| /* |
| * Copyright (c) 2022, ARM Limited. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <common/bl_common.h> |
| #include <cortex_a510.h> |
| #include <cpu_macros.S> |
| #include <plat_macros.S> |
| |
| /* Hardware handled coherency */ |
| #if HW_ASSISTED_COHERENCY == 0 |
| #error "Cortex-A510 must be compiled with HW_ASSISTED_COHERENCY enabled" |
| #endif |
| |
| /* 64-bit only core */ |
| #if CTX_INCLUDE_AARCH32_REGS == 1 |
| #error "Cortex-A510 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0" |
| #endif |
| |
| /* -------------------------------------------------- |
| * Errata Workaround for Cortex-A510 Errata #1922240. |
| * This applies only to revision r0p0 (fixed in r0p1) |
| * x0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: x0, x1, x17 |
| * -------------------------------------------------- |
| */ |
| func errata_cortex_a510_1922240_wa |
| /* Check workaround compatibility. */ |
| mov x17, x30 |
| bl check_errata_1922240 |
| cbz x0, 1f |
| |
| /* Apply the workaround by setting IMP_CMPXACTLR_EL1[11:10] = 0b11. */ |
| mrs x0, CORTEX_A510_CMPXACTLR_EL1 |
| mov x1, #3 |
| bfi x0, x1, #10, #2 |
| msr CORTEX_A510_CMPXACTLR_EL1, x0 |
| |
| 1: |
| ret x17 |
| endfunc errata_cortex_a510_1922240_wa |
| |
| func check_errata_1922240 |
| /* Applies to r0p0 only */ |
| mov x1, #0x00 |
| b cpu_rev_var_ls |
| endfunc check_errata_1922240 |
| |
| /* -------------------------------------------------- |
| * Errata Workaround for Cortex-A510 Errata #2288014. |
| * This applies only to revisions r0p0, r0p1, r0p2, |
| * r0p3 and r1p0. (fixed in r1p1) |
| * x0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: x0, x1, x17 |
| * -------------------------------------------------- |
| */ |
| func errata_cortex_a510_2288014_wa |
| /* Check workaround compatibility. */ |
| mov x17, x30 |
| bl check_errata_2288014 |
| cbz x0, 1f |
| |
| /* Apply the workaround by setting IMP_CPUACTLR_EL1[18] = 0b1. */ |
| mrs x0, CORTEX_A510_CPUACTLR_EL1 |
| mov x1, #1 |
| bfi x0, x1, #18, #1 |
| msr CORTEX_A510_CPUACTLR_EL1, x0 |
| |
| 1: |
| ret x17 |
| endfunc errata_cortex_a510_2288014_wa |
| |
| func check_errata_2288014 |
| /* Applies to r1p0 and below */ |
| mov x1, #0x10 |
| b cpu_rev_var_ls |
| endfunc check_errata_2288014 |
| |
| /* ---------------------------------------------------- |
| * HW will do the cache maintenance while powering down |
| * ---------------------------------------------------- |
| */ |
| func cortex_a510_core_pwr_dwn |
| /* --------------------------------------------------- |
| * Enable CPU power down bit in power control register |
| * --------------------------------------------------- |
| */ |
| mrs x0, CORTEX_A510_CPUPWRCTLR_EL1 |
| orr x0, x0, #CORTEX_A510_CPUPWRCTLR_EL1_CORE_PWRDN_BIT |
| msr CORTEX_A510_CPUPWRCTLR_EL1, x0 |
| isb |
| ret |
| endfunc cortex_a510_core_pwr_dwn |
| |
| /* |
| * Errata printing function for Cortex-A510. Must follow AAPCS. |
| */ |
| #if REPORT_ERRATA |
| func cortex_a510_errata_report |
| stp x8, x30, [sp, #-16]! |
| |
| bl cpu_get_rev_var |
| mov x8, x0 |
| |
| /* |
| * Report all errata. The revision-variant information is passed to |
| * checking functions of each errata. |
| */ |
| report_errata ERRATA_A510_1922240, cortex_a510, 1922240 |
| report_errata ERRATA_A510_2288014, cortex_a510, 2288014 |
| |
| ldp x8, x30, [sp], #16 |
| ret |
| endfunc cortex_a510_errata_report |
| #endif |
| |
| func cortex_a510_reset_func |
| mov x19, x30 |
| |
| /* Disable speculative loads */ |
| msr SSBS, xzr |
| isb |
| |
| /* Get the CPU revision and stash it in x18. */ |
| bl cpu_get_rev_var |
| mov x18, x0 |
| |
| #if ERRATA_A510_1922240 |
| mov x0, x18 |
| bl errata_cortex_a510_1922240_wa |
| #endif |
| |
| #if ERRATA_A510_2288014 |
| mov x0, x18 |
| bl errata_cortex_a510_2288014_wa |
| #endif |
| |
| ret x19 |
| endfunc cortex_a510_reset_func |
| |
| /* --------------------------------------------- |
| * This function provides Cortex-A510 specific |
| * register information for crash reporting. |
| * It needs to return with x6 pointing to |
| * a list of register names in ascii and |
| * x8 - x15 having values of registers to be |
| * reported. |
| * --------------------------------------------- |
| */ |
| .section .rodata.cortex_a510_regs, "aS" |
| cortex_a510_regs: /* The ascii list of register names to be reported */ |
| .asciz "cpuectlr_el1", "" |
| |
| func cortex_a510_cpu_reg_dump |
| adr x6, cortex_a510_regs |
| mrs x8, CORTEX_A510_CPUECTLR_EL1 |
| ret |
| endfunc cortex_a510_cpu_reg_dump |
| |
| declare_cpu_ops cortex_a510, CORTEX_A510_MIDR, \ |
| cortex_a510_reset_func, \ |
| cortex_a510_core_pwr_dwn |