diff options
Diffstat (limited to 'arch/i386/cpu')
| -rw-r--r-- | arch/i386/cpu/cpu.c | 13 | ||||
| -rw-r--r-- | arch/i386/cpu/interrupts.c | 3 | ||||
| -rw-r--r-- | arch/i386/cpu/sc520/sc520.c | 7 | ||||
| -rw-r--r-- | arch/i386/cpu/start.S | 3 | ||||
| -rw-r--r-- | arch/i386/cpu/start16.S | 5 |
5 files changed, 21 insertions, 10 deletions
diff --git a/arch/i386/cpu/cpu.c b/arch/i386/cpu/cpu.c index 1dcbb983f5..e96380aa92 100644 --- a/arch/i386/cpu/cpu.c +++ b/arch/i386/cpu/cpu.c @@ -36,6 +36,7 @@ #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 */ @@ -88,12 +89,16 @@ static void reload_gdt(void) int cpu_init_f(void) { + const u32 em_rst = ~X86_CR0_EM; + const u32 mp_ne_set = X86_CR0_MP | X86_CR0_NE; + /* initialize FPU, reset EM, set MP and NE */ asm ("fninit\n" \ - "movl %cr0, %eax\n" \ - "andl $~0x4, %eax\n" \ - "orl $0x22, %eax\n" \ - "movl %eax, %cr0\n" ); + "movl %%cr0, %%eax\n" \ + "andl %0, %%eax\n" \ + "orl %1, %%eax\n" \ + "movl %%eax, %%cr0\n" \ + : : "i" (em_rst), "i" (mp_ne_set) : "eax"); return 0; } diff --git a/arch/i386/cpu/interrupts.c b/arch/i386/cpu/interrupts.c index cdff3d934d..1cefe02c86 100644 --- a/arch/i386/cpu/interrupts.c +++ b/arch/i386/cpu/interrupts.c @@ -30,6 +30,7 @@ #include <common.h> #include <asm/interrupt.h> #include <asm/io.h> +#include <asm/processor-flags.h> #define DECLARE_INTERRUPT(x) \ ".globl irq_"#x"\n" \ @@ -237,7 +238,7 @@ int disable_interrupts(void) asm volatile ("pushfl ; popl %0 ; cli\n" : "=g" (flags) : ); - return (flags&0x200); /* IE flags is bit 9 */ + return flags & X86_EFLAGS_IF; /* IE flags is bit 9 */ } /* IRQ Low-Level Service Routine */ diff --git a/arch/i386/cpu/sc520/sc520.c b/arch/i386/cpu/sc520/sc520.c index 7acd471d96..21037d29d7 100644 --- a/arch/i386/cpu/sc520/sc520.c +++ b/arch/i386/cpu/sc520/sc520.c @@ -26,6 +26,7 @@ #include <common.h> #include <asm/io.h> +#include <asm/processor-flags.h> #include <asm/ic/sc520.h> DECLARE_GLOBAL_DATA_PTR; @@ -41,6 +42,8 @@ volatile sc520_mmcr_t *sc520_mmcr = (sc520_mmcr_t *)0xfffef000; void init_sc520(void) { + const u32 nw_cd_rst = ~(X86_CR0_NW | X86_CR0_CD); + /* * Set the UARTxCTL register at it's slower, * baud clock giving us a 1.8432 MHz reference @@ -84,8 +87,8 @@ void init_sc520(void) /* turn on the cache and disable write through */ asm("movl %%cr0, %%eax\n" - "andl $0x9fffffff, %%eax\n" - "movl %%eax, %%cr0\n" : : : "eax"); + "andl %0, %%eax\n" + "movl %%eax, %%cr0\n" : : "i" (nw_cd_rst) : "eax"); } unsigned long init_sc520_dram(void) diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S index ab9338a00a..460c21bef8 100644 --- a/arch/i386/cpu/start.S +++ b/arch/i386/cpu/start.S @@ -26,6 +26,7 @@ #include <config.h> #include <version.h> #include <asm/global_data.h> +#include <asm/processor-flags.h> .section .text @@ -46,7 +47,7 @@ _i386boot_start: /* Turn of cache (this might require a 486-class CPU) */ movl %cr0, %eax - orl $0x60000000, %eax + orl $(X86_CR0_NW | X86_CR0_CD), %eax movl %eax, %cr0 wbinvd diff --git a/arch/i386/cpu/start16.S b/arch/i386/cpu/start16.S index 0a5823d3c2..7dc5358366 100644 --- a/arch/i386/cpu/start16.S +++ b/arch/i386/cpu/start16.S @@ -23,6 +23,7 @@ */ #include <asm/global_data.h> +#include <asm/processor-flags.h> #define BOOT_SEG 0xffff0000 /* linear segment of boot code */ #define a32 .byte 0x67; @@ -45,7 +46,7 @@ board_init16_ret: /* Turn of cache (this might require a 486-class CPU) */ movl %cr0, %eax - orl $0x60000000, %eax + orl $(X86_CR0_NW & X86_CR0_CD), %eax movl %eax, %cr0 wbinvd @@ -55,7 +56,7 @@ o32 cs lgdt gdt_ptr /* Now, we enter protected mode */ movl %cr0, %eax - orl $1, %eax + orl $X86_CR0_PE, %eax movl %eax, %cr0 /* Flush the prefetch queue */ |
