Add a capability for mainboard-specific posting.
Some mainboards have really nice capabilities for posting, beyond simple POST cards. Further, some can not use a POST card. This change defines a weak symbol (mainboard_post) that can be overridden by a real mainboard_post function. If, for example, you'd like to do something fancy before the payload starts, you can add this to mainboard.c: void mainboard_post(u8 value) { switch(value){ case POST_TIME_TO_PARTY: some_fancy_lights(); break; } } Maybe the post function should be an entry in the device. We're beginning to over-use weak symbols. BUG=None TEST=Build and boot a google chromebook. Observe that it still works. Use it to drive some pretty lights. Change-Id: I3512d2ec34a66c747287191851c3f68b6a7cc1b2 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/1397 Tested-by: build bot (Jenkins)
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@ -24,6 +24,20 @@
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/* Write POST information */
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/* someday romcc will be gone. */
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#ifndef __ROMCC__
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/* Some mainboards have very nice features beyond just a simple display.
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* They can override this function.
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*/
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void __attribute__((weak)) mainboard_post(uint8_t value)
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{
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}
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#else
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/* This just keeps the number of #ifs to a minimum */
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#define mainboard_post(x)
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#endif
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void post_code(uint8_t value)
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{
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#if !CONFIG_NO_POST
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@ -34,4 +48,5 @@ void post_code(uint8_t value)
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#endif
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outb(value, CONFIG_POST_PORT);
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#endif
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mainboard_post(value);
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}
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@ -69,6 +69,8 @@ extern int console_loglevel;
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#ifndef __ROMCC__
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void console_init(void);
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void post_code(u8 value);
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/* this function is weak and can be overridden by a mainboard function. */
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void mainboard_post(u8 value);
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void __attribute__ ((noreturn)) die(const char *msg);
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int do_printk(int msg_level, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
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