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| author | Matthew Veety <mveety@gmail.com> | 2014-05-16 10:56:23 -0400 |
|---|---|---|
| committer | Matthew Veety <mveety@gmail.com> | 2014-05-16 10:56:23 -0400 |
| commit | eb687adecd365876d6b6918a9ee4f8e8e7f205f6 (patch) | |
| tree | a8fd746c6a889841a955e166224fc247b4e077d1 /sys/src/9/bcm/vcore.c | |
| parent | 88c998b2650d684086faca8e65f9b2f67c764b47 (diff) | |
added devgpio (thanks Krystian!). Also added getrevision() to vcore which allows you to get the raspberry pi board revision. I kept in the segment that allows direct access to the gpio memory
Diffstat (limited to 'sys/src/9/bcm/vcore.c')
| -rw-r--r-- | sys/src/9/bcm/vcore.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/src/9/bcm/vcore.c b/sys/src/9/bcm/vcore.c index d4d52d6dc..2b82db238 100644 --- a/sys/src/9/bcm/vcore.c +++ b/sys/src/9/bcm/vcore.c @@ -33,6 +33,7 @@ enum { TagResp = 1<<31, TagGetfwrev = 0x00000001, + TagGetbrdrev = 0x00010002, TagGetmac = 0x00010003, TagGetram = 0x00010005, TagGetpower = 0x00020001, @@ -261,6 +262,15 @@ getfirmware(void) return buf[0]; } +uint +getrevision(void) +{ + u32int buf[1]; + if(vcreq(TagGetbrdrev, buf, 0, sizeof buf) != sizeof buf) + return 0; + return buf[0]; +} + /* * Get ARM ram */ |