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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>
This commit is contained in:
Rudolf Marek 2012-04-24 16:01:24 +02:00 committed by Patrick Georgi
parent 02c204706f
commit 3294a0f1ca
1 changed files with 13 additions and 1 deletions
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14
src/boot/hardwaremain.c
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@ -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