| /* |
| * 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> |
| |
| _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 |
| |
| #ifdef CONFIG_PPC32 |
| _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) |
| mflr r4 |
| bl __e500_icache_setup |
| bl __e500_dcache_setup |
| bl __setup_e500_ivors |
| mtlr r4 |
| blr |
| _GLOBAL(__setup_cpu_e500mc) |
| mflr r4 |
| bl __e500_icache_setup |
| bl __e500_dcache_setup |
| bl __setup_e500mc_ivors |
| mtlr r4 |
| blr |
| #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 |
