diff options
| author | Rudolf Marek <r.marek@assembler.cz> | 2012-04-24 16:01:24 +0200 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2012-04-24 18:19:54 +0200 |
| commit | 3294a0f1ca19b32301df72cea1015924102924ec (patch) | |
| tree | a4c0cbc9a236d79e6cce88260764b5098856f891 /src/boot | |
| parent | 02c204706f1f43dd49e8c9cb5136b6a87117dc72 (diff) | |
Make timestamp collection conditional in hardwaremain.c
Otherwise it breaks 486 boards without RDTSC, ending with
exception 6.
It ends like this on bifferboard:
Jumping to image.
Unexpected Exception: 6 @ 10:001007e3 - Halting
Code: 0 eflags: 00000016
eax: 001001fe ebx: 00100118 ecx: 00000000 edx: 00108e00
edi: 0010aaf8 esi: 00000000 ebp: 00117ff4 esp: 00117fd8
Please keep in mind 486, dont use rdtsc/cpuid in generic code, or if you do make sure make it non-default option.
Change that broke it: http://review.coreboot.org/#/c/749/7/src/boot/hardwaremain.c
Change-Id: I974b25377c20a11430b35b24dcc275d8cbfd2b9a
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/925
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/boot')
| -rw-r--r-- | src/boot/hardwaremain.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/boot/hardwaremain.c b/src/boot/hardwaremain.c index 489caa39a5..532135f9ec 100644 --- a/src/boot/hardwaremain.c +++ b/src/boot/hardwaremain.c @@ -57,9 +57,10 @@ void hardwaremain(int boot_complete); void hardwaremain(int boot_complete) { struct lb_memory *lb_mem; +#if CONFIG_COLLECT_TIMESTAMPS tsc_t timestamps[6]; - timestamps[0] = rdtsc(); +#endif post_code(POST_ENTRY_RAMSTAGE); /* console_init() MUST PRECEDE ALL printk()! */ @@ -81,26 +82,37 @@ void hardwaremain(int boot_complete) /* FIXME: Is there a better way to handle this? */ init_timer(); +#if CONFIG_COLLECT_TIMESTAMPS timestamps[1] = rdtsc(); +#endif /* Find the devices we don't have hard coded knowledge about. */ dev_enumerate(); post_code(POST_DEVICE_ENUMERATION_COMPLETE); +#if CONFIG_COLLECT_TIMESTAMPS timestamps[2] = rdtsc(); +#endif /* Now compute and assign the bus resources. */ dev_configure(); post_code(POST_DEVICE_CONFIGURATION_COMPLETE); +#if CONFIG_COLLECT_TIMESTAMPS timestamps[3] = rdtsc(); +#endif /* Now actually enable devices on the bus */ dev_enable(); +#if CONFIG_COLLECT_TIMESTAMPS timestamps[4] = rdtsc(); +#endif /* And of course initialize devices on the bus */ dev_initialize(); post_code(POST_DEVICES_ENABLED); +#if CONFIG_COLLECT_TIMESTAMPS timestamps[5] = rdtsc(); +#endif + #if CONFIG_WRITE_HIGH_TABLES == 1 cbmem_initialize(); #if CONFIG_CONSOLE_CBMEM |