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linux/arch/powerpc/kernel/cpu_setup_fsl_booke.S

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powerpc/fsl-booke: Cleanup init/exception setup to be runtime We currently have a few variants of fsl-booke processors (e500v1, e500v2, e500mc, and e200). They all have minor differences that we had previously been handling via ifdefs. To move towards having this support the following changes have been made: * PID1, PID2 only exist on e500v1 & e500v2 and should not be accessed on e500mc or e200. We use MMUCFG[NPIDS] to determine which case we are since we only touch PID1/2 in extremely early init code. * Not all IVORs exist on all the processors so introduce cpu_setup functions for each variant to setup the proper IVORs that are either unique or exist but have some variations between the processors Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-08 08:31:20 -06:00
/*
* This file contains low level CPU setup functions.
* Kumar Gala <galak@kernel.crashing.org>
* Copyright 2009 Freescale Semiconductor, Inc.
*
* Based on cpu_setup_6xx code by
* Benjamin Herrenschmidt <benh@kernel.crashing.org>
*
* This program 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
* 2 of the License, or (at your option) any later version.
*
*/
#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/ppc_asm.h>
powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs Some boot loaders may not enable L1 instruction/data cache. Check if data and instruction caches are enabled, and enable them if needed. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-06-10 15:37:28 -05:00
_GLOBAL(__e500_icache_setup)
mfspr r0, SPRN_L1CSR1
andi. r3, r0, L1CSR1_ICE
bnelr /* Already enabled */
oris r0, r0, L1CSR1_CPE@h
ori r0, r0, (L1CSR1_ICFI | L1CSR1_ICLFR | L1CSR1_ICE)
mtspr SPRN_L1CSR1, r0 /* Enable I-Cache */
isync
blr
_GLOBAL(__e500_dcache_setup)
mfspr r0, SPRN_L1CSR0
andi. r3, r0, L1CSR0_DCE
bnelr /* Already enabled */
msync
isync
li r0, 0
mtspr SPRN_L1CSR0, r0 /* Disable */
msync
isync
li r0, (L1CSR0_DCFI | L1CSR0_CLFC)
mtspr SPRN_L1CSR0, r0 /* Invalidate */
isync
1: mfspr r0, SPRN_L1CSR0
andi. r3, r0, L1CSR0_CLFC
bne+ 1b /* Wait for lock bits reset */
oris r0, r0, L1CSR0_CPE@h
ori r0, r0, L1CSR0_DCE
msync
isync
mtspr SPRN_L1CSR0, r0 /* Enable */
isync
blr
powerpc/fsl-booke: Add support for FSL 64-bit e5500 core The new e5500 core is similar to the e500mc core but adds 64-bit support. We support running it in 32-bit mode as it is identical to the e500mc. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-08 08:32:11 -05:00
#ifdef CONFIG_PPC32
powerpc/fsl-booke: Cleanup init/exception setup to be runtime We currently have a few variants of fsl-booke processors (e500v1, e500v2, e500mc, and e200). They all have minor differences that we had previously been handling via ifdefs. To move towards having this support the following changes have been made: * PID1, PID2 only exist on e500v1 & e500v2 and should not be accessed on e500mc or e200. We use MMUCFG[NPIDS] to determine which case we are since we only touch PID1/2 in extremely early init code. * Not all IVORs exist on all the processors so introduce cpu_setup functions for each variant to setup the proper IVORs that are either unique or exist but have some variations between the processors Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-08 08:31:20 -06:00
_GLOBAL(__setup_cpu_e200)
/* enable dedicated debug exception handling resources (Debug APU) */
mfspr r3,SPRN_HID0
ori r3,r3,HID0_DAPUEN@l
mtspr SPRN_HID0,r3
b __setup_e200_ivors
_GLOBAL(__setup_cpu_e500v1)
_GLOBAL(__setup_cpu_e500v2)
powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs Some boot loaders may not enable L1 instruction/data cache. Check if data and instruction caches are enabled, and enable them if needed. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-06-10 15:37:28 -05:00
mflr r4
bl __e500_icache_setup
bl __e500_dcache_setup
bl __setup_e500_ivors
powerpc/fsl_rio: Fix non-standard HID1 register access Moved setting of RFXE bit so we get machine checks on RIO errors into cpu_setup so that the RIO code isn't core specific. Signed-off-by: Shaohui Xie <b21989@freescale.com> Cc: Li Yang <leoli@freescale.com> Cc: Roy Zang <tie-fei.zang@freescale.com> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-11-03 17:36:37 +08:00
#ifdef CONFIG_RAPIDIO
/* Ensure that RFXE is set */
mfspr r3,SPRN_HID1
oris r3,r3,HID1_RFXE@h
mtspr SPRN_HID1,r3
#endif
powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs Some boot loaders may not enable L1 instruction/data cache. Check if data and instruction caches are enabled, and enable them if needed. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-06-10 15:37:28 -05:00
mtlr r4
blr
powerpc/fsl-booke: Cleanup init/exception setup to be runtime We currently have a few variants of fsl-booke processors (e500v1, e500v2, e500mc, and e200). They all have minor differences that we had previously been handling via ifdefs. To move towards having this support the following changes have been made: * PID1, PID2 only exist on e500v1 & e500v2 and should not be accessed on e500mc or e200. We use MMUCFG[NPIDS] to determine which case we are since we only touch PID1/2 in extremely early init code. * Not all IVORs exist on all the processors so introduce cpu_setup functions for each variant to setup the proper IVORs that are either unique or exist but have some variations between the processors Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-01-08 08:31:20 -06:00
_GLOBAL(__setup_cpu_e500mc)
powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs Some boot loaders may not enable L1 instruction/data cache. Check if data and instruction caches are enabled, and enable them if needed. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-06-10 15:37:28 -05:00
mflr r4
bl __e500_icache_setup
bl __e500_dcache_setup
bl __setup_e500mc_ivors
mtlr r4
blr
powerpc/fsl-booke: Add support for FSL 64-bit e5500 core The new e5500 core is similar to the e500mc core but adds 64-bit support. We support running it in 32-bit mode as it is identical to the e500mc. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-08 08:32:11 -05:00
#endif
/* Right now, restore and setup are the same thing */
_GLOBAL(__restore_cpu_e5500)
_GLOBAL(__setup_cpu_e5500)
mflr r4
bl __e500_icache_setup
bl __e500_dcache_setup
#ifdef CONFIG_PPC_BOOK3E_64
bl .__setup_base_ivors
#else
bl __setup_e500mc_ivors
#endif
mtlr r4
blr
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