x86, microcode: Move to a proper location

We've grown a bunch of microcode loader files all prefixed with
"microcode_". They should be under cpu/ because this is strictly
CPU-related functionality so do that and drop the prefix since they're
in their own directory now which gives that prefix. :)

While at it, drop MICROCODE_INTEL_LIB config item and stash the
functionality under CONFIG_MICROCODE_INTEL as it was its only user.

Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>

1 files changed, 0 insertions, 333 deletions

diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c
deleted file mode 100644
index 5fb2cebf556b..000000000000
--- a/arch/x86/kernel/microcode_intel.c
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- *	Intel CPU Microcode Update Driver for Linux
- *
- *	Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
- *		      2006	Shaohua Li <shaohua.li@intel.com>
- *
- *	This driver allows to upgrade microcode on Intel processors
- *	belonging to IA-32 family - PentiumPro, Pentium II,
- *	Pentium III, Xeon, Pentium 4, etc.
- *
- *	Reference: Section 8.11 of Volume 3a, IA-32 Intel? Architecture
- *	Software Developer's Manual
- *	Order Number 253668 or free download from:
- *
- *	http://developer.intel.com/Assets/PDF/manual/253668.pdf	
- *
- *	For more information, go to http://www.urbanmyth.org/microcode
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- *	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
- *	1.0	16 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Initial release.
- *	1.01	18 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Added read() support + cleanups.
- *	1.02	21 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Added 'device trimming' support. open(O_WRONLY) zeroes
- *		and frees the saved copy of applied microcode.
- *	1.03	29 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Made to use devfs (/dev/cpu/microcode) + cleanups.
- *	1.04	06 Jun 2000, Simon Trimmer <simon@veritas.com>
- *		Added misc device support (now uses both devfs and misc).
- *		Added MICROCODE_IOCFREE ioctl to clear memory.
- *	1.05	09 Jun 2000, Simon Trimmer <simon@veritas.com>
- *		Messages for error cases (non Intel & no suitable microcode).
- *	1.06	03 Aug 2000, Tigran Aivazian <tigran@veritas.com>
- *		Removed ->release(). Removed exclusive open and status bitmap.
- *		Added microcode_rwsem to serialize read()/write()/ioctl().
- *		Removed global kernel lock usage.
- *	1.07	07 Sep 2000, Tigran Aivazian <tigran@veritas.com>
- *		Write 0 to 0x8B msr and then cpuid before reading revision,
- *		so that it works even if there were no update done by the
- *		BIOS. Otherwise, reading from 0x8B gives junk (which happened
- *		to be 0 on my machine which is why it worked even when I
- *		disabled update by the BIOS)
- *		Thanks to Eric W. Biederman <ebiederman@lnxi.com> for the fix.
- *	1.08	11 Dec 2000, Richard Schaal <richard.schaal@intel.com> and
- *			     Tigran Aivazian <tigran@veritas.com>
- *		Intel Pentium 4 processor support and bugfixes.
- *	1.09	30 Oct 2001, Tigran Aivazian <tigran@veritas.com>
- *		Bugfix for HT (Hyper-Threading) enabled processors
- *		whereby processor resources are shared by all logical processors
- *		in a single CPU package.
- *	1.10	28 Feb 2002 Asit K Mallick <asit.k.mallick@intel.com> and
- *		Tigran Aivazian <tigran@veritas.com>,
- *		Serialize updates as required on HT processors due to
- *		speculative nature of implementation.
- *	1.11	22 Mar 2002 Tigran Aivazian <tigran@veritas.com>
- *		Fix the panic when writing zero-length microcode chunk.
- *	1.12	29 Sep 2003 Nitin Kamble <nitin.a.kamble@intel.com>,
- *		Jun Nakajima <jun.nakajima@intel.com>
- *		Support for the microcode updates in the new format.
- *	1.13	10 Oct 2003 Tigran Aivazian <tigran@veritas.com>
- *		Removed ->read() method and obsoleted MICROCODE_IOCFREE ioctl
- *		because we no longer hold a copy of applied microcode
- *		in kernel memory.
- *	1.14	25 Jun 2004 Tigran Aivazian <tigran@veritas.com>
- *		Fix sigmatch() macro to handle old CPUs with pf == 0.
- *		Thanks to Stuart Swales for pointing out this bug.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/firmware.h>
-#include <linux/uaccess.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/vmalloc.h>
-
-#include <asm/microcode_intel.h>
-#include <asm/processor.h>
-#include <asm/msr.h>
-
-MODULE_DESCRIPTION("Microcode Update Driver");
-MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
-MODULE_LICENSE("GPL");
-
-static int collect_cpu_info(int cpu_num, struct cpu_signature *csig)
-{
-	struct cpuinfo_x86 *c = &cpu_data(cpu_num);
-	unsigned int val[2];
-
-	memset(csig, 0, sizeof(*csig));
-
-	csig->sig = cpuid_eax(0x00000001);
-
-	if ((c->x86_model >= 5) || (c->x86 > 6)) {
-		/* get processor flags from MSR 0x17 */
-		rdmsr(MSR_IA32_PLATFORM_ID, val[0], val[1]);
-		csig->pf = 1 << ((val[1] >> 18) & 7);
-	}
-
-	csig->rev = c->microcode;
-	pr_info("CPU%d sig=0x%x, pf=0x%x, revision=0x%x\n",
-		cpu_num, csig->sig, csig->pf, csig->rev);
-
-	return 0;
-}
-
-/*
- * return 0 - no update found
- * return 1 - found update
- */
-static int get_matching_mc(struct microcode_intel *mc_intel, int cpu)
-{
-	struct cpu_signature cpu_sig;
-	unsigned int csig, cpf, crev;
-
-	collect_cpu_info(cpu, &cpu_sig);
-
-	csig = cpu_sig.sig;
-	cpf = cpu_sig.pf;
-	crev = cpu_sig.rev;
-
-	return get_matching_microcode(csig, cpf, mc_intel, crev);
-}
-
-int apply_microcode(int cpu)
-{
-	struct microcode_intel *mc_intel;
-	struct ucode_cpu_info *uci;
-	unsigned int val[2];
-	int cpu_num = raw_smp_processor_id();
-	struct cpuinfo_x86 *c = &cpu_data(cpu_num);
-
-	uci = ucode_cpu_info + cpu;
-	mc_intel = uci->mc;
-
-	/* We should bind the task to the CPU */
-	BUG_ON(cpu_num != cpu);
-
-	if (mc_intel == NULL)
-		return 0;
-
-	/*
-	 * Microcode on this CPU could be updated earlier. Only apply the
-	 * microcode patch in mc_intel when it is newer than the one on this
-	 * CPU.
-	 */
-	if (get_matching_mc(mc_intel, cpu) == 0)
-		return 0;
-
-	/* write microcode via MSR 0x79 */
-	wrmsr(MSR_IA32_UCODE_WRITE,
-	      (unsigned long) mc_intel->bits,
-	      (unsigned long) mc_intel->bits >> 16 >> 16);
-	wrmsr(MSR_IA32_UCODE_REV, 0, 0);
-
-	/* As documented in the SDM: Do a CPUID 1 here */
-	sync_core();
-
-	/* get the current revision from MSR 0x8B */
-	rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
-
-	if (val[1] != mc_intel->hdr.rev) {
-		pr_err("CPU%d update to revision 0x%x failed\n",
-		       cpu_num, mc_intel->hdr.rev);
-		return -1;
-	}
-	pr_info("CPU%d updated to revision 0x%x, date = %04x-%02x-%02x\n",
-		cpu_num, val[1],
-		mc_intel->hdr.date & 0xffff,
-		mc_intel->hdr.date >> 24,
-		(mc_intel->hdr.date >> 16) & 0xff);
-
-	uci->cpu_sig.rev = val[1];
-	c->microcode = val[1];
-
-	return 0;
-}
-
-static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,
-				int (*get_ucode_data)(void *, const void *, size_t))
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	u8 *ucode_ptr = data, *new_mc = NULL, *mc = NULL;
-	int new_rev = uci->cpu_sig.rev;
-	unsigned int leftover = size;
-	enum ucode_state state = UCODE_OK;
-	unsigned int curr_mc_size = 0;
-	unsigned int csig, cpf;
-
-	while (leftover) {
-		struct microcode_header_intel mc_header;
-		unsigned int mc_size;
-
-		if (get_ucode_data(&mc_header, ucode_ptr, sizeof(mc_header)))
-			break;
-
-		mc_size = get_totalsize(&mc_header);
-		if (!mc_size || mc_size > leftover) {
-			pr_err("error! Bad data in microcode data file\n");
-			break;
-		}
-
-		/* For performance reasons, reuse mc area when possible */
-		if (!mc || mc_size > curr_mc_size) {
-			vfree(mc);
-			mc = vmalloc(mc_size);
-			if (!mc)
-				break;
-			curr_mc_size = mc_size;
-		}
-
-		if (get_ucode_data(mc, ucode_ptr, mc_size) ||
-		    microcode_sanity_check(mc, 1) < 0) {
-			break;
-		}
-
-		csig = uci->cpu_sig.sig;
-		cpf = uci->cpu_sig.pf;
-		if (get_matching_microcode(csig, cpf, mc, new_rev)) {
-			vfree(new_mc);
-			new_rev = mc_header.rev;
-			new_mc  = mc;
-			mc = NULL;	/* trigger new vmalloc */
-		}
-
-		ucode_ptr += mc_size;
-		leftover  -= mc_size;
-	}
-
-	vfree(mc);
-
-	if (leftover) {
-		vfree(new_mc);
-		state = UCODE_ERROR;
-		goto out;
-	}
-
-	if (!new_mc) {
-		state = UCODE_NFOUND;
-		goto out;
-	}
-
-	vfree(uci->mc);
-	uci->mc = (struct microcode_intel *)new_mc;
-
-	/*
-	 * If early loading microcode is supported, save this mc into
-	 * permanent memory. So it will be loaded early when a CPU is hot added
-	 * or resumes.
-	 */
-	save_mc_for_early(new_mc);
-
-	pr_debug("CPU%d found a matching microcode update with version 0x%x (current=0x%x)\n",
-		 cpu, new_rev, uci->cpu_sig.rev);
-out:
-	return state;
-}
-
-static int get_ucode_fw(void *to, const void *from, size_t n)
-{
-	memcpy(to, from, n);
-	return 0;
-}
-
-static enum ucode_state request_microcode_fw(int cpu, struct device *device,
-					     bool refresh_fw)
-{
-	char name[30];
-	struct cpuinfo_x86 *c = &cpu_data(cpu);
-	const struct firmware *firmware;
-	enum ucode_state ret;
-
-	sprintf(name, "intel-ucode/%02x-%02x-%02x",
-		c->x86, c->x86_model, c->x86_mask);
-
-	if (request_firmware(&firmware, name, device)) {
-		pr_debug("data file %s load failed\n", name);
-		return UCODE_NFOUND;
-	}
-
-	ret = generic_load_microcode(cpu, (void *)firmware->data,
-				     firmware->size, &get_ucode_fw);
-
-	release_firmware(firmware);
-
-	return ret;
-}
-
-static int get_ucode_user(void *to, const void *from, size_t n)
-{
-	return copy_from_user(to, from, n);
-}
-
-static enum ucode_state
-request_microcode_user(int cpu, const void __user *buf, size_t size)
-{
-	return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user);
-}
-
-static void microcode_fini_cpu(int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	vfree(uci->mc);
-	uci->mc = NULL;
-}
-
-static struct microcode_ops microcode_intel_ops = {
-	.request_microcode_user		  = request_microcode_user,
-	.request_microcode_fw             = request_microcode_fw,
-	.collect_cpu_info                 = collect_cpu_info,
-	.apply_microcode                  = apply_microcode,
-	.microcode_fini_cpu               = microcode_fini_cpu,
-};
-
-struct microcode_ops * __init init_intel_microcode(void)
-{
-	struct cpuinfo_x86 *c = &cpu_data(0);
-
-	if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
-	    cpu_has(c, X86_FEATURE_IA64)) {
-		pr_err("Intel CPU family 0x%x not supported\n", c->x86);
-		return NULL;
-	}
-
-	return &microcode_intel_ops;
-}
-