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-rw-r--r--arch/x86/kernel/Makefile8
-rw-r--r--arch/x86/kernel/microcode_amd.c72
-rw-r--r--arch/x86/kernel/microcode_core.c (renamed from arch/x86/kernel/microcode.c)26
-rw-r--r--arch/x86/kernel/microcode_intel.c79
4 files changed, 112 insertions, 73 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index be454f348c3..f891996f684 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -51,9 +51,6 @@ obj-$(CONFIG_X86_BIOS_REBOOT) += reboot.o
obj-$(CONFIG_MCA) += mca_32.o
obj-$(CONFIG_X86_MSR) += msr.o
obj-$(CONFIG_X86_CPUID) += cpuid.o
-obj-$(CONFIG_MICROCODE) += microcode.o
-obj-$(CONFIG_MICROCODE_INTEL) += microcode_intel.o
-obj-$(CONFIG_MICROCODE_AMD) += microcode_amd.o
obj-$(CONFIG_PCI) += early-quirks.o
apm-y := apm_32.o
obj-$(CONFIG_APM) += apm.o
@@ -101,6 +98,11 @@ scx200-y += scx200_32.o
obj-$(CONFIG_OLPC) += olpc.o
+microcode-y := microcode_core.o
+microcode-$(CONFIG_MICROCODE_INTEL) += microcode_intel.o
+microcode-$(CONFIG_MICROCODE_AMD) += microcode_amd.o
+obj-$(CONFIG_MICROCODE) += microcode.o
+
###
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index 48aec9f48e4..03ea4e52e87 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -46,6 +46,35 @@ MODULE_LICENSE("GPL v2");
#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000
#define UCODE_UCODE_TYPE 0x00000001
+struct equiv_cpu_entry {
+ unsigned int installed_cpu;
+ unsigned int fixed_errata_mask;
+ unsigned int fixed_errata_compare;
+ unsigned int equiv_cpu;
+};
+
+struct microcode_header_amd {
+ unsigned int data_code;
+ unsigned int patch_id;
+ unsigned char mc_patch_data_id[2];
+ unsigned char mc_patch_data_len;
+ unsigned char init_flag;
+ unsigned int mc_patch_data_checksum;
+ unsigned int nb_dev_id;
+ unsigned int sb_dev_id;
+ unsigned char processor_rev_id[2];
+ unsigned char nb_rev_id;
+ unsigned char sb_rev_id;
+ unsigned char bios_api_rev;
+ unsigned char reserved1[3];
+ unsigned int match_reg[8];
+};
+
+struct microcode_amd {
+ struct microcode_header_amd hdr;
+ unsigned int mpb[0];
+};
+
#define UCODE_MAX_SIZE (2048)
#define DEFAULT_UCODE_DATASIZE (896)
#define MC_HEADER_SIZE (sizeof(struct microcode_header_amd))
@@ -189,17 +218,18 @@ static void apply_microcode_amd(int cpu)
unsigned int rev;
int cpu_num = raw_smp_processor_id();
struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
+ struct microcode_amd *mc_amd = uci->mc;
unsigned long addr;
/* We should bind the task to the CPU */
BUG_ON(cpu_num != cpu);
- if (uci->mc.mc_amd == NULL)
+ if (mc_amd == NULL)
return;
spin_lock_irqsave(&microcode_update_lock, flags);
- addr = (unsigned long)&uci->mc.mc_amd->hdr.data_code;
+ addr = (unsigned long)&mc_amd->hdr.data_code;
edx = (unsigned int)(((unsigned long)upper_32_bits(addr)));
eax = (unsigned int)(((unsigned long)lower_32_bits(addr)));
@@ -214,16 +244,16 @@ static void apply_microcode_amd(int cpu)
spin_unlock_irqrestore(&microcode_update_lock, flags);
/* check current patch id and patch's id for match */
- if (rev != uci->mc.mc_amd->hdr.patch_id) {
+ if (rev != mc_amd->hdr.patch_id) {
printk(KERN_ERR "microcode: CPU%d update from revision "
"0x%x to 0x%x failed\n", cpu_num,
- uci->mc.mc_amd->hdr.patch_id, rev);
+ mc_amd->hdr.patch_id, rev);
return;
}
printk(KERN_INFO "microcode: CPU%d updated from revision "
"0x%x to 0x%x \n",
- cpu_num, uci->cpu_sig.rev, uci->mc.mc_amd->hdr.patch_id);
+ cpu_num, uci->cpu_sig.rev, mc_amd->hdr.patch_id);
uci->cpu_sig.rev = rev;
}
@@ -355,12 +385,12 @@ static int generic_load_microcode(int cpu, void *data, size_t size,
if (new_mc) {
if (!leftover) {
- if (uci->mc.mc_amd)
- vfree(uci->mc.mc_amd);
- uci->mc.mc_amd = (struct microcode_amd *)new_mc;
+ if (uci->mc)
+ vfree(uci->mc);
+ uci->mc = new_mc;
pr_debug("microcode: CPU%d found a matching microcode update with"
" version 0x%x (current=0x%x)\n",
- cpu, uci->mc.mc_amd->hdr.patch_id, uci->cpu_sig.rev);
+ cpu, new_rev, uci->cpu_sig.rev);
} else
vfree(new_mc);
}
@@ -416,8 +446,8 @@ static void microcode_fini_cpu_amd(int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
- vfree(uci->mc.mc_amd);
- uci->mc.mc_amd = NULL;
+ vfree(uci->mc);
+ uci->mc = NULL;
}
static struct microcode_ops microcode_amd_ops = {
@@ -428,23 +458,7 @@ static struct microcode_ops microcode_amd_ops = {
.microcode_fini_cpu = microcode_fini_cpu_amd,
};
-static int __init microcode_amd_module_init(void)
+struct microcode_ops * __init init_amd_microcode(void)
{
- struct cpuinfo_x86 *c = &cpu_data(0);
-
- equiv_cpu_table = NULL;
- if (c->x86_vendor != X86_VENDOR_AMD) {
- printk(KERN_ERR "microcode: CPU platform is not AMD-capable\n");
- return -ENODEV;
- }
-
- return microcode_init(&microcode_amd_ops, THIS_MODULE);
-}
-
-static void __exit microcode_amd_module_exit(void)
-{
- microcode_exit();
+ return &microcode_amd_ops;
}
-
-module_init(microcode_amd_module_init)
-module_exit(microcode_amd_module_exit)
diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode_core.c
index 0c2634f4fd7..ff031dbccdf 100644
--- a/arch/x86/kernel/microcode.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -298,7 +298,7 @@ static int microcode_resume_cpu(int cpu)
pr_debug("microcode: CPU%d resumed\n", cpu);
- if (!uci->mc.valid_mc)
+ if (!uci->mc)
return 1;
/*
@@ -443,17 +443,20 @@ static struct notifier_block __refdata mc_cpu_notifier = {
.notifier_call = mc_cpu_callback,
};
-int microcode_init(void *opaque, struct module *module)
+static int __init microcode_init(void)
{
- struct microcode_ops *ops = (struct microcode_ops *)opaque;
+ struct cpuinfo_x86 *c = &cpu_data(0);
int error;
- if (microcode_ops) {
- printk(KERN_ERR "microcode: already loaded the other module\n");
- return -EEXIST;
- }
+ if (c->x86_vendor == X86_VENDOR_INTEL)
+ microcode_ops = init_intel_microcode();
+ else if (c->x86_vendor != X86_VENDOR_AMD)
+ microcode_ops = init_amd_microcode();
- microcode_ops = ops;
+ if (!microcode_ops) {
+ printk(KERN_ERR "microcode: no support for this CPU vendor\n");
+ return -ENODEV;
+ }
error = microcode_dev_init();
if (error)
@@ -483,9 +486,8 @@ int microcode_init(void *opaque, struct module *module)
return 0;
}
-EXPORT_SYMBOL_GPL(microcode_init);
-void __exit microcode_exit(void)
+static void __exit microcode_exit(void)
{
microcode_dev_exit();
@@ -502,4 +504,6 @@ void __exit microcode_exit(void)
printk(KERN_INFO
"Microcode Update Driver: v" MICROCODE_VERSION " removed.\n");
}
-EXPORT_SYMBOL_GPL(microcode_exit);
+
+module_init(microcode_init);
+module_exit(microcode_exit);
diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c
index 48ed3cef58c..622dc4a2178 100644
--- a/arch/x86/kernel/microcode_intel.c
+++ b/arch/x86/kernel/microcode_intel.c
@@ -97,6 +97,38 @@ MODULE_DESCRIPTION("Microcode Update Driver");
MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
MODULE_LICENSE("GPL");
+struct microcode_header_intel {
+ unsigned int hdrver;
+ unsigned int rev;
+ unsigned int date;
+ unsigned int sig;
+ unsigned int cksum;
+ unsigned int ldrver;
+ unsigned int pf;
+ unsigned int datasize;
+ unsigned int totalsize;
+ unsigned int reserved[3];
+};
+
+struct microcode_intel {
+ struct microcode_header_intel hdr;
+ unsigned int bits[0];
+};
+
+/* microcode format is extended from prescott processors */
+struct extended_signature {
+ unsigned int sig;
+ unsigned int pf;
+ unsigned int cksum;
+};
+
+struct extended_sigtable {
+ unsigned int count;
+ unsigned int cksum;
+ unsigned int reserved[3];
+ struct extended_signature sigs[0];
+};
+
#define DEFAULT_UCODE_DATASIZE (2000)
#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel))
#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
@@ -284,11 +316,12 @@ static void apply_microcode(int cpu)
unsigned int val[2];
int cpu_num = raw_smp_processor_id();
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
+ struct microcode_intel *mc_intel = uci->mc;
/* We should bind the task to the CPU */
BUG_ON(cpu_num != cpu);
- if (uci->mc.mc_intel == NULL)
+ if (mc_intel == NULL)
return;
/* serialize access to the physical write to MSR 0x79 */
@@ -296,8 +329,8 @@ static void apply_microcode(int cpu)
/* write microcode via MSR 0x79 */
wrmsr(MSR_IA32_UCODE_WRITE,
- (unsigned long) uci->mc.mc_intel->bits,
- (unsigned long) uci->mc.mc_intel->bits >> 16 >> 16);
+ (unsigned long) mc_intel->bits,
+ (unsigned long) mc_intel->bits >> 16 >> 16);
wrmsr(MSR_IA32_UCODE_REV, 0, 0);
/* see notes above for revision 1.07. Apparent chip bug */
@@ -307,7 +340,7 @@ static void apply_microcode(int cpu)
rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
spin_unlock_irqrestore(&microcode_update_lock, flags);
- if (val[1] != uci->mc.mc_intel->hdr.rev) {
+ if (val[1] != mc_intel->hdr.rev) {
printk(KERN_ERR "microcode: CPU%d update from revision "
"0x%x to 0x%x failed\n", cpu_num, uci->cpu_sig.rev, val[1]);
return;
@@ -315,9 +348,9 @@ static void apply_microcode(int cpu)
printk(KERN_INFO "microcode: CPU%d updated from revision "
"0x%x to 0x%x, date = %04x-%02x-%02x \n",
cpu_num, uci->cpu_sig.rev, val[1],
- uci->mc.mc_intel->hdr.date & 0xffff,
- uci->mc.mc_intel->hdr.date >> 24,
- (uci->mc.mc_intel->hdr.date >> 16) & 0xff);
+ mc_intel->hdr.date & 0xffff,
+ mc_intel->hdr.date >> 24,
+ (mc_intel->hdr.date >> 16) & 0xff);
uci->cpu_sig.rev = val[1];
}
@@ -367,12 +400,12 @@ static int generic_load_microcode(int cpu, void *data, size_t size,
if (new_mc) {
if (!leftover) {
- if (uci->mc.mc_intel)
- vfree(uci->mc.mc_intel);
- uci->mc.mc_intel = (struct microcode_intel *)new_mc;
+ if (uci->mc)
+ vfree(uci->mc);
+ uci->mc = (struct microcode_intel *)new_mc;
pr_debug("microcode: CPU%d found a matching microcode update with"
" version 0x%x (current=0x%x)\n",
- cpu, uci->mc.mc_intel->hdr.rev, uci->cpu_sig.rev);
+ cpu, new_rev, uci->cpu_sig.rev);
} else
vfree(new_mc);
}
@@ -428,11 +461,11 @@ static void microcode_fini_cpu(int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
- vfree(uci->mc.mc_intel);
- uci->mc.mc_intel = NULL;
+ vfree(uci->mc);
+ uci->mc = NULL;
}
-static struct microcode_ops microcode_intel_ops = {
+struct microcode_ops microcode_intel_ops = {
.request_microcode_user = request_microcode_user,
.request_microcode_fw = request_microcode_fw,
.collect_cpu_info = collect_cpu_info,
@@ -440,22 +473,8 @@ static struct microcode_ops microcode_intel_ops = {
.microcode_fini_cpu = microcode_fini_cpu,
};
-static int __init microcode_intel_module_init(void)
-{
- struct cpuinfo_x86 *c = &cpu_data(0);
-
- if (c->x86_vendor != X86_VENDOR_INTEL) {
- printk(KERN_ERR "microcode: CPU platform is not Intel-capable\n");
- return -ENODEV;
- }
-
- return microcode_init(&microcode_intel_ops, THIS_MODULE);
-}
-
-static void __exit microcode_intel_module_exit(void)
+struct microcode_ops * __init init_intel_microcode(void)
{
- microcode_exit();
+ return &microcode_intel_ops;
}
-module_init(microcode_intel_module_init)
-module_exit(microcode_intel_module_exit)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 06:22:12 +0000