diff options
Diffstat (limited to 'arch/x86/cpu/cpu.c')
| -rw-r--r-- | arch/x86/cpu/cpu.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 97c77ba161..b391b7ade4 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -25,6 +25,7 @@ #include <malloc.h> #include <asm/control_regs.h> #include <asm/cpu.h> +#include <asm/post.h> #include <asm/processor.h> #include <asm/processor-flags.h> #include <asm/interrupt.h> @@ -567,3 +568,26 @@ int cpu_jump_to_64bit(ulong setup_base, ulong target) return -EFAULT; } + +void show_boot_progress(int val) +{ +#if MIN_PORT80_KCLOCKS_DELAY + /* + * Scale the time counter reading to avoid using 64 bit arithmetics. + * Can't use get_timer() here becuase it could be not yet + * initialized or even implemented. + */ + if (!gd->arch.tsc_prev) { + gd->arch.tsc_base_kclocks = rdtsc() / 1000; + gd->arch.tsc_prev = 0; + } else { + uint32_t now; + + do { + now = rdtsc() / 1000 - gd->arch.tsc_base_kclocks; + } while (now < (gd->arch.tsc_prev + MIN_PORT80_KCLOCKS_DELAY)); + gd->arch.tsc_prev = now; + } +#endif + outb(val, POST_PORT); +} |