| 1 | |
| 2 |
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| 3 | #include <linux/init.h>
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| 4 | #include <linux/of_fdt.h>
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| 5 | #include <linux/printk.h>
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| 6 | #include <linux/memblock.h>
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| 7 | #include <init.h>
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| 8 |
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| 9 | #include "um_arch.h"
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| 10 |
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| 11 | static char *dtb __initdata;
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| 12 |
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| 13 | void uml_dtb_init(void)
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| 14 | {
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| 15 | long long size;
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| 16 | void *area;
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| 17 |
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| 18 | area = uml_load_file(dtb, &size);
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| 19 | if (area) {
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| 20 | if (!early_init_dt_scan(area, __pa(area))) {
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| 21 | pr_err("invalid DTB %s\n", dtb);
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| 22 | memblock_free(area, size);
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| 23 | return;
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| 24 | }
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| 25 |
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| 26 | early_init_fdt_scan_reserved_mem();
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| 27 | }
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| 28 |
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| 29 | unflatten_device_tree();
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| 30 | }
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| 31 |
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| 32 | static int __init uml_dtb_setup(char *line, int *add)
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| 33 | {
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| 34 | *add = 0;
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| 35 | dtb = line;
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| 36 | return 0;
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| 37 | }
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| 38 |
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| 39 | __uml_setup("dtb=", uml_dtb_setup,
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| 40 | "dtb=<file>\n"
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| 41 | " Boot the kernel with the devicetree blob from the specified file.\n\n"
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| 42 | );
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