diff options
Diffstat (limited to 'sbe/boot/loader_l2.c')
| -rw-r--r-- | sbe/boot/loader_l2.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/sbe/boot/loader_l2.c b/sbe/boot/loader_l2.c deleted file mode 100644 index b08a2278..00000000 --- a/sbe/boot/loader_l2.c +++ /dev/null @@ -1,88 +0,0 @@ -/* IBM_PROLOG_BEGIN_TAG */ -/* This is an automatically generated prolog. */ -/* */ -/* $Source: sbe/boot/loader_l2.c $ */ -/* */ -/* 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 */ -#include "sbeXipUtils.H" - -// Load section to destination address -int32_t loadSection( P9XipSection * i_section, uint64_t *i_destAddr ) -{ - uint32_t idx = 0; - uint64_t *seepromAddr = (uint64_t *)( g_headerAddr + i_section->iv_offset); - uint32_t sectionSize = i_section->iv_size; - for( idx = 0; idx < sectionSize; idx += 8 ) - { - *i_destAddr = *seepromAddr; - i_destAddr++; seepromAddr++; - - } - return 0; -} - -// Function to load base image into PIBMEM -int32_t base_loader() -{ - int32_t rc = 0; - P9XipHeader *hdr = getXipHdr(); - - uint64_t *pibMemAddr = (uint64_t *)g_pibMemAddr; - uint64_t *tempPibMemAddr = (uint64_t *)g_pibMemAddr; - uint64_t *pibEndAddr = (uint64_t *)(SBE_LOADER_BASE_ORIGIN); - - // Initialise complete PIBMEM with 0 - // Though this is inefficient, this is quick fix to solve the - // HW write of data which is not 8 byte alligned. All write which - // are not 8 byte alligned, translates to read-modify-write. So - // if code does a write for 4 byte, first HW will read 8 bytes. If - // there is no data written there earlier and random data is present - // it can cause ecc errors. - // TODO via RTC 158797 - // Though we may be able to optimise it, but than we have to put the - // logic in loadSection function which is not desired. So currently - // initialising all PIBMEM. If performance become concern during initial - // SBE load, we can optimise this. - // We have three options here in optimisation - // 1. Put this logic in SEEPROM loader ( pmloader ). This was we can - // reclaim space taken by base loader as stack/bss can grow in base - // loader section after image load. - // 2. Keep this code in PIBMEM. But do not initialise the memory taken - // by base image. - // 3. Do what is done in option 1 but only initialise memoty after base - // section to end of PIBMEM. This will involve some more hardcoding - // in seeprom loader. - // My preference will be option 1 but depends upon performance goals. - for( ; tempPibMemAddr < pibEndAddr; tempPibMemAddr++ ) - { - *tempPibMemAddr = 0; - } - - loadSection(&(hdr->iv_section[P9_XIP_SECTION_SBE_BASE]), pibMemAddr); - // Set the IVPR register. This is required so that interrupt vector table - // points to pk interfaces. - uint64_t data = (uint64_t)(SBE_BASE_ORIGIN) << 32; - PPE_STVD(g_ivprLoc, data); - // Jump to pk boot function - uint32_t addr = hdr->iv_kernelAddr; - JUMP_TO_ADDR(addr); - - return rc; -} |
