projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b4e8c8dd TS |
1 | /* |
| 2 | * Copyright 2010 Ben. Herrenschmidt, IBM Corporation. | |
| 3 | * | |
| 4 | * Based on earlier code: | |
| 5 | * Copyright (C) Paul Mackerras 1997. | |
| 6 | * | |
| 7 | * Matt Porter <mporter@kernel.crashing.org> | |
| 8 | * Copyright 2002-2005 MontaVista Software Inc. | |
| 9 | * | |
| 10 | * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> | |
| 11 | * Copyright (c) 2003, 2004 Zultys Technologies | |
| 12 | * | |
| 13 | * Copyright 2007 David Gibson, IBM Corporation. | |
| 14 | * | |
| 15 | * This program is free software; you can redistribute it and/or | |
| 16 | * modify it under the terms of the GNU General Public License | |
| 17 | * as published by the Free Software Foundation; either version | |
| 18 | * 2 of the License, or (at your option) any later version. | |
| 19 | */ | |
| 20 | #include <stdarg.h> | |
| 21 | #include <stddef.h> | |
| 22 | #include "types.h" | |
| 23 | #include "elf.h" | |
| 24 | #include "string.h" | |
| 25 | #include "stdio.h" | |
| 26 | #include "page.h" | |
| 27 | #include "ops.h" | |
| 28 | #include "reg.h" | |
| 29 | #include "io.h" | |
| 30 | #include "dcr.h" | |
| 31 | #include "4xx.h" | |
| 32 | #include "44x.h" | |
| 33 | #include "libfdt.h" | |
| 34 | ||
| 35 | BSS_STACK(4096); | |
| 36 | ||
| e817513b DK |
37 | static u32 ibm4xx_memstart; |
| 38 | ||
| b4e8c8dd TS |
39 | static void iss_4xx_fixups(void) |
| 40 | { | |
| e817513b DK |
41 | void *memory; |
| 42 | u32 reg[3]; | |
| 43 | ||
| 44 | memory = finddevice("/memory"); | |
| 45 | if (!memory) | |
| 46 | fatal("Can't find memory node\n"); | |
| 47 | /* This assumes #address-cells = 2, #size-cells =1 and that */ | |
| 48 | getprop(memory, "reg", reg, sizeof(reg)); | |
| 49 | if (reg[2]) | |
| 50 | /* If the device tree specifies the memory range, use it */ | |
| 51 | ibm4xx_memstart = reg[1]; | |
| 52 | else | |
| 53 | /* othersize, read it from the SDRAM controller */ | |
| 54 | ibm4xx_sdram_fixup_memsize(); | |
| 55 | } | |
| 56 | ||
| 57 | static void *iss_4xx_vmlinux_alloc(unsigned long size) | |
| 58 | { | |
| 59 | return (void *)ibm4xx_memstart; | |
| b4e8c8dd TS |
60 | } |
| 61 | ||
| 62 | #define SPRN_PIR 0x11E /* Processor Indentification Register */ | |
| 63 | void platform_init(void) | |
| 64 | { | |
| 65 | unsigned long end_of_ram = 0x08000000; | |
| 66 | unsigned long avail_ram = end_of_ram - (unsigned long)_end; | |
| 67 | u32 pir_reg; | |
| 68 | ||
| 69 | simple_alloc_init(_end, avail_ram, 128, 64); | |
| 70 | platform_ops.fixups = iss_4xx_fixups; | |
| e817513b | 71 | platform_ops.vmlinux_alloc = iss_4xx_vmlinux_alloc; |
| b4e8c8dd TS |
72 | platform_ops.exit = ibm44x_dbcr_reset; |
| 73 | pir_reg = mfspr(SPRN_PIR); | |
| 74 | fdt_set_boot_cpuid_phys(_dtb_start, pir_reg); | |
| 75 | fdt_init(_dtb_start); | |
| 76 | serial_console_init(); | |
| 77 | } |