interrupt */ + mov x1, #CNTP_CTL_EL0_EN + orr x1, x1, #CNTP_CTL_EL0_IMASK + msr cntp_ctl_el0, x1 + + isb + mov x30, x8 + ret + +/* + * Part of CPU_OFF + * + * This function performs the final steps to shutdown the core + * in: x0 = core mask lsb + * out: none + * uses x0 - x5 + */ +_soc_core_entr_off: + mov x5, x30 + mov x4, x0 + + /* x4 = core mask */ +1: + /* Enter low-power state by executing wfi */ + wfi + + /* See if SGI15 woke us up */ + mrs x2, ICC_IAR0_EL1 + mov x3, #ICC_IAR0_EL1_SGI15 + cmp x2, x3 + b.ne 1b + + /* Deactivate the int */ + msr ICC_EOIR0_EL1, x2 + + /* x4 = core mask */ +2: + /* Check if core has been turned on */ + mov x0, x4 + bl _getCoreState + + /* x0 = core state */ + + cmp x0, #CORE_WAKEUP + b.ne 1b + + /* If we get here, then we have exited the wfi */ + mov x30, x5 + ret + +/* + * Part of CPU_OFF + * + * This function starts the process of starting a core back up + * in: x0 = core mask lsb + * out: none + * uses x0, x1, x2, x3, x4, x5, x6 + */ +_soc_core_exit_off: + mov x6, x30 + mov x5, x0 + + /* Disable forwarding of GRP0 ints at cpu interface */ + msr ICC_IGRPEN0_EL1, xzr + + /* Get redistributor sgi base addr for this core */ + mov x0, x5 + bl get_gic_sgi_base + mov x4, x0 + + /* x4 = gicr sgi base addr */ + /* x5 = core mask */ + + /* Disable SGI 15 at redistributor - GICR_ICENABLER0 */ + mov w1, #GICR_ICENABLER0_SGI15 + str w1, [x4, #GICR_ICENABLER0_OFFSET] + + /* Get redistributor rd base addr for this core */ + mov x0, x5 + bl get_gic_rd_base + mov x4, x0 + + /* x4 = gicr rd base addr */ +2: + /* Poll on rwp bit in GICR_CTLR */ + ldr w2, [x4, #GICR_CTLR_OFFSET] + tst w2, #GICR_CTLR_RWP + b.ne 2b + + /* x4 = gicr rd base addr */ + + /* Unlock the debug interfaces */ + mrs x3, osdlr_el1 + bic x3, x3, #OSDLR_EL1_DLK_LOCK + msr osdlr_el1, x3 + isb + + dsb sy + isb + mov x30, x6 + ret + +/* + * This function requests a reset of the entire SOC + * in: none + * out: none + * uses: x0, x1, x2, x3, x4, x5, x6 + */ +_soc_sys_reset: + mov x3, x30 + + /* Make sure the mask is cleared in the reset request mask register */ + mov x0, #RST_RSTRQMR1_OFFSET + mov w1, wzr + bl _write_reg_reset + + /* Set the reset request */ + mov x4, #RST_RSTCR_OFFSET + mov x0, x4 + mov w1, #RSTCR_RESET_REQ + bl _write_reg_reset + + /* x4 = RST_RSTCR_OFFSET */ + + /* + * Just in case this address range is mapped as cacheable, + * flush the write out of the dcaches + */ + mov x2, #NXP_RESET_ADDR + add x2, x2, x4 + dc cvac, x2 + dsb st + isb + + /* This function does not return */ +1: + wfi + b 1b + +/* + * Part of SYSTEM_OFF + * + * This function turns off the SoC clocks + * Note: this function is not intended to return, and the only allowable + * recovery is POR + * in: none + * out: none + * uses x0, x1, x2, x3 + */ +_soc_sys_off: + /* + * Disable sec, spi and flexspi + * TBD - Check if eNETC needs to be disabled + */ + ldr x2, =NXP_DCFG_ADDR + ldr x0, =DCFG_DEVDISR1_OFFSET + ldr w1, =DCFG_DEVDISR1_SEC + str w1, [x2, x0] + ldr x0, =DCFG_DEVDISR4_OFFSET + ldr w1, =DCFG_DEVDISR4_SPI_QSPI + str w1, [x2, x0] + + /* Set TPMWAKEMR0 */ + ldr x0, =TPMWAKEMR0_ADDR + mov w1, #0x1 + str w1, [x0] + + /* Disable icache, dcache, mmu @ EL1 */ + mov x1, #SCTLR_I_C_M_MASK + mrs x0, sctlr_el1 + bic x0, x0, x1 + msr sctlr_el1, x0 + + /* Disable L2 prefetches */ + mrs x0, CPUECTLR_EL1 + orr x0, x0, #CPUECTLR_SMPEN_EN + bic x0, x0, #CPUECTLR_TIMER_MASK + orr x0, x0, #CPUECTLR_TIMER_2TICKS + msr CPUECTLR_EL1, x0 + dsb sy + isb + + /* Disable CCI snoop domain */ + ldr x0, =NXP_CCI_ADDR + mov w1, #0x1 + str w1, [x0] + + bl get_pmu_idle_core_mask + + /* x3 = pmu base addr */ + mov x3, #NXP_PMU_ADDR +4: + ldr w1, [x3, #PMU_PCPW20SR_OFFSET] + cmp w1, w0 + b.ne 4b + + bl get_pmu_idle_cluster_mask + mov x3, #NXP_PMU_ADDR + str w0, [x3, #PMU_CLAINACTSETR_OFFSET] + + bl get_pmu_idle_core_mask + mov x3, #NXP_PMU_ADDR +1: + ldr w1, [x3, #PMU_PCPW20SR_OFFSET] + cmp w1, w0 + b.ne 1b + + bl get_pmu_flush_cluster_mask + mov x3, #NXP_PMU_ADDR + str w0, [x3, #PMU_CLL2FLUSHSETR_OFFSET] +2: + ldr w1, [x3, #PMU_CLL2FLUSHSR_OFFSET] + cmp w1, w0 + b.ne 2b + + str w0, [x3, #PMU_CLSL2FLUSHCLRR_OFFSET] + + str w0, [x3, #PMU_CLSINACTSETR_OFFSET] + + mov x2, #DAIF_SET_MASK + mrs x1, spsr_el1 + orr x1, x1, x2 + msr spsr_el1, x1 + + mrs x1, spsr_el2 + orr x1, x1, x2 + msr spsr_el2, x1 + + /* Force the debug interface to be quiescent */ + mrs x0, osdlr_el1 + orr x0, x0, #0x1 + msr osdlr_el1, x0 + + /* Invalidate all TLB entries at all 3 exception levels */ + tlbi alle1 + tlbi alle2 + tlbi alle3 + + /* x3 = pmu base addr */ + + /* Request lpm20 */ + ldr x0, =PMU_POWMGTCSR_OFFSET + ldr w1, =PMU_POWMGTCSR_VAL + str w1, [x3, x0] + isb + dsb sy +5: + wfe + b.eq 5b + +/* + * Part of CPU_SUSPEND + * + * This function performs SoC-specific programming prior to standby + * in: x0 = core mask lsb + * out: none + * uses x0, x1 + */ +_soc_core_prep_stdby: + /* Clear CPUECTLR_EL1[2:0] */ + mrs x1, CPUECTLR_EL1 + bic x1, x1, #CPUECTLR_TIMER_MASK + msr CPUECTLR_EL1, x1 + + ret + +/* + * Part of CPU_SUSPEND + * + * This function puts the calling core into standby state + * in: x0 = core mask lsb + * out: none + * uses x0 + */ +_soc_core_entr_stdby: + /* X0 = core mask lsb */ + dsb sy + isb + wfi + + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs any SoC-specific cleanup after standby state + * in: x0 = core mask lsb + * out: none + * uses none + */ +_soc_core_exit_stdby: + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs SoC-specific programming prior to power-down + * in: x0 = core mask lsb + * out: none + * uses x0, x1, x2 + */ +_soc_core_prep_pwrdn: + /* Make sure system counter is enabled */ + ldr x2, =NXP_TIMER_ADDR + ldr w0, [x2, #SYS_COUNTER_CNTCR_OFFSET] + tst w0, #SYS_COUNTER_CNTCR_EN + b.ne 1f + orr w0, w0, #SYS_COUNTER_CNTCR_EN + str w0, [x2, #SYS_COUNTER_CNTCR_OFFSET] +1: + /* + * Enable dynamic retention control (CPUECTLR[2:0]) + * Set the SMPEN bit (CPUECTLR[6]) + */ + mrs x1, CPUECTLR_EL1 + bic x1, x1, #CPUECTLR_RET_MASK + orr x1, x1, #CPUECTLR_TIMER_2TICKS + orr x1, x1, #CPUECTLR_SMPEN_EN + msr CPUECTLR_EL1, x1 + + isb + ret + +/* + * Part of CPU_SUSPEND + * + * This function puts the calling core into a power-down state + * in: x0 = core mask lsb + * out: none + * uses x0 + */ +_soc_core_entr_pwrdn: + /* X0 = core mask lsb */ + dsb sy + isb + wfi + + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs any SoC-specific cleanup after power-down state + * in: x0 = core mask lsb + * out: none + * uses none + */ +_soc_core_exit_pwrdn: + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs SoC-specific programming prior to standby + * in: x0 = core mask lsb + * out: none + * uses x0, x1 + */ +_soc_clstr_prep_stdby: + /* Clear CPUECTLR_EL1[2:0] */ + mrs x1, CPUECTLR_EL1 + bic x1, x1, #CPUECTLR_TIMER_MASK + msr CPUECTLR_EL1, x1 + + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs any SoC-specific cleanup after standby state + * in: x0 = core mask lsb + * out: none + * uses none + */ +_soc_clstr_exit_stdby: + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs SoC-specific programming prior to power-down + * in: x0 = core mask lsb + * out: none + * uses x0, x1, x2 + */ +_soc_clstr_prep_pwrdn: + /* Make sure system counter is enabled */ + ldr x2, =NXP_TIMER_ADDR + ldr w0, [x2, #SYS_COUNTER_CNTCR_OFFSET] + tst w0, #SYS_COUNTER_CNTCR_EN + b.ne 1f + orr w0, w0, #SYS_COUNTER_CNTCR_EN + str w0, [x2, #SYS_COUNTER_CNTCR_OFFSET] +1: + /* + * Enable dynamic retention control (CPUECTLR[2:0]) + * Set the SMPEN bit (CPUECTLR[6]) + */ + mrs x1, CPUECTLR_EL1 + bic x1, x1, #CPUECTLR_RET_MASK + orr x1, x1, #CPUECTLR_TIMER_2TICKS + orr x1, x1, #CPUECTLR_SMPEN_EN + msr CPUECTLR_EL1, x1 + + isb + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs any SoC-specific cleanup after power-down state + * in: x0 = core mask lsb + * out: none + * uses none + */ +_soc_clstr_exit_pwrdn: + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs SoC-specific programming prior to standby + * in: x0 = core mask lsb + * out: none + * uses x0, x1 + */ +_soc_sys_prep_stdby: + /* Clear CPUECTLR_EL1[2:0] */ + mrs x1, CPUECTLR_EL1 + bic x1, x1, #CPUECTLR_TIMER_MASK + msr CPUECTLR_EL1, x1 + + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs any SoC-specific cleanup after standby state + * in: x0 = core mask lsb + * out: none + * uses none + */ +_soc_sys_exit_stdby: + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs SoC-specific programming prior to + * suspend-to-power-down + * in: x0 = core mask lsb + * out: none + * uses x0, x1, x2, x3, x4 + */ +_soc_sys_prep_pwrdn: + /* Set retention control */ + mrs x0, CPUECTLR_EL1 + bic x0, x0, #CPUECTLR_TIMER_MASK + orr x0, x0, #CPUECTLR_TIMER_2TICKS + orr x0, x0, #CPUECTLR_SMPEN_EN + msr CPUECTLR_EL1, x0 + dsb sy + isb + ret + +/* + * Part of CPU_SUSPEND + * + * This function puts the calling core, and potentially the soc, into a + * low-power state + * in: x0 = core mask lsb + * out: x0 = 0, success + * x0 < 0, failure + * uses x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x13, x14, x15, + * x16, x17, x18 + */ +_soc_sys_pwrdn_wfi: + mov x18, x30 + + mov x3, #NXP_PMU_ADDR + + /* x3 = pmu base addr */ + + /* Backup epu registers to stack */ + ldr x2, =NXP_EPU_ADDR + ldr w4, [x2, #EPU_EPIMCR10_OFFSET] + ldr w5, [x2, #EPU_EPCCR10_OFFSET] + ldr w6, [x2, #EPU_EPCTR10_OFFSET] + ldr w7, [x2, #EPU_EPGCR_OFFSET] + stp x4, x5, [sp, #-16]! + stp x6, x7, [sp, #-16]! + + /* + * x2 = epu base addr + * x3 = pmu base addr + */ + + /* Set up EPU event to receive the wake signal from PMU */ + mov w4, #EPU_EPIMCR10_VAL + mov w5, #EPU_EPCCR10_VAL + mov w6, #EPU_EPCTR10_VAL + mov w7, #EPU_EPGCR_VAL + str w4, [x2, #EPU_EPIMCR10_OFFSET] + str w5, [x2, #EPU_EPCCR10_OFFSET] + str w6, [x2, #EPU_EPCTR10_OFFSET] + str w7, [x2, #EPU_EPGCR_OFFSET] + + ldr x2, =NXP_GICD_ADDR + + /* + * x2 = gicd base addr + * x3 = pmu base addr + */ + + /* Backup flextimer/mmc/usb interrupt router */ + ldr x0, =GICD_IROUTER60_OFFSET + ldr x1, =GICD_IROUTER76_OFFSET + ldr w4, [x2, x0] + ldr w5, [x2, x1] + ldr x0, =GICD_IROUTER112_OFFSET + ldr x1, =GICD_IROUTER113_OFFSET + ldr w6, [x2, x0] + ldr w7, [x2, x1] + stp x4, x5, [sp, #-16]! + stp x6, x7, [sp, #-16]! + + /* + * x2 = gicd base addr + * x3 = pmu base addr + * x0 = GICD_IROUTER112_OFFSET + * x1 = GICD_IROUTER113_OFFSET + */ + + /* Re-route interrupt to cluster 1 */ + ldr w4, =GICD_IROUTER_VALUE + str w4, [x2, x0] + str w4, [x2, x1] + ldr x0, =GICD_IROUTER60_OFFSET + ldr x1, =GICD_IROUTER76_OFFSET + str w4, [x2, x0] + str w4, [x2, x1] + dsb sy + isb + + /* x3 = pmu base addr */ + + /* Disable sec, Check for eNETC, spi and qspi */ + ldr x2, =NXP_DCFG_ADDR + ldr x0, =DCFG_DEVDISR1_OFFSET + ldr w1, =DCFG_DEVDISR1_SEC + str w1, [x2, x0] + + ldr x0, =DCFG_DEVDISR4_OFFSET + ldr w1, =DCFG_DEVDISR4_SPI_QSPI + str w1, [x2, x0] + + /* x3 = pmu base addr */ + + /* Set TPMWAKEMR0 */ + ldr x0, =TPMWAKEMR0_ADDR + mov w1, #0x1 + str w1, [x0] + + /* Disable CCI snoop domain */ + ldr x0, =NXP_CCI_ADDR + mov w1, #0x1 + str w1, [x0] + + /* Setup retention control */ + mrs x0, CPUECTLR_EL1 + orr x0, x0, #CPUECTLR_SMPEN_EN + orr x0, x0, #CPUECTLR_TIMER_2TICKS + msr CPUECTLR_EL1, x0 + dsb sy + isb + + bl get_pmu_idle_core_mask + mov x3, #NXP_PMU_ADDR +8: + ldr w1, [x3, #PMU_PCPW20SR_OFFSET] + cmp w1, w0 + b.ne 8b + + /* x3 = NXP_PMU_ADDR */ + /* 1 cluster SoC */ + + bl get_pmu_idle_cluster_mask + mov x3, #NXP_PMU_ADDR + + str w0, [x3, #PMU_CLAINACTSETR_OFFSET] + + bl get_pmu_idle_core_mask + /* x3 = NXP_PMU_ADDR */ + mov x3, #NXP_PMU_ADDR +1: + ldr w1, [x3, #PMU_PCPW20SR_OFFSET] + cmp w1, w0 + b.ne 1b + + /* x3 = NXP_PMU_ADDR */ + bl get_pmu_flush_cluster_mask + mov x3, #NXP_PMU_ADDR + + str w0, [x3, #PMU_CLL2FLUSHSETR_OFFSET] + + /* x3 = NXP_PMU_ADDR */ +2: + ldr w1, [x3, #PMU_CLL2FLUSHSR_OFFSET] + cmp w1, w0 + b.ne 2b + + /* x3 = NXP_PMU_ADDR */ + + str w0, [x3, #PMU_CLSL2FLUSHCLRR_OFFSET] + + str w0, [x3, #PMU_CLSINACTSETR_OFFSET] + + /* Force the debug interface to be quiescent */ + mrs x0, osdlr_el1 + orr x0, x0, #0x1 + msr osdlr_el1, x0 + + /* + * Enable the WakeRequest signal + * x3 is cpu mask starting from cpu1 to cpu0 + */ + bl get_tot_num_cores + sub x0, x0, #1 + mov x3, #0x1 + lsl x3, x3, x0 +2: + mov x0, x3 + bl get_gic_rd_base // 0-2 + ldr w1, [x0, #GICR_WAKER_OFFSET] + orr w1, w1, #GICR_WAKER_SLEEP_BIT + str w1, [x0, #GICR_WAKER_OFFSET] +1: + ldr w1, [x0, #GICR_WAKER_OFFSET] + cmp w1, #GICR_WAKER_ASLEEP + b.ne 1b + + lsr x3, x3, #1 + cbnz x3, 2b + + /* Invalidate all TLB entries at all 3 exception levels */ + tlbi alle1 + tlbi alle2 + tlbi alle3 + + /* Request lpm20 */ + mov x3, #NXP_PMU_ADDR + ldr x0, =PMU_POWMGTCSR_OFFSET + ldr w1, =PMU_POWMGTCSR_VAL + str w1, [x3, x0] + + ldr x5, =NXP_EPU_ADDR +4: + wfe + ldr w1, [x5, #EPU_EPCTR10_OFFSET] + cmp w1, #0 + b.eq 4b + + /* x3 = NXP_PMU_ADDR */ + + bl get_pmu_idle_cluster_mask + mov x3, NXP_PMU_ADDR + + /* Re-enable the GPP ACP */ + str w0, [x3, #PMU_CLAINACTCLRR_OFFSET] + str w0, [x3, #PMU_CLSINACTCLRR_OFFSET] + + /* x3 = NXP_PMU_ADDR */ +3: + ldr w1, [x3, #PMU_CLAINACTSETR_OFFSET] + cbnz w1, 3b +4: + ldr w1, [x3, #PMU_CLSINACTSETR_OFFSET] + cbnz w1, 4b + + /* + * Enable the WakeRequest signal on cpu 0-1 + * x3 is cpu mask starting from cpu1 + */ + bl get_tot_num_cores + sub x0, x0, #1 + mov x3, #0x1 + lsl x3, x3, x0 +2: + mov x0, x3 + bl get_gic_rd_base // 0-2 + ldr w1, [x0, #GICR_WAKER_OFFSET] + bic w1, w1, #GICR_WAKER_SLEEP_BIT + str w1, [x0, #GICR_WAKER_OFFSET] +1: + ldr w1, [x0, #GICR_WAKER_OFFSET] + cbnz w1, 1b + + lsr x3, x3, #1 + cbnz x3, 2b + + /* Enable CCI snoop domain */ + ldr x0, =NXP_CCI_ADDR + str wzr, [x0] + dsb sy + isb + + ldr x3, =NXP_EPU_ADDR + + /* x3 = epu base addr */ + + /* Enable sec, enetc, spi and qspi */ + ldr x2, =NXP_DCFG_ADDR + str wzr, [x2, #DCFG_DEVDISR1_OFFSET] + str wzr, [x2, #DCFG_DEVDISR2_OFFSET] + str wzr, [x2, #DCFG_DEVDISR4_OFFSET] + + /* Restore flextimer/mmc/usb interrupt router */ + ldr x3, =NXP_GICD_ADDR + ldp x0, x2, [sp], #16 + ldr x1, =GICD_IROUTER113_OFFSET + str w2, [x3, x1] + ldr x1, =GICD_IROUTER112_OFFSET + str w0, [x3, x1] + ldp x0, x2, [sp], #16 + ldr x1, =GICD_IROUTER76_OFFSET + str w2, [x3, x1] + ldr x1, =GICD_IROUTER60_OFFSET + str w0, [x3, x1] + + /* Restore EPU registers */ + ldr x3, =NXP_EPU_ADDR + ldp x0, x2, [sp], #16 + str w2, [x3, #EPU_EPGCR_OFFSET] + str w0, [x3, #EPU_EPCTR10_OFFSET] + ldp x2, x1, [sp], #16 + str w1, [x3, #EPU_EPCCR10_OFFSET] + str w2, [x3, #EPU_EPIMCR10_OFFSET] + + dsb sy + isb + mov x30, x18 + ret + +/* + * Part of CPU_SUSPEND + * + * This function performs any SoC-specific cleanup after power-down + * in: x0 = core mask lsb + * out: none + * uses x0, x1 + */ +_soc_sys_exit_pwrdn: + /* Enable stack alignment checking */ + mrs x1, SCTLR_EL1 + orr x1, x1, #0x4 + msr SCTLR_EL1, x1 + + /* Enable debug interface */ + mrs x1, osdlr_el1 + bic x1, x1, #OSDLR_EL1_DLK_LOCK + msr osdlr_el1, x1 + + /* Enable i-cache */ + mrs x1, SCTLR_EL3 + orr x1, x1, #SCTLR_I_MASK + msr SCTLR_EL3, x1 + + isb + ret + +/* + * This function setc up the TrustZone Address Space Controller (TZASC) + * in: none + * out: none + * uses x0, x1 + */ +init_tzpc: + /* Set Non Secure access for all devices protected via TZPC */ + ldr x1, =TZPCDECPROT_0_SET_BASE /* decode Protection-0 Set Reg */ + mov w0, #0xFF /* set decode region to NS, Bits[7:0] */ + str w0, [x1] + + ldr x1, =TZPCDECPROT_1_SET_BASE /* decode Protection-1 Set Reg */ + mov w0, #0xFF /* set decode region to NS, Bits[7:0] */ + str w0, [x1] + + ldr x1, =TZPCDECPROT_2_SET_BASE /* decode Protection-2 Set Reg */ + mov w0, #0xFF /* set decode region to NS, Bits[7:0] */ + str w0, [x1] + + /* entire SRAM as NS */ + ldr x1, =NXP_OCRAM_TZPC_ADDR /* secure RAM region size Reg */ + mov w0, #0x00000000 /* 0x00000000 = no secure region */ + str w0, [x1] + + ret + +/* + * This function performs any needed initialization on SecMon for + * boot services + */ +initSecMon: + /* Read the register hpcomr */ + ldr x1, =NXP_SNVS_ADDR + ldr w0, [x1, #SECMON_HPCOMR_OFFSET] + /* Turn off secure access for the privileged registers */ + orr w0, w0, #SECMON_HPCOMR_NPSWAEN + /* Write back */ + str w0, [x1, #SECMON_HPCOMR_OFFSET] + + ret + +/* + * This function checks to see if cores which are to be disabled have been + * released from reset - if not, it releases them + * in: none + * out: none + * uses x0, x1, x2, x3, x4, x5, x6, x7, x8 + */ +release_disabled: + stp x18, x30, [sp, #-16]! + + /* + * Get the number of cpus on this device + * Calling the below c function. + * No need to Callee saved registers x9-x15, + * as these registers are not used by the callee + * prior to calling the below C-routine. + */ + bl get_tot_num_cores + mov x6, x0 + + /* Read COREDISABLESR */ + mov x0, #NXP_DCFG_ADDR + ldr w4, [x0, #DCFG_COREDISABLEDSR_OFFSET] + + mov x0, #NXP_RESET_ADDR + ldr w5, [x0, #BRR_OFFSET] + + /* Load the core mask for the first core */ + mov x7, #1 + + /* + * x4 = COREDISABLESR + * x5 = BRR + * x6 = loop count + * x7 = core mask bit + */ +2: + /* Check if the core is to be disabled */ + tst x4, x7 + b.eq 1f + + /* See if disabled cores have already been released from reset */ + tst x5, x7 + b.ne 1f + + /* If core has not been released, then release it (0-3) */ + mov x0, x7 + bl _soc_core_release + + /* Record the core state in the data area (0-3) */ + mov x0, x7 + mov x1, #CORE_DISABLED + bl _setCoreState +1: + /* Decrement the counter */ + subs x6, x6, #1 + b.le 3f + /* Shift the core mask to the next core */ + lsl x7, x7, #1 + /* Continue */ + b 2b +3: + ldp x18, x30, [sp], #16 + ret + +/* + * Write a register in the DCFG block + * in: x0 = offset + * in: w1 = value to write + * uses x0, x1, x2 + */ +_write_reg_dcfg: + ldr x2, =NXP_DCFG_ADDR + str w1, [x2, x0] + ret + +/* + * Read a register in the DCFG block + * in: x0 = offset + * out: w0 = value read + * uses x0, x1, x2 + */ +_read_reg_dcfg: + ldr x2, =NXP_DCFG_ADDR + ldr w1, [x2, x0] + mov w0, w1 + ret + +/* + * This function returns an mpidr value for a core, given a core_mask_lsb + * in: x0 = core mask lsb + * out: x0 = affinity2:affinity1:affinity0, where affinity is 8-bits + * uses x0, x1 + */ +get_mpidr_value: + /* Convert a core mask to an SoC core number */ + clz w0, w0 + mov w1, #31 + sub w0, w1, w0 + + /* Get the mpidr core number from the SoC core number */ + mov w1, wzr + tst x0, #1 + b.eq 1f + orr w1, w1, #1 +1: + /* Extract the cluster number */ + lsr w0, w0, #1 + orr w0, w1, w0, lsl #8 + + ret + +/* + * This function returns the redistributor base address for the core specified + * in x1 + * in: x0 - core mask lsb of specified core + * out: x0 = redistributor rd base address for specified core + * uses x0, x1, x2 + */ +get_gic_rd_base: + /* Get the 0-based core number */ + clz w1, w0 + mov w2, #0x20 + sub w2, w2, w1 + sub w2, w2, #1 + + /* x2 = core number / loop counter */ + ldr x0, =NXP_GICR_ADDR + mov x1, #GIC_RD_OFFSET +2: + cbz x2, 1f + add x0, x0, x1 + sub x2, x2, #1 + b 2b +1: + ret + +/* + * This function returns the redistributor base address for the core specified + * in x1 + * in: x0 - core mask lsb of specified core + * out: x0 = redistributor sgi base address for specified core + * uses x0, x1, x2 + */ +get_gic_sgi_base: + /* Get the 0-based core number */ + clz w1, w0 + mov w2, #0x20 + sub w2, w2, w1 + sub w2, w2, #1 + + /* x2 = core number / loop counter */ + ldr x0, =NXP_GICR_SGI_ADDR + mov x1, #GIC_SGI_OFFSET +2: + cbz x2, 1f + add x0, x0, x1 + sub x2, x2, #1 + b 2b +1: + ret + +/* + * Write a register in the RESET block + * in: x0 = offset + * in: w1 = value to write + * uses x0, x1, x2 + */ +_write_reg_reset: + ldr x2, =NXP_RESET_ADDR + str w1, [x2, x0] + ret + +/* + * Read a register in the RESET block + * in: x0 = offset + * out: w0 = value read + * uses x0, x1 + */ +_read_reg_reset: + ldr x1, =NXP_RESET_ADDR + ldr w0, [x1, x0] + ret |