diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-08-13 09:25:12 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2019-08-16 14:32:26 -0700 |
| commit | df41017eafd267c08acbfff99d34e4f96bbfbc92 (patch) | |
| tree | 6c6147f0ecc52dbf1ea066ba739a83ad0526712a /arch/ia64/uv | |
| parent | a8384e6ce5231d4f697f2dca1de4ff6bed7f3890 (diff) | |
| download | linux-df41017eafd267c08acbfff99d34e4f96bbfbc92.tar.bz2 | |
ia64: remove support for machvecs
The only thing remaining of the machvecs is a few checks if we are
running on an SGI UV system. Replace those with the existing
is_uv_system() check that has been rewritten to simply check the
OEM ID directly.
That leaves us with a generic kernel that is as fast as the previous
DIG/ZX1/UV kernels, but can support all hardware. Support for UV
and the HP SBA IOMMU is now optional based on new config options.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-27-hch@lst.de
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/uv')
| -rw-r--r-- | arch/ia64/uv/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/ia64/uv/kernel/machvec.c | 11 | ||||
| -rw-r--r-- | arch/ia64/uv/kernel/setup.c | 34 |
3 files changed, 34 insertions, 12 deletions
diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile index 124e441d383d..297196578d19 100644 --- a/arch/ia64/uv/kernel/Makefile +++ b/arch/ia64/uv/kernel/Makefile @@ -10,4 +10,3 @@ ccflags-y := -Iarch/ia64/sn/include obj-y += setup.o -obj-$(CONFIG_IA64_GENERIC) += machvec.o diff --git a/arch/ia64/uv/kernel/machvec.c b/arch/ia64/uv/kernel/machvec.c deleted file mode 100644 index 50737a9dca74..000000000000 --- a/arch/ia64/uv/kernel/machvec.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. - */ - -#define MACHVEC_PLATFORM_NAME uv -#define MACHVEC_PLATFORM_HEADER <asm/machvec_uv.h> -#include <asm/machvec_init.h> diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c index b081f5138f5c..bb025486d791 100644 --- a/arch/ia64/uv/kernel/setup.c +++ b/arch/ia64/uv/kernel/setup.c @@ -8,11 +8,17 @@ * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved. */ +#include <linux/acpi.h> +#include <linux/efi.h> #include <linux/module.h> #include <linux/percpu.h> +#include <asm/uv/uv.h> #include <asm/uv/uv_mmrs.h> #include <asm/uv/uv_hub.h> +bool ia64_is_uv; +EXPORT_SYMBOL_GPL(ia64_is_uv); + DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info); EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info); @@ -47,6 +53,34 @@ static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size) BUG(); } +void __init uv_probe_system_type(void) +{ + struct acpi_table_rsdp *rsdp; + struct acpi_table_xsdt *xsdt; + + if (efi.acpi20 == EFI_INVALID_TABLE_ADDR) { + pr_err("ACPI 2.0 RSDP not found.\n"); + return; + } + + rsdp = (struct acpi_table_rsdp *)__va(efi.acpi20); + if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { + pr_err("ACPI 2.0 RSDP signature incorrect.\n"); + return; + } + + xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); + if (strncmp(xsdt->header.signature, ACPI_SIG_XSDT, + sizeof(ACPI_SIG_XSDT) - 1)) { + pr_err("ACPI 2.0 XSDT signature incorrect.\n"); + return; + } + + if (!strcmp(xsdt->header.oem_id, "SGI") && + !strcmp(xsdt->header.oem_table_id + 4, "UV")) + ia64_is_uv = true; +} + void __init uv_setup(char **cmdline_p) { union uvh_si_addr_map_config_u m_n_config; |