2 * SPDX-License-Identifier: GPL-2.0-or-later
4 * QEMU OpenRISC boot helpers.
6 * (c) 2022 Stafford Horne <shorne@gmail.com>
9 #include "qemu/osdep.h"
11 #include "exec/cpu-defs.h"
13 #include "hw/loader.h"
14 #include "hw/openrisc/boot.h"
15 #include "sysemu/device_tree.h"
16 #include "sysemu/qtest.h"
17 #include "sysemu/reset.h"
21 #define KERNEL_LOAD_ADDR 0x100
23 hwaddr
openrisc_load_kernel(ram_addr_t ram_size
,
24 const char *kernel_filename
,
25 uint32_t *bootstrap_pc
)
32 if (kernel_filename
&& !qtest_enabled()) {
33 kernel_size
= load_elf(kernel_filename
, NULL
, NULL
, NULL
,
34 &elf_entry
, NULL
, &high_addr
, NULL
, 1,
37 if (kernel_size
< 0) {
38 kernel_size
= load_uimage(kernel_filename
,
39 &entry
, NULL
, NULL
, NULL
, NULL
);
40 high_addr
= entry
+ kernel_size
;
42 if (kernel_size
< 0) {
43 kernel_size
= load_image_targphys(kernel_filename
,
45 ram_size
- KERNEL_LOAD_ADDR
);
46 high_addr
= KERNEL_LOAD_ADDR
+ kernel_size
;
50 entry
= KERNEL_LOAD_ADDR
;
53 if (kernel_size
< 0) {
54 error_report("couldn't load the kernel '%s'", kernel_filename
);
57 *bootstrap_pc
= entry
;
64 hwaddr
openrisc_load_initrd(void *fdt
, const char *filename
,
65 hwaddr load_start
, uint64_t mem_size
)
70 /* We put the initrd right after the kernel; page aligned. */
71 start
= TARGET_PAGE_ALIGN(load_start
);
73 size
= load_ramdisk(filename
, start
, mem_size
- start
);
75 size
= load_image_targphys(filename
, start
, mem_size
- start
);
77 error_report("could not load ramdisk '%s'", filename
);
83 qemu_fdt_setprop_cell(fdt
, "/chosen",
84 "linux,initrd-start", start
);
85 qemu_fdt_setprop_cell(fdt
, "/chosen",
86 "linux,initrd-end", start
+ size
);
92 uint32_t openrisc_load_fdt(void *fdt
, hwaddr load_start
,
97 int fdtsize
= fdt_totalsize(fdt
);
100 error_report("invalid device-tree");
104 /* We put fdt right after the kernel and/or initrd. */
105 fdt_addr
= TARGET_PAGE_ALIGN(load_start
);
108 /* Should only fail if we've built a corrupted tree */
110 /* copy in the device tree */
111 qemu_fdt_dumpdtb(fdt
, fdtsize
);
113 rom_add_blob_fixed_as("fdt", fdt
, fdtsize
, fdt_addr
,
114 &address_space_memory
);
115 qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds
,
116 rom_ptr_for_as(&address_space_memory
, fdt_addr
, fdtsize
));