Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Yusdi Santoso <yusdi_santoso@adaptec.com>master
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/* |
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* (C) Copyright 2001 |
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* Thomas Koeller, tkoeller@gmx.net
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef __ASSEMBLY__ |
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#define __ASSEMBLY__ 1 |
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#endif |
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#include <asm-offsets.h> |
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#include <config.h> |
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#include <asm/processor.h> |
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#include <mpc824x.h> |
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#include <ppc_asm.tmpl> |
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#if defined(USE_DINK32) |
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/* We are running from RAM, so do not clear the MCCR1_MEMGO bit! */ |
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#define MCCR1VAL ((CONFIG_SYS_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CONFIG_SYS_ROMFAL << MCCR1_ROMFAL_SHIFT) | MCCR1_MEMGO) |
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#else |
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#define MCCR1VAL (CONFIG_SYS_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CONFIG_SYS_ROMFAL << MCCR1_ROMFAL_SHIFT) |
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#endif |
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.text |
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/* Values to program into memory controller registers */ |
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tbl: .long MCCR1, MCCR1VAL |
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.long MCCR2, CONFIG_SYS_REFINT << MCCR2_REFINT_SHIFT |
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.long MCCR3
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.long (((CONFIG_SYS_BSTOPRE & 0x000000f0) >> 4) << MCCR3_BSTOPRE2TO5_SHIFT) | \ |
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(CONFIG_SYS_REFREC << MCCR3_REFREC_SHIFT) | \ |
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(CONFIG_SYS_RDLAT << MCCR3_RDLAT_SHIFT) |
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.long MCCR4
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.long (CONFIG_SYS_PRETOACT << MCCR4_PRETOACT_SHIFT) | (CONFIG_SYS_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) | \ |
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(CONFIG_SYS_REGISTERD_TYPE_BUFFER << 20) | \ |
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(((CONFIG_SYS_BSTOPRE & 0x00000300) >> 8) << MCCR4_BSTOPRE0TO1_SHIFT ) | \ |
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((CONFIG_SYS_SDMODE_CAS_LAT << 4) | (CONFIG_SYS_SDMODE_WRAP << 3) | \ |
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(CONFIG_SYS_SDMODE_BURSTLEN) << MCCR4_SDMODE_SHIFT) | \ |
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(CONFIG_SYS_ACTTORW << MCCR4_ACTTORW_SHIFT) | \ |
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((CONFIG_SYS_BSTOPRE & 0x0000000f) << MCCR4_BSTOPRE6TO9_SHIFT ) |
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.long MSAR1
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.long (((CONFIG_SYS_BANK0_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK1_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK2_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK3_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24) |
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.long EMSAR1
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.long (((CONFIG_SYS_BANK0_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK1_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK2_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK3_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24) |
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.long MSAR2
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.long (((CONFIG_SYS_BANK4_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK5_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK6_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK7_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24) |
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.long EMSAR2
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.long (((CONFIG_SYS_BANK4_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK5_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK6_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK7_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24) |
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.long MEAR1
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.long (((CONFIG_SYS_BANK0_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK1_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK2_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK3_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24) |
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.long EMEAR1
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.long (((CONFIG_SYS_BANK0_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK1_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK2_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK3_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24) |
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.long MEAR2
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.long (((CONFIG_SYS_BANK4_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK5_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK6_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK7_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24) |
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.long EMEAR2
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.long (((CONFIG_SYS_BANK4_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \ |
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(((CONFIG_SYS_BANK5_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \ |
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(((CONFIG_SYS_BANK6_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \ |
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(((CONFIG_SYS_BANK7_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24) |
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.long 0
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/* |
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* Early CPU initialization. Set up memory controller, so we can access any RAM at all. This |
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* must be done in assembly, since we have no stack at this point. |
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*/ |
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.global early_init_f
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early_init_f: |
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mflr r10 |
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/* basic memory controller configuration */ |
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lis r3, CONFIG_ADDR_HIGH |
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lis r4, CONFIG_DATA_HIGH |
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bl lab |
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lab: mflr r5 |
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lwzu r0, tbl - lab(r5) |
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loop: lwz r1, 4(r5) |
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stwbrx r0, 0, r3 |
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eieio |
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stwbrx r1, 0, r4 |
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eieio |
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lwzu r0, 8(r5) |
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cmpli cr0, 0, r0, 0 |
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bne cr0, loop |
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/* set bank enable bits */ |
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lis r0, MBER@h
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ori r0, 0, MBER@l
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li r1, CONFIG_SYS_BANK_ENABLE |
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stwbrx r0, 0, r3 |
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eieio |
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stb r1, 0(r4) |
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eieio |
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/* delay loop */ |
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lis r0, 0x0003 |
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mtctr r0 |
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delay: bdnz delay |
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/* enable memory controller */ |
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lis r0, MCCR1@h
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ori r0, 0, MCCR1@l
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stwbrx r0, 0, r3 |
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eieio |
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lwbrx r0, 0, r4 |
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oris r0, 0, MCCR1_MEMGO@h
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stwbrx r0, 0, r4 |
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eieio |
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/* set up stack pointer */ |
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lis r1, CONFIG_SYS_INIT_SP_OFFSET@h
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ori r1, r1, CONFIG_SYS_INIT_SP_OFFSET@l
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mtlr r10 |
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blr |
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