diff options
Diffstat (limited to 'plat/nxp/soc-ls1088a/aarch64/ls1088a.S')
| -rw-r--r-- | plat/nxp/soc-ls1088a/aarch64/ls1088a.S | 1817 |
1 files changed, 1817 insertions, 0 deletions
diff --git a/plat/nxp/soc-ls1088a/aarch64/ls1088a.S b/plat/nxp/soc-ls1088a/aarch64/ls1088a.S new file mode 100644 index 0000000..0c6b7ea --- /dev/null +++ b/plat/nxp/soc-ls1088a/aarch64/ls1088a.S @@ -0,0 +1,1817 @@ +/* + * Copyright 2022 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 "bl31_data.h" +#include "plat_psci.h" +#include "platform_def.h" + +/* + * the BASE address for these offsets is AUX_01_DATA in the + * bootcore's psci data region + */ +#define DEVDISR2_MASK_OFFSET 0x0 /* references AUX_01_DATA */ +#define DEVDISR5_MASK_OFFSET 0x8 /* references AUX_02_DATA */ + +/* + * the BASE address for these offsets is AUX_04_DATA in the + * bootcore's psci data region + */ +#define GICD_BASE_ADDR_OFFSET 0x0 /* references AUX_04_DATA */ +#define GICC_BASE_ADDR_OFFSET 0x8 /* references AUX_05_DATA */ + +#define IPSTPACK_RETRY_CNT 0x10000 +#define DDR_SLEEP_RETRY_CNT 0x10000 +#define CPUACTLR_EL1 S3_1_C15_C2_0 +#define DDR_SDRAM_CFG_2_FRCSR 0x80000000 +#define DDR_SDRAM_CFG_2_OFFSET 0x114 +#define DDR_TIMING_CFG_4_OFFSET 0x160 +#define DDR_CNTRL_BASE_ADDR 0x01080000 + +#define DLL_LOCK_MASK 0x3 +#define DLL_LOCK_VALUE 0x2 + +#define ERROR_DDR_SLEEP -1 +#define ERROR_DDR_WAKE -2 +#define ERROR_NO_QUIESCE -3 + +#define CORE_RESTARTABLE 0 +#define CORE_NOT_RESTARTABLE 1 + +.global soc_init_lowlevel +.global soc_init_percpu + +.global _soc_core_release +.global _soc_core_restart +.global _soc_ck_disabled +.global _soc_sys_reset +.global _soc_sys_off + +.global _soc_core_prep_off +.global _soc_core_entr_off +.global _soc_core_exit_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 + +.global _set_platform_security +.global _soc_set_start_addr + +.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 + +.equ MPIDR_AFFINITY0_MASK, 0x00FF +.equ MPIDR_AFFINITY1_MASK, 0xFF00 +.equ CPUECTLR_DISABLE_TWALK_PREFETCH, 0x4000000000 +.equ CPUECTLR_INS_PREFETCH_MASK, 0x1800000000 +.equ CPUECTLR_DAT_PREFETCH_MASK, 0x0300000000 +.equ OSDLR_EL1_DLK_LOCK, 0x1 +.equ CNTP_CTL_EL0_EN, 0x1 +.equ CNTP_CTL_EL0_IMASK, 0x2 +/* shifted value for incrementing cluster count in mpidr */ +.equ MPIDR_CLUSTER, 0x100 + +/* + * This function initialize the soc, + * in: none + * out: none + * uses x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, 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 + + /* 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, x1, x2, 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 + tst x0, x2 + b.eq 1f + bl _disable_ldstr_pfetch_A53 +1: + mov x0, #NXP_PMU_ADDR + bl enable_timer_base_to_cluster + ldp x4, x30, [sp], #16 + ret +endfunc soc_init_percpu + +/* + * 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 + +/* + * this function writes a 64-bit address to bootlocptrh/l + * in: x0, 64-bit address to write to BOOTLOCPTRL/H + * out: none + * 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 releases a secondary core from reset + * in: x0 = core_mask_lsb + * out: none + * uses: x0, x1, x2, x3 + */ +_soc_core_release: + mov x3, x30 + + /* x0 = core mask */ + + ldr x1, =NXP_SEC_REGFILE_ADDR + /* + * write to CORE_HOLD to tell the bootrom that we want this core + * to run + */ + str w0, [x1, #CORE_HOLD_OFFSET] + + /* x0 = core mask */ + + /* 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 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 + */ +_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 + +/* + * 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, x1, x2, x3, x4, x5, x6 + */ +_soc_core_restart: + mov x6, x30 + mov x4, x0 + + /* x4 = core mask lsb */ + + /* 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 + + /* + * x0 = mpidr of target core + * x4 = core mask lsb of target core + * x5 = gicd base addr + */ + + /* 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, x1, x2, x3, x4, x5, x6, 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_8TICKS + 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 + + 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, x1, x2, x3, x4, 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 2f + + /* 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 */ + b . + +/* + * this function turns off the SoC + * 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: + /* + * A-009810: LPM20 entry sequence might cause + * spurious timeout reset request + * workaround: MASK RESET REQ RPTOE + */ + ldr x0, =NXP_RESET_ADDR + ldr w1, [x0, #RST_RSTRQMR1_OFFSET] + orr w1, w1, #RSTRQMR_RPTOE_MASK + str w1, [x0, #RST_RSTRQMR1_OFFSET] + + /* disable SEC, QBman 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_DEVDISR3_OFFSET + ldr w1, =DCFG_DEVDISR3_QBMAIN + 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 + orr x0, x0, #CPUECTLR_TIMER_8TICKS + msr CPUECTLR_EL1, x0 + dsb sy + isb + + /* disable CCN snoop domain */ + ldr x0, =NXP_CCI_ADDR + mov w1, #0x1 + str w1, [x0] + + 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 + + bl get_pmu_idle_cluster_mask + mov x3, #NXP_PMU_ADDR + + /* x3 = pmu base addr */ + + /* idle the ACP interfaces */ + str w0, [x3, #PMU_CLAINACTSETR_OFFSET] + + /* force the debug interface to be quiescent */ + mrs x0, osdlr_el1 + orr x0, x0, #0x1 + msr osdlr_el1, x0 + + bl get_pmu_flush_cluster_mask + /* x3 = pmu base addr */ + mov x3, #NXP_PMU_ADDR + + /* clear flush request and status */ + ldr x2, =PMU_CLSL2FLUSHCLRR_OFFSET + str w0, [x3, x2] + + /* close the Skyros master port */ + ldr x2, =PMU_CLSINACTSETR_OFFSET + str w0, [x3, x2] + + /* request lpm20 */ + ldr x0, =PMU_POWMGTCSR_OFFSET + ldr w1, =PMU_POWMGTCSR_VAL + str w1, [x3, x0] + + /* this function does not return */ +1: + wfi + b 1b + +/* + * 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, x3 + */ +_soc_core_prep_pwrdn: + /* 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 1f + orr w0, w0, #SYS_COUNTER_CNTCR_EN + str w0, [x3, #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_8TICKS + 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 cleans up after a core exits power-down + * in: x0 = core mask lsb + * out: none + * uses + */ +_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, x3 + */ +_soc_clstr_prep_pwrdn: + /* 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 1f + orr w0, w0, #SYS_COUNTER_CNTCR_EN + str w0, [x3, #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_8TICKS + orr x1, x1, #CPUECTLR_SMPEN_EN + msr CPUECTLR_EL1, x1 + + isb + ret + +/* + * part of CPU_SUSPEND + * this function cleans up after a core exits power-down + * in: x0 = core mask lsb + * out: none + * uses + */ +_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 + */ +_soc_sys_prep_pwrdn: + /* set retention control */ + mrs x0, CPUECTLR_EL1 + bic x0, x0, #CPUECTLR_TIMER_MASK + orr x0, x0, #CPUECTLR_TIMER_8TICKS + 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 + */ +_soc_sys_pwrdn_wfi: + /* Save LR to stack */ + stp x18, x30, [sp, #-16]! + + /* Poll PCPW20SR for all secondary cores to be placed in PW20 */ + bl get_tot_num_cores + mov x3, #0x1 + lsl x3, x3, x0 + sub x3, x3, #2 +1: + mov x0, #NXP_PMU_ADDR + ldr w1, [x0, #PMU_PCPW20SR_OFFSET] + cmp w1, w3 + b.ne 1b + + /* backup EPU registers to stack */ + mov x3, #NXP_PMU_ADDR + 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] + + /* + * A-010194: There is logic problem + * in the path of GIC-to-PMU to issue + * wake request to core0 + * Workaround: Re-target the wakeup interrupts + * to a core other than the last active core0 + */ + ldr x2, =NXP_GICD_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 + * 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 + + /* backup flextimer/mmc/usb interrupt enabler */ + ldr x0, =GICD_ISENABLER_1 + ldr w4, [x2, x0] + ldr x1, =GICD_ISENABLER_2 + ldr w5, [x2, x1] + stp x4, x5, [sp, #-16]! + + ldr x0, =GICD_ISENABLER_3 + ldr w4, [x2, x0] + ldr x1, =GICD_ICENABLER_1 + ldr w5, [x2, x1] + stp x4, x5, [sp, #-16]! + + ldr x0, =GICD_ICENABLER_2 + ldr w4, [x2, x0] + ldr x1, =GICD_ICENABLER_3 + ldr w5, [x2, x1] + stp x4, x5, [sp, #-16]! + + /* enable related interrupt routing */ + ldr w4, =GICD_ISENABLER_1_VALUE + ldr x0, =GICD_ISENABLER_1 + str w4, [x2, x0] + dsb sy + isb + + ldr w4, =GICD_ISENABLER_2_VALUE + ldr x0, =GICD_ISENABLER_2 + str w4, [x2, x0] + dsb sy + isb + + ldr w4, =GICD_ISENABLER_3_VALUE + ldr x0, =GICD_ISENABLER_3 + str w4, [x2, x0] + dsb sy + isb + + /* set POWMGTDCR [STP_PV_EN] = 1 */ + ldr x2, =NXP_POWMGTDCR + ldr w4, =0x01 + str w4, [x2] + + /* program IPSTPCR for override stop request (except DDR) */ + mov x3, #NXP_PMU_ADDR + + /* build an override mask for IPSTPCR4/IPSTPACK4/DEVDISR5 */ + ldr x2, =PMU_IPPDEXPCR4_OFFSET + ldr w7, [x3, x2] + + mov x5, xzr + ldr x6, =IPPDEXPCR4_MASK + and x6, x6, x7 + cbz x6, 1f + + /* + * x5 = override mask + * x6 = IPPDEXPCR bits for DEVDISR5 + * x7 = IPPDEXPCR + */ + + /* get the overrides */ + orr x4, x5, #DEVDISR5_FLX_TMR + tst x6, #IPPDEXPCR_FLX_TMR + csel x5, x5, x4, EQ +1: + /* store the DEVDISR5 override mask */ + ldr x2, =BC_PSCI_BASE + add x2, x2, #AUX_01_DATA + str w5, [x2, #DEVDISR5_MASK_OFFSET] + + mov x3, #NXP_PMU_ADDR + + /* write IPSTPCR0 - no overrides */ + ldr x2, =PMU_IPSTPCR0_OFFSET + ldr w5, =IPSTPCR0_VALUE + str w5, [x3, x2] + + /* write IPSTPCR1 - no overrides */ + ldr x2, =PMU_IPSTPCR1_OFFSET + ldr w5, =IPSTPCR1_VALUE + str w5, [x3, x2] + + /* write IPSTPCR2 - no overrides */ + ldr x2, =PMU_IPSTPCR2_OFFSET + ldr w5, =IPSTPCR2_VALUE + str w5, [x3, x2] + + /* write IPSTPCR3 - no overrides */ + ldr x2, =PMU_IPSTPCR3_OFFSET + ldr w5, =IPSTPCR3_VALUE + str w5, [x3, x2] + + /* write IPSTPCR4 - overrides possible */ + ldr x2, =BC_PSCI_BASE + add x2, x2, #AUX_01_DATA + ldr w6, [x2, #DEVDISR5_MASK_OFFSET] + ldr x2, =PMU_IPSTPCR4_OFFSET + ldr w5, =IPSTPCR4_VALUE + bic x5, x5, x6 + str w5, [x3, x2] + + /* write IPSTPCR5 - no overrides */ + ldr x2, =PMU_IPSTPCR5_OFFSET + ldr w5, =IPSTPCR5_VALUE + str w5, [x3, x2] + + /* write IPSTPCR6 - no overrides */ + ldr x2, =PMU_IPSTPCR6_OFFSET + ldr w5, =IPSTPCR6_VALUE + str w5, [x3, x2] + + /* poll IPSTPACK for IP stop acknowledgment (except DDR) */ + mov x3, #NXP_PMU_ADDR + + /* poll on IPSTPACK0 */ + ldr x2, =PMU_IPSTPACK0_OFFSET + ldr x4, =IPSTPCR0_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +3: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 14f + sub x7, x7, #1 + cbnz x7, 3b + +14: + /* poll on IPSTPACK1 */ + ldr x2, =PMU_IPSTPACK1_OFFSET + ldr x4, =IPSTPCR1_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +4: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 15f + sub x7, x7, #1 + cbnz x7, 4b + +15: + /* poll on IPSTPACK2 */ + ldr x2, =PMU_IPSTPACK2_OFFSET + ldr x4, =IPSTPCR2_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +5: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 16f + sub x7, x7, #1 + cbnz x7, 5b + +16: + /* poll on IPSTPACK3 */ + ldr x2, =PMU_IPSTPACK3_OFFSET + ldr x4, =IPSTPCR3_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +6: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 17f + sub x7, x7, #1 + cbnz x7, 6b + +17: + /* poll on IPSTPACK4 */ + ldr x2, =PMU_IPSTPACK4_OFFSET + ldr x4, =IPSTPCR4_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +7: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 18f + sub x7, x7, #1 + cbnz x7, 7b + +18: + /* poll on IPSTPACK5 */ + ldr x2, =PMU_IPSTPACK5_OFFSET + ldr x4, =IPSTPCR5_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +8: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 19f + sub x7, x7, #1 + cbnz x7, 8b + +19: + /* poll on IPSTPACK6 */ + ldr x2, =PMU_IPSTPACK6_OFFSET + ldr x4, =IPSTPCR6_VALUE + ldr x7, =IPSTPACK_RETRY_CNT +9: + ldr w0, [x3, x2] + cmp x0, x4 + b.eq 20f + sub x7, x7, #1 + cbnz x7, 9b + +20: + /* save current DEVDISR states to DDR. */ + ldr x2, =NXP_DCFG_ADDR + + /* save DEVDISR1 and load new value */ + ldr x0, =DCFG_DEVDISR1_OFFSET + ldr w1, [x2, x0] + mov w13, w1 + ldr x1, =DEVDISR1_VALUE + str w1, [x2, x0] + /* save DEVDISR2 and load new value */ + ldr x0, =DCFG_DEVDISR2_OFFSET + ldr w1, [x2, x0] + mov w14, w1 + ldr x1, =DEVDISR2_VALUE + str w1, [x2, x0] + + /* x6 = DEVDISR5 override mask */ + + /* save DEVDISR3 and load new value */ + ldr x0, =DCFG_DEVDISR3_OFFSET + ldr w1, [x2, x0] + mov w15, w1 + ldr x1, =DEVDISR3_VALUE + str w1, [x2, x0] + + /* save DEVDISR4 and load new value */ + ldr x0, =DCFG_DEVDISR4_OFFSET + ldr w1, [x2, x0] + mov w16, w1 + /* not stop uart print */ + ldr x1, =0x0000332 + str w1, [x2, x0] + + /* save DEVDISR5 and load new value */ + ldr x0, =DCFG_DEVDISR5_OFFSET + ldr w1, [x2, x0] + mov w17, w1 + /* Enable this wakeup will fail, should enable OCRAM */ + ldr x1, =0x00102300 + str w1, [x2, x0] + + /* save DEVDISR6 and load new value */ + ldr x0, =DCFG_DEVDISR6_OFFSET + ldr w1, [x2, x0] + mov w18, w1 + ldr x1, =DEVDISR6_VALUE + str w1, [x2, x0] + + /* + * w13 = DEVDISR1 saved value + * w14 = DEVDISR2 saved value + * w15 = DEVDISR3 saved value + * w16 = DEVDISR4 saved value + * w17 = DEVDISR5 saved value + * w18 = DEVDISR6 saved value + */ + /* + * A-009810: LPM20 entry sequence might cause + * spurious timeout reset request + * workaround: MASK RESET REQ RPTOE + */ + ldr x0, =NXP_RESET_ADDR + ldr w1, =RSTRQMR_RPTOE_MASK + str w1, [x0, #RST_RSTRQMR1_OFFSET] + + /* disable SEC, QBman 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_DEVDISR3_OFFSET + ldr w1, =DCFG_DEVDISR3_QBMAIN + str w1, [x2, x0] + ldr x0, =DCFG_DEVDISR4_OFFSET + ldr w1, =DCFG_DEVDISR4_SPI_QSPI + str w1, [x2, x0] + + /* + * write the GICR_WAKER.ProcessorSleep bits to 1 + * enable the WakeRequest signal + * x3 is cpu mask starting from cpu7 + */ + 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 + 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 + + /* x3 = pmu base addr */ + + /* perform Icache Warming Sequence */ + ldr x5, =IPSTPCR4_VALUE + mov x6, DDR_CNTRL_BASE_ADDR + mov x7, #NXP_PMU_ADDR + mov x8, #NXP_DCFG_ADDR + mov x10, #PMU_IPSTPCR4_OFFSET + mov x11, #PMU_IPSTPACK4_OFFSET + mov x12, #PMU_IPSTPCR3_OFFSET + mov x18, #PMU_IPSTPCR2_OFFSET + mov x19, #PMU_IPSTPCR1_OFFSET + mov x21, #PMU_IPSTPCR0_OFFSET + ldr x22, =DCFG_DEVDISR5_OFFSET + ldr x23, =NXP_EPU_ADDR + mov x9, #CORE_RESTARTABLE + bl final_pwrdown + + /* + * disable the WakeRequest signal on cpu 0-7 + * x3 is cpu mask starting from cpu7 + */ + 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 + 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 + + /* set SGI for secondary core wakeup */ + ldr x0, =0x1000002 + msr S3_0_C12_C11_7, x0 + isb + ldr x0, =0x2000004 + msr S3_0_C12_C11_7, x0 + isb + ldr x0, =0x3000008 + msr S3_0_C12_C11_7, x0 + isb + ldr x0, =0x4010001 + msr S3_0_C12_C11_7, x0 + isb + ldr x0, =0x5010002 + msr S3_0_C12_C11_7, x0 + isb + ldr x0, =0x6010004 + msr S3_0_C12_C11_7, x0 + isb + ldr x0, =0x7010008 + msr S3_0_C12_C11_7, x0 + + /* enable SEC, QBman spi and qspi */ + ldr x2, =NXP_DCFG_ADDR + str wzr, [x2, #DCFG_DEVDISR1_OFFSET] + str wzr, [x2, #DCFG_DEVDISR3_OFFSET] + str wzr, [x2, #DCFG_DEVDISR4_OFFSET] + + /* clear POWMGTDCR [STP_PV_EN] */ + ldr x2, =NXP_POWMGTDCR + ldr w4, [x2] + bic w4, w4, #0x01 + str w4, [x2] + + /* restore flextimer/mmc/usb interrupt enabler */ + ldr x3, =NXP_GICD_ADDR + ldp x0, x2, [sp], #16 + ldr x1, =GICD_ICENABLER_2 + mvn w0, w0 + str w0, [x3, x1] + ldr x1, =GICD_ICENABLER_3 + mvn w2, w2 + str w2, [x3, x1] + + ldp x0, x2, [sp], #16 + ldr x1, =GICD_ISENABLER_3 + str w0, [x3, x1] + ldr x1, =GICD_ICENABLER_1 + mvn w2, w2 + str w0, [x3, x1] + + ldp x0, x2, [sp], #16 + ldr x1, =GICD_ISENABLER_1 + str w0, [x3, x1] + ldr x1, =GICD_ISENABLER_2 + str w0, [x3, x1] + + /* 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] + + isb + /* Restor LR */ + ldp x18, x30, [sp], #16 + 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: + mrs x1, SCTLR_EL1 + orr x1, x1, #SCTLR_I_MASK + msr SCTLR_EL1, x1 + isb + 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: + mov x8, x30 + + /* read COREDISABLESR */ + mov x0, #NXP_DCFG_ADDR + ldr w4, [x0, #DCFG_COREDISABLEDSR_OFFSET] + + /* get the number of cpus on this device */ + mov x6, #PLATFORM_CORE_COUNT + + 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: + mov x30, x8 + 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 + */ +_read_reg_dcfg: + ldr x1, =NXP_DCFG_ADDR + ldr w0, [x1, x0] + ret + +/* + * this function sets 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 + * decode Protection-0 Set Reg + */ + ldr x1, =TZPCDECPROT_0_SET_BASE + /* set decode region to NS, Bits[7:0] */ + mov w0, #0xFF + str w0, [x1] + + /* decode Protection-1 Set Reg */ + ldr x1, =TZPCDECPROT_1_SET_BASE + /* set decode region to NS, Bits[7:0] */ + mov w0, #0xFF + str w0, [x1] + + /* decode Protection-2 Set Reg */ + ldr x1, =TZPCDECPROT_2_SET_BASE + /* set decode region to NS, Bits[7:0] */ + mov w0, #0xFF + str w0, [x1] + + /* + * entire SRAM as NS + * secure RAM region size Reg + */ + ldr x1, =NXP_OCRAM_TZPC_ADDR + /* 0x00000000 = no secure region */ + mov w0, #0x00000000 + str w0, [x1] + + ret + +/* this function performs 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 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 + +/* + * 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 + + /* w0 = SoC core number */ + + mov w1, wzr +2: + cmp w0, #CORES_PER_CLUSTER + b.lt 1f + sub w0, w0, #CORES_PER_CLUSTER + add w1, w1, #MPIDR_CLUSTER + b 2b + + /* insert the mpidr core number */ +1: + orr w0, w1, w0 + 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 + +/* + * this function will pwrdown ddr and the final core - it will do this + * by loading itself into the icache and then executing from there + * in: x5 = ipstpcr4 (IPSTPCR4_VALUE bic DEVDISR5_MASK) + * x6 = DDR_CNTRL_BASE_ADDR + * x7 = NXP_PMU_ADDR + * x8 = NXP_DCFG_ADDR + * x9 = 0, restartable + * = 1, non-restartable + * x10 = PMU_IPSTPCR4_OFFSET + * x11 = PMU_IPSTPACK4_OFFSET + * x12 = PMU_IPSTPCR3_OFFSET + * x18 = PMU_IPSTPCR2_OFFSET + * x19 = PMU_IPSTPCR1_OFFSET + * x21 = PMU_IPSTPCR0_OFFSET + * w13 = DEVDISR1 saved value + * w14 = DEVDISR2 saved value + * w15 = DEVDISR3 saved value + * w16 = DEVDISR4 saved value + * w17 = DEVDISR5 saved value + * x22 = DCFG_DEVDISR5_OFFSET + * x23 = NXP_EPU_ADDR + * out: none + * uses x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x13, x14, x15, x16, x17 + * x10, x11, x12, x18, x19, x21, x22, x23 + */ + +final_pwrdown: + /* delay */ + mov w4, #0xffffff +554: + sub w4, w4, #1 + cmp w4, #0 + b.ge 554b + + mov x0, xzr + b touch_line_0 + +/* 4Kb aligned */ +.align 12 +start_line_0: + mov x0, #1 + /* put ddr in self refresh - start */ + mov x2, #DDR_SDRAM_CFG_2_FRCSR + ldr w3, [x6, #DDR_SDRAM_CFG_2_OFFSET] + orr w3, w3, w2 + /* put ddr in self refresh - end */ + str w3, [x6, #DDR_SDRAM_CFG_2_OFFSET] + nop + nop +touch_line_0: + cbz x0, touch_line_1 + +start_line_1: + /* quiesce ddr clocks - start */ + orr w3, w5, #DCFG_DEVDISR5_MEM + mov w4, w3 + /* quiesce ddr clocks - end */ + str w4, [x7, x10] + mov w3, #DCFG_DEVDISR5_MEM + /* poll on ipstpack4 - start */ + mov x2, #DDR_SLEEP_RETRY_CNT + nop + nop +touch_line_1: + cbz x0, touch_line_2 + +start_line_2: + /* x11 = PMU_IPSTPACK4_OFFSET */ + ldr w1, [x7, x11] + tst w1, w3 + b.ne 5f + subs x2, x2, #1 + /* poll on ipstpack4 - end */ + b.gt start_line_2 + + /* if we get here, we have a timeout err */ + mov w4, w5 + /* x10 = PMU_IPSTPCR4_OFFSET re-enable ddr clks interface */ + str w4, [x7, x10] +touch_line_2: + cbz x0, touch_line_3 + +start_line_3: + /* load error code */ + mov x0, #ERROR_DDR_SLEEP + b 2f +5: + wfe + ldr w1, [x23, #EPU_EPCTR10_OFFSET] + cbz w1, 5b + + mov w4, w5 +touch_line_3: + cbz x0, touch_line_4 + +start_line_4: + /* re-enable ddr in devdisr5 */ + str w4, [x8, x22] + /* re-enable ddr clk in ipstpcr4 */ + str w4, [x7, x10] +13: + /* poll on ipstpack4 - start */ + ldr w1, [x7, x11] + tst w1, w3 + b.eq 2f + nop + b 13b + /* poll on ipstpack4 - end */ +2: +touch_line_4: + cbz x0, touch_line_5 + +start_line_5: + /* take ddr out-of self refresh - start */ + mov x2, #DDR_SDRAM_CFG_2_FRCSR + ldr w3, [x6, #DDR_SDRAM_CFG_2_OFFSET] + mov w4, w3 + bic w4, w4, w2 + mov w3, w4 + /* wait for ddr cntrlr clock- start */ + mov x1, #DDR_SLEEP_RETRY_CNT +3: + subs x1, x1, #1 +touch_line_5: + cbz x0, touch_line_6 + +start_line_6: + /* wait for ddr cntrlr clock - end */ + b.gt 3b + /* take ddr out-of self refresh - end */ + str w3, [x6, #DDR_SDRAM_CFG_2_OFFSET] + mov w1, w17 + /* reset devdisr5 */ + str w1, [x8, #DCFG_DEVDISR5_OFFSET] + mov w1, w16 + /* reset devdisr4 */ + str w1, [x8, #DCFG_DEVDISR4_OFFSET] + mov w1, w15 +touch_line_6: + cbz x0, touch_line_7 + +start_line_7: + /* reset devdisr3 */ + str w1, [x8, #DCFG_DEVDISR3_OFFSET] + mov w1, w14 + /* reset devdisr2 */ + str w1, [x8, #DCFG_DEVDISR2_OFFSET] + mov w1, w13 + /* reset devdisr1 */ + str w1, [x8, #DCFG_DEVDISR1_OFFSET] + /* reset ipstpcr4 */ + str wzr, [x7, x10] + /* reset ipstpcr3 */ + str wzr, [x7, x12] +touch_line_7: + cbz x0, touch_line_8 + +start_line_8: + /* reset ipstpcr2 */ + str wzr, [x7, x18] + /* reset ipstpcr1 */ + str wzr, [x7, x19] + /* reset ipstpcr0 */ + str wzr, [x7, x21] + +touch_line_8: + cbz x0, touch_line_9 + +start_line_9: + b continue_restart +touch_line_9: + cbz x0, start_line_0 + +/* execute here after ddr is back up */ +continue_restart: + /* + * if x0 = 1, all is well + * if x0 < 1, we had an error + */ + cmp x0, #1 + b.ne 4f + mov x0, #0 +4: + ret |