diff options
Diffstat (limited to 'src/boot/loader_l2_setup.S')
| -rw-r--r-- | src/boot/loader_l2_setup.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/boot/loader_l2_setup.S b/src/boot/loader_l2_setup.S new file mode 100644 index 00000000..99da6d5c --- /dev/null +++ b/src/boot/loader_l2_setup.S @@ -0,0 +1,57 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/boot/loader_l2_setup.S $ */ +/* */ +/* OpenPOWER sbe Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2015,2016 */ +/* */ +/* */ +/* Licensed under the Apache License, Version 2.0 (the "License"); */ +/* you may not use this file except in compliance with the License. */ +/* You may obtain a copy of the License at */ +/* */ +/* http://www.apache.org/licenses/LICENSE-2.0 */ +/* */ +/* Unless required by applicable law or agreed to in writing, software */ +/* distributed under the License is distributed on an "AS IS" BASIS, */ +/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ +/* implied. See the License for the specific language governing */ +/* permissions and limitations under the License. */ +/* */ +/* IBM_PROLOG_END_TAG */ + .nolist +#include "pk.h" + .list + +### **************************************************************************** +### Do the initial setup for base loader +### +### **************************************************************************** + +__base_loader_setup: + + ## Set up PowerPC EABI constant registers. + + _liw %r2, _SDA2_BASE_ + _liw %r13, _SDA_BASE_ + + ## The stack pointer is initialized for use by the remainder of the + ## initialization. The linker script defines the initial stack area. + ## + ## Stacks are always 8-byte aligned. A '0' is stored at the + ## stack pointer to indicate the end of the stack chain. Stack frames + ## always consist of at least 8 bytes - the backchain pointer and the + ## slot above the backchain pointer for the callee's LR. + + _liw %r1, _BASE_LOADER_STACK_LIMIT + _clrfield %r1, %r1, 3, 29 # 8-byte align + li %r3, 0 + li %r4, 0 + stvd %r3, -8(%r1) + + ## Call the base loader + bl base_loader + + .epilogue __base_loader_setup |
