diff options
Diffstat (limited to 'arch/i386/cpu/cpu.c')
| -rw-r--r-- | arch/i386/cpu/cpu.c | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/arch/i386/cpu/cpu.c b/arch/i386/cpu/cpu.c index 2339cd41b..5ca0c9156 100644 --- a/arch/i386/cpu/cpu.c +++ b/arch/i386/cpu/cpu.c @@ -1,6 +1,9 @@ /* + * (C) Copyright 2008-2011 + * Graeme Russ, <graeme.russ@gmail.com> + * * (C) Copyright 2002 - * Daniel Engström, Omicron Ceti AB, daniel@omicron.se. + * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> @@ -29,18 +32,16 @@ * MA 02111-1307 USA */ -/* - * CPU specific code - */ - #include <common.h> #include <command.h> #include <asm/processor.h> #include <asm/processor-flags.h> #include <asm/interrupt.h> -/* Constructor for a conventional segment GDT (or LDT) entry */ -/* This is a macro so it can be used in initializers */ +/* + * Constructor for a conventional segment GDT (or LDT) entry + * This is a macro so it can be used in initialisers + */ #define GDT_ENTRY(flags, base, limit) \ ((((base) & 0xff000000ULL) << (56-24)) | \ (((flags) & 0x0000f0ffULL) << 40) | \ @@ -48,10 +49,6 @@ (((base) & 0x00ffffffULL) << 16) | \ (((limit) & 0x0000ffffULL))) -/* - * Set up the GDT - */ - struct gdt_ptr { u16 len; u32 ptr; @@ -59,8 +56,10 @@ struct gdt_ptr { static void reload_gdt(void) { - /* There are machines which are known to not boot with the GDT - being 8-byte unaligned. Intel recommends 16 byte alignment. */ + /* + * There are machines which are known to not boot with the GDT + * being 8-byte unaligned. Intel recommends 16 byte alignment + */ static const u64 boot_gdt[] __attribute__((aligned(16))) = { /* CS: code, read/execute, 4 GB, base 0 */ [GDT_ENTRY_32BIT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff), @@ -86,7 +85,6 @@ static void reload_gdt(void) : : "m" (gdt) : "ecx"); } - int x86_cpu_init_f(void) { const u32 em_rst = ~X86_CR0_EM; @@ -125,7 +123,9 @@ int cpu_init_r(void) __attribute__((weak, alias("x86_cpu_init_r"))); int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { printf ("resetting ...\n"); - udelay(50000); /* wait 50 ms */ + + /* wait 50 ms */ + udelay(50000); disable_interrupts(); reset_cpu(0); @@ -136,7 +136,6 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) void flush_cache (unsigned long dummy1, unsigned long dummy2) { asm("wbinvd\n"); - return; } void __attribute__ ((regparm(0))) generate_gpf(void); |