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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-11-30 12:21:34 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2014-12-01 14:57:44 +1100 |
| commit | 9594a715b50c338f1261e88c12c120cf8e5b8bba (patch) | |
| tree | 5e5a07267866843ae9b0077122300bc3396ee2e5 /asm | |
| parent | 566f139cffdcef5d1ce679cc1a7cfd0c7cde3f78 (diff) | |
| download | skiboot-9594a715b50c338f1261e88c12c120cf8e5b8bba.zip skiboot-9594a715b50c338f1261e88c12c120cf8e5b8bba.tar.gz skiboot-9594a715b50c338f1261e88c12c120cf8e5b8bba.tar.bz2 | |
Add tweaks to work in Mambo simulator
Mambo doesn't implement various things such as PBA SCOMs, LPC,
ChipTOD, etc... It also provides a special console hook.
This adds detection of Mambo via the /mambo node, and enables
us to boot all the way to Linux.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'asm')
| -rw-r--r-- | asm/misc.S | 19 |
1 files changed, 19 insertions, 0 deletions
@@ -50,3 +50,22 @@ _mcount: mflr %r4 b __mcount_stack_check #endif + +.global mambo_read +mambo_read: +#define SIM_READ_CONSOLE_CODE 60 + li %r3,SIM_READ_CONSOLE_CODE + .long 0x000eaeb0 + extsw %r3,%r3 + blr + +.global mambo_write +mambo_write: +#define SIM_WRITE_CONSOLE_CODE 0 + li %r6,0 + mr %r5,%r4 + mr %r4,%r3 + li %r3,SIM_WRITE_CONSOLE_CODE + .long 0x000eaeb0 + blr + |