projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| f6dfc805 DG |
1 | /* |
| 2 | * Copyright 2007 David Gibson, IBM Corporation. | |
| 3 | * | |
| 4 | * Based on earlier code: | |
| 5 | * Matt Porter <mporter@kernel.crashing.org> | |
| 6 | * Copyright 2002-2005 MontaVista Software Inc. | |
| 7 | * | |
| 8 | * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> | |
| 9 | * Copyright (c) 2003, 2004 Zultys Technologies | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or | |
| 12 | * modify it under the terms of the GNU General Public License | |
| 13 | * as published by the Free Software Foundation; either version | |
| 14 | * 2 of the License, or (at your option) any later version. | |
| 15 | */ | |
| 16 | #include <stddef.h> | |
| 17 | #include "types.h" | |
| 18 | #include "string.h" | |
| 19 | #include "stdio.h" | |
| 20 | #include "ops.h" | |
| 21 | #include "reg.h" | |
| 22 | #include "dcr.h" | |
| 23 | ||
| 24 | /* Read the 44x memory controller to get size of system memory. */ | |
| 25 | void ibm44x_fixup_memsize(void) | |
| 26 | { | |
| 27 | int i; | |
| 28 | unsigned long memsize, bank_config; | |
| 29 | ||
| 30 | memsize = 0; | |
| 31 | for (i = 0; i < ARRAY_SIZE(sdram_bxcr); i++) { | |
| 32 | mtdcr(DCRN_SDRAM0_CFGADDR, sdram_bxcr[i]); | |
| 33 | bank_config = mfdcr(DCRN_SDRAM0_CFGDATA); | |
| 34 | ||
| 35 | if (bank_config & SDRAM_CONFIG_BANK_ENABLE) | |
| 36 | memsize += SDRAM_CONFIG_BANK_SIZE(bank_config); | |
| 37 | } | |
| 38 | ||
| 39 | dt_fixup_memory(0, memsize); | |
| 40 | } | |
| 11123346 DG |
41 | |
| 42 | #define SPRN_DBCR0 0x134 | |
| 43 | #define DBCR0_RST_SYSTEM 0x30000000 | |
| 44 | ||
| 45 | void ibm44x_dbcr_reset(void) | |
| 46 | { | |
| 47 | unsigned long tmp; | |
| 48 | ||
| 49 | asm volatile ( | |
| 50 | "mfspr %0,%1\n" | |
| 51 | "oris %0,%0,%2@h\n" | |
| 52 | "mtspr %1,%0" | |
| 53 | : "=&r"(tmp) : "i"(SPRN_DBCR0), "i"(DBCR0_RST_SYSTEM) | |
| 54 | ); | |
| 55 | ||
| 56 | } |