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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/boot/loader_l1.S $ */
/* */
/* OpenPOWER sbe Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016,2018 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* 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"
#include "sbe_link.H"
.list
### ****************************************************************************
### .loader_text - This section contains l1 loader code
### @TODO via RTC 136315
### It also contains vector code. We can remove vector code
### once OTPROM support for simics is in.
### ****************************************************************************
.section .loader_text, "ax", @progbits
.global _pibmemRepair
__vectors:
############################################################
# 0x0040 : System Reset
############################################################
.org __vectors + 0x0040
__system_reset:
b __l1Loader
__l1Loader:
# Update 50009 ( sbe status register) to show sbe in seeprom loader
_liw %r5, 0x50009
_liw %r0, SBE_CODE_SEEPROM_START_MSG
li r1, 0x00
stvd d0, 0(r5)
# If hreset of SBE, jump directly to kernel, as all the pibmem contents
# are already populated
_liw %r3, 0x50008
lvd d3,0(r3)
bb1wi r3,13,jump_to_kernel
bl _pibmemRepair
_liw %r3, SBE_LOADER_BASE_SECTION # Base Loader Section Location
_liw %r4, SBE_LOADER_BASE_ORIGIN # dest
_liw %r9, SBE_SEEPROM_BASE_ORIGIN
lwz r5, 4(r3) #size of image in bytes
srawi r5, r5, 3 # Number of double word transfers
mtctr r5 # set the counter for loop
lwz r8, 0(r3) # offset of l2loader section
adde r8, r8, r9 # add base address to offset to get absolute address
copy_loop:
lvd d28, 0(r8)
stvd d28, 0(r4)
addi r8, r8, 8
addi r4, r4, 8
bdnz copy_loop
# initilaise empty section of L1 loader with 0
bl __initPibmemL1Area
############################################################
# SBE entry function is 4 byte number in image header
############################################################
_liw %r3, SBE_SEEPROM_BASE_ORIGIN + SBE_LOADER_ENTRY_HEADER_OFFSET
lwz r6, 0(r3)
mtlr r6
blr
.epilogue __l1Loader
# initialise the PIBMEM section for l1 loader with 0
__initPibmemL1Area:
_liw %r3, SBE_LOADER_BASE_SECTION # Base Loader Section Location
_liw %r4, SBE_LOADER_BASE_ORIGIN # dest
lwz r5, 4(r3) #size of image in bytes
_liw %r6, SBE_LOADER_BASE_LENGTH #Max size of loader
add r4, r4, r5
subf r5, r5, r6
srawi r5, r5, 3 # Number of double word transfers
mtctr r5 # set the counter for loop
li r28, 0
li r29, 0
copy_loop_init:
stvd d28, 0(r4)
addi r4, r4, 8
bdnz copy_loop_init
blr
jump_to_kernel:
# setup IVPR before jumping to kernel
_liw %r8, SBE_BASE_ORIGIN
li r9,0
_liw %r10, 0xC0000160
stvd d8,0(r10)
############################################################
# SBE entry function is 4 byte number in image header
############################################################
_liw %r3, SBE_SEEPROM_BASE_ORIGIN + SBE_KERNEL_ENTRY_HEADER_OFFSET
lwz r6, 0(r3)
mtlr r6
blr
#include "pibmem_repair.S"
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