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Diffstat (limited to 'sbe/boot/otprom_init.S')
| -rw-r--r-- | sbe/boot/otprom_init.S | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/sbe/boot/otprom_init.S b/sbe/boot/otprom_init.S deleted file mode 100644 index 8d7c9979..00000000 --- a/sbe/boot/otprom_init.S +++ /dev/null @@ -1,178 +0,0 @@ -# IBM_PROLOG_BEGIN_TAG -# This is an automatically generated prolog. -# -# $Source: sbe/boot/otprom_init.S $ -# -# OpenPOWER sbe Project -# -# Contributors Listed Below - COPYRIGHT 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 "pk.h" -.set r0 , 0 -.set r1 , 1 -.set r2 , 2 -.set r3 , 3 -.set r4 , 4 -.set r5 , 5 -.set r6 , 6 -.set r7 , 7 -.set r8 , 8 -.set d0 , 0 -.set d2 , 2 -.set d7 , 7 -.global __reserved -__reserved: -############################################################# -################## OTPROM location data contents ############ -# SBE Seeprom Config_0 18068 -# SBE Seeprom Config_1 18069 -# SBE Seeprom Config_2 1806A -# SBE Seeprom Config_3 1806B -# Magic number stored in OTP 1806C -# Reserved 1806D -# Reserved 1806E -# Reserved 1806F -# 0x0040 : otprom loader -############################################################# -_start: -#lis r4 , 0x50 #dummy instruction -.org __reserved + 0x0040 -.macro .pm_otprom_fixed_system - .section .fixed, "a", @progbits -__seeprom0_config_reg: - .quad 0x80A91C7100000000 -__seeprom1_config_reg: - .quad 0x80AB1C7100001C71 -__seeprom2_config_reg: - .quad 0x80AD1C71000038E2 -__seeprom3_config_reg: - .quad 0x80AF1C7100005553 -__otprom_magic_num: - .quad 0x584950205345504D -__sbe_config_reg: - .quad 0x000A800030000000 - .endm -oos_start: #R4 --> A0000 R5 --> 5003F R6 --> C000_0818 - lis r4 , 0xA - ori r4 , r4 , 0x0 - stvd d0 , 1(r4) #Write reset reg . A0001 - lis r5 , 0x5 #Check the validity of scratch reg and then program the bit rate div - ori r5 , r5 , 0x0000 - lvd d2 , 0x3F(r5) #loads scratch_8 and updates R5 to scratch_1 - bb0wi r2 , 1 , oos_load_const_brd #checks if valid bit (bit1) is 1 if yes continue else branch - lvd d2 , 0x39(r5) - andis. r2 , r2 , 0xffff #delete last 2 bytes Confirmed first 2 bytes has Bit rate divisor - -oos_write_mode_reg: - lvd d0 , 6(r4) #D0 --> old mode reg and D2 --> has new brd - andi. r0 , r0 , 0xffff - or r0 , r0 , r2 - stvd d0 , 6(r4) #Store mode register - lis r6 , 0xc000 - ori r6 , r6, 0x0818 #Load clear address of local register FI2C_CFG - li r0 , 0xfff #Create the Clear mask - lis r1 , 0xf000 - stvd d0 , 0(r6) #write to clear register of local register - rlwinm r3, r2, 12 , 0 , 3 #First move last nibble to R3 0:3 - rlwinm r2, r2, 12 , 20, 31 #Store bit rate div in 20:35 location of local register 20:31 - stvd d2 , -8(r6) #Set register = C0000810 - b oos_write_mode_done - -oos_load_const_brd: - lis r2 , 0x3 #load constant BRD = 3 to first 2 bytes of R2 - b oos_write_mode_reg - -oos_write_mode_done: - -oos_force_stop_to_both_ports: - lis r0 , 0x8000 #load 0x80000000 for port busy register write - stvd d0 , 0xE(r4) #Write port busy register to clear - andi. r0 , r0 ,0 #stop_command = 0x1000_0020_0000_0000 - andi. r1 , r1 , 0 - oris r0 , r0 , 0x1000 - ori r0 , r0 , 0x0020 - stvd d0 , 0(r4) #Write control register with Stop command - -oos_poll_status_bit_0: - lvd d2 , 2(r4) #Read Status register - bb1wi r3 , 0xc , oos_poll_status_bit_0 - ori r0 , r0 , 0x0200 #stop_command = 0x1000_0220_0000_0000 - stvd d0 , 0(r4) #write control register with stop command to port 1 - -oos_poll_status_bit_1: - lvd d2 , 2(r4) - bb1wi r3 , 0xc , oos_poll_status_bit_1 - lis r0 , 0xd8a9 - ori r0 , r0 , 0x0090 #change the port number later after checking from the scratch register. Add the seeprom address pointer location by updating the R1 - andi. r1 , r1 , 0x0 #Chose address 0x0 of SEEPROM : 0xA8 - -oos_chk_port_num: - lvd d2 , 0x8(r5) #Read the port number from Selfboot control / status register :: - bb0wi r2 , 17 , oos_sel_prim_sprm #Check if backup seeprom select is '1' bit_17 according to Srinivas - ori r0 , r0 , 0x0200 #enable backup_sprm port - lvd d7, -24(r6) #load SBE_CONFIG local reg - oris r8 , r8 , 0x0200 #make bit 38 of sbe_config_reg bit '1'. (C0000800) - stvd d7, -24(r6) #Store SBE_CONFIG local reg - -oos_sel_prim_sprm: - stvd d0 , 0(r4) #write control register - -oos_poll_status_bit_2: - lvd d2 , 2(r4) #poll status reg - bb1wi r3 , 0xc , oos_poll_status_bit_2 - lvd d0 , 3(r4) #Read data reg to get magic number - -oss_load_constant_magic_num: #Magic number of seeprom = 0x584950205345504D - lis r2 , 0x5849 #load constant otprom magic number - ori r2 , r2 , 0x5020 - lis r3 , 0x5345 - ori r3 , r3, 0x504d - cmplwbc 0, 2, r0, r2, oos_cmp_magic_fail - cmplwbc 0, 2, r1, r3, oos_cmp_magic_fail - lis r4 , 0x0001 #OTPROM address = 0xZZZZ_YYYY PIB_addr (R4 = 18070) - ori r4 , r4 , 0x8068 - lis r5 , 0xc000 #local_reg_addr (R5 = C0000860) - ori r5 , r5 , 0x0860 - lvd d0 , 0(r4) - stvd d0 , 0(r5) #Seeprom_0 - lvd d0 , 1(r4) - stvd d0 , 32(r5) #Seeprom_1 - lvd d0 , 2(r4) - stvd d0 , 64(r5) #Seeprom_2 - lvd d0 , 3(r4) - stvd d0 , 96(r5) #Seeprom_3 - lvd d0 , 5(r4) #SBE Config - stvd d0 , -96(r5) - ##### Branch to SEEPROM ################### - lis r4 , 0x8000 #Go and fetch the branch address from 0x8000_0001 - ori r4 , r4 , 0x0008 - lvd d0 , 0(r4) - mtctr r1 - bctr #Branch to fetched address - ##### Branch to SEEPROM ################### - trap #FIXME hve to give branch to SEEPROM - -oos_cmp_magic_fail: - lis r5 , 0x5 #PIB_addr (R5 = 0x00050008) - ori r5 , r5 , 0x0000 - lvd d0 , 8(r5) - andi. r1 , r1 , 0xfff0 - ori r1 , r1 , 0x000e #59:63 : Error message : E = Magic number mismatch - stvd d0 ,8(r5) - trap - -.pm_otprom_fixed_system |
