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Diffstat (limited to 'arch/x86_64/kernel/setup.c')
-rw-r--r--arch/x86_64/kernel/setup.c85
1 files changed, 47 insertions, 38 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index aa55e3cec665..a57eec8311a7 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -46,6 +46,7 @@
#include <linux/cpufreq.h>
#include <linux/dmi.h>
#include <linux/dma-mapping.h>
+#include <linux/ctype.h>
#include <asm/mtrr.h>
#include <asm/uaccess.h>
@@ -67,6 +68,7 @@
#include <asm/swiotlb.h>
#include <asm/sections.h>
#include <asm/gart-mapping.h>
+#include <asm/dmi.h>
/*
* Machine setup..
@@ -91,6 +93,12 @@ int bootloader_type;
unsigned long saved_video_mode;
+/*
+ * Early DMI memory
+ */
+int dmi_alloc_index;
+char dmi_alloc_data[DMI_MAX_DATA];
+
/*
* Setup options
*/
@@ -270,6 +278,13 @@ static void __init probe_roms(void)
}
}
+/* Check for full argument with no trailing characters */
+static int fullarg(char *p, char *arg)
+{
+ int l = strlen(arg);
+ return !memcmp(p, arg, l) && (p[l] == 0 || isspace(p[l]));
+}
+
static __init void parse_cmdline_early (char ** cmdline_p)
{
char c = ' ', *to = command_line, *from = COMMAND_LINE;
@@ -293,10 +308,10 @@ static __init void parse_cmdline_early (char ** cmdline_p)
#endif
#ifdef CONFIG_ACPI
/* "acpi=off" disables both ACPI table parsing and interpreter init */
- if (!memcmp(from, "acpi=off", 8))
+ if (fullarg(from,"acpi=off"))
disable_acpi();
- if (!memcmp(from, "acpi=force", 10)) {
+ if (fullarg(from, "acpi=force")) {
/* add later when we do DMI horrors: */
acpi_force = 1;
acpi_disabled = 0;
@@ -304,52 +319,47 @@ static __init void parse_cmdline_early (char ** cmdline_p)
/* acpi=ht just means: do ACPI MADT parsing
at bootup, but don't enable the full ACPI interpreter */
- if (!memcmp(from, "acpi=ht", 7)) {
+ if (fullarg(from, "acpi=ht")) {
if (!acpi_force)
disable_acpi();
acpi_ht = 1;
}
- else if (!memcmp(from, "pci=noacpi", 10))
+ else if (fullarg(from, "pci=noacpi"))
acpi_disable_pci();
- else if (!memcmp(from, "acpi=noirq", 10))
+ else if (fullarg(from, "acpi=noirq"))
acpi_noirq_set();
- else if (!memcmp(from, "acpi_sci=edge", 13))
+ else if (fullarg(from, "acpi_sci=edge"))
acpi_sci_flags.trigger = 1;
- else if (!memcmp(from, "acpi_sci=level", 14))
+ else if (fullarg(from, "acpi_sci=level"))
acpi_sci_flags.trigger = 3;
- else if (!memcmp(from, "acpi_sci=high", 13))
+ else if (fullarg(from, "acpi_sci=high"))
acpi_sci_flags.polarity = 1;
- else if (!memcmp(from, "acpi_sci=low", 12))
+ else if (fullarg(from, "acpi_sci=low"))
acpi_sci_flags.polarity = 3;
/* acpi=strict disables out-of-spec workarounds */
- else if (!memcmp(from, "acpi=strict", 11)) {
+ else if (fullarg(from, "acpi=strict")) {
acpi_strict = 1;
}
#ifdef CONFIG_X86_IO_APIC
- else if (!memcmp(from, "acpi_skip_timer_override", 24))
+ else if (fullarg(from, "acpi_skip_timer_override"))
acpi_skip_timer_override = 1;
#endif
#endif
- if (!memcmp(from, "disable_timer_pin_1", 19))
+ if (fullarg(from, "disable_timer_pin_1"))
disable_timer_pin_1 = 1;
- if (!memcmp(from, "enable_timer_pin_1", 18))
+ if (fullarg(from, "enable_timer_pin_1"))
disable_timer_pin_1 = -1;
- if (!memcmp(from, "nolapic", 7) ||
- !memcmp(from, "disableapic", 11))
+ if (fullarg(from, "nolapic") || fullarg(from, "disableapic"))
disable_apic = 1;
- /* Don't confuse with noapictimer */
- if (!memcmp(from, "noapic", 6) &&
- (from[6] == ' ' || from[6] == 0))
+ if (fullarg(from, "noapic"))
skip_ioapic_setup = 1;
- /* Make sure to not confuse with apic= */
- if (!memcmp(from, "apic", 4) &&
- (from[4] == ' ' || from[4] == 0)) {
+ if (fullarg(from,"apic")) {
skip_ioapic_setup = 0;
ioapic_force = 1;
}
@@ -388,7 +398,7 @@ static __init void parse_cmdline_early (char ** cmdline_p)
iommu_setup(from+6);
}
- if (!memcmp(from,"oops=panic", 10))
+ if (fullarg(from,"oops=panic"))
panic_on_oops = 1;
if (!memcmp(from, "noexec=", 7))
@@ -611,11 +621,14 @@ void __init setup_arch(char **cmdline_p)
* we are rounding upwards:
*/
end_pfn = e820_end_of_ram();
+ num_physpages = end_pfn; /* for pfn_valid */
check_efer();
init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
+ dmi_scan_machine();
+
zap_low_mappings(0);
#ifdef CONFIG_ACPI
@@ -708,6 +721,12 @@ void __init setup_arch(char **cmdline_p)
check_ioapic();
+ /*
+ * set this early, so we dont allocate cpu0
+ * if MADT list doesnt list BSP first
+ * mpparse.c/MP_processor_info() allocates logical cpu numbers.
+ */
+ cpu_set(0, cpu_present_map);
#ifdef CONFIG_ACPI
/*
* Read APIC and some other early information from ACPI tables.
@@ -836,7 +855,7 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
unsigned bits;
#ifdef CONFIG_NUMA
int node = 0;
- unsigned apicid = phys_proc_id[cpu];
+ unsigned apicid = hard_smp_processor_id();
#endif
bits = 0;
@@ -846,7 +865,7 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
/* Low order bits define the core id (index of core in socket) */
cpu_core_id[cpu] = phys_proc_id[cpu] & ((1 << bits)-1);
/* Convert the APIC ID into the socket ID */
- phys_proc_id[cpu] >>= bits;
+ phys_proc_id[cpu] = phys_pkg_id(bits);
#ifdef CONFIG_NUMA
node = phys_proc_id[cpu];
@@ -872,8 +891,8 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
}
numa_set_node(cpu, node);
- printk(KERN_INFO "CPU %d(%d) -> Node %d -> Core %d\n",
- cpu, c->x86_max_cores, node, cpu_core_id[cpu]);
+ printk(KERN_INFO "CPU %d/%x(%d) -> Node %d -> Core %d\n",
+ cpu, apicid, c->x86_max_cores, node, cpu_core_id[cpu]);
#endif
#endif
}
@@ -927,8 +946,6 @@ static int __init init_amd(struct cpuinfo_x86 *c)
if (c->extended_cpuid_level >= 0x80000008) {
c->x86_max_cores = (cpuid_ecx(0x80000008) & 0xff) + 1;
- if (c->x86_max_cores & (c->x86_max_cores - 1))
- c->x86_max_cores = 1;
amd_detect_cmp(c);
}
@@ -1261,7 +1278,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */
- "pni", NULL, NULL, "monitor", "ds_cpl", "vmx", NULL, "est",
+ "pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", NULL, "cid", NULL, NULL, "cx16", "xtpr", NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
@@ -1344,8 +1361,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
{
int i;
for ( i = 0 ; i < 32*NCAPINTS ; i++ )
- if ( test_bit(i, &c->x86_capability) &&
- x86_cap_flags[i] != NULL )
+ if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
seq_printf(m, " %s", x86_cap_flags[i]);
}
@@ -1403,10 +1419,3 @@ struct seq_operations cpuinfo_op = {
.show = show_cpuinfo,
};
-static int __init run_dmi_scan(void)
-{
- dmi_scan_machine();
- return 0;
-}
-core_initcall(run_dmi_scan);
-
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.