2 * This file contains low level CPU setup functions.
3 * Kumar Gala <galak@kernel.crashing.org>
4 * Copyright 2009 Freescale Semiconductor, Inc.
6 * Based on cpu_setup_6xx code by
7 * Benjamin Herrenschmidt <benh@kernel.crashing.org>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
16 #include <asm/processor.h>
17 #include <asm/cputable.h>
18 #include <asm/ppc_asm.h>
20 _GLOBAL(__e500_icache_setup)
22 andi. r3, r0, L1CSR1_ICE
23 bnelr /* Already enabled */
24 oris r0, r0, L1CSR1_CPE@h
25 ori r0, r0, (L1CSR1_ICFI | L1CSR1_ICLFR | L1CSR1_ICE)
26 mtspr SPRN_L1CSR1, r0 /* Enable I-Cache */
30 _GLOBAL(__e500_dcache_setup)
32 andi. r3, r0, L1CSR0_DCE
33 bnelr /* Already enabled */
37 mtspr SPRN_L1CSR0, r0 /* Disable */
40 li r0, (L1CSR0_DCFI | L1CSR0_CLFC)
41 mtspr SPRN_L1CSR0, r0 /* Invalidate */
43 1: mfspr r0, SPRN_L1CSR0
44 andi. r3, r0, L1CSR0_CLFC
45 bne+ 1b /* Wait for lock bits reset */
46 oris r0, r0, L1CSR0_CPE@h
47 ori r0, r0, L1CSR0_DCE
50 mtspr SPRN_L1CSR0, r0 /* Enable */
55 _GLOBAL(__setup_cpu_e200)
56 /* enable dedicated debug exception handling resources (Debug APU) */
58 ori r3,r3,HID0_DAPUEN@l
61 _GLOBAL(__setup_cpu_e500v1)
62 _GLOBAL(__setup_cpu_e500v2)
64 bl __e500_icache_setup
65 bl __e500_dcache_setup
68 /* Ensure that RFXE is set */
70 oris r3,r3,HID1_RFXE@h
75 _GLOBAL(__setup_cpu_e500mc)
77 bl __e500_icache_setup
78 bl __e500_dcache_setup
79 bl __setup_e500mc_ivors
83 /* Right now, restore and setup are the same thing */
84 _GLOBAL(__restore_cpu_e5500)
85 _GLOBAL(__setup_cpu_e5500)
87 bl __e500_icache_setup
88 bl __e500_dcache_setup
89 #ifdef CONFIG_PPC_BOOK3E_64
90 bl .__setup_base_ivors
92 bl __setup_e500mc_ivors