diff options
Diffstat (limited to 'lib/cpus/aarch64/neoverse_v1.S')
| -rw-r--r-- | lib/cpus/aarch64/neoverse_v1.S | 295 |
1 files changed, 293 insertions, 2 deletions
diff --git a/lib/cpus/aarch64/neoverse_v1.S b/lib/cpus/aarch64/neoverse_v1.S index 733629425..0bcf52a78 100644 --- a/lib/cpus/aarch64/neoverse_v1.S +++ b/lib/cpus/aarch64/neoverse_v1.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2019-2020, ARM Limited. All rights reserved. + * Copyright (c) 2019-2021, Arm Limited. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -21,6 +21,244 @@ #error "Neoverse-V1 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0" #endif + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Errata #1774420. + * This applies to revisions r0p0 and r1p0, fixed in r1p1. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_1774420_wa + /* Check workaround compatibility. */ + mov x17, x30 + bl check_errata_1774420 + cbz x0, 1f + + /* Set bit 53 in CPUECTLR_EL1 */ + mrs x1, NEOVERSE_V1_CPUECTLR_EL1 + orr x1, x1, #NEOVERSE_V1_CPUECTLR_EL1_BIT_53 + msr NEOVERSE_V1_CPUECTLR_EL1, x1 + isb +1: + ret x17 +endfunc errata_neoverse_v1_1774420_wa + +func check_errata_1774420 + /* Applies to r0p0 and r1p0. */ + mov x1, #0x10 + b cpu_rev_var_ls +endfunc check_errata_1774420 + + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Errata #1791573. + * This applies to revisions r0p0 and r1p0, fixed in r1p1. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_1791573_wa + /* Check workaround compatibility. */ + mov x17, x30 + bl check_errata_1791573 + cbz x0, 1f + + /* Set bit 2 in ACTLR2_EL1 */ + mrs x1, NEOVERSE_V1_ACTLR2_EL1 + orr x1, x1, #NEOVERSE_V1_ACTLR2_EL1_BIT_2 + msr NEOVERSE_V1_ACTLR2_EL1, x1 + isb +1: + ret x17 +endfunc errata_neoverse_v1_1791573_wa + +func check_errata_1791573 + /* Applies to r0p0 and r1p0. */ + mov x1, #0x10 + b cpu_rev_var_ls +endfunc check_errata_1791573 + + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Errata #1852267. + * This applies to revisions r0p0 and r1p0, fixed in r1p1. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_1852267_wa + /* Check workaround compatibility. */ + mov x17, x30 + bl check_errata_1852267 + cbz x0, 1f + + /* Set bit 28 in ACTLR2_EL1 */ + mrs x1, NEOVERSE_V1_ACTLR2_EL1 + orr x1, x1, #NEOVERSE_V1_ACTLR2_EL1_BIT_28 + msr NEOVERSE_V1_ACTLR2_EL1, x1 + isb +1: + ret x17 +endfunc errata_neoverse_v1_1852267_wa + +func check_errata_1852267 + /* Applies to r0p0 and r1p0. */ + mov x1, #0x10 + b cpu_rev_var_ls +endfunc check_errata_1852267 + + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Errata #1925756. + * This applies to revisions <= r1p1. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_1925756_wa + /* Check workaround compatibility. */ + mov x17, x30 + bl check_errata_1925756 + cbz x0, 1f + + /* Set bit 8 in CPUECTLR_EL1 */ + mrs x1, NEOVERSE_V1_CPUECTLR_EL1 + orr x1, x1, #NEOVERSE_V1_CPUECTLR_EL1_BIT_8 + msr NEOVERSE_V1_CPUECTLR_EL1, x1 + isb +1: + ret x17 +endfunc errata_neoverse_v1_1925756_wa + +func check_errata_1925756 + /* Applies to <= r1p1. */ + mov x1, #0x11 + b cpu_rev_var_ls +endfunc check_errata_1925756 + + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Erratum #1940577 + * This applies to revisions r1p0 - r1p1 and is open. + * It also exists in r0p0 but there is no fix in that + * revision. + * Inputs: + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_1940577_wa + /* Compare x0 against revisions r1p0 - r1p1 */ + mov x17, x30 + bl check_errata_1940577 + cbz x0, 1f + + mov x0, #0 + msr S3_6_C15_C8_0, x0 + ldr x0, =0x10E3900002 + msr S3_6_C15_C8_2, x0 + ldr x0, =0x10FFF00083 + msr S3_6_C15_C8_3, x0 + ldr x0, =0x2001003FF + msr S3_6_C15_C8_1, x0 + + mov x0, #1 + msr S3_6_C15_C8_0, x0 + ldr x0, =0x10E3800082 + msr S3_6_C15_C8_2, x0 + ldr x0, =0x10FFF00083 + msr S3_6_C15_C8_3, x0 + ldr x0, =0x2001003FF + msr S3_6_C15_C8_1, x0 + + mov x0, #2 + msr S3_6_C15_C8_0, x0 + ldr x0, =0x10E3800200 + msr S3_6_C15_C8_2, x0 + ldr x0, =0x10FFF003E0 + msr S3_6_C15_C8_3, x0 + ldr x0, =0x2001003FF + msr S3_6_C15_C8_1, x0 + + isb +1: + ret x17 +endfunc errata_neoverse_v1_1940577_wa + +func check_errata_1940577 + /* Applies to revisions r1p0 - r1p1. */ + mov x1, #0x10 + mov x2, #0x11 + b cpu_rev_var_range +endfunc check_errata_1940577 + + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Errata #1966096 + * This applies to revisions r1p0 - r1p1 and is open. + * It also exists in r0p0 but there is no workaround + * for that revision. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_1966096_wa + /* Check workaround compatibility. */ + mov x17, x30 + bl check_errata_1966096 + cbz x0, 1f + + /* Apply the workaround. */ + mov x0, #0x3 + msr S3_6_C15_C8_0, x0 + ldr x0, =0xEE010F12 + msr S3_6_C15_C8_2, x0 + ldr x0, =0xFFFF0FFF + msr S3_6_C15_C8_3, x0 + ldr x0, =0x80000000003FF + msr S3_6_C15_C8_1, x0 + isb + +1: + ret x17 +endfunc errata_neoverse_v1_1966096_wa + +func check_errata_1966096 + mov x1, #0x10 + mov x2, #0x11 + b cpu_rev_var_range +endfunc check_errata_1966096 + + /* -------------------------------------------------- + * Errata Workaround for Neoverse V1 Errata #2139242. + * This applies to revisions r0p0, r1p0, and r1p1, it + * is still open. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------- + */ +func errata_neoverse_v1_2139242_wa + /* Check workaround compatibility. */ + mov x17, x30 + bl check_errata_2139242 + cbz x0, 1f + + /* Apply the workaround. */ + mov x0, #0x3 + msr S3_6_C15_C8_0, x0 + ldr x0, =0xEE720F14 + msr S3_6_C15_C8_2, x0 + ldr x0, =0xFFFF0FDF + msr S3_6_C15_C8_3, x0 + ldr x0, =0x40000005003FF + msr S3_6_C15_C8_1, x0 + isb + +1: + ret x17 +endfunc errata_neoverse_v1_2139242_wa + +func check_errata_2139242 + /* Applies to r0p0, r1p0, r1p1 */ + mov x1, #0x11 + b cpu_rev_var_ls +endfunc check_errata_2139242 + /* --------------------------------------------- * HW will do the cache maintenance while powering down * --------------------------------------------- @@ -42,6 +280,24 @@ endfunc neoverse_v1_core_pwr_dwn */ #if REPORT_ERRATA func neoverse_v1_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_V1_1774420, neoverse_v1, 1774420 + report_errata ERRATA_V1_1791573, neoverse_v1, 1791573 + report_errata ERRATA_V1_1852267, neoverse_v1, 1852267 + report_errata ERRATA_V1_1925756, neoverse_v1, 1925756 + report_errata ERRATA_V1_1940577, neoverse_v1, 1940577 + report_errata ERRATA_V1_1966096, neoverse_v1, 1966096 + report_errata ERRATA_V1_2139242, neoverse_v1, 2139242 + + ldp x8, x30, [sp], #16 ret endfunc neoverse_v1_errata_report #endif @@ -51,8 +307,43 @@ func neoverse_v1_reset_func /* Disable speculative loads */ msr SSBS, xzr - isb + +#if ERRATA_V1_1774420 + mov x0, x18 + bl errata_neoverse_v1_1774420_wa +#endif + +#if ERRATA_V1_1791573 + mov x0, x18 + bl errata_neoverse_v1_1791573_wa +#endif + +#if ERRATA_V1_1852267 + mov x0, x18 + bl errata_neoverse_v1_1852267_wa +#endif + +#if ERRATA_V1_1925756 + mov x0, x18 + bl errata_neoverse_v1_1925756_wa +#endif + +#if ERRATA_V1_1940577 + mov x0, x18 + bl errata_neoverse_v1_1940577_wa +#endif + +#if ERRATA_V1_1966096 + mov x0, x18 + bl errata_neoverse_v1_1966096_wa +#endif + +#if ERRATA_V1_2139242 + mov x0, x18 + bl errata_neoverse_v1_2139242_wa +#endif + ret x19 endfunc neoverse_v1_reset_func |