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11#include <linux/init.h>
12#include <linux/clk-provider.h>
13#include <linux/clocksource.h>
14#include <linux/string.h>
15#include <linux/seq_file.h>
16#include <linux/cpu.h>
17#include <linux/initrd.h>
18#include <linux/console.h>
19#include <linux/debugfs.h>
20#include <linux/of_fdt.h>
21
22#include <asm/setup.h>
23#include <asm/sections.h>
24#include <asm/page.h>
25#include <linux/io.h>
26#include <linux/bug.h>
27#include <linux/param.h>
28#include <linux/pci.h>
29#include <linux/cache.h>
30#include <linux/of.h>
31#include <linux/dma-mapping.h>
32#include <asm/cacheflush.h>
33#include <asm/entry.h>
34#include <asm/cpuinfo.h>
35
36#include <asm/pgtable.h>
37
38DEFINE_PER_CPU(unsigned int, KSP);
39DEFINE_PER_CPU(unsigned int, KM);
40DEFINE_PER_CPU(unsigned int, ENTRY_SP);
41DEFINE_PER_CPU(unsigned int, R11_SAVE);
42DEFINE_PER_CPU(unsigned int, CURRENT_SAVE);
43
44unsigned int boot_cpuid;
45
46
47
48
49
50char cmd_line[COMMAND_LINE_SIZE] __attribute__ ((section(".data")));
51
52void __init setup_arch(char **cmdline_p)
53{
54 *cmdline_p = boot_command_line;
55
56 setup_memory();
57 parse_early_param();
58
59 console_verbose();
60
61 unflatten_device_tree();
62
63 setup_cpuinfo();
64
65 microblaze_cache_init();
66
67 xilinx_pci_init();
68
69#if defined(CONFIG_DUMMY_CONSOLE)
70 conswitchp = &dummy_con;
71#endif
72}
73
74#ifdef CONFIG_MTD_UCLINUX
75
76
77inline unsigned get_romfs_len(unsigned *addr)
78{
79#ifdef CONFIG_ROMFS_FS
80 if (memcmp(&addr[0], "-rom1fs-", 8) == 0)
81 return be32_to_cpu(addr[2]);
82#endif
83
84#ifdef CONFIG_CRAMFS
85 if (addr[0] == le32_to_cpu(0x28cd3d45))
86 return le32_to_cpu(addr[1]);
87#endif
88 return 0;
89}
90#endif
91
92unsigned long kernel_tlb;
93
94void __init machine_early_init(const char *cmdline, unsigned int ram,
95 unsigned int fdt, unsigned int msr, unsigned int tlb0,
96 unsigned int tlb1)
97{
98 unsigned long *src, *dst;
99 unsigned int offset = 0;
100
101
102
103
104
105#ifdef CONFIG_MTD_UCLINUX
106 int romfs_size;
107 unsigned int romfs_base;
108 char *old_klimit = klimit;
109
110 romfs_base = (ram ? ram : (unsigned int)&__init_end);
111 romfs_size = PAGE_ALIGN(get_romfs_len((unsigned *)romfs_base));
112 if (!romfs_size) {
113 romfs_base = (unsigned int)&__bss_start;
114 romfs_size = PAGE_ALIGN(get_romfs_len((unsigned *)romfs_base));
115 }
116
117
118 if (romfs_size > 0) {
119 memmove(&__bss_stop, (int *)romfs_base, romfs_size);
120 klimit += romfs_size;
121 }
122#endif
123
124
125 memset(__bss_start, 0, __bss_stop-__bss_start);
126 memset(_ssbss, 0, _esbss-_ssbss);
127
128
129 early_init_devtree(_fdt_start);
130
131
132
133 kernel_tlb = tlb0 + tlb1;
134
135
136
137 pr_info("Ramdisk addr 0x%08x, ", ram);
138 if (fdt)
139 pr_info("FDT at 0x%08x\n", fdt);
140 else
141 pr_info("Compiled-in FDT at %p\n", _fdt_start);
142
143#ifdef CONFIG_MTD_UCLINUX
144 pr_info("Found romfs @ 0x%08x (0x%08x)\n",
145 romfs_base, romfs_size);
146 pr_info("#### klimit %p ####\n", old_klimit);
147 BUG_ON(romfs_size < 0);
148
149 pr_info("Moved 0x%08x bytes from 0x%08x to 0x%08x\n",
150 romfs_size, romfs_base, (unsigned)&__bss_stop);
151
152 pr_info("New klimit: 0x%08x\n", (unsigned)klimit);
153#endif
154
155#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
156 if (msr) {
157 pr_info("!!!Your kernel has setup MSR instruction but ");
158 pr_cont("CPU don't have it %x\n", msr);
159 }
160#else
161 if (!msr) {
162 pr_info("!!!Your kernel not setup MSR instruction but ");
163 pr_cont("CPU have it %x\n", msr);
164 }
165#endif
166
167
168
169
170#if !CONFIG_MANUAL_RESET_VECTOR
171 offset = 0x2;
172#endif
173 dst = (unsigned long *) (offset * sizeof(u32));
174 for (src = __ivt_start + offset; src < __ivt_end; src++, dst++)
175 *dst = *src;
176
177
178 per_cpu(KM, 0) = 0x1;
179 per_cpu(CURRENT_SAVE, 0) = (unsigned long)current;
180}
181
182void __init time_init(void)
183{
184 of_clk_init(NULL);
185 setup_cpuinfo_clk();
186 timer_probe();
187}
188
189#ifdef CONFIG_DEBUG_FS
190struct dentry *of_debugfs_root;
191
192static int microblaze_debugfs_init(void)
193{
194 of_debugfs_root = debugfs_create_dir("microblaze", NULL);
195
196 return of_debugfs_root == NULL;
197}
198arch_initcall(microblaze_debugfs_init);
199
200# ifdef CONFIG_MMU
201static int __init debugfs_tlb(void)
202{
203 struct dentry *d;
204
205 if (!of_debugfs_root)
206 return -ENODEV;
207
208 d = debugfs_create_u32("tlb_skip", S_IRUGO, of_debugfs_root, &tlb_skip);
209 if (!d)
210 return -ENOMEM;
211
212 return 0;
213}
214device_initcall(debugfs_tlb);
215# endif
216#endif
217