Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/749
-gerrit
commit e1a7cc59d1dd5642d4fa83d5cbe4fe18194310d3 Author: Stefan Reinauer reinauer@chromium.org Date: Fri Nov 4 12:31:58 2011 -0700
Add more timestamps in coreboot.
This adds a number of timestamps in ramstage and romstage so we can figure out where execution time goes.
Change-Id: Iea17c08774e623fc1ca3fa4505b70523ba4cbf01 Signed-off-by: Stefan Reinauer reinauer@google.com --- src/arch/x86/lib/cbfs_and_run.c | 3 +++ src/boot/hardwaremain.c | 21 +++++++++++++++++++++ src/include/timestamp.h | 22 ++++++++++++++++++++-- 3 files changed, 44 insertions(+), 2 deletions(-)
diff --git a/src/arch/x86/lib/cbfs_and_run.c b/src/arch/x86/lib/cbfs_and_run.c index ad36ddc..53f06ee 100644 --- a/src/arch/x86/lib/cbfs_and_run.c +++ b/src/arch/x86/lib/cbfs_and_run.c @@ -20,16 +20,19 @@ #include <console/console.h> #include <cbfs.h> #include <arch/stages.h> +#include <timestamp.h>
static void cbfs_and_run_core(const char *filename, unsigned ebp) { u8 *dst;
+ timestamp_add_now(TS_START_COPYRAM); print_debug("Loading image.\n"); dst = cbfs_load_stage(filename); if ((void *)dst == (void *) -1) die("FATAL: Essential component is missing.\n");
+ timestamp_add_now(TS_END_COPYRAM); print_debug("Jumping to image.\n"); __asm__ volatile ( "movl %%eax, %%ebp\n" diff --git a/src/boot/hardwaremain.c b/src/boot/hardwaremain.c index 9b293c0..489caa3 100644 --- a/src/boot/hardwaremain.c +++ b/src/boot/hardwaremain.c @@ -41,6 +41,7 @@ it with the version available from LANL. #if CONFIG_WRITE_HIGH_TABLES #include <cbmem.h> #endif +#include <timestamp.h>
/** * @brief Main function of the RAM part of coreboot. @@ -56,7 +57,9 @@ void hardwaremain(int boot_complete); void hardwaremain(int boot_complete) { struct lb_memory *lb_mem; + tsc_t timestamps[6];
+ timestamps[0] = rdtsc(); post_code(POST_ENTRY_RAMSTAGE);
/* console_init() MUST PRECEDE ALL printk()! */ @@ -78,18 +81,26 @@ void hardwaremain(int boot_complete) /* FIXME: Is there a better way to handle this? */ init_timer();
+ timestamps[1] = rdtsc(); /* Find the devices we don't have hard coded knowledge about. */ dev_enumerate(); post_code(POST_DEVICE_ENUMERATION_COMPLETE); + + timestamps[2] = rdtsc(); /* Now compute and assign the bus resources. */ dev_configure(); post_code(POST_DEVICE_CONFIGURATION_COMPLETE); + + timestamps[3] = rdtsc(); /* Now actually enable devices on the bus */ dev_enable(); + + timestamps[4] = rdtsc(); /* And of course initialize devices on the bus */ dev_initialize(); post_code(POST_DEVICES_ENABLED);
+ timestamps[5] = rdtsc(); #if CONFIG_WRITE_HIGH_TABLES == 1 cbmem_initialize(); #if CONFIG_CONSOLE_CBMEM @@ -101,10 +112,20 @@ void hardwaremain(int boot_complete) post_code(0x8a); #endif
+ timestamp_add(TS_START_RAMSTAGE, timestamps[0]); + timestamp_add(TS_DEVICE_ENUMERATE, timestamps[1]); + timestamp_add(TS_DEVICE_CONFIGURE, timestamps[2]); + timestamp_add(TS_DEVICE_ENABLE, timestamps[3]); + timestamp_add(TS_DEVICE_INITIALIZE, timestamps[4]); + timestamp_add(TS_DEVICE_DONE, timestamps[5]); + timestamp_add_now(TS_WRITE_TABLES); + /* Now that we have collected all of our information * write our configuration tables. */ lb_mem = write_tables(); + + timestamp_add_now(TS_LOAD_PAYLOAD); cbfs_load_payload(lb_mem, CONFIG_CBFS_PREFIX "/payload"); printk(BIOS_ERR, "Boot failed.\n"); } diff --git a/src/include/timestamp.h b/src/include/timestamp.h index 8b9a89a..0bb323c 100644 --- a/src/include/timestamp.h +++ b/src/include/timestamp.h @@ -35,14 +35,32 @@ struct timestamp_table { } __attribute__((packed));
enum timestamp_id { - TS_BEFORE_INITRAM = 1, - TS_AFTER_INITRAM = 2, + TS_START_ROMSTAGE = 1, + TS_BEFORE_INITRAM = 2, + TS_AFTER_INITRAM = 3, + TS_END_ROMSTAGE = 4, + TS_START_COPYRAM = 8, + TS_END_COPYRAM = 9, + TS_START_RAMSTAGE = 10, + TS_DEVICE_ENUMERATE = 30, + TS_DEVICE_CONFIGURE = 40, + TS_DEVICE_ENABLE = 50, + TS_DEVICE_INITIALIZE = 60, + TS_DEVICE_DONE = 70, + TS_WRITE_TABLES = 80, + TS_LOAD_PAYLOAD = 90, TS_ACPI_WAKE_JUMP = 98, TS_SELFBOOT_JUMP = 99, };
+#if CONFIG_COLLECT_TIMESTAMPS void timestamp_init(tsc_t base); void timestamp_add(enum timestamp_id id, tsc_t ts_time); void timestamp_add_now(enum timestamp_id id); +#else +#define timestamp_init(base) +#define timestamp_add(id, time) +#define timestamp_add_now(id) +#endif
#endif