On Mon, Oct 19, 2015 at 5:55 AM, Simon Glass <s...@chromium.org> wrote:
> This code takes about 450ms without the MRC cache and about 27ms with the
> cache. Add a debug timer so that this time can be displayed.
>
> Signed-off-by: Simon Glass <s...@chromium.org>
> ---
>
> arch/x86/cpu/ivybridge/sdram.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/x86/cpu/ivybridge/sdram.c b/arch/x86/cpu/ivybridge/sdram.c
> index e637909..d9b3dfc 100644
> --- a/arch/x86/cpu/ivybridge/sdram.c
> +++ b/arch/x86/cpu/ivybridge/sdram.c
> @@ -336,9 +336,11 @@ int sdram_initialise(struct pei_data *pei_data)
> if (data) {
> int rv;
> int (*func)(struct pei_data *);
> + ulong start;
>
> debug("Calling MRC at %p\n", data);
> post_code(POST_PRE_MRC);
> + start = get_timer(0);
> func = (int (*)(struct pei_data *))data;
> rv = func(pei_data);
> post_code(POST_MRC);
> @@ -356,6 +358,7 @@ int sdram_initialise(struct pei_data *pei_data)
> printf("Nonzero MRC return value.\n");
> return -EFAULT;
> }
> + debug("MRC execution time %lu ms\n", get_timer(start));
> } else {
> printf("UEFI PEI System Agent not found.\n");
> return -ENOSYS;
> --
Reviewed-by: Bin Meng <bmeng...@gmail.com>
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