Commit | Line | Data |
---|---|---|
228d5505 TB |
1 | /* |
2 | * Copyright © 2011 Tony Breeds 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 | * Copyright 2010 Ben. Herrenschmidt, IBM Corporation. | |
15 | * Copyright © 2011 David Kleikamp IBM Corporation | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License | |
19 | * as published by the Free Software Foundation; either version | |
20 | * 2 of the License, or (at your option) any later version. | |
21 | */ | |
22 | #include <stdarg.h> | |
23 | #include <stddef.h> | |
24 | #include "types.h" | |
25 | #include "elf.h" | |
26 | #include "string.h" | |
27 | #include "stdio.h" | |
28 | #include "page.h" | |
29 | #include "ops.h" | |
30 | #include "reg.h" | |
31 | #include "io.h" | |
32 | #include "dcr.h" | |
33 | #include "4xx.h" | |
34 | #include "44x.h" | |
35 | #include "libfdt.h" | |
36 | ||
37 | BSS_STACK(4096); | |
38 | ||
39 | #define MAX_RANKS 0x4 | |
40 | #define DDR3_MR0CF 0x80010011U | |
41 | ||
42 | static unsigned long long ibm_currituck_memsize; | |
43 | static unsigned long long ibm_currituck_detect_memsize(void) | |
44 | { | |
45 | u32 reg; | |
46 | unsigned i; | |
47 | unsigned long long memsize = 0; | |
48 | ||
49 | for(i = 0; i < MAX_RANKS; i++){ | |
50 | reg = mfdcrx(DDR3_MR0CF + i); | |
51 | ||
52 | if (!(reg & 1)) | |
53 | continue; | |
54 | ||
55 | reg &= 0x0000f000; | |
56 | reg >>= 12; | |
57 | memsize += (0x800000ULL << reg); | |
58 | } | |
59 | ||
60 | return memsize; | |
61 | } | |
62 | ||
63 | static void ibm_currituck_fixups(void) | |
64 | { | |
65 | void *devp = finddevice("/"); | |
66 | u32 dma_ranges[7]; | |
67 | ||
68 | dt_fixup_memory(0x0ULL, ibm_currituck_memsize); | |
69 | ||
70 | while ((devp = find_node_by_devtype(devp, "pci"))) { | |
71 | if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) { | |
72 | printf("%s: Failed to get dma-ranges\r\n", __func__); | |
73 | continue; | |
74 | } | |
75 | ||
76 | dma_ranges[5] = ibm_currituck_memsize >> 32; | |
77 | dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL; | |
78 | ||
79 | setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)); | |
80 | } | |
81 | } | |
82 | ||
446957ba | 83 | #define SPRN_PIR 0x11E /* Processor Identification Register */ |
228d5505 TB |
84 | void platform_init(void) |
85 | { | |
86 | unsigned long end_of_ram, avail_ram; | |
87 | u32 pir_reg; | |
88 | int node, size; | |
89 | const u32 *timebase; | |
90 | ||
91 | ibm_currituck_memsize = ibm_currituck_detect_memsize(); | |
92 | if (ibm_currituck_memsize >> 32) | |
93 | end_of_ram = ~0UL; | |
94 | else | |
95 | end_of_ram = ibm_currituck_memsize; | |
96 | avail_ram = end_of_ram - (unsigned long)_end; | |
97 | ||
98 | simple_alloc_init(_end, avail_ram, 128, 64); | |
99 | platform_ops.fixups = ibm_currituck_fixups; | |
100 | platform_ops.exit = ibm44x_dbcr_reset; | |
101 | pir_reg = mfspr(SPRN_PIR); | |
102 | ||
103 | /* Make sure FDT blob is sane */ | |
104 | if (fdt_check_header(_dtb_start) != 0) | |
105 | fatal("Invalid device tree blob\n"); | |
106 | ||
107 | node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type", | |
108 | "cpu", sizeof("cpu")); | |
109 | if (!node) | |
110 | fatal("Cannot find cpu node\n"); | |
111 | timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size); | |
112 | if (timebase && (size == 4)) | |
113 | timebase_period_ns = 1000000000 / *timebase; | |
114 | ||
115 | fdt_set_boot_cpuid_phys(_dtb_start, pir_reg); | |
116 | fdt_init(_dtb_start); | |
117 | ||
118 | serial_console_init(); | |
119 | } |