diff options
Diffstat (limited to 'arch/i386/kernel/acpi/boot.c')
| -rw-r--r-- | arch/i386/kernel/acpi/boot.c | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c index ee003bc0e8b1..87e2ab50b694 100644 --- a/arch/i386/kernel/acpi/boot.c +++ b/arch/i386/kernel/acpi/boot.c @@ -36,6 +36,8 @@ #include <asm/io.h> #include <asm/mpspec.h> +int __initdata acpi_force = 0; + #ifdef CONFIG_X86_64 extern void __init clustered_apic_check(void); @@ -860,8 +862,6 @@ static void __init acpi_process_madt(void) return; } -extern int acpi_force; - #ifdef __i386__ static int __init disable_acpi_irq(struct dmi_system_id *d) @@ -1163,3 +1163,75 @@ int __init acpi_boot_init(void) return 0; } + +static int __init parse_acpi(char *arg) +{ + if (!arg) + return -EINVAL; + + /* "acpi=off" disables both ACPI table parsing and interpreter */ + if (strcmp(arg, "off") == 0) { + disable_acpi(); + } + /* acpi=force to over-ride black-list */ + else if (strcmp(arg, "force") == 0) { + acpi_force = 1; + acpi_ht = 1; + acpi_disabled = 0; + } + /* acpi=strict disables out-of-spec workarounds */ + else if (strcmp(arg, "strict") == 0) { + acpi_strict = 1; + } + /* Limit ACPI just to boot-time to enable HT */ + else if (strcmp(arg, "ht") == 0) { + if (!acpi_force) + disable_acpi(); + acpi_ht = 1; + } + /* "acpi=noirq" disables ACPI interrupt routing */ + else if (strcmp(arg, "noirq") == 0) { + acpi_noirq_set(); + } else { + /* Core will printk when we return error. */ + return -EINVAL; + } + return 0; +} +early_param("acpi", parse_acpi); + +/* FIXME: Using pci= for an ACPI parameter is a travesty. */ +static int __init parse_pci(char *arg) +{ + if (arg && strcmp(arg, "noacpi") == 0) + acpi_disable_pci(); + return 0; +} +early_param("pci", parse_pci); + +#ifdef CONFIG_X86_IO_APIC +static int __init parse_acpi_skip_timer_override(char *arg) +{ + acpi_skip_timer_override = 1; + return 0; +} +early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); +#endif /* CONFIG_X86_IO_APIC */ + +static int __init setup_acpi_sci(char *s) +{ + if (!s) + return -EINVAL; + if (!strcmp(s, "edge")) + acpi_sci_flags.trigger = 1; + else if (!strcmp(s, "level")) + acpi_sci_flags.trigger = 3; + else if (!strcmp(s, "high")) + acpi_sci_flags.polarity = 1; + else if (!strcmp(s, "low")) + acpi_sci_flags.polarity = 3; + else + return -EINVAL; + return 0; +} +early_param("acpi_sci", setup_acpi_sci); |