Author: scottph Date: Wed Aug 26 02:12:15 2020 New Revision: 364797 URL: https://svnweb.freebsd.org/changeset/base/364797
Log: arm64/acpi: Give the real PA limit to ACPI Read PA bits from ID_AA64MMFR0_EL1.PARange. Reviewed by: andrew, markj Approved by: scottl (implicit) MFC after: 1 week Sponsored by: Ampere Computing, Inc. Differential Revision: https://reviews.freebsd.org/D26133 Modified: head/sys/arm64/acpica/acpi_machdep.c head/sys/arm64/arm64/identcpu.c Modified: head/sys/arm64/acpica/acpi_machdep.c ============================================================================== --- head/sys/arm64/acpica/acpi_machdep.c Wed Aug 26 02:07:46 2020 (r364796) +++ head/sys/arm64/acpica/acpi_machdep.c Wed Aug 26 02:12:15 2020 (r364797) @@ -232,12 +232,47 @@ acpi_map_addr(struct acpi_generic_address *addr, bus_s static void parse_pxm_tables(void *dummy) { + uint64_t mmfr0, parange; /* Only parse ACPI tables when booting via ACPI */ if (arm64_bus_method != ARM64_BUS_ACPI) return; - acpi_pxm_init(MAXCPU, (vm_paddr_t)1 << 40); + if (!get_kernel_reg(ID_AA64MMFR0_EL1, &mmfr0)) { + /* chosen arbitrarily */ + mmfr0 = ID_AA64MMFR0_PARange_1T; + } + + switch (ID_AA64MMFR0_PARange_VAL(mmfr0)) { + case ID_AA64MMFR0_PARange_4G: + parange = (vm_paddr_t)4 << 30 /* GiB */; + break; + case ID_AA64MMFR0_PARange_64G: + parange = (vm_paddr_t)64 << 30 /* GiB */; + break; + case ID_AA64MMFR0_PARange_1T: + parange = (vm_paddr_t)1 << 40 /* TiB */; + break; + case ID_AA64MMFR0_PARange_4T: + parange = (vm_paddr_t)4 << 40 /* TiB */; + break; + case ID_AA64MMFR0_PARange_16T: + parange = (vm_paddr_t)16 << 40 /* TiB */; + break; + case ID_AA64MMFR0_PARange_256T: + parange = (vm_paddr_t)256 << 40 /* TiB */; + break; + case ID_AA64MMFR0_PARange_4P: + parange = (vm_paddr_t)4 << 50 /* PiB */; + break; + default: + /* chosen arbitrarily */ + parange = (vm_paddr_t)1 << 40 /* TiB */; + printf("Unknown value for PARange in mmfr0 (%#lx)\n", mmfr0); + break; + } + + acpi_pxm_init(MAXCPU, parange); acpi_pxm_parse_tables(); acpi_pxm_set_mem_locality(); } Modified: head/sys/arm64/arm64/identcpu.c ============================================================================== --- head/sys/arm64/arm64/identcpu.c Wed Aug 26 02:07:46 2020 (r364796) +++ head/sys/arm64/arm64/identcpu.c Wed Aug 26 02:12:15 2020 (r364797) @@ -916,6 +916,13 @@ static struct mrs_user_reg user_regs[] = { .offset = __offsetof(struct cpu_desc, id_aa64dfr0), .fields = id_aa64dfr0_fields, }, + { /* id_aa64mmfr0_el1 */ + .reg = ID_AA64MMFR0_EL1, + .CRm = 7, + .Op2 = 0, + .offset = __offsetof(struct cpu_desc, id_aa64mmfr0), + .fields = id_aa64mmfr0_fields, + }, }; #define CPU_DESC_FIELD(desc, idx) \ _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
