diff options
Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc8xx/vectors/README')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/mpc8xx/vectors/README | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc8xx/vectors/README b/c/src/lib/libcpu/powerpc/mpc8xx/vectors/README new file mode 100644 index 0000000000..974c8bdd43 --- /dev/null +++ b/c/src/lib/libcpu/powerpc/mpc8xx/vectors/README @@ -0,0 +1,23 @@ +# +# $Id$ +# + +The location of the vectors file object is critical. + +From the comments at the head of vectors.S: + + The issue with this file is getting it loaded at the right place. + The first vector MUST be at address 0x????0100. + How this is achieved is dependant on the tool chain. + +... + + The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the + offset from 0x????0000 to the first location in the file. This + will be either 0x0000 or 0xfff0. + +The eth_comm BSP defines PPC_VECTOR_FILE_BASE to be 0x00000000. +The MBX8xx BSP also defines PPC_VECTOR_FILE_BASE to be 0x00000000. +Change these values to 0xFFF00000 if your are implementing an actual +boot rom. + |