From 566bc155acac0ef8f2826920244713f10044f951 Mon Sep 17 00:00:00 2001 From: Giovanni Di Sirio Date: Tue, 16 Feb 2016 09:53:03 +0000 Subject: Start of tree reorganization. git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8897 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/common/startup/e200/devices/SPC56ELxx/boot.s | 408 ++++++++++++++++++++++++ 1 file changed, 408 insertions(+) create mode 100644 os/common/startup/e200/devices/SPC56ELxx/boot.s (limited to 'os/common/startup/e200/devices/SPC56ELxx/boot.s') diff --git a/os/common/startup/e200/devices/SPC56ELxx/boot.s b/os/common/startup/e200/devices/SPC56ELxx/boot.s new file mode 100644 index 000000000..1508f0c17 --- /dev/null +++ b/os/common/startup/e200/devices/SPC56ELxx/boot.s @@ -0,0 +1,408 @@ +/* + ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio. + + This file is part of ChibiOS. + + ChibiOS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file SPC56ELxx/boot.s + * @brief SPC56ELxx boot-related code. + * + * @addtogroup PPC_BOOT + * @{ + */ + +#include "boot.h" + +#if !defined(__DOXYGEN__) + + /* BAM record.*/ + .section .boot, "ax" + +#if BOOT_USE_VLE + .long 0x015A0000 +#else + .long 0x005A0000 +#endif + .long _reset_address + + .align 2 + .globl _reset_address + .type _reset_address, @function +_reset_address: + bl _coreinit + bl _ivinit + +#if BOOT_RELOCATE_IN_RAM + /* + * Image relocation in RAM. + */ + lis %r4, __ram_reloc_start__@h + ori %r4, %r4, __ram_reloc_start__@l + lis %r5, __ram_reloc_dest__@h + ori %r5, %r5, __ram_reloc_dest__@l + lis %r6, __ram_reloc_end__@h + ori %r6, %r6, __ram_reloc_end__@l +.relloop: + cmpl cr0, %r4, %r6 + bge cr0, .relend + lwz %r7, 0(%r4) + addi %r4, %r4, 4 + stw %r7, 0(%r5) + addi %r5, %r5, 4 + b .relloop +.relend: + lis %r3, _boot_address@h + ori %r3, %r3, _boot_address@l + mtctr %r3 + bctrl +#else + b _boot_address +#endif + +#if BOOT_PERFORM_CORE_INIT + .align 2 +_ramcode: + tlbwe + isync + blr +#endif /* BOOT_PERFORM_CORE_INIT */ + + .align 2 +_coreinit: +#if BOOT_PERFORM_CORE_INIT + /* + * Invalidating all TLBs except TLB0. + */ + lis %r3, 0 + mtspr 625, %r3 /* MAS1 */ + mtspr 626, %r3 /* MAS2 */ + mtspr 627, %r3 /* MAS3 */ + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(1))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(2))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(3))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(4))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(5))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(6))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(7))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(8))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(9))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(10))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(11))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(12))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(13))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(14))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + lis %r3, (MAS0_TBLMAS_TBL | MAS0_ESEL(15))@h + mtspr 624, %r3 /* MAS0 */ + tlbwe + + /* + * TLB1 allocated to internal RAM. + */ + lis %r3, TLB1_MAS0@h + mtspr 624, %r3 /* MAS0 */ + lis %r3, TLB1_MAS1@h + ori %r3, %r3, TLB1_MAS1@l + mtspr 625, %r3 /* MAS1 */ + lis %r3, TLB1_MAS2@h + ori %r3, %r3, TLB1_MAS2@l + mtspr 626, %r3 /* MAS2 */ + lis %r3, TLB1_MAS3@h + ori %r3, %r3, TLB1_MAS3@l + mtspr 627, %r3 /* MAS3 */ + tlbwe + + /* + * TLB2 allocated to internal Peripherals Bridge A. + */ + lis %r3, TLB2_MAS0@h + mtspr 624, %r3 /* MAS0 */ + lis %r3, TLB2_MAS1@h + ori %r3, %r3, TLB2_MAS1@l + mtspr 625, %r3 /* MAS1 */ + lis %r3, TLB2_MAS2@h + ori %r3, %r3, TLB2_MAS2@l + mtspr 626, %r3 /* MAS2 */ + lis %r3, TLB2_MAS3@h + ori %r3, %r3, TLB2_MAS3@l + mtspr 627, %r3 /* MAS3 */ + tlbwe + + /* + * TLB3 allocated to internal Peripherals Bridge B. + */ + lis %r3, TLB3_MAS0@h + mtspr 624, %r3 /* MAS0 */ + lis %r3, TLB3_MAS1@h + ori %r3, %r3, TLB3_MAS1@l + mtspr 625, %r3 /* MAS1 */ + lis %r3, TLB3_MAS2@h + ori %r3, %r3, TLB3_MAS2@l + mtspr 626, %r3 /* MAS2 */ + lis %r3, TLB3_MAS3@h + ori %r3, %r3, TLB3_MAS3@l + mtspr 627, %r3 /* MAS3 */ + tlbwe + + /* + * TLB4 allocated to on-platform peripherals. + */ + lis %r3, TLB4_MAS0@h + mtspr 624, %r3 /* MAS0 */ + lis %r3, TLB4_MAS1@h + ori %r3, %r3, TLB4_MAS1@l + mtspr 625, %r3 /* MAS1 */ + lis %r3, TLB4_MAS2@h + ori %r3, %r3, TLB4_MAS2@l + mtspr 626, %r3 /* MAS2 */ + lis %r3, TLB4_MAS3@h + ori %r3, %r3, TLB4_MAS3@l + mtspr 627, %r3 /* MAS3 */ + tlbwe + + /* + * TLB5 allocated to on-platform peripherals. + */ + lis %r3, TLB5_MAS0@h + mtspr 624, %r3 /* MAS0 */ + lis %r3, TLB5_MAS1@h + ori %r3, %r3, TLB5_MAS1@l + mtspr 625, %r3 /* MAS1 */ + lis %r3, TLB5_MAS2@h + ori %r3, %r3, TLB5_MAS2@l + mtspr 626, %r3 /* MAS2 */ + lis %r3, TLB5_MAS3@h + ori %r3, %r3, TLB5_MAS3@l + mtspr 627, %r3 /* MAS3 */ + tlbwe + + /* + * RAM clearing, this device requires a write to all RAM location in + * order to initialize the ECC detection hardware, this is going to + * slow down the startup but there is no way around. + */ + xor %r0, %r0, %r0 + xor %r1, %r1, %r1 + xor %r2, %r2, %r2 + xor %r3, %r3, %r3 + xor %r4, %r4, %r4 + xor %r5, %r5, %r5 + xor %r6, %r6, %r6 + xor %r7, %r7, %r7 + xor %r8, %r8, %r8 + xor %r9, %r9, %r9 + xor %r10, %r10, %r10 + xor %r11, %r11, %r11 + xor %r12, %r12, %r12 + xor %r13, %r13, %r13 + xor %r14, %r14, %r14 + xor %r15, %r15, %r15 + xor %r16, %r16, %r16 + xor %r17, %r17, %r17 + xor %r18, %r18, %r18 + xor %r19, %r19, %r19 + xor %r20, %r20, %r20 + xor %r21, %r21, %r21 + xor %r22, %r22, %r22 + xor %r23, %r23, %r23 + xor %r24, %r24, %r24 + xor %r25, %r25, %r25 + xor %r26, %r26, %r26 + xor %r27, %r27, %r27 + xor %r28, %r28, %r28 + xor %r29, %r29, %r29 + xor %r30, %r30, %r30 + xor %r31, %r31, %r31 + lis %r4, __ram_start__@h + ori %r4, %r4, __ram_start__@l + lis %r5, __ram_end__@h + ori %r5, %r5, __ram_end__@l +.cleareccloop: + cmpl %cr0, %r4, %r5 + bge %cr0, .cleareccend + stmw %r16, 0(%r4) + addi %r4, %r4, 64 + b .cleareccloop +.cleareccend: +#endif /* BOOT_PERFORM_CORE_INIT */ + + /* + * Special function registers clearing, required in order to avoid + * possible problems with lockstep mode. + */ + mtcrf 0xFF, %r31 + mtspr 9, %r31 /* CTR */ + mtspr 22, %r31 /* DEC */ + mtspr 26, %r31 /* SRR0-1 */ + mtspr 27, %r31 + mtspr 54, %r31 /* DECAR */ + mtspr 58, %r31 /* CSRR0-1 */ + mtspr 59, %r31 + mtspr 61, %r31 /* DEAR */ + mtspr 256, %r31 /* USPRG0 */ + mtspr 272, %r31 /* SPRG1-7 */ + mtspr 273, %r31 + mtspr 274, %r31 + mtspr 275, %r31 + mtspr 276, %r31 + mtspr 277, %r31 + mtspr 278, %r31 + mtspr 279, %r31 + mtspr 285, %r31 /* TBU */ + mtspr 284, %r31 /* TBL */ +#if 0 + mtspr 318, %r31 /* DVC1-2 */ + mtspr 319, %r31 +#endif + mtspr 562, %r31 /* DBCNT */ + mtspr 570, %r31 /* MCSRR0 */ + mtspr 571, %r31 /* MCSRR1 */ + mtspr 604, %r31 /* SPRG8-9 */ + mtspr 605, %r31 + +#if BOOT_PERFORM_CORE_INIT + /* + * *Finally* the TLB0 is re-allocated to flash, note, the final phase + * is executed from RAM. + */ + lis %r3, TLB0_MAS0@h + mtspr 624, %r3 /* MAS0 */ + lis %r3, TLB0_MAS1@h + ori %r3, %r3, TLB0_MAS1@l + mtspr 625, %r3 /* MAS1 */ + lis %r3, TLB0_MAS2@h + ori %r3, %r3, TLB0_MAS2@l + mtspr 626, %r3 /* MAS2 */ + lis %r3, TLB0_MAS3@h + ori %r3, %r3, TLB0_MAS3@l + mtspr 627, %r3 /* MAS3 */ + mflr %r4 + lis %r6, _ramcode@h + ori %r6, %r6, _ramcode@l + lis %r7, 0x40010000@h + mtctr %r7 + lwz %r3, 0(%r6) + stw %r3, 0(%r7) + lwz %r3, 4(%r6) + stw %r3, 4(%r7) + lwz %r3, 8(%r6) + stw %r3, 8(%r7) + bctrl + mtlr %r4 +#endif /* BOOT_PERFORM_CORE_INIT */ + + /* + * Branch prediction enabled. + */ + li %r3, BOOT_BUCSR_DEFAULT + mtspr 1013, %r3 /* BUCSR */ + + /* + * Cache invalidated and then enabled. + */ + li %r3, LICSR1_ICINV + mtspr 1011, %r3 /* LICSR1 */ +.inv: mfspr %r3, 1011 /* LICSR1 */ + andi. %r3, %r3, LICSR1_ICINV + bne .inv + lis %r3, BOOT_LICSR1_DEFAULT@h + ori %r3, %r3, BOOT_LICSR1_DEFAULT@l + mtspr 1011, %r3 /* LICSR1 */ + + blr + + /* + * Exception vectors initialization. + */ + .align 2 +_ivinit: + /* MSR initialization.*/ + lis %r3, BOOT_MSR_DEFAULT@h + ori %r3, %r3, BOOT_MSR_DEFAULT@l + mtMSR %r3 + + /* IVPR initialization.*/ + lis %r3, __ivpr_base__@h + ori %r3, %r3, __ivpr_base__@l + mtIVPR %r3 + + /* IVORs initialization.*/ + lis %r3, _unhandled_exception@h + ori %r3, %r3, _unhandled_exception@l + + mtspr 400, %r3 /* IVOR0-15 */ + mtspr 401, %r3 + mtspr 402, %r3 + mtspr 403, %r3 + mtspr 404, %r3 + mtspr 405, %r3 + mtspr 406, %r3 + mtspr 407, %r3 + mtspr 408, %r3 + mtspr 409, %r3 + mtspr 410, %r3 + mtspr 411, %r3 + mtspr 412, %r3 + mtspr 413, %r3 + mtspr 414, %r3 + mtspr 415, %r3 + mtspr 528, %r3 /* IVOR32-34 */ + mtspr 529, %r3 + mtspr 530, %r3 + + blr + + .section .handlers, "ax" + + /* + * Unhandled exceptions handler. + */ + .weak _unhandled_exception + .type _unhandled_exception, @function +_unhandled_exception: + b _unhandled_exception + +#endif /* !defined(__DOXYGEN__) */ + +/** @} */ -- cgit v1.2.3